/* styles-foundation.min.css */
:root{color-scheme:light;--ink:#321507;--muted:#7b5943;--paper:#fff8e8;--surface:#fffdf7;--surface-strong:#fff3d4;--line:#ead7aa;--line-strong:#a98b61;--accent:#c8442d;--accent-dark:#8f281b;--gold:#e8b93f;--green:#35775c;--shadow:rgba(85,48,21,0.14);--content-width:1040px;--play-width:var(--content-width);--board-card-padding:clamp(12px,1.6vw,18px);--board-size:min(56vw,738px)}*{box-sizing:border-box}html{min-height:100%;scroll-behavior:smooth}body{margin:0;min-height:100vh;overflow-x:hidden;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:linear-gradient(180deg,rgba(255,255,255,0.72),rgba(255,253,247,0.78)),url("./assets/zudoku_site_bg_washi_v1.webp") center center / cover fixed no-repeat,#fffdf8}button,a{font:inherit}button{cursor:pointer}a{color:var(--accent);font-weight:900}.hidden{display:none !important}p{color:var(--muted);line-height:1.55}.site-shell,.app-shell{width:min(100%,1420px);min-height:100vh;margin:0 auto;padding:16px clamp(12px,2.4vw,30px) 24px}.site-header,.top-bar{position:relative;z-index:200;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"brand account" "nav nav";align-items:center;gap:16px;margin-bottom:16px}.site-header-injected{width:min(100%,var(--content-width));grid-template-columns:auto minmax(0,1fr);grid-template-areas:"brand nav";gap:10px;margin:0 auto 16px}.site-header-injected .brand{gap:8px}.site-header-injected .brand-logo{width:52px;height:52px}.site-header-injected .brand-copy{width:136px}.site-header-injected .top-nav{min-height:48px;justify-content:flex-end}.site-header-injected .top-nav a,.site-header-injected .nav-trigger{padding:9px 9px;font-size:12.5px}.site-header>.brand,.top-bar>.brand{grid-area:brand}.site-header>.top-nav,.top-bar>.top-nav{grid-area:nav}.site-header>.account-panel,.top-bar>.account-panel{grid-area:account;justify-self:end}.site-chrome-frame{width:min(100%,var(--content-width));min-height:0;margin:0 auto;padding:16px clamp(12px,2.4vw,30px) 0}.site-chrome-footer-frame{padding-top:0;padding-bottom:24px}.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;color:inherit;text-decoration:none}.brand-logo{width:74px;height:74px;object-fit:contain;flex:0 0 auto}.brand-mark{width:62px;height:62px;display:grid;grid-template-columns:repeat(3,1fr);gap:2px;flex:0 0 auto;padding:7px;border:2px solid #f0cf7a;border-radius:8px;background:#fbf0d0;color:#9b6a36;font-size:12px;font-weight:900;line-height:1}.brand-mark span,.brand-mark strong{display:grid;place-items:center;min-width:0;border-radius:3px;background:#fff8e5}.brand-mark strong{color:#fff;background:var(--accent)}.brand-copy{display:grid;gap:2px;width:min(190px,calc(100vw - 112px));min-width:0}.brand-wordmark{display:block;width:100%;max-width:100%;height:auto;overflow:visible}.wordmark-zudoku{fill:var(--accent);font-size:21px;font-weight:950;letter-spacing:0}.wordmark-tagline{fill:var(--ink);font-size:8.02px;font-weight:950;letter-spacing:0}.eyebrow,.section-kicker,.account-label,.control-label{margin:0;font-size:11px;font-weight:950;letter-spacing:0.22em;text-transform:uppercase;color:var(--accent)}.brand-title{color:var(--ink);font-size:clamp(18px,2vw,29px);font-weight:950;line-height:1.02}.top-nav{display:flex;align-items:center;justify-content:flex-start;gap:4px;width:100%;min-width:0;padding:5px;border:1px solid rgba(234,215,170,0.92);border-radius:8px;background:rgba(255,253,247,0.72);box-shadow:0 10px 30px rgba(85,48,21,0.06)}.nav-menu{position:relative;display:inline-flex;min-width:0}.nav-menu::after{content:"";position:absolute;top:100%;left:-8px;right:-8px;height:12px}.top-nav a,.nav-trigger,.nav-option{position:relative;min-width:0;padding:10px 11px;border:0;border-radius:7px;color:var(--muted);background:transparent;font-size:13px;font-weight:950;text-align:center;text-decoration:none;white-space:nowrap}.nav-trigger{display:inline-flex;align-items:center;gap:7px}.nav-trigger::after{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-2px) rotate(45deg)}.top-nav a:hover,.top-nav a:focus-visible,.nav-trigger:hover,.nav-trigger:focus-visible{color:var(--accent);background:#fff6df;outline:none}.top-nav>a.active,.top-nav>a[aria-current="page"],.nav-trigger.active,.nav-dropdown a.active,.nav-dropdown a[aria-current="page"]{color:var(--accent-dark);background:#fff8e7}.top-nav>a.active::after,.top-nav>a[aria-current="page"]::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:3px;border-radius:999px;background:var(--accent)}.nav-dropdown{position:absolute;top:calc(100%+8px);left:0;z-index:220;display:grid;width:218px;gap:3px;padding:8px;border:1px solid rgba(169,139,97,0.36);border-radius:8px;background:rgba(255,253,247,0.99);box-shadow:0 20px 48px rgba(50,21,7,0.30);opacity:0;pointer-events:none;transform:translateY(-4px);transition:opacity 80ms ease,transform 80ms ease;visibility:hidden}.nav-menu:hover .nav-dropdown,.nav-menu:focus-within .nav-dropdown,.nav-menu.open .nav-dropdown{opacity:1;pointer-events:auto;transform:translateY(0);visibility:visible}.nav-dropdown a,.nav-option{display:flex;align-items:center;justify-content:space-between;width:100%;padding:9px 10px;color:var(--ink);text-align:left}.nav-dropdown a.active::after,.nav-dropdown a[aria-current="page"]::after{display:none}.nav-option.disabled{color:rgba(123,89,67,0.56);background:rgba(245,232,206,0.42);cursor:not-allowed}.nav-dropdown small,.nav-option small{color:rgba(143,40,27,0.52);font-size:10px;font-weight:950;letter-spacing:0.08em;text-transform:uppercase}

