:root{--bg:#f5f7f8;--surface:#fff;--surface-alt:#edf4f3;--ink:#162b31;--muted:#667a80;--line:#dce5e5;--accent:#0b8d82;--accent-dark:#087268;--accent-soft:#e2f4ef;--shadow:0 18px 55px rgba(16,56,60,.055);color-scheme:light}
:root[data-theme=dark]{--bg:#101a20;--surface:#18272e;--surface-alt:#1e3539;--ink:#eef8f6;--muted:#abc0c0;--line:#30454a;--accent:#50d4bf;--accent-dark:#37bca8;--accent-soft:#1b4142;--shadow:0 18px 55px rgba(0,0,0,.13);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Manrope,'Noto Sans KR',sans-serif;line-height:1.65;transition:background .25s,color .25s}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.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}.skip-link{position:absolute;top:-70px;left:12px;z-index:100;background:var(--ink);color:var(--surface);padding:8px 14px;border-radius:8px}.skip-link:focus{top:12px}
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.header-inner{max-width:1280px;margin:auto;min-height:76px;padding:0 30px;display:flex;align-items:center;gap:38px}.brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:-.07em;white-space:nowrap}.brand-mark{height:34px;width:34px;border-radius:11px;background:var(--accent);color:#fff;display:inline-grid;place-items:center;font-family:DM Sans,sans-serif;font-size:19px;font-weight:700;letter-spacing:0;position:relative;box-shadow:0 6px 16px rgba(8,142,130,.18)}.brand-pulse{position:absolute;right:-3px;top:-3px;width:8px;height:8px;background:#ffc986;border:2px solid var(--surface);border-radius:50%}.brand-light{font-weight:500}.main-nav{display:flex;align-items:center;gap:23px;margin-left:auto;white-space:nowrap}.main-nav a{font-size:13px;font-weight:700;color:var(--muted);padding:28px 0;position:relative}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--ink)}.main-nav a[aria-current=page]:after{content:"";height:2px;background:var(--accent);position:absolute;bottom:20px;left:0;right:0;border-radius:3px}.theme-toggle{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;padding:9px 13px;font-size:13px;font-weight:700;white-space:nowrap}.theme-toggle:hover{border-color:var(--accent)}
.page-shell{max-width:1180px;padding:58px 30px 88px;margin:auto}.hero-copy{margin:0 auto 34px;max-width:800px;text-align:center}.eyebrow{color:var(--accent);font-family:DM Sans,sans-serif;font-weight:800;letter-spacing:.17em;font-size:11px;text-transform:uppercase;margin:0 0 17px}.eyebrow-line{display:inline-block;width:23px;height:1px;background:var(--accent);vertical-align:middle;margin:0 8px}.hero-copy h1{font-size:clamp(31px,4.2vw,54px);line-height:1.28;letter-spacing:-.075em;margin:0 0 15px;font-weight:800}.hero-copy>p:last-child{font-size:16px;color:var(--muted);margin:0}.clock-stage{border-radius:26px;min-height:425px;background:linear-gradient(120deg,#112e34 0%,#103e43 45%,#0f7168 100%);color:#fff;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;flex-direction:column;box-shadow:0 26px 70px rgba(13,72,76,.17);padding:55px 25px}.clock-orbit{position:absolute;border:1px solid rgba(185,250,235,.12);border-radius:50%;pointer-events:none}.clock-orbit-one{width:570px;height:570px;right:-75px;top:-255px}.clock-orbit-two{width:800px;height:800px;right:-150px;top:-460px}.stage-kicker{font-family:DM Sans,'Noto Sans KR',sans-serif;font-size:12px;letter-spacing:.07em;font-weight:700;margin:0 0 18px;opacity:.9}.live-dot{display:inline-block;background:#8decbe;height:7px;width:7px;border-radius:50%;margin-right:8px;box-shadow:0 0 0 5px rgba(141,236,190,.13)}.clock-digits,.timer-digits{font-family:DM Sans,Manrope,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:-.07em;line-height:1;font-weight:700}.clock-digits{font-size:clamp(62px,11vw,142px);position:relative}.clock-date{font-size:17px;font-weight:600;margin:24px 0 3px}.clock-zone{font-size:12px;opacity:.7;margin:0 0 26px}.clock-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;position:relative}.button{min-height:44px;border-radius:11px;padding:10px 19px;border:1px solid transparent;font-weight:800;font-size:13px;transition:transform .15s,background .15s,border-color .15s}.button:hover{transform:translateY(-1px)}.button-primary{color:#fff;background:#0a887e}.button-primary:hover{background:#076f68;color:#fff}.button-secondary{color:var(--accent-dark);background:var(--accent-soft)}.button-ghost{color:var(--muted);background:transparent;border-color:var(--line)}.button-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.23)}.button-light:hover{background:rgba(255,255,255,.21)}
