@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@300;400;500;600&display=swap";.chart-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:300;display:flex;align-items:center;justify-content:center;padding:24px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fade-in .2s ease}.chart-modal{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-lg);width:100%;max-width:680px;box-shadow:var(--shadow-lg);animation:slide-up .25s cubic-bezier(.22,1,.36,1);overflow:hidden;display:flex;flex-direction:column}.chart-header{display:flex;align-items:flex-start;gap:12px;padding:18px 22px 14px;border-bottom:1px solid var(--border);flex-wrap:wrap}.chart-title{font-size:1rem;font-weight:700;color:var(--text);letter-spacing:-.01em;flex-shrink:0}.chart-meta{display:flex;align-items:center;gap:8px;flex:1;flex-wrap:wrap}.chart-meta-item{font-family:var(--font-mono);font-size:.72rem;color:var(--text-muted)}.chart-meta-item strong{color:var(--text)}.chart-meta-sep{color:var(--text-faint);font-size:.7rem}.cheat-meta{color:var(--cheat)}.chart-close{width:28px;height:28px;border-radius:50%;border:none;background:var(--bg2);color:var(--text-muted);cursor:pointer;font-size:.85rem;display:flex;align-items:center;justify-content:center;transition:all .15s;flex-shrink:0;margin-left:auto}.chart-close:hover{background:var(--border-strong);color:var(--text)}.chart-canvas-wrap{position:relative;padding:16px 16px 8px;background:var(--surface)}.chart-canvas{display:block;width:100%;border-radius:var(--radius-sm)}.chart-progress{position:absolute;bottom:20px;right:28px;font-family:var(--font-mono);font-size:.65rem;color:var(--text-faint);background:var(--surface);padding:2px 8px;border-radius:10px;border:1px solid var(--border)}.chart-legend{display:flex;align-items:center;gap:20px;padding:10px 22px;border-top:1px solid var(--border)}.chart-legend-item{display:flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:.72rem;color:var(--text-muted)}.chart-legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.chart-legend-dot--normal{background:var(--normal)}.chart-legend-dot--cheat{background:var(--cheat)}.chart-footer{padding:14px 22px 18px;display:flex;justify-content:center;border-top:1px solid var(--border)}.chart-footer .game-btn{min-width:120px}.share-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:400;display:flex;align-items:center;justify-content:center;padding:24px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fade-in .15s ease}.share-modal{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-lg);width:100%;max-width:400px;box-shadow:var(--shadow-lg);overflow:hidden;animation:slide-up .2s cubic-bezier(.22,1,.36,1)}.share-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 12px;border-bottom:1px solid var(--border)}.share-title{font-size:.95rem;font-weight:700;color:var(--text);letter-spacing:-.01em}.share-close{width:28px;height:28px;border-radius:50%;border:none;background:var(--bg2);color:var(--text-muted);cursor:pointer;font-size:.85rem;display:flex;align-items:center;justify-content:center;transition:all .15s}.share-close:hover{background:var(--border-strong);color:var(--text)}.share-preview{padding:14px 20px;background:var(--bg2);border-bottom:1px solid var(--border)}.share-preview-text{font-size:.82rem;color:var(--text-muted);line-height:1.5;margin-bottom:4px}.share-preview-url{font-family:var(--font-mono);font-size:.7rem;color:var(--accent)}.share-platforms{display:grid;grid-template-columns:repeat(5,1fr);gap:0;padding:18px 16px}.share-platform-btn{display:flex;flex-direction:column;align-items:center;gap:7px;padding:10px 6px;background:none;border:none;border-radius:var(--radius);cursor:pointer;transition:background .15s,transform .15s}.share-platform-btn:hover{background:var(--bg2);transform:translateY(-2px)}.share-platform-icon{width:40px;height:40px;border-radius:12px;background:var(--platform-color, var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;transition:box-shadow .15s}.share-platform-btn:hover .share-platform-icon{box-shadow:0 4px 12px color-mix(in srgb,var(--platform-color, var(--accent)) 40%,transparent)}.share-platform-icon