/* 온라인 타이머·메트로놈 (kit.page 의 site.css 위에 얹는다). 색은 site.css 의 토큰을 그대로 쓴다. */
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}

.ck-hero{padding-bottom:8px}
.ck-hero h1{font-size:clamp(1.75rem,1.15rem + 2.6vw,2.75rem)}
.ck-band{padding-block:16px 8px}
.ck-article-band{padding-top:24px}

.ck-tool{max-width:860px;margin-inline:auto;display:grid;gap:16px;min-width:0}
.ck-tool [hidden]{display:none!important}
.ck-tool :where(input,select,button,summary):focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.ck-tool>*{min-width:0}

/* 모드 탭 */
.ck-tabs{display:flex;flex-wrap:wrap;gap:8px}
.ck-tabs [role=tab]{min-height:44px;padding:8px 16px;border:1px solid var(--control);border-radius:8px;background:var(--panel);color:var(--ink);font:600 15px/1.3 var(--sans);cursor:pointer;display:inline-flex;align-items:center}
.ck-tabs [role=tab]:hover{border-color:var(--ink)}
.ck-tabs [role=tab][aria-selected=true]{background:var(--accent);border-color:var(--accent);color:#fff}
.ck-tabs [role=tab].is-live::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor;margin-right:8px;flex:none}

/* 입력 묶음 */
.ck-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px clamp(14px,3vw,20px)}
.ck-fields{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.ck-field{display:flex;flex-direction:column;gap:4px;flex:1 1 84px;max-width:150px;min-width:0}
.ck-field.ck-wide{flex:1 1 220px;max-width:none}
.ck-field label,.ck-opt label:not(.ck-check){font-size:14.5px;font-weight:600;color:var(--ink2);line-height:1.4}
.ck-tool :where(input[type=number],input[type=time],select){width:100%;min-height:44px;padding:8px 10px;border:1px solid var(--control);border-radius:8px;background:#fff;color:var(--ink);font:500 16px/1.3 var(--sans);font-variant-numeric:tabular-nums}
.ck-tool input[type=range]{accent-color:var(--accent);height:44px;margin:0;cursor:pointer}
.ck-tool input[type=checkbox]{width:22px;height:22px;accent-color:var(--accent);flex:none;margin:0}
.ck-tool :disabled{opacity:.55;cursor:not-allowed}
.ck-quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.ck-quick+.ck-fields{margin-top:14px}
.ck-quick .btn,.ck-mini{min-height:44px;padding:8px 16px;font-size:15px}
.ck-note{margin:12px 0 0;font-size:14.5px;line-height:1.6;color:var(--ink2)}
.ck-hint{margin:0;padding:10px 14px;border-radius:8px;background:var(--soft);color:var(--ink);font-size:15px;line-height:1.6}
.ck-error{margin:12px 0 0;color:#a12a12;font-weight:600;font-size:15px}
.ck-other{margin:16px 0 0;font-size:15px;color:var(--ink2);display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;justify-content:center}

/* 표시 영역 */
.ck-display{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:clamp(20px,4vw,36px) clamp(14px,3vw,36px);text-align:center;min-width:0}
.ck-display[data-state=running],.ck-display[data-state=work]{border-color:var(--accent)}
.ck-display[data-state=rest]{border-color:#2f5f8a}
.ck-display[data-state=rest] .ck-bar span{background:#2f5f8a}
.ck-display[data-state=rest] .ck-label{color:#2f5f8a}
.ck-display[data-state=done],.ck-display[data-state=ended]{border-color:#8a3b0a}
.ck-display[data-state=done] .ck-time,.ck-display[data-state=ended] .ck-time{color:#8a3b0a}
.ck-label{margin:0 0 4px;font-size:clamp(1rem,.95rem + .3vw,1.2rem);font-weight:600;color:var(--accent-ink);min-height:1.7em}
.ck-time{font-size:clamp(3.4rem,17vw,8rem);font-weight:600;line-height:1.08;letter-spacing:-.02em;font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;color:var(--ink);overflow-wrap:normal;word-break:normal}
.ck-time.is-sw{font-size:clamp(2.4rem,11.5vw,5.5rem)}
.ck-bar{height:8px;border-radius:99px;background:var(--soft);margin:20px auto 0;max-width:560px;overflow:hidden}
.ck-bar span{display:block;height:100%;width:0;background:var(--accent);border-radius:99px}
.ck-controls{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}
.ck-big{min-width:140px;min-height:56px;font-size:18px}
.ck-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 16px;margin:22px auto 0;max-width:520px;text-align:left}
.ck-stats div{border-top:1px solid var(--line);padding-top:8px;min-width:0}
.ck-stats dt{font-size:13.5px;font-weight:600;color:var(--ink2)}
.ck-stats dd{margin:2px 0 0;font-size:1.15rem;font-weight:600;font-variant-numeric:tabular-nums}
@media(min-width:640px){.ck-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.lap-head,.ck-laps li{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(0,1.2fr);gap:8px;font-variant-numeric:tabular-nums;text-align:right}
.lap-head{margin-top:18px;font-size:13.5px;font-weight:600;color:var(--ink2);padding:0 6px}
.ck-laps{list-style:none;margin:4px 0 0;padding:0;max-height:260px;overflow:auto;border-top:1px solid var(--line)}
.ck-laps li{padding:8px 6px;border-bottom:1px solid var(--line);font-size:1.05rem}
.ck-laps .lap-n{text-align:left;color:var(--ink2)}