/* styles-chrome.min.css */
.account-panel{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;min-width:min(100%,260px);padding:8px 9px;border:1px solid var(--line);border-radius:8px;background:rgba(255,253,247,0.80);box-shadow:0 14px 34px rgba(85,48,21,0.08)}.account-panel.signed-in{display:flex;justify-content:flex-end;min-width:0;padding:0;border:0;background:transparent;box-shadow:none}.account-panel.signed-in .account-copy,.account-panel.signed-in #loginButton,.account-panel.signed-in .login-dropdown{display:none !important}.account-panel.signed-in .login-menu{position:static}.account-avatar-button{display:grid;place-items:center;width:46px;height:46px;padding:3px;border:1px solid rgba(234,215,170,0.96);border-radius:50%;background:rgba(255,253,247,0.94);box-shadow:0 12px 26px rgba(85,48,21,0.13)}.account-avatar-button:hover,.account-avatar-button:focus-visible,.account-avatar-button[aria-expanded="true"]{border-color:rgba(200,68,45,0.58);outline:none;transform:translateY(-1px)}.account-avatar{width:38px;height:38px;border:1px solid rgba(255,255,255,0.95);border-radius:50%;background:#fff8e5;object-fit:cover;box-shadow:0 6px 14px rgba(85,48,21,0.12)}.account-panel>div{min-width:0}.account-name{max-width:185px;margin:1px 0 0;overflow:hidden;color:var(--ink);font-size:15px;font-weight:900;text-overflow:ellipsis;white-space:nowrap}.login-menu{position:relative;display:inline-flex;justify-self:end}.login-dropdown{position:absolute;top:calc(100%+8px);right:0;z-index:40;width:min(340px,calc(100vw - 28px));padding:12px;border:1px solid rgba(169,139,97,0.45);border-radius:8px;background:rgba(255,253,247,0.98);box-shadow:0 18px 42px rgba(85,48,21,0.18)}.account-dropdown{position:absolute;top:calc(100%+8px);right:0;z-index:45;display:grid;width:min(250px,calc(100vw - 28px));gap:6px;padding:10px;border:1px solid rgba(169,139,97,0.45);border-radius:8px;background:rgba(255,253,247,0.99);box-shadow:0 18px 42px rgba(85,48,21,0.18)}.account-dropdown-profile{padding:9px 10px 10px;border:1px solid rgba(234,215,170,0.76);border-radius:8px;background:rgba(255,248,229,0.9)}.account-dropdown-profile strong,.account-dropdown-profile span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-dropdown-profile strong{color:var(--ink);font-size:15px;font-weight:950}.account-dropdown-profile span{margin-top:3px;color:var(--muted);font-size:12px;font-weight:800}.account-menu-item{width:100%;min-height:38px;padding:9px 10px;border:0;border-radius:7px;color:var(--ink);background:transparent;font-size:14px;font-weight:950;text-align:left}.account-menu-item:hover,.account-menu-item:focus-visible{color:var(--accent-dark);background:#fff6df;outline:none}.account-menu-item.danger{color:var(--accent-dark)}.site-account-menu{position:relative;display:inline-flex;align-items:center;min-width:0;margin-left:auto}.site-account-button{position:relative;display:inline-grid;grid-auto-flow:column;align-items:center;justify-content:center;gap:7px;min-height:38px;min-width:38px;padding:6px 10px;border:1px solid rgba(234,215,170,0.96);border-radius:999px;color:var(--accent-dark);background:linear-gradient(180deg,rgba(255,253,247,0.98),rgba(255,248,229,0.92));box-shadow:0 10px 24px rgba(85,48,21,0.10);font-size:13px;font-weight:950;line-height:1;white-space:nowrap}.site-account-button:hover,.site-account-button:focus-visible,.site-account-button[aria-expanded="true"]{border-color:rgba(200,68,45,0.54);background:#fff6df;outline:none;transform:translateY(-1px)}.site-account-button.is-signed-in{width:42px;height:42px;padding:3px;border-radius:50%}.site-account-avatar{width:34px;height:34px;border:1px solid rgba(255,255,255,0.95);border-radius:50%;background:#fff8e5;object-fit:cover;box-shadow:0 6px 14px rgba(85,48,21,0.12)}.site-account-dropdown{position:absolute;top:calc(100%+9px);right:0;z-index:260;width:min(320px,calc(100vw - 28px));padding:0;border:1px solid rgba(169,139,97,0.44);border-radius:8px;background:rgba(255,253,247,0.99);box-shadow:0 22px 58px rgba(50,21,7,0.24);backdrop-filter:blur(10px)}.site-account-dropdown[hidden]{display:none}.site-account-dropdown-panel{display:grid;gap:8px;padding:10px}.site-account-dropdown-profile{display:grid;grid-template-columns:42px minmax(0,1fr);align-items:center;gap:10px;background:radial-gradient(circle