svg{width:20px;height:20px}.share-platform-label{font-size:.65rem;font-weight:500;color:var(--text-muted);text-align:center;white-space:nowrap}.share-divider{display:flex;align-items:center;gap:12px;padding:0 20px;margin-bottom:14px}.share-divider:before,.share-divider:after{content:"";flex:1;height:1px;background:var(--border)}.share-divider span{font-family:var(--font-mono);font-size:.65rem;color:var(--text-faint);white-space:nowrap;letter-spacing:.05em}.share-copy-row{display:flex;align-items:center;gap:8px;padding:0 20px 20px}.share-copy-url{flex:1;font-family:var(--font-mono);font-size:.72rem;color:var(--text-muted);background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.share-copy-btn{font-family:var(--font-sans);font-size:.8rem;font-weight:600;padding:8px 16px;border-radius:var(--radius-sm);border:1.5px solid var(--accent);background:transparent;color:var(--accent);cursor:pointer;transition:all .15s;white-space:nowrap;flex-shrink:0}.share-copy-btn:hover{background:var(--accent);color:#fff}.share-copy-btn--copied{background:var(--success);border-color:var(--success);color:#fff}@keyframes slide-up{0%{transform:translateY(16px);opacity:0}to{transform:translateY(0);opacity:1}}.game{display:flex;flex-direction:column;gap:20px;max-width:600px}.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 12px;display:flex;flex-direction:column;align-items:center;gap:4px;transition:box-shadow .4s}.stat-card--glow{box-shadow:0 0 0 2px var(--success),var(--shadow)}.stat-label{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.1em;color:var(--text-faint);text-transform:uppercase}.stat-val{font-family:var(--font-mono);font-size:1.4rem;font-weight:600;color:var(--text);line-height:1}.stat-val--cheat{color:var(--cheat)}.stat-val--best{color:var(--accent)}.recharge-banner{background:color-mix(in srgb,var(--success) 15%,transparent);border:1px solid color-mix(in srgb,var(--success) 40%,transparent);color:var(--success);border-radius:var(--radius-sm);padding:8px 16px;font-family:var(--font-mono);font-size:.75rem;text-align:center;animation:pop-in .3s cubic-bezier(.34,1.56,.64,1)}@keyframes pop-in{0%{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}.play-area{display:flex;flex-direction:column;gap:16px}.current-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;display:flex;flex-direction:column;align-items:center;gap:10px;min-width:min(100%,560px)}.current-num{font-family:var(--font-mono);font-size:clamp(3.5rem,10vw,5.4rem);font-weight:600;line-height:1;letter-spacing:-.04em;transition:color .2s;min-width:15ch;text-align:center;display:block}.current-num--even{color:var(--normal)}.current-num--odd{color:var(--text)}@keyframes fade-normal{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-cheat{0%{opacity:0;transform:scale(.92);filter:brightness(2)}60%{opacity:1;transform:scale(1.04);filter:brightness(1.3)}to{opacity:1;transform:scale(1);filter:brightness(1)}}.fade-in-normal{animation:fade-normal .3s ease forwards}.fade-in-cheat{animation:fade-cheat .35s cubic-bezier(.22,1,.36,1) forwards}@keyframes cheat-used{0%{transform:scale(1)}30%{transform:scale(1.4);color:var(--warn)}60%{transform:scale(.85)}to{transform:scale(1)}}.cheat-anim{animation:cheat-used .45s cubic-bezier(.34,1.56,.64,1)}.action-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.action-card{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius);padding:18px 16px;display:flex;flex-direction:column;align-items:center;gap:10px;transition:border-color .2s,background .2s,opacity .2s}.action-card--danger{border-color:var(--cheat);background:var(--cheat-soft)}.action-card--locked{opacity:.42}.action-op{font-family:var(--font-mono);font-size:1rem;font-weight:500;color:var(--text-muted)}.action-result{font-family:var(--font-mono);font-size:1.1rem;font-weight:600;color:var(--text);display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:center;min-height:28px}.action-result--danger{color:var(--cheat)}.locked-text{font-size:.75rem;color:var(--text-faint);font-weight:400}.repeat-pill{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.08em;background:var(--cheat);color:#fff;padding:2px 7px;border-radius:20px;animation:pulse 1s ease-in-out infinite alternate}@keyframes