:root{font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;color:#25364c;background:#f4f7fc;font-synthesis:none;--blue:#285bd7;--line:#c7d2e4;--soft:#edf2fc;--surface:#fff;--muted:#748198;--ink:#25364c}*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit;border:0;background:none;touch-action:manipulation}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible{outline:3px solid #eaa526;outline-offset:3px}button:hover:not(:disabled){filter:brightness(.95)}a{color:inherit;text-decoration:none}.app{max-width:1000px;margin:auto;padding:0 48px}header{height:104px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e0e6f0}.brand{font-size:20px;font-weight:750;display:flex;align-items:center;gap:11px}.brand-icon{background:var(--blue);color:#fff;display:grid;place-items:center;width:32px;height:32px;border-radius:9px;font-family:Georgia,serif;font-size:25px}.brand-dot{height:5px;width:5px;border-radius:50%;background:var(--blue);margin-left:-6px}.icon-button{width:42px;height:42px;border-radius:12px;font-size:23px;display:grid;place-items:center}.intro{display:flex;justify-content:space-between;align-items:center;padding:43px 0 30px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--blue);font-weight:750}h1{font-size:29px;letter-spacing:-1px;font-weight:650;margin:12px 0 0}.intro-mark{font-family:Georgia,serif;color:#cad5e9;font-size:44px;font-style:italic}.workspace{display:grid;grid-template-columns:250px minmax(0,1fr);gap:62px;align-items:start}.sidebar{padding-top:5px}.daily-card{display:flex;flex-direction:column;text-align:left;width:100%;padding:23px;background:#e6edff;border:1px solid #dce5fc;border-radius:19px;color:#1e469e;gap:16px}.daily-top{display:flex;justify-content:space-between;width:100%;font-size:14px;font-weight:700}.daily-card strong{font-size:23px;font-weight:650;letter-spacing:-.7px;margin-top:7px}.daily-card>span:nth-of-type(2){font-size:13px;color:#5671a9}.daily-bottom{display:flex;justify-content:space-between;padding-top:23px;font-size:13px;width:100%;font-weight:600}.primary{background:var(--blue);color:white;min-height:48px;border-radius:12px;padding:13px 20px;font-weight:650}.new-game{display:flex;justify-content:space-between;width:100%;margin:16px 0}.side-note{padding:30px 5px 24px}.tiny-grid{font-size:32px;color:#a1b2cf}.side-note p{font-size:14px;line-height:1.9;color:var(--muted)}.text-button{padding:0;font-size:13px;color:var(--blue)}.stats-link{border-top:1px solid #dee5ef;width:100%;padding:21px 5px;display:flex;justify-content:space-between;font-size:14px}.game{min-width:0}.game-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:13px;min-height:39px}.mode-label{font-size:14px;font-weight:600}.difficulty-label{font-size:12px;color:var(--blue);background:#e5ecfc;border-radius:6px;padding:5px 8px;margin-left:9px}.timer-group{display:flex;align-items:center;gap:7px;font-size:15px;font-variant-numeric:tabular-nums}.timer-group .icon-button{width:29px;height:31px;font-size:18px;color:var(--muted)}.board-wrap{position:relative;border-radius:4px;overflow:hidden;box-shadow:0 6px 28px #1c3c7421}#board{display:grid;grid-template-columns:repeat(9,1fr);border:2px solid #546c90;background:var(--surface);aspect-ratio:1}.cell{min-width:0;padding:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);font-size:clamp(21px,2.8vw,32px);font-weight:450;position:relative;border-radius:0;display:grid;place-items:center;aspect-ratio:1;line-height:1}.cell:nth-child(9n){border-right:0}.cell:nth-child(n+73){border-bottom:0}.cell.box-right{border-right:2px solid #7d90ae}.cell.box-bottom{border-bottom:2px solid #7d90ae}.cell.related{background:#f1f5fc}.cell.match{background:#e0e9fc;color:#1c50c2}.cell.entered{color:var(--blue)}.cell.selected{background:#c4d9ff;box-shadow:inset 0 0 0 2px #5989e9;z-index:1}.cell.invalid{color:#c6374f;background:#fff0f1}.cell.selected.invalid{background:#fbdbe0}.cell-notes{display:grid;grid-template-columns:repeat(3,1fr);width:100%;height:100%;padding:3px;font-size:clamp(9px,1.2vw,12px);color:#6d809a;line-height:1}.cell-notes span{display:grid;place-items:center}.board-caption{display:flex;justify-content:space-between;margin-top:12px;color:var(--muted);font-size:12px}.tools{display:grid;grid-template-columns:repeat(4,1fr);margin:20px 0 21px}.tools