at 0% 0%,rgba(200,68,45,0.14),transparent 46%),linear-gradient(180deg,rgba(255,248,229,0.96),rgba(255,253,247,0.94))}.site-account-dropdown-avatar{width:42px;height:42px;border:1px solid rgba(255,255,255,0.95);border-radius:50%;object-fit:cover;background:#fff8e5;box-shadow:0 8px 18px rgba(85,48,21,0.12)}.site-account-menu-item{display:grid;grid-template-columns:30px minmax(0,1fr);align-items:center;gap:9px;min-height:42px;border:1px solid transparent}.site-account-menu-item:hover,.site-account-menu-item:focus-visible{border-color:rgba(234,215,170,0.86)}.site-menu-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;color:var(--accent-dark);background:rgba(255,229,185,0.82)}.site-menu-icon svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.site-menu-icon-profile{width:24px;height:24px;border-radius:50%;color:#fffdf7;background:var(--accent)}.site-menu-icon-settings{color:#35775c;background:rgba(53,119,92,0.14)}.site-menu-icon-danger{color:#8f281b;background:rgba(200,68,45,0.13)}.site-account-message{margin:0;padding:8px 10px;border:1px solid rgba(200,68,45,0.22);border-radius:8px;color:var(--accent-dark);background:rgba(255,246,223,0.92);font-size:12px;font-weight:850;line-height:1.35}.login-dropdown-brand{display:grid;grid-template-columns:48px minmax(0,1fr);align-items:center;gap:10px;margin-bottom:10px;padding:10px;border:1px solid rgba(234,215,170,0.76);border-radius:8px;background:radial-gradient(circle at 8% 0%,rgba(200,68,45,0.12),transparent 46%),linear-gradient(180deg,rgba(255,248,229,0.96) 0%,rgba(255,253,247,0.94) 100%)}.login-dropdown-brand img{width:46px;height:46px;object-fit:contain}.login-dropdown-brand strong,.login-dropdown-brand span{display:block}.login-dropdown-brand strong{margin-top:2px;color:var(--ink);font-size:16px;font-weight:950;line-height:1.05}.login-dropdown-brand span{margin-top:4px;color:var(--muted);font-size:12px;font-weight:750;line-height:1.25}.provider-button{width:100%;min-height:46px;display:grid;grid-template-columns:28px minmax(0,1fr);align-items:center;gap:10px;padding:10px 12px;border:1px solid rgba(169,139,97,0.30);border-radius:8px;color:#1f1f1f;background:#fff;font-size:14px;font-weight:900;text-align:left}.provider-button+.provider-button{margin-top:8px}.provider-button:hover,.provider-button:focus-visible{border-color:rgba(200,68,45,0.48);outline:none;transform:translateY(-1px)}.provider-icon{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;font-weight:950}.google-icon svg{width:22px;height:22px}.facebook-provider{color:#fff;border-color:#1877f2;background:#1877f2}.facebook-icon{color:#1877f2;background:#fff;font-family:Arial,Helvetica,sans-serif;font-size:23px;line-height:1}.challenge-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:#fffdf7;box-shadow:0 16px 44px rgba(85,48,21,0.08)}.challenge-banner p{margin:2px 0 0;color:var(--muted);font-weight:750}

/* styles-layout.min.css */
.play-hero,.game-layout{width:min(100%,var(--play-width));margin:0 auto;display:grid;grid-template-columns:minmax(0,738px) minmax(0,1fr);justify-content:center;align-items:start;gap:16px}.board-stage,.control-panel,.side-panel,.profile-panel,.download-section,.content-section,.site-footer,.hero,.card{border:1px solid var(--line);border-radius:8px;background:rgba(255,253,247,0.88);box-shadow:0 22px 70px var(--shadow)}.board-stage{position:relative;padding:var(--board-card-padding)}.puzzle-id-chip{position:absolute;top:12px;right:14px;z-index:5;display:inline-flex;align-items:center;gap:7px;min-height:32px;max-width:min(230px,calc(100% - 28px));padding:6px 9px;border:1px solid rgba(169,139,97,0.44);border-radius:8px;color:var(--accent-dark);background:rgba(255,253,247,0.92);font-size:11px;font-weight:950}.puzzle-id-chip span{color:var(--muted);letter-spacing:0.16em}.puzzle-id-chip strong{overflow:hidden;color:var(--ink);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.control-panel,.side-panel,.profile-panel{padding:16px}.control-panel{position:sticky;top:14px}.board-header{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:12px;margin-bottom:10px}.board-header.standard-only{grid-template-columns:1fr}.puzzle-mode-label{min-height:13px;line-height:1.1}.puzzle-mode-label:empty{display:block;visibility:hidden}.board-header h1,.board-header h2,.panel-heading h1,.section-heading h2,.download-section h2,.result-panel h2,.mode-page h1,.mode-page h2,.blog-page h1,.blog-page h2{margin:4px 0 0;color:var(--ink);font-size:clamp(25px,3vw,42px);line-height:1.02;letter-spacing:0}.mode-tabs{display:grid;grid-template-columns:repeat(2,minmax(96px,1fr));gap:8px}
.site-shell[data-default-mode]{display:flex;flex-direction:column}.site-shell[data-default-mode] .mode-seo-guide{order:30}.site-shell[data-default-mode] .site-footer{order:40}@media(max-width:1100px){.mode-seo-hero,.mode-seo-layout{grid-template-columns:1fr}}@media(max-width:760px){.mode-seo-figure{display:none}}@media(max-width:520px){.download-section .qr-card{display:none}}