pulse{0%{opacity:.75;transform:scale(.97)}to{opacity:1;transform:scale(1.02)}}.game-btn{font-family:var(--font-sans);font-size:.82rem;font-weight:600;padding:9px 16px;border-radius:var(--radius-sm);border:1.5px solid transparent;cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;gap:8px;width:100%;justify-content:center}kbd{font-family:var(--font-mono);font-size:.62rem;background:#ffffff26;border:1px solid rgba(255,255,255,.2);border-radius:3px;padding:1px 5px;line-height:1.4}.game-btn--normal{background:var(--normal);color:#fff;border-color:var(--normal)}.game-btn--normal:hover{opacity:.85}.game-btn--cheat{background:var(--cheat);color:#fff;border-color:var(--cheat)}.game-btn--cheat:hover:not(:disabled){opacity:.85}.game-btn--cheat:disabled{background:var(--bg2);border-color:var(--border);color:var(--text-faint);cursor:not-allowed}.live-chart-toggle{font-family:var(--font-mono);font-size:.72rem;color:var(--text-faint);background:none;border:none;cursor:pointer;padding:4px 0;text-align:left;transition:color var(--transition);align-self:flex-start}.live-chart-toggle:hover,.live-chart-toggle--active{color:var(--accent)}.live-chart-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;animation:pop-in .2s ease}.game-btn--share{background:transparent;color:var(--text-muted);border-color:var(--border-strong)}.game-btn--share:hover{background:var(--bg2);color:var(--text);border-color:var(--accent)}.gameover-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:8px}.game-btn--chart{background:var(--surface2, var(--bg2));color:var(--text);border-color:var(--border-strong);padding:10px 20px}.game-btn--chart:hover{background:var(--bg2);border-color:var(--accent);color:var(--accent)}.game-btn--restart{background:var(--text);color:var(--bg);border-color:var(--text);padding:12px 28px;font-size:.9rem;width:auto;margin-top:8px}.game-btn--restart:hover{opacity:.85}.kbd-hint{font-family:var(--font-mono);font-size:.68rem;color:var(--text-faint);text-align:center}.kbd-hint kbd{background:var(--bg2);border-color:var(--border);color:var(--text-muted);font-size:.62rem}.gameover-award{background:linear-gradient(135deg,color-mix(in srgb,var(--warn) 20%,transparent),color-mix(in srgb,var(--accent) 15%,transparent));border:1px solid color-mix(in srgb,var(--warn) 50%,transparent);color:var(--warn);border-radius:var(--radius);padding:10px 20px;font-size:.88rem;font-weight:600;text-align:center;animation:pop-in .5s cubic-bezier(.34,1.56,.64,1)}.gameover-card{background:var(--surface);border:2px solid var(--border-strong);border-radius:var(--radius-lg);padding:36px 28px;display:flex;flex-direction:column;align-items:center;gap:10px;animation:pop-in .35s cubic-bezier(.34,1.56,.64,1)}.gameover-badge{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint);background:var(--bg2);border:1px solid var(--border);padding:4px 12px;border-radius:20px}.gameover-badge--new{color:var(--warn);background:color-mix(in srgb,var(--warn) 15%,transparent);border-color:color-mix(in srgb,var(--warn) 40%,transparent);font-size:.85rem;letter-spacing:.06em}.gameover-score{font-family:var(--font-mono);font-size:4.5rem;font-weight:700;line-height:1;color:var(--text);letter-spacing:-.04em}.gameover-sub{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--text-faint);margin-top:-6px;text-transform:uppercase}.gameover-repeat{font-family:var(--font-mono);font-size:.8rem;color:var(--cheat);background:var(--cheat-soft);border:1px solid color-mix(in srgb,var(--cheat) 30%,transparent);border-radius:var(--radius-sm);padding:7px 14px;text-align:center}.gameover-repeat--special{border-color:color-mix(in srgb,var(--warn) 50%,transparent);color:var(--warn);background:color-mix(in srgb,var(--warn) 12%,transparent)}.gameover-hs{font-family:var(--font-mono);font-size:.75rem;color:var(--text-muted)}.gameover-cheats{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%;margin-top:6px}.gameover-cheats-label{font-family:var(--font-mono);font-size:.7rem;color:var(--text-muted);letter-spacing:.04em}.cheat-tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}.cheat-tag{font-family:var(--font-mono);font-size:.75rem;background:var(--cheat-soft);color:var(--cheat);border:1px