button{display:flex;align-items:center;flex-direction:column;gap:9px;font-size:12px;color:#65768f}.tools button>span{height:28px;display:flex;align-items:center;font-size:27px;color:#42648c;position:relative}.tools small{position:absolute;font-size:8px;background:#dae1ed;top:-4px;right:-22px;border-radius:4px;padding:3px}.tools button[aria-pressed=true]{color:var(--blue)}.tools button[aria-pressed=true] small{background:var(--blue);color:#fff}.numpad{display:grid;grid-template-columns:repeat(9,1fr);gap:6px}.numpad button{background:#e5ecf8;color:var(--blue);border-radius:9px;font-size:29px;padding:10px 0 7px;display:flex;flex-direction:column;gap:5px;align-items:center}.numpad small{font-size:9px;color:#8194b6}.share-button{margin:25px auto 0;display:flex;gap:9px;align-items:center;font-size:13px;color:#667e9f;min-height:40px}footer{text-align:center;color:#9ba9be;font-size:12px;padding:37px 0 28px}.pause-overlay{position:absolute;inset:0;z-index:3;background:var(--surface);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:24px}.pause-overlay[hidden]{display:none}.pause-overlay span{font-size:20px}dialog{border:1px solid var(--line);border-radius:20px;background:var(--surface);color:var(--ink);padding:24px;width:min(420px,calc(100% - 32px));max-height:85dvh;box-shadow:0 20px 70px #172b4540}dialog::backdrop{background:#1e304a65;backdrop-filter:blur(4px)}.modal-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}h2{font-size:21px;margin:0}#modal-content p{line-height:1.75;font-size:14px;color:var(--muted)}.option-button{display:flex;justify-content:space-between;align-items:center;padding:17px 14px;margin:10px 0;border:1px solid var(--line);border-radius:11px;width:100%;text-align:left;font-size:16px}.option-button small{font-size:12px;color:var(--muted)}.setting-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0;font-size:14px;gap:12px}.setting-row input{width:21px;height:21px;accent-color:var(--blue)}.full{width:100%;margin-top:12px}#toast{position:fixed;z-index:10;bottom:calc(25px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);background:#253c61;color:white;padding:14px 20px;border-radius:12px;font-size:14px;max-width:calc(100% - 30px);width:max-content;box-shadow:0 8px 35px #14263b30}.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.stat-grid div{background:var(--soft);padding:17px;border-radius:12px}.stat-grid strong{display:block;font-size:28px;color:var(--blue);margin-top:10px}.stat-grid span{font-size:13px}.share-input{width:100%;padding:12px;border:1px solid var(--line);border-radius:8px;font:inherit;background:var(--surface);color:var(--ink)}.complete-score{text-align:center;font-size:45px;font-variant-numeric:tabular-nums;color:var(--blue);margin:25px}.complete-title{text-align:center;font-size:18px}.install-note{background:var(--soft);padding:13px;border-radius:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:760px){.app{max-width:510px;padding:0 20px}header{height:72px}.brand{font-size:18px}.brand-icon{width:29px;height:29px}.intro{padding:24px 0 20px}.intro h1{font-size:23px}.eyebrow{font-size:9px;letter-spacing:1.8px}.intro-mark{font-size:34px}.workspace{display:flex;flex-direction:column;gap:20px}.sidebar{display:flex;gap:10px;width:100%;padding:0}.daily-card{padding:13px 15px;border-radius:12px;gap:6px;flex:1}.daily-top{font-size:13px}.daily-card strong{font-size:14px;margin:0}.daily-card>span:nth-of-type(2),.daily-bottom,.side-note,.stats-link{display:none}.new-game{width:102px;margin:0;font-size:14px;justify-content:center;gap:8px}.game{width:100%}.game-meta{margin-bottom:11px}.cell{font-size:27px}.cell-notes{font-size:10px}.tools{margin:19px 0}.numpad{gap:4px}.numpad button{font-size:27px;border-radius:8px;padding:10px 0 7px}.share-button{margin-top:15px}footer{padding:20px 0 calc(20px + env(safe-area-inset-bottom))}.board-caption{font-size:12px}.mode-label{font-size:13px}.difficulty-label{margin-left:6px}.timer-group{font-size:14px}}
@media(max-width:370px){.app{padding:0 12px}.intro{padding:18px 0}.intro h1{font-size:21px}.cell{font-size:24px}.cell-notes{font-size:9px}.numpad button{font-size:24px}.tools{margin:15px 0}}
@media(prefers-reduced-motion:no-preference){button{transition:background-color .12s}dialog[open]{animation:appear .15s ease-out}@keyframes appear{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}}