/* styles-game-controls.min.css */
.difficulty-row{display:grid;grid-template-columns:repeat(6,minmax(70px,1fr));align-items:center;gap:7px;margin-bottom:12px}.segment,.difficulty,.number-pad button,.button{min-height:42px;border:1px solid var(--line);border-radius:8px;color:var(--accent-dark);background:#fff;font-weight:950;text-align:center;transition:transform 120ms ease,border-color 120ms ease,background 120ms ease,color 120ms ease}.segment,.difficulty{padding:10px 8px}.segment:hover,.difficulty:hover,.number-pad button:hover,.button:hover,.segment:focus-visible,.difficulty:focus-visible,.number-pad button:focus-visible,.button:focus-visible{border-color:rgba(200,68,45,0.56);outline:none;transform:translateY(-1px)}.segment.active,.difficulty.active{color:#fff;border-color:var(--accent);background:linear-gradient(180deg,#da573f 0%,#b93424 100%)}.button{display:inline-flex;align-items:center;justify-content:center;min-width:116px;padding:12px 18px;text-decoration:none}.button.primary{color:#fff;border-color:var(--accent);background:linear-gradient(180deg,#da573f 0%,#b93424 100%);box-shadow:0 10px 24px rgba(200,68,45,0.18)}.button.ghost{background:rgba(255,255,255,0.76)}.button.active,.button[aria-pressed="true"]{color:#fff;border-color:var(--accent);background:linear-gradient(180deg,#da573f 0%,#b93424 100%)}.button.full{width:100%;margin-top:12px}.board-wrap{position:relative;display:grid;place-items:center}@media (min-width:981px){.board-wrap{width:calc(100%+var(--board-card-padding)+var(--board-card-padding));margin-inline:calc(-1 * var(--board-card-padding))}}.solver-security-warning{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;margin:0 0 10px;padding:8px 10px;border:1px solid rgba(200,68,45,0.38);border-radius:8px;background:linear-gradient(135deg,rgba(200,68,45,0.14),rgba(232,185,63,0.12)),rgba(255,249,239,0.94);box-shadow:0 10px 24px rgba(85,48,21,0.08)}.solver-security-warning strong{display:inline-flex;align-items:center;min-height:24px;padding:4px 8px;border-radius:7px;color:#fff;background:linear-gradient(180deg,#da573f 0%,#b93424 100%);font-size:10px;font-weight:950;letter-spacing:0.12em;text-transform:uppercase;white-space:nowrap}.solver-security-warning span{min-width:0;color:#7a231a;font-size:12px;font-weight:850;line-height:1.25}.sudoku-board{position:relative;isolation:isolate;width:min(100%,var(--board-size));aspect-ratio:1;display:grid;grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,minmax(0,1fr));border:2px solid rgba(50,21,7,0.74);border-radius:8px;overflow:hidden;background:#fffaf0;box-shadow:inset 0 0 0 2px rgba(232,185,63,0.16)}.sudoku-board.is-pending-start{filter:saturate(0.82) contrast(0.96)}.sudoku-board.is-paused{filter:saturate(0.7) contrast(0.9)}.board-start-overlay,.board-pause-overlay{position:absolute;top:50%;left:50%;z-index:30;display:grid;place-items:center;width:min(100%,var(--board-size));aspect-ratio:1;border-radius:8px;background:rgba(50,21,7,0.28);backdrop-filter:blur(5px);transform:translate(-50%,-50%)}.board-pause-overlay{background:rgba(35,18,8,0.34)}.board-start-overlay[hidden],.board-pause-overlay[hidden]{display:none}.board-start-card,.board-pause-card{display:grid;justify-items:center;gap:8px;width:min(276px,calc(100% - 48px));padding:20px 18px 18px;border:1px solid rgba(234,215,170,0.88);border-radius:8px;color:var(--ink);text-align:center;background:radial-gradient(circle at 50% 0%,rgba(200,68,45,0.18),transparent 58%),linear-gradient(180deg,rgba(255,255,255,0.96),rgba(255,247,229,0.94)),rgba(255,253,247,0.96);box-shadow:0 22px 60px rgba(50,21,7,0.25),inset 0 1px 0 rgba(255,255,255,0.94)}.board-pause-card{width:min(252px,calc(100% - 48px))}.board-start-card img,.board-pause-card img{width:58px;height:58px;object-fit:contain}.board-start-card strong,.board-pause-card strong{color:var(--ink);font-size:24px;font-weight:950;line-height:1}.board-start-card span,.board-pause-card span{color:var(--muted);font-size:13px;font-weight:760;line-height:1.28}.board-start-card .start-solve-rate{width:100%;padding:9px 10px;border:1px solid rgba(200,68,45,0.34);border-radius:8px;color:#7f2118;background:linear-gradient(135deg,rgba(200,68,45,0.18),rgba(232,185,63,0.18)),rgba(255,249,239,0.96);font-size:13.5px;font-weight:950;letter-spacing:0;line-height:1.18;box-shadow:inset 0 1px 0 rgba(255,255,255,0.82)}.board-start-card.has-solver-warning .start-solve-rate{border-color:rgba(157,39,28,0.58);color:#6d160f;background:linear-gradient(135deg,rgba(200,68,45,0.26),rgba(255,232,183,0.22)),rgba(255,247,235,0.98)}.board-start-card .start-subcopy{width:100%;padding:7px 10px;border:1px solid rgba(50,21,7,0.10);border-radius:8px;color:rgba(50,21,7,0.68);background:rgba(255,252,245,0.72);font-size:11.5px;font-weight:850;line-height:1.18}.locked-play-hero{margin-top:4px}