solid color-mix(in srgb,var(--cheat) 30%,transparent);padding:3px 10px;border-radius:4px}@media (max-width: 520px){.stats-row{grid-template-columns:repeat(2,1fr)}.action-row{grid-template-columns:1fr}}.dp-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:150;display:flex;align-items:flex-start;justify-content:flex-end;padding:66px 20px 0;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fade-in .15s ease}.dp-panel{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-lg);width:520px;max-height:460px;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);overflow:hidden;animation:slide-up .2s ease}.dp-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border);flex-shrink:0}.dp-head-title{font-size:.82rem;font-weight:600;color:var(--text-muted);letter-spacing:.02em}.dp-close{background:var(--bg2);border:none;width:26px;height:26px;border-radius:50%;cursor:pointer;font-size:.75rem;color:var(--text-muted);display:flex;align-items:center;justify-content:center;transition:all .15s}.dp-close:hover{background:var(--border);color:var(--text)}.dp-list{overflow-y:auto;flex:1;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.dp-row{width:100%;display:flex;flex-direction:column;gap:4px;padding:10px 18px;background:none;border:none;border-bottom:1px solid var(--border);text-align:left;cursor:pointer;transition:background .12s;font-family:var(--font-sans)}.dp-row:hover{background:var(--bg2)}.dp-row--active{background:var(--accent-soft);border-left:3px solid var(--accent);padding-left:15px}.dp-row-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.dp-date-text{font-size:.85rem;font-weight:600;color:var(--text);flex:1}.dp-row-top-right{display:flex;align-items:center;gap:6px;flex-shrink:0}.dp-hs{font-family:var(--font-mono);font-size:.65rem;font-weight:500;color:var(--text-muted);background:var(--bg2);border:1px solid var(--border-strong);border-radius:4px;padding:1px 7px;white-space:nowrap}.dp-hs strong{color:var(--text);font-weight:700}.dp-today-pill{font-family:var(--font-mono);font-size:.58rem;font-weight:600;letter-spacing:.07em;background:var(--accent);color:#fff;padding:2px 7px;border-radius:10px;flex-shrink:0}.dp-params{font-family:var(--font-mono);font-size:.65rem;color:var(--text-faint);display:flex;align-items:center;gap:5px;flex-wrap:wrap}.dp-params strong{color:var(--text-muted);font-weight:600}.dp-sep{color:var(--border-strong);font-size:.6rem}.modal{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-lg);max-width:500px;width:100%;box-shadow:var(--shadow-lg);animation:slide-up .2s ease;overflow:hidden;max-height:90vh;display:flex;flex-direction:column}.modal--wide{max-width:640px}.modal-header{padding:18px 22px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.modal-close{width:28px;height:28px;border-radius:50%;border:none;background:var(--bg2);color:var(--text-muted);cursor:pointer;font-size:.85rem;display:flex;align-items:center;justify-content:center;transition:all .15s}.modal-close:hover{background:var(--border-strong);color:var(--text)}.modal-body{padding:22px;overflow-y:auto;flex:1}.modal-tabs{display:flex;border-bottom:1px solid var(--border);padding:0 22px;flex-shrink:0}.modal-tab{font-family:var(--font-sans);font-size:.82rem;font-weight:500;color:var(--text-muted);background:none;border:none;border-bottom:2px solid transparent;padding:10px 14px;cursor:pointer;margin-bottom:-1px;transition:color var(--transition),border-color var(--transition)}.modal-tab:hover{color:var(--text)}.modal-tab--active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.stats-coming-soon{display:flex;flex-direction:column;align-items:center;gap:14px;padding:32px 16px;text-align:center}.stats-coming-soon-icon{font-size:2.2rem}.stats-coming-soon-text{font-size:.85rem;color:var(--text-muted);line-height:1.6;max-width:320px}.rules-list{display:flex;flex-direction:column;gap:16px}.rule-item{font-size:.88rem;color:var(--text-muted);line-height:1.6;padding-left:2px}.rule-item strong{color:var(--text)}.rule-item em{color:var(--cheat);font-style:normal}.rule-divider{border:none;border-top:1px solid var(--border);margin:4px 