.section{margin-top:80px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:24px}.section-heading h2,.related-tools h2{font-size:26px;letter-spacing:-.06em;line-height:1.3;margin:0}.section-heading .eyebrow{margin-bottom:7px}.section-heading>p{margin:0;color:var(--muted);font-size:13px}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{min-height:200px;border:1px solid var(--line);background:var(--surface);padding:27px;border-radius:18px;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .18s,border-color .18s}.tool-card:hover{transform:translateY(-4px);border-color:var(--accent);color:var(--ink)}.tool-card.featured{background:var(--accent-soft)}.card-number{font:700 11px DM Sans,sans-serif;letter-spacing:.13em;color:var(--accent);margin-bottom:22px}.tool-card h3{font-size:20px;letter-spacing:-.06em;margin:0 0 7px}.tool-card p{color:var(--muted);font-size:13px;line-height:1.7;margin:0 0 21px}.card-link{margin-top:auto;font-size:12px;font-weight:800;color:var(--accent-dark)}.card-link span{margin-left:6px}
.workspace{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:37px;box-shadow:var(--shadow);margin-bottom:18px}.focus-workspace{text-align:center}.workspace-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.status-pill{background:var(--accent-soft);color:var(--accent-dark);border-radius:99px;padding:7px 13px;font-size:12px;font-weight:800}.muted{color:var(--muted);font-size:13px}.timer-digits{text-align:center;font-size:clamp(76px,11vw,140px);margin:28px 0 18px}.progress-track{height:7px;border-radius:9px;background:var(--surface-alt);overflow:hidden;max-width:590px;margin:auto}.progress-fill{height:100%;width:0;background:var(--accent);transition:width .2s}.workspace-hint{color:var(--muted);text-align:center;margin:18px 0 25px;font-size:13px}.button-row{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}.settings-grid{border-top:1px solid var(--line);padding-top:26px;margin:31px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:740px;text-align:left}.settings-grid label,.compare-fields label,.alarm-form label{font-size:12px;font-weight:800;color:var(--muted);display:flex;flex-direction:column;gap:8px}.settings-grid label span{font-weight:500}.settings-grid input,.compare-fields select,.alarm-form input,.inline-form select{width:100%;min-height:44px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);padding:8px 12px;outline:none}.settings-grid input:focus,.compare-fields select:focus,.alarm-form input:focus,.inline-form select:focus{border-color:var(--accent);outline:2px solid var(--accent-soft)}.field-note{color:var(--muted);font-size:12px;line-height:1.7;margin:22px 0 0}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.stat-card{border:1px solid var(--line);border-radius:17px;background:var(--surface);padding:22px 25px;display:flex;flex-direction:column;gap:4px}.stat-card span{color:var(--muted);font-size:12px}.stat-card strong{font-size:28px;font-weight:800;letter-spacing:-.05em}.utility-row{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:16px;margin:12px 5px 20px}.text-button{background:none;border:0;color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px;font-size:12px;font-weight:700;padding:4px}.compact{margin-bottom:21px}.inline-form{display:flex;gap:10px}.inline-form select{max-width:330px}.city-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:23px}.city-card{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:17px 20px;min-height:115px}.city-top{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px}.city-card strong{display:block;font:700 31px DM Sans,sans-serif;letter-spacing:-.04em;margin:5px 0}.city-card small{color:var(--muted)}.icon-button{border:0;background:transparent;color:var(--muted);font-size:19px;line-height:1;padding:0 3px}.compare-fields{display:flex;gap:13px;align-items:end}.compare-fields label{flex:1}.compare-arrow{font-size:22px;color:var(--accent);padding-bottom:6px}.compare-result{font-size:18px;font-weight:700;letter-spacing:-.04em;margin:22px 0 0}.alarm-form{display:grid;grid-template-columns:1fr 2fr auto;gap:12px;align-items:end}.alarm-list{display:grid;gap:10px}.alarm-item{border:1px solid var(--line);border-radius:13px;padding:15px 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}.alarm-item time{font:700 32px DM Sans,sans-serif;letter-spacing:-.05em}.alarm-item .muted{display:block}.alarm-actions{display:flex;align-items:center;gap:12px}.alarm-actions label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:4px}.alarm-actions input{accent-color:var(--accent)}.empty-state{color:var(--muted);font-size:13px}.preset-row{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.preset-row button{border:1px solid var(--line);border-radius:99px;padding:7px 13px;background:var(--bg);color:var(--ink);font-size:12px;font-weight:700}.preset-row button:hover{border-color:var(--accent);color:var(--accent)}.timer-inputs{grid-template-columns:repeat(3,1fr);max-width:480px}.lap-list{display:grid;gap:0}.lap-row{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:12px 2px;font-variant-numeric:tabular-nums}.lap-row:last-child{border-bottom:0}.lap-row span:first-child{color:var(--muted);font-size:13px}.lap-row strong{font-size:14px}