/* styles-game-board.min.css */
.board-start-button{min-width:150px;margin-top:4px}.cell{position:relative;display:grid;place-items:center;min-width:0;min-height:0;overflow:hidden;border:1px solid rgba(50,21,7,0.22);color:#2b160d;background:#fffdf7;font-size:clamp(18px,3.96vw,38px);font-weight:900;line-height:1;cursor:pointer}.cell:nth-child(3n){border-right-color:rgba(50,21,7,0.48);border-right-width:2px}.cell:nth-child(9n){border-right-width:1px}.cell:nth-child(n+19):nth-child(-n+27),.cell:nth-child(n+46):nth-child(-n+54){border-bottom-color:rgba(50,21,7,0.48);border-bottom-width:2px}.sudoku-board.killer-board{border-color:rgba(0,0,0,0.76)}.sudoku-board.killer-board .cell{border-color:rgba(50,21,7,0.10)}.sudoku-board.killer-board .cell:nth-child(3n){border-right-color:rgba(0,0,0,0.78);border-right-width:2px}.sudoku-board.killer-board .cell:nth-child(9n){border-right-color:rgba(50,21,7,0.10);border-right-width:1px}.sudoku-board.killer-board .cell:nth-child(n+19):nth-child(-n+27),.sudoku-board.killer-board .cell:nth-child(n+46):nth-child(-n+54){border-bottom-color:rgba(0,0,0,0.78);border-bottom-width:2px}.cell.given{color:var(--ink)}.cell.peer{background:#fff2d7}.cell.box-peer{background:#fbe8c2}.cell.selected{color:#fff;background:var(--accent)}.cell.same-number:not(.selected){color:var(--accent-dark);background:#f9d9cc}.cell.filled:not(.selected):not(.wrong):not(.peer):not(.box-peer):not(.same-number){background:#fffdf7}.cell.wrong{color:#fff;background:#7c241b}.cell.conflict:not(.selected):not(.wrong){color:#7c241b;background:#ffe7df;box-shadow:inset 0 0 0 2px rgba(185,52,36,0.28)}.cell.has-notes{align-items:stretch;justify-items:stretch}.cell-notes{width:100%;height:100%;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);padding:clamp(5px,0.7vw,8px);color:rgba(72,42,23,0.78);font-size:clamp(7px,1.05vw,13px);font-weight:950;line-height:1}.cell-notes span{display:grid;place-items:center;min-width:0;min-height:0}.cell.selected .cell-notes,.cell.wrong .cell-notes{color:rgba(255,255,255,0.92)}.score-popup{position:absolute;top:8px;left:50%;z-index:9;min-width:max-content;padding:2px 6px;border:0.7px solid rgba(200,68,45,0.50);border-radius:8px;color:#2f7f5f;background:rgba(255,253,247,0.94);box-shadow:0 8px 18px rgba(85,48,21,0.12);font-size:clamp(10px,1.1vw,13px);font-weight:950;line-height:1;pointer-events:none;transform:translate(-50%,0) scale(0.92);animation:scorePopupLift 900ms ease-out forwards}.score-popup.negative{color:#b93424}@keyframes scorePopupLift{0%{opacity:0;transform:translate(-50%,8px) scale(0.86)}16%{opacity:1;transform:translate(-50%,0) scale(1)}76%{opacity:1;transform:translate(-50%,-6px) scale(1)}100%{opacity:0;transform:translate(-50%,-12px) scale(0.96)}}.cage-overlay{position:absolute;inset:0;z-index:4;width:100%;height:100%;overflow:visible;pointer-events:none}.cage-line,.cage-line-halo{fill:none;vector-effect:non-scaling-stroke;shape-rendering:geometricPrecision}.cage-line-halo{stroke:rgba(255,253,247,0.96);stroke-width:2.4;stroke-dasharray:3.2 2.2;stroke-linecap:round;stroke-linejoin:round}.cage-line{stroke:rgba(200,68,45,0.96);stroke-width:1.15;stroke-dasharray:3.2 2.2;stroke-linecap:round;stroke-linejoin:round}.cage-sum-label{fill:#8f281b;stroke:rgba(255,253,247,0.96);stroke-width:0.055px;paint-order:stroke fill;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:0.24px;font-weight:950;letter-spacing:0;pointer-events:none;user-select:none}.score-strip,.number-pad,.game-actions,.stat-grid,.result-stats,.seo-grid,.article-grid{display:grid;gap:8px}.score-strip{grid-template-columns:repeat(3,minmax(0,1fr))}.score-strip>div,.stat-tile,.status-box,.qr-card{border:1px solid var(--line);border-radius:8px;background:rgba(255,248,229,0.76)}.score-strip>div{display:grid;place-items:center;min-width:0;padding:10px 8px;text-align:center}.score-strip .section-kicker{width:100%;font-size:9px;letter-spacing:0.16em;text-align:center}.score-strip strong{display:block;margin-top:3px;overflow:hidden;color:var(--ink);font-size:clamp(16px,1.45vw,22px);line-height:1;text-overflow:ellipsis;white-space:nowrap}.control-title{margin:14px 0 8px;color:var(--muted)}.number-pad{grid-template-columns:repeat(3,1fr);align-items:center}.number-pad button{position:relative;display:grid;place-items:center;gap:2px;aspect-ratio:1;min-width:0;min-height:0;color:var(--accent-dark);background:radial-gradient(circle at 50% 18%,rgba(255,255,255,0.86) 0,rgba(255,255,255,0.0) 46%),linear-gradient(180deg,#fff 0%,#ffe8b7 100%);box-shadow:inset 0 -2px 0 rgba(169,139,97,0.14),0 8px 16px rgba(85,48,21,0.06)}.number-pad button:disabled{cursor:default;opacity:0.42;filter:grayscale(0.8);transform:none}.number-pad