0}.rule-kbd-section{font-size:.88rem;color:var(--text);display:flex;flex-direction:column;gap:10px}.rule-kbds{display:flex;flex-direction:column;gap:6px;font-family:var(--font-mono);font-size:.78rem;color:var(--text-muted)}.rule-kbds kbd{font-family:var(--font-mono);font-size:.72rem;background:var(--bg2);border:1px solid var(--border-strong);border-radius:4px;padding:2px 7px;color:var(--text)}.stats-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px}.summary-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:14px;text-align:center}.summary-val{font-family:var(--font-mono);font-size:1.8rem;font-weight:700;color:var(--accent);line-height:1}.summary-label{font-size:.7rem;color:var(--text-faint);margin-top:4px;font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase}.stats-empty{font-family:var(--font-mono);font-size:.82rem;color:var(--text-faint);text-align:center;padding:24px}.stats-table-wrap{overflow-x:auto}.stats-table{width:100%;border-collapse:collapse;font-size:.82rem}.stats-table th{text-align:left;padding:8px 10px;font-family:var(--font-mono);font-size:.65rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint);border-bottom:1px solid var(--border)}.stats-table td{padding:9px 10px;color:var(--text-muted);border-bottom:1px solid var(--bg2)}.stats-table .mono{font-family:var(--font-mono)}.score-cell{color:var(--text);font-weight:600}.stats-row--today td{color:var(--text)}.today-dot{color:var(--accent)}@keyframes slide-up{0%{transform:translateY(14px);opacity:0}to{transform:translateY(0);opacity:1}}.splash{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);z-index:500;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;animation:fade-in .3s ease}.splash-top-bar{position:absolute;top:20px;right:24px}.splash-theme-btn{display:flex;align-items:center;gap:7px;font-family:var(--font-sans);font-size:.8rem;font-weight:500;color:var(--text-muted);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 11px;cursor:pointer;transition:all var(--transition)}.splash-theme-btn:hover{color:var(--text);border-color:var(--border-strong)}.splash-theme-dropdown{position:relative}.splash-theme-menu{right:0;left:auto}.splash-content{display:flex;flex-direction:column;align-items:center;gap:28px;max-width:480px;width:100%;text-align:center}.splash-logo{display:flex;flex-direction:column;align-items:center;gap:2px;line-height:1}.splash-logo-collatz{font-family:var(--font-sans);font-size:clamp(3rem,10vw,4.5rem);font-weight:800;letter-spacing:-.04em;color:var(--accent)}.splash-logo-survivor{font-family:var(--font-sans);font-size:clamp(1.4rem,4.5vw,2rem);font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--text-muted)}.splash-tagline{font-size:.95rem;color:var(--text-muted);line-height:1.5;margin-top:-8px}.splash-daily{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 28px;width:100%;display:flex;flex-direction:column;gap:14px}.splash-daily-label{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--text-faint)}.splash-daily-stats{display:flex;align-items:center;justify-content:center;gap:0}.splash-stat{display:flex;flex-direction:column;align-items:center;gap:4px;flex:1}.splash-stat-label{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint)}.splash-stat-val{font-family:var(--font-mono);font-size:1.1rem;font-weight:600;color:var(--text)}.splash-stat-divider{width:1px;height:36px;background:var(--border);flex-shrink:0;margin:0 12px}.splash-actions{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%}.splash-play-btn{font-family:var(--font-sans);font-size:1.05rem;font-weight:700;letter-spacing:.02em;padding:16px 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#ff8800;--cheat-soft: #2e1800;--normal: #ffbb44;--normal-soft: #1e1000;--success: #88ffaa;--warn: #ffdd66;--shadow: 0 2px 12px rgba(0,0,0,.5);--shadow-lg: 0 8px 40px rgba(200,100,0,.15);--glow: 0 0 60px rgba(255,136,0,.08)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:15px;line-height:1.5;transition:background .3s,color .3s;-webkit-font-smoothing:antialiased}.app{height:100vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--glow)}.nav{display:flex;align-items:center;gap:0;padding:0 24px;height:58px;border-bottom:1px solid 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