[data-theme=dark]{background:#131e30;--surface:#1c2b42;--ink:#dce5f3;--line:#3e516c;--soft:#22334f;--muted:#9cacc4;--blue:#8bb4ff;color:var(--ink)}[data-theme=dark] header{border-color:#2e405b}[data-theme=dark] .brand-icon,[data-theme=dark] .primary{background:#386ce0;color:#fff}[data-theme=dark] .daily-card{background:#203859;color:#c2d7ff;border-color:#365177}[data-theme=dark] .daily-card>span:nth-of-type(2){color:#98b3db}[data-theme=dark] .cell.related{background:#233650}[data-theme=dark] .cell.match{background:#304971;color:#c2d7ff}[data-theme=dark] .cell.selected{background:#3d5c8b}[data-theme=dark] .cell.invalid{background:#572e3c;color:#ff9fae}[data-theme=dark] .numpad button,[data-theme=dark] .difficulty-label{background:#223a5d}[data-theme=dark] .tools button,[data-theme=dark] .tools button>span{color:#a5bbdc}

.mode-nav{display:flex;gap:25px;border-bottom:1px solid #dde5f2;margin-bottom:25px;align-items:center}.mode-nav>span,.mode-nav>button{font-size:15px;padding:15px 2px;font-weight:650}.mode-active{border-bottom:3px solid var(--blue);color:var(--blue)}.mode-nav>button{color:#667993}.mode-nav>button span{margin-left:6px;color:var(--blue)}.tools svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.race-panel{background:var(--soft);border:1px solid var(--line);border-radius:14px;margin-bottom:18px;padding:17px}.race-panel[hidden]{display:none}.race-heading{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;margin-bottom:16px}.race-heading button{font-size:11px;font-variant-numeric:tabular-nums;color:var(--blue);min-height:30px}.racer{display:grid;grid-template-columns:32px 1fr 48px;gap:10px;align-items:center;margin:13px 0}.racer-avatar{background:#315ed4;color:white;border-radius:50%;width:30px;height:30px;display:grid;place-items:center;font-size:12px}.racer-avatar.partner{background:#de8050}.racer-label{display:flex;justify-content:space-between;font-size:12px}.racer-label>span{color:var(--muted)}.racer>strong{text-align:right;color:var(--blue);font-size:13px;font-variant-numeric:tabular-nums}progress{height:5px;width:100%;border:0;appearance:none;border-radius:5px;overflow:hidden;background:#d9e2f2}progress::-webkit-progress-bar{background:#d9e2f2}progress::-webkit-progress-value{background:var(--blue);border-radius:5px}progress::-moz-progress-bar{background:var(--blue)}.waiting-note{font-size:12px;color:var(--muted);margin:0}.countdown{font-size:72px;color:var(--blue);font-weight:500}.pause-overlay p{font-size:13px;color:var(--muted)}.divider{text-align:center;font-size:12px;margin:25px 0 18px;color:var(--muted)}.input-label{display:block;font-size:13px;margin:10px 0}.rules{padding:13px;background:var(--soft);border-radius:10px}.signin-link{display:block;text-align:center;color:var(--blue);font-size:14px;margin-top:17px}.cell{touch-action:manipulation}#board[aria-busy=true]{opacity:.6}button{min-height:30px}.tools button{min-height:53px}.icon-button{min-height:42px}.numpad button{min-height:54px}input{font-size:16px!important}.intro{padding-top:28px}.workspace{gap:50px}@media(max-width:760px){header{height:65px}.intro{padding:19px 0 8px}.intro h1{font-size:22px;margin-top:8px}.intro-mark{font-size:29px}.mode-nav{margin-bottom:16px;gap:24px}.mode-nav>span,.mode-nav>button{padding:12px 2px;font-size:14px}.workspace{gap:15px}.app{padding-top:env(safe-area-inset-top)}.daily-card{padding:11px 14px}.daily-card strong{font-size:13px}.game-meta{margin-bottom:8px}.board-caption{margin-top:9px}.tools{margin:13px 0 15px}.share-button{margin-top:11px}footer{padding-top:12px}.race-panel{padding:12px;margin-bottom:12px}.race-heading{margin-bottom:8px}}
@media(max-width:760px){.intro{display:none}header{height:56px}.mode-nav{margin-bottom:12px}.mode-nav>span,.mode-nav>button{padding:12px 2px}.sidebar{min-height:44px}.daily-card{padding:8px 13px;gap:3px}.daily-top{font-size:12px}.daily-card strong{font-size:12px}.new-game{min-height:44px}.workspace{gap:8px}.game-meta{min-height:34px}.timer-group .icon-button{min-height:34px}.tools{margin:12px 0}.numpad button{min-height:54px}.game{scroll-margin-top:8px}}
[hidden]{display:none!important}.history-heading{font-size:15px;margin:24px 0 12px}

.auth-input{font-size:16px;text-align:left;letter-spacing:normal;margin-bottom:16px}.auth-error{color:#b8404c;font-size:14px;min-height:20px}.primary:disabled{opacity:.55;cursor:wait}