button.complete{border-color:rgba(121,82,52,0.18);background:linear-gradient(180deg,rgba(255,255,255,0.86),rgba(238,229,210,0.82));box-shadow:none}.num-main{color:var(--accent-dark);font-size:31px;font-weight:950;line-height:0.95}.num-left{position:absolute;left:50%;bottom:5px;transform:translateX(-50%);min-height:12px;color:#b93424;font-size:11px;font-weight:950;line-height:1;letter-spacing:0}.status-box:empty{display:none}.game-actions{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:10px}.game-actions .button{min-width:0;padding-inline:6px}.game-actions #copyIdButton{grid-column:1 / -1;min-height:36px}.setting-hidden{display:none !important}.game-settings{display:grid;gap:8px;margin-top:10px}.game-settings-toggle{min-height:38px}.game-settings-panel{display:grid;gap:7px;padding:10px;border:1px solid rgba(200,68,45,0.18);border-radius:8px;background:radial-gradient(circle at 100% 0%,rgba(246,194,108,0.16),transparent 36%),rgba(255,253,247,0.90);box-shadow:0 12px 24px rgba(85,48,21,0.08)}.game-settings-panel[hidden]{display:none}.setting-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;min-height:34px;padding:6px 8px;border:1px solid rgba(169,139,97,0.20);border-radius:8px;color:var(--ink);background:rgba(255,248,229,0.58);font-size:12px;font-weight:850;line-height:1.15}.setting-row input{width:36px;height:20px;margin:0;accent-color:var(--accent)}.fullscreen-toggle{margin-top:4px}

/* styles-game-fullscreen.min.css */
body.board-fullscreen-active{overflow:hidden}.play-hero.is-board-fullscreen,.game-layout.is-board-fullscreen{--board-size:min(78vh,calc(100vw - 440px),820px);position:fixed;inset:0;z-index:96;width:100%;max-width:none;margin:0;padding:clamp(16px,3vw,38px);display:grid;grid-template-columns:minmax(0,var(--board-size)) minmax(280px,340px);align-items:center;justify-content:center;gap:clamp(14px,3vw,30px);background:radial-gradient(circle at 20% 0%,rgba(232,185,63,0.18),transparent 34%),linear-gradient(180deg,rgba(255,248,232,0.94),rgba(255,241,211,0.96)),url("./assets/zudoku_site_bg_washi_v1.webp") center center / cover no-repeat,#fff1d3}.is-board-fullscreen .board-stage{padding:0;overflow:visible;border:0;background:transparent;box-shadow:none}.is-board-fullscreen .board-stage>:not(.board-wrap){display:none !important}.is-board-fullscreen .board-wrap{width:var(--board-size);margin-inline:0}.is-board-fullscreen .sudoku-board{width:var(--board-size);box-shadow:0 30px 90px rgba(50,21,7,0.22),inset 0 0 0 2px rgba(232,185,63,0.16)}.is-board-fullscreen .control-panel{position:static;display:grid;align-content:center;gap:8px;width:min(30vw,340px);padding:0;border:0;background:transparent;box-shadow:none}.is-board-fullscreen .game-settings,.is-board-fullscreen #newGameButton,.is-board-fullscreen .sync-note,.is-board-fullscreen .stat-grid{display:none !important}.is-board-fullscreen .score-strip{gap:6px}.is-board-fullscreen .score-strip>div{min-height:58px;padding:8px 5px;background:rgba(255,248,229,0.82);box-shadow:0 10px 24px rgba(85,48,21,0.08)}.is-board-fullscreen .score-strip strong{font-size:clamp(16px,1.5vw,20px)}.is-board-fullscreen .control-title{margin:2px 0 0}.is-board-fullscreen .number-pad{width:100%;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(7px,1vw,11px)}.is-board-fullscreen .number-pad button{min-height:clamp(54px,8vmin,76px);border-color:rgba(169,139,97,0.42);background:radial-gradient(circle at 50% 0%,rgba(255,255,255,0.82),transparent 42%),linear-gradient(180deg,#fffdf7 0%,#f8e9bb 100%);font-size:clamp(26px,5vmin,42px)}.is-board-fullscreen .number-pad .num-left{right:8px;bottom:6px;font-size:clamp(9px,1.3vmin,12px)}.is-board-fullscreen .game-actions{margin-top:0;gap:7px}.is-board-fullscreen .icon-button{min-height:clamp(42px,5.5vmin,52px)}.is-board-fullscreen .icon-button img{width:min(26px,100%);height:min(26px,100%)}.board-fullscreen-exit{position:absolute;top:clamp(12px,2vw,22px);right:clamp(12px,2vw,22px);z-index:2;display:grid;place-items:center;width:42px;height:42px;border:1px solid rgba(169,139,97,0.48);border-radius:999px;color:var(--accent-dark);background:rgba(255,253,247,0.92);box-shadow:0 12px 30px rgba(50,21,7,0.16);font-size:18px;font-weight:950}.board-fullscreen-exit:hover,.board-fullscreen-exit:focus-visible{border-color:rgba(200,68,45,0.7);outline:none;color:#fff;background:linear-gradient(180deg,#da573f 0%,#b93424 100%)}.icon-button{min-width:0;min-height:46px;padding:6px;overflow:hidden;border-color:rgba(121,82,52,0.22);color:var(--accent-dark);background:linear-gradient(180deg,rgba(255,255,255,0.94),rgba(255,244,215,0.76)),rgba(255,253,247,0.78);box-shadow:inset 0 1px 0 rgba(255,255,255,0.94),inset 0 -1px 0 rgba(121,82,52,0.10),0 7px 16px rgba(85,48,21,0.07)}.icon-button img{width:min(30px,100%);height:min(30px,100%);object-fit:contain;pointer-events:none;user-select:none}.tool-count{position:absolute;right:8px;bottom:5px;min-width:14px;min-height:14px;display:grid;place-items:center;border-radius:999px;color:#b93424;background:rgba(255,248,232,0.92);font-size:10px;font-weight:950;line-height:1;box-shadow:0 0 0 1px