/* 옵션 */
.ck-opts{margin:0;border:1px solid var(--line);border-radius:var(--r);background:var(--panel);padding:12px clamp(14px,3vw,20px) 6px;min-width:0}
.ck-opts legend{padding:0 8px;font-weight:700;font-size:1rem}
.ck-opt{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;margin:0 0 10px;min-width:0}
.ck-opt>label:not(.ck-check){min-width:6.5em}
.ck-opt select{flex:1 1 150px;max-width:260px}
.ck-opt input[type=range]{flex:1 1 160px;max-width:300px}
.ck-opt input[type=number]{width:96px}
.ck-check{display:inline-flex;align-items:center;gap:10px;min-height:44px;cursor:pointer;font-size:15.5px;font-weight:500}
.ck-inline{display:inline-flex;align-items:center;gap:8px;color:var(--ink2);font-size:15px}
.ck-inline input{width:84px!important}

/* 메트로놈 */
.ck-bpm-row{display:flex;align-items:center;justify-content:center;gap:clamp(8px,3vw,24px)}
.ck-round{width:56px;height:56px;border-radius:50%;border:1px solid var(--control);background:var(--panel);color:var(--ink);font:500 30px/1 var(--sans);cursor:pointer;flex:none;padding:0}
.ck-round:hover{border-color:var(--ink)}
.ck-bpm-box{display:flex;align-items:baseline;justify-content:center;gap:6px;min-width:0}
.ck-tool .ck-bpm-box input{width:3.2ch;min-height:0;padding:0;border:0;border-bottom:2px solid var(--line);border-radius:0;background:transparent;text-align:center;font-size:clamp(3.4rem,17vw,6.5rem);font-weight:600;line-height:1.1;letter-spacing:-.02em;-moz-appearance:textfield;appearance:textfield}
.ck-bpm-box input::-webkit-outer-spin-button,.ck-bpm-box input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.ck-unit{font-size:1rem;font-weight:600;color:var(--ink2)}
.ck-term{margin:4px 0 0;font-size:clamp(1rem,.95rem + .3vw,1.2rem);font-weight:600;color:var(--accent-ink);min-height:1.7em}
.ck-slider{display:block;width:100%;max-width:560px;margin:8px auto 0!important}
.ck-leds{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:18px 0 4px;min-height:30px}
.led{width:28px;height:28px;border-radius:50%;border:2px solid var(--control);background:var(--soft);transition:transform .05s}
.led.first{border-color:#a8480b}
.led.on{background:var(--accent);border-color:var(--accent);transform:scale(1.15)}
.led.on-strong{background:#a8480b;border-color:#a8480b;transform:scale(1.15)}
.ck-bar-count{margin:6px 0 0;min-height:1.6em;color:var(--ink2);font-size:15px;font-variant-numeric:tabular-nums}
.ck-grid{display:grid;gap:16px}
@media(min-width:760px){.ck-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}}
.ck-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px clamp(14px,3vw,20px) 8px;min-width:0}
.ck-h{font-size:1.05rem;line-height:1.4;margin:0 0 12px;letter-spacing:0}
.ck-card .ck-fields{margin-bottom:6px}
.ck-practice-left{margin:10px 0;font-weight:600;font-variant-numeric:tabular-nums;color:var(--accent-ink)}
.ck-kb ul{margin:0 0 8px;padding-left:1.2em;color:var(--ink2);font-size:15px}
.ck-kb li{margin:.3em 0}

/* 전체 화면 */
.ck-tool:fullscreen{max-width:none;background:var(--bg);padding:clamp(12px,3vw,32px);overflow:auto;align-content:start}
.ck-tool:-webkit-full-screen{max-width:none;background:var(--bg);padding:16px;overflow:auto;align-content:start}
.ck-tool:fullscreen .ck-time{font-size:clamp(5rem,24vw,20rem)}

/* 설명 글 */
.ck-prose{max-width:46em;margin-inline:auto;line-height:1.85}
.ck-prose h2{margin-top:2.2em;font-size:clamp(1.35rem,1.1rem + 1vw,1.75rem)}
.ck-prose h2:first-child{margin-top:0}
.ck-prose h3{margin-top:1.6em;font-size:clamp(1.1rem,1rem + .4vw,1.25rem)}
.ck-prose :where(ol,ul){padding-left:1.4em;margin:0 0 1.1em}
.ck-prose li{margin:.45em 0}
.ck-prose p{margin:0 0 1.1em}
.ck-related{list-style:none;padding:0!important;display:grid;gap:4px}
.ck-related li{display:flex;align-items:center;flex-wrap:wrap;gap:4px 10px;min-height:44px;margin:0}
.ck-tag{font-size:13px;color:var(--ink2);border:1px solid var(--line);border-radius:6px;padding:0 8px;line-height:1.7}

@media(prefers-reduced-motion:reduce){.ck-tool *{transition:none!important;animation:none!important}}
@media(max-width:380px){.ck-big{min-width:0;flex:1 1 120px}}