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.control-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.viewport-mobile .utility{text-align:center;border-radius:10px;min-height:44px;padding:10px 8px;font-size:.86rem;font-weight:800;line-height:1.1}.viewport-mobile .digit-pad{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:9px}.viewport-mobile .digit-pad button{border-radius:11px;min-height:46px;padding:11px 0;font-size:1.02rem;font-weight:800}.viewport-mobile .sudoku-plain-shell{touch-action:manipulation}.viewport-mobile .coach-levels{grid-template-columns:repeat(var(--coach-level-mobile-count,1),minmax(0,1fr))}.viewport-mobile .coach-tools{gap:5px}.viewport-mobile .site-footer-bottom{flex-direction:column}.viewport-mobile .brand-logo-icon{box-shadow:0 4px 10px #113d5b1f}.viewport-mobile .theme-switch-thumb{box-shadow:0 1px 3px #0a213429}.viewport-mobile .mini-guide-box{-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:0 8px 18px #0e243b14}body.theme-dark .viewport-mobile 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.rehber-close:hover{color:#f2fbff;background:#53bee74d}.hero-top{justify-content:space-between;align-items:start;gap:14px;display:flex}.top-tools{flex-direction:column;align-items:stretch;gap:6px;width:min(320px,100%);display:flex}.top-tools-row{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:6px;display:grid}.mobile-nav-trigger{display:none}.mode-trigger,.tournament-trigger{color:#fff;cursor:pointer;width:100%;min-height:28px;box-shadow:none;background:linear-gradient(135deg,#18a86f,#2cb4f1);border:0;border-radius:8px;padding:4px 8px;font-size:.93rem;font-weight:700;transition:transform .16s,filter 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.18s;display:inline-flex}.locale-suggestion-btn-label-compact{display:none}.locale-suggestion-btn:hover{transform:translateY(-1px)}.locale-suggestion-btn-primary{color:#fff;background:#1d7fad;border:1px solid #187daa47}.locale-suggestion-btn-primary:hover{background:#156a92}.locale-suggestion-btn-secondary{color:#1b4b67;background:#ffffffb8;border:1px solid #1d6f9833}.locale-suggestion-btn-secondary:hover{background:#f5fbfffa;border-color:#1d6f9852}.locale-suggestion-btn-close{color:#1b4b67;background:#ffffffb8;border:1px solid #1d6f982e;width:34px;min-width:34px;min-height:34px;padding:0;font-size:1.05rem;line-height:1;display:none}.locale-suggestion-btn-close:hover{background:#f5fbfffa;border-color:#1d6f984d}body.theme-dark .locale-suggestion-banner{background:linear-gradient(#0b2232f5,#103045f0);border-color:#6db0dc47;box-shadow:0 18px 42px #00000061}body.theme-dark .locale-suggestion-eyebrow{color:#8cd3ff}body.theme-dark .locale-suggestion-text{color:#daf2ff}body.theme-dark .locale-suggestion-btn-primary{background:#1f8fc4;border-color:#6fc2f238}body.theme-dark .locale-suggestion-btn-primary:hover{background:#39a2d5}body.theme-dark .locale-suggestion-btn-secondary{color:#daf2ff;background:#ffffff0a;border-color:#6db0dc3d}body.theme-dark .locale-suggestion-btn-secondary:hover{background:#ffffff14;border-color:#8fcaee66}body.theme-dark .locale-suggestion-btn-close{color:#daf2ff;background:#ffffff0a;border-color:#6db0dc3d}body.theme-dark .locale-suggestion-btn-close:hover{background:#ffffff14;border-color:#8fcaee66}.locale-suggestion-banner[data-layout=bar]{top:calc(env(safe-area-inset-top,0px) + 10px);border-radius:16px;width:auto;padding:10px 12px;bottom:auto;left:12px;right:12px}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-main{flex-direction:row;align-items:center;gap:10px}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-content{flex:1;gap:2px;min-width:0}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-eyebrow{letter-spacing:.02em;text-transform:none;white-space:nowrap;text-overflow:ellipsis;font-size:.78rem;overflow:hidden}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-text{display:none}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-actions{flex-wrap:nowrap;flex-shrink:0;align-items:center;gap:8px}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-btn{min-height:36px;padding:8px 12px;font-size:.82rem}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-btn-secondary{display:none}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-btn-close{display:inline-flex}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-btn-label-full{display:none}.locale-suggestion-banner[data-layout=bar] .locale-suggestion-btn-label-compact{display:inline}@media (max-width:820px){.locale-suggestion-banner{top:calc(env(safe-area-inset-top,0px) + 10px);border-radius:16px;width:auto;padding:10px 12px;bottom:auto;left:10px;right:10px}.locale-suggestion-main{flex-direction:row;align-items:center;gap:10px}.locale-suggestion-content{flex:1;gap:2px;min-width:0}.locale-suggestion-eyebrow{letter-spacing:.02em;text-transform:none;white-space:nowrap;text-overflow:ellipsis;font-size:.78rem;overflow:hidden}.locale-suggestion-text{display:none}.locale-suggestion-actions{flex-wrap:nowrap;flex-shrink:0;align-items:center;gap:8px}.locale-suggestion-btn{min-height:36px;padding:8px 12px;font-size:.82rem}.locale-suggestion-btn-secondary{display:none}.locale-suggestion-btn-close{display:inline-flex}.locale-suggestion-btn-label-full{display:none}.locale-suggestion-btn-label-compact{display:inline}}.celebration-fireworks-layer{pointer-events:none;z-index:500;position:fixed;inset:0;overflow:hidden}.celebration-canvas-layer{pointer-events:none;z-index:520;width:100vw;height:100vh;position:fixed;inset:0}.celebration-fireworks-ring{left:var(--fx-x);top:var(--fx-y);opacity:0;width:10px;height:10px;animation:.98s ease-out forwards firework-ring;animation-delay:var(--fx-delay);border:2px solid #8fd3ffe0;border-radius:999px;display:block;position:absolute;transform:translate(-50%,-50%)scale(.2)}.celebration-fireworks-spark{left:var(--fx-x);top:var(--fx-y);width:var(--fx-size);height:var(--fx-size);background:var(--fx-color);box-shadow:0 0 16px var(--fx-color);border-radius:999px;display:block;position:absolute}@supports (color:color-mix(in lab, red, red)){.celebration-fireworks-spark{box-shadow:0 0 16px color-mix(in srgb,var(--fx-color),white 35%)}}.celebration-fireworks-spark{opacity:0;animation:firework-spark var(--fx-duration)cubic-bezier(.12,.7,.15,1)forwards;animation-delay:var(--fx-delay);transform:translate(-50%,-50%)scale(.4)}@keyframes firework-ring{0%{opacity:.72;transform:translate(-50%,-50%)scale(.2)}to{opacity:0;transform:translate(-50%,-50%)scale(8.8)}}@keyframes firework-spark{0%{opacity:.96;transform:translate(-50%,-50%)scale(.42)}to{opacity:0;transform:translate(calc(-50% + var(--fx-tx)),calc(-50% + var(--fx-ty)))scale(0)}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}