rgba(185,52,36,0.20);pointer-events:none}.icon-button:hover,.icon-button:focus-visible{border-color:rgba(200,68,45,0.42);background:linear-gradient(180deg,rgba(255,255,255,0.98),rgba(255,238,197,0.86)),rgba(255,253,247,0.92)}.icon-button.active{border-color:rgba(200,68,45,0.62);background:radial-gradient(circle at 50% 0%,rgba(232,185,63,0.28),transparent 58%),linear-gradient(180deg,rgba(255,248,229,0.96),rgba(255,229,185,0.88))}.icon-button:disabled{opacity:0.44;filter:grayscale(0.55);box-shadow:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.loading-screen{position:absolute;top:50%;left:50%;z-index:45;display:grid;place-items:center;width:min(100%,var(--board-size));aspect-ratio:1;border-radius:8px;background:rgba(50,21,7,0.30);backdrop-filter:blur(5px);transform:translate(-50%,-50%)}.loading-screen[hidden]{display:none}.loading-card{display:grid;justify-items:center;gap:8px;width:min(230px,calc(100% - 46px));padding:18px 18px;border:1px solid rgba(234,215,170,0.86);border-radius:8px;color:var(--ink);text-align:center;background:radial-gradient(circle at 50% 0%,rgba(232,185,63,0.24),transparent 58%),rgba(255,253,247,0.96);box-shadow:0 22px 70px rgba(85,48,21,0.18)}.loading-card img{width:58px;height:58px;object-fit:contain;animation:loadingPulse 900ms ease-in-out infinite alternate}@keyframes loadingPulse{from{transform:scale(0.96);opacity:0.78}to{transform:scale(1.04);opacity:1}}.sync-note{margin:10px 0 0;color:var(--muted);font-size:13px;font-weight:750;line-height:1.35}.stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:12px}.stat-tile{min-height:68px;padding:10px 8px}.stat-tile span{display:block;color:var(--muted);font-size:11px;font-weight:850;line-height:1.1}.stat-tile strong{display:block;margin-top:6px;overflow:hidden;color:var(--ink);font-size:18px;line-height:1;text-overflow:ellipsis;white-space:nowrap}.status-box{margin-top:12px;padding:13px;color:var(--muted);font-size:14px;font-weight:750;line-height:1.45}

/* styles-result.min.css */
.result-sheet{position:fixed;inset:0;z-index:140;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 50% 24%,rgba(232,185,63,0.22),transparent 34%),rgba(50,21,7,0.50);backdrop-filter:blur(7px)}.result-panel{position:relative;width:min(100%,462px);overflow:hidden;padding:28px 24px 24px;border:1px solid rgba(232,185,63,0.68);border-radius:8px;background:radial-gradient(circle at 50% 0%,rgba(232,185,63,0.22),transparent 46%),radial-gradient(circle at 100% 100%,rgba(200,68,45,0.12),transparent 38%),linear-gradient(180deg,rgba(255,253,247,0.98),rgba(255,246,224,0.97));box-shadow:0 30px 95px rgba(30,12,3,0.34),inset 0 1px 0 rgba(255,255,255,0.92);animation:resultCardEnter 220ms ease-out both}.result-panel::before{content:"";position:absolute;top:0;left:18px;right:18px;height:5px;border-radius:0 0 999px 999px;background:linear-gradient(90deg,transparent,rgba(200,68,45,0.92),rgba(232,185,63,0.95),transparent)}.result-sheet.is-defeat .result-panel{border-color:rgba(200,68,45,0.52);background:radial-gradient(circle at 50% 0%,rgba(200,68,45,0.18),transparent 46%),linear-gradient(180deg,rgba(255,253,247,0.98),rgba(255,239,230,0.97))}.result-sheet.is-practice .result-panel{border-color:rgba(143,40,27,0.50);background:radial-gradient(circle at 50% 0%,rgba(200,68,45,0.20),transparent 46%),radial-gradient(circle at 100% 100%,rgba(232,185,63,0.14),transparent 40%),linear-gradient(180deg,rgba(255,253,247,0.98),rgba(255,241,229,0.97))}@keyframes resultCardEnter{from{opacity:0;transform:translateY(10px) scale(0.98)}to{opacity:1;transform:translateY(0) scale(1)}}.result-stats{grid-template-columns:repeat(3,minmax(0,1fr));margin:16px 0 0}.result-stats span{min-width:0;padding:12px 8px;border:1px solid rgba(234,215,170,0.88);border-radius:8px;color:var(--ink);background:linear-gradient(180deg,rgba(255,248,232,0.98),rgba(255,239,202,0.82));font-size:13px;font-weight:950;text-align:center;box-shadow:inset 0 1px 0 rgba(255,255,255,0.82)}.result-panel p{margin:10px 0 0;color:var(--muted);font-weight:750;line-height:1.45}.toast{position:fixed;right:18px;bottom:18px;z-index:20;width:min(calc(100% - 36px),420px);padding:14px 16px;border:1px solid rgba(200,68,45,0.30);border-radius:8px;color:var(--accent-dark);background:#fffdf7;box-shadow:0 18px 56px rgba(85,48,21,0.18);font-weight:850}[hidden]{display:none !important}

/* styles-site-sections.min.css */