.guide-panel,.content-panel{border:1px solid var(--line);border-radius:20px;background:var(--surface);padding:33px 38px;margin-top:30px;box-shadow:var(--shadow)}.guide-panel h2,.content-panel h2{font-size:20px;letter-spacing:-.05em;margin:0 0 10px}.guide-panel h3{font-size:16px;margin:26px 0 6px}.guide-panel p,.content-panel p{color:var(--muted);font-size:14px;line-height:1.85;margin:0 0 18px;max-width:880px}.content-panel h2:not(:first-child){margin-top:28px}.content-panel a{color:var(--accent-dark);text-decoration:underline}.related-tools{margin-top:70px}.related-tools .eyebrow{margin-bottom:7px}.related-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:21px}.related-links a{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px;font-size:12px;font-weight:700}.related-links a:hover{border-color:var(--accent)}.related-links span{color:var(--accent);margin-left:8px}.site-footer{border-top:1px solid var(--line);background:var(--surface)}.footer-inner{max-width:1180px;padding:38px 30px;margin:auto;display:grid;grid-template-columns:1fr auto;gap:10px}.footer-brand{font-size:17px}.footer-brand .brand-mark{width:28px;height:28px;font-size:16px;border-radius:8px}.footer-inner p{color:var(--muted);font-size:12px;margin:6px 0}.footer-inner nav{display:flex;align-items:flex-start;gap:18px}.footer-inner nav a{color:var(--muted);font-size:12px}.copyright{grid-column:1/-1}.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);z-index:50;background:var(--ink);color:var(--surface);padding:12px 20px;border-radius:11px;box-shadow:var(--shadow);font-size:13px;font-weight:700;max-width:min(90vw,500px);text-align:center}.toast[hidden]{display:none}
.meeting-panel{margin-top:24px;background:var(--surface-alt);border:1px solid var(--line);border-radius:14px;padding:18px 20px}.meeting-panel label{display:block;font-size:12px;font-weight:800;color:var(--muted);margin-bottom:9px}.meeting-panel input{min-height:44px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);padding:8px 12px;font:inherit}.meeting-panel p{margin:14px 0 0;font-size:14px;font-weight:700;line-height:1.7}
body:fullscreen .site-header,body:fullscreen .hero-copy,body:fullscreen .section,body:fullscreen .guide-panel,body:fullscreen .related-tools,body:fullscreen .site-footer{display:none}body:fullscreen .page-shell{max-width:none;margin:0;padding:0}body:fullscreen .clock-stage{min-height:100vh;border-radius:0}
@media(max-width:980px){.header-inner{gap:19px}.main-nav{gap:13px}.main-nav a{font-size:12px}.tool-grid{grid-template-columns:repeat(2,1fr)}.city-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.header-inner{padding:12px 18px;min-height:65px;flex-wrap:wrap;gap:8px}.brand{font-size:18px}.main-nav{order:3;width:100%;overflow-x:auto;gap:18px;margin-left:0;scrollbar-width:none}.main-nav::-webkit-scrollbar{display:none}.main-nav a{padding:8px 0 12px}.main-nav a[aria-current=page]:after{bottom:6px}.theme-toggle{margin-left:auto}.page-shell{padding:39px 17px 58px}.hero-copy{margin-bottom:25px}.hero-copy>p:last-child{font-size:14px}.clock-stage{min-height:360px;border-radius:20px}.clock-digits{font-size:clamp(56px,12vw,90px)}.clock-date{font-size:14px}.section{margin-top:54px}.section-heading{align-items:start;flex-direction:column;gap:7px}.tool-grid{grid-template-columns:1fr}.tool-card{min-height:170px}.workspace{padding:24px 18px}.timer-digits{font-size:clamp(66px,14vw,112px)}.settings-grid{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:1fr 1fr}.stats-grid .stat-card:last-child{grid-column:1/-1}.city-grid{grid-template-columns:1fr}.alarm-form{grid-template-columns:1fr 1fr}.alarm-form button{grid-column:1/-1}.guide-panel,.content-panel{padding:25px 20px}.footer-inner{padding:30px 18px}}@media(max-width:420px){.clock-digits{font-size:55px}.clock-actions{gap:6px}.clock-actions .button{padding:8px 10px;font-size:11px}.timer-digits{font-size:67px}.compare-fields{flex-direction:column;align-items:stretch}.compare-arrow{align-self:center;padding:0}.alarm-item{align-items:start;flex-direction:column}.alarm-actions{width:100%;justify-content:space-between}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}