.download-section,.content-section,.site-footer{width:min(100%,var(--content-width));margin:18px auto 0;padding:clamp(18px,3vw,28px)}.awards-section{overflow:visible}.awards-heading{display:flex;align-items:start;justify-content:space-between;gap:18px}.awards-heading h1,.awards-heading h2{margin:4px 0 0;color:var(--ink);font-size:clamp(28px,4vw,48px);line-height:1.02}.awards-heading p{max-width:720px;margin:8px 0 0;font-size:16px}.awards-count{min-width:118px;padding:12px 14px;border:1px solid rgba(232,185,63,0.55);border-radius:8px;color:var(--accent-dark);background:linear-gradient(180deg,#fff7dd 0%,#ffe7a7 100%);font-size:20px;font-weight:950;text-align:center;box-shadow:0 10px 22px rgba(85,48,21,0.08)}.awards-auth-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;align-items:center;margin-top:18px;padding:clamp(16px,3vw,24px);border:1px dashed rgba(169,139,97,0.58);border-radius:8px;background:rgba(255,248,232,0.76)}.vault-lock{width:86px;height:86px;display:grid;place-items:center;border:2px solid rgba(232,185,63,0.72);border-radius:50%;color:#fff;background:radial-gradient(circle at 35% 30%,#ffdd76 0%,#c8442d 48%,#7e2419 100%);font-size:46px;font-weight:950;box-shadow:0 18px 40px rgba(85,48,21,0.16)}.awards-auth-card h3{margin:0 0 6px;color:var(--ink);font-size:24px;line-height:1.1}.awards-auth-card p{max-width:720px;margin:0 0 14px}.awards-vault{margin-top:18px}.award-filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.award-filter{min-height:38px;padding:8px 12px;border:1px solid rgba(169,139,97,0.34);border-radius:8px;color:var(--muted);background:rgba(255,255,255,0.80);font-size:13px;font-weight:950}.award-filter:hover,.award-filter:focus-visible,.award-filter.active{border-color:rgba(200,68,45,0.52);color:var(--accent-dark);background:#fff4dc;outline:none}.awards-grid{position:relative;display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:12px}.award-tile{position:relative;min-width:0;display:grid;gap:7px;justify-items:center;align-content:start;padding:10px 7px 9px;border:1px solid rgba(169,139,97,0.30);border-radius:8px;background:rgba(255,253,247,0.88);box-shadow:0 10px 22px rgba(85,48,21,0.08)}.award-tile:hover,.award-tile:focus-visible{z-index:8;border-color:rgba(200,68,45,0.58);outline:none;transform:translateY(-2px)}.award-tile::after{content:attr(data-tooltip);position:absolute;left:50%;bottom:calc(100%+10px);width:min(260px,72vw);padding:10px 12px;border:1px solid rgba(169,139,97,0.38);border-radius:8px;color:var(--ink);background:rgba(255,253,247,0.98);box-shadow:0 18px 34px rgba(85,48,21,0.18);font-size:12px;font-weight:850;line-height:1.35;opacity:0;pointer-events:none;text-align:left;transform:translate(-50%,6px);transition:opacity 0.16s ease,transform 0.16s ease}.award-tile:hover::after,.award-tile:focus-visible::after{opacity:1;transform:translate(-50%,0)}.award-art{width:72px;height:72px;object-fit:contain;filter:saturate(1.05) contrast(1.02)}.award-tile.locked .award-art{filter:grayscale(1) saturate(0.15) contrast(0.82);opacity:0.46}.award-tile.locked{background:rgba(255,253,247,0.62)}.award-meta{width:100%;min-width:0;display:grid;gap:2px;text-align:center}.award-meta strong,.award-meta span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.award-meta strong{color:var(--ink);font-size:11px;font-weight:950}.award-meta span{color:var(--muted);font-size:10px;font-weight:900;text-transform:uppercase}.award-tile.rarity-rare,.award-tile.rarity-epic,.award-tile.rarity-legendary,.award-tile.rarity-mythic{border-color:rgba(232,185,63,0.42)}.award-tile.rarity-mythic.earned{box-shadow:0 12px 28px rgba(200,68,45,0.16)}.awards-empty{grid-column:1 / -1;margin:0;padding:18px;border:1px dashed rgba(169,139,97,0.38);border-radius:8px;background:rgba(255,248,232,0.64);font-weight:850;text-align:center}.download-section{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px}.download-section p{max-width:680px;margin:10px 0 18px;font-size:17px}.qr-card{margin:0;padding:12px;text-align:center}.qr-card img{display:block;width:164px;height:164px;border-radius:7px;background:#fff}img.qr-card{display:block;width:164px;height:164px;margin:10px auto 12px;padding:12px;object-fit:contain}.qr-card figcaption{margin-top:8px;color:var(--muted);font-size:12px;font-weight:900;text-transform:uppercase}.section-heading{max-width:760px;margin-bottom:14px}.seo-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.article-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.seo-card,.article-card{min-width:0;min-height:150px;padding:16px;border:1px solid var(--line);border-radius:8px;color:inherit;background:#fff8e5;text-decoration:none}.seo-card span,.article-card span{display:block;color:var(--ink);font-size:18px;font-weight:950;line-height:1.1}.seo-card p,.article-card p{margin:10px 0 0;font-size:14px;font-weight:750}.site-footer{display:grid;grid-template-columns:minmax(260px,1fr) auto auto;gap:24px;align-items:start}.footer-logo{display:block;width:86px;height:auto;margin-bottom:8px}.site-footer p{max-width:360px;margin:0;font-size:14px;font-weight:750}.site-footer nav{display:grid;gap:8px}.site-footer a,.legal-links a{color:var(--muted);font-size:14px;font-weight:850;text-decoration:none}.site-footer a:hover,.site-footer a:focus-visible,.legal-links a:hover,.legal-links a:focus-visible{color:var(--accent);text-decoration:underline}

/* styles-static.min.css */
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