:root{--bg:#f5f4f0;--paper:#fff;--ink:#282e2a;--muted:#90958e;--line:#e6e8e1;--accent:#e56640;--soft:#f9eee8;--mode:#e56640;font-family:'DM Sans','Noto Sans KR',sans-serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button{border:0;background:none}svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}a{color:inherit;text-decoration:none}.site-header{height:100px;padding:0 5.2%;border-bottom:1px solid #dedfd7;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:39px;height:39px;border-radius:11px;display:grid;place-items:center;background:var(--accent);color:white}.brand-mark 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var(--line);display:flex;flex-direction:column;background:#fdfdfb}.inspector-top{display:flex;justify-content:space-between;align-items:center}.section-label{font-size:10px;color:#949b8a;letter-spacing:1.4px}.live{display:flex;align-items:center;gap:5px;font-size:11px;color:#8d977e}.live i{width:4px;height:4px;background:#9ba68b;border-radius:50%}h2{font-size:22px;font-weight:600;letter-spacing:-.7px;margin:24px 0 9px}.inspector-description{font-size:13px;line-height:1.9;color:#91988a;margin:0}.primary-reading{display:flex;align-items:baseline;gap:10px;color:var(--mode);margin-top:24px;white-space:nowrap}.primary-reading>span:first-child{font-size:58px;line-height:1.15;font-weight:500;letter-spacing:-2.5px;font-variant-numeric:tabular-nums}.primary-reading>span:last-child{font-size:22px;letter-spacing:-.5px}.reading-caption{font-size:12px;color:#9da392;margin-top:8px}.measurement-fields{margin-top:24px}.field-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;gap:8px}.field-row label{font-size:13px;color:#7d8773}.field-input{display:flex;align-items:center;border:1px solid #e0e4da;border-radius:6px;background:white;width:110px;overflow:hidden}.field-input input{width:78px;min-width:0;border:0;padding:8px 5px 8px 10px;outline-offset:-2px;color:#4b5740;font-size:15px;font-variant-numeric:tabular-nums}.field-input span{font-size:12px;color:#a0a791}.secondary-readings{border-top:1px solid var(--line);padding-top:15px;margin-top:2px}.secondary-readings:empty{display:none}.secondary-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:13px;color:#87907d}.secondary-row strong{font-size:16px;color:#4b5740;font-weight:500}.precision-box{margin-top:auto;padding-top:27px;display:flex;gap:8px;align-items:flex-start}.precision-box>svg{width:15px;flex-shrink:0;color:#a4ad96;margin-top:3px}.precision-box p{font-size:12px;line-height:1.9;color:#9ca58f;margin:0}.precision-box button{padding:0;font-size:12px;color:#747f65}.precision-box button span{margin-left:5px}.instrument-bottom{height:40px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 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13px;margin:20px -8px;background:#f6f7f2;border-radius:10px}.calibration-preview #cardReference{width:323.57px;height:120px;border:1px solid #bbc3ae;border-radius:10px;padding:18px;display:flex;flex-direction:column;color:#778669;position:relative;background:#edf0e5}.calibration-preview svg{width:33px;height:27px}.calibration-preview span{font-size:12px;margin-top:13px}.calibration-preview strong{position:absolute;right:17px;bottom:17px;font-size:20px;font-weight:500}.calibration-line{width:323.57px;border-bottom:2px solid var(--accent);margin:15px 0 8px;display:flex;justify-content:space-between}.calibration-line i{height:10px;border-left:2px solid var(--accent);margin-bottom:-5px;transform:translateY(-5px)}.calibration-range-label{display:flex;justify-content:space-between;font-size:13px;color:#849174}.calibration-range-label output{font-size:15px;color:var(--accent)}input[type=range]{width:100%;accent-color:var(--accent);margin:18px 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@media(min-width:1450px){main{padding-top:58px}.instrument-body,.workspace{min-height:530px}.instrument-body{grid-template-columns:minmax(0,1fr) 280px}.inspector{padding:32px}.primary-reading>span:first-child{font-size:66px}.quick-guide{padding-top:40px;padding-bottom:40px}}
@media(max-width:1050px){.mode{padding:10px 9px}.instrument-toolbar{padding:0 14px;gap:8px}.toolbar-actions{gap:5px}.instrument-body{grid-template-columns:minmax(0,1fr) 220px}.inspector{padding:25px 19px}.quick-guide{gap:14px}.guide-item{gap:8px}.guide-title{font-size:12px}main{padding-left:4%;padding-right:4%}}
@media(max-width:760px){.site-header{height:77px;padding:0 5%}.brand-mark{width:33px;height:33px}.brand strong{font-size:25px}.header-note{display:none}.brand-en{font-size:12px;margin-left:10px}main{padding:30px 4% 0}.intro{align-items:flex-start;gap:12px;flex-direction:column;margin-bottom:22px}h1{font-size:32px;letter-spacing:-1.5px}.eyebrow{font-size:10px}.intro p{font-size:13px}.calibration-shortcut{font-size:12px;margin-top:4px;padding:7px 9px}.instrument-toolbar{height:auto;flex-wrap:wrap;padding:10px;gap:9px}.mode-tabs{width:100%;justify-content:space-between;gap:2px}.mode{flex-direction:column;gap:6px;font-size:12px;padding:9px 10px;flex:1}.mode svg{width:19px}.toolbar-actions{width:100%;justify-content:flex-end;padding-top:4px;border-top:1px solid var(--line)}.unit-switch{margin-right:auto}.instrument-body{grid-template-columns:1fr}.workspace{min-height:380px}.inspector{border-left:0;border-top:1px solid var(--line);padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.inspector-top{grid-column:1/-1}.inspector h2{margin-top:16px;font-size:20px}.inspector-description{grid-column:1;line-height:1.7;font-size:12px}.primary-reading{grid-column:2;grid-row:2/4;margin-top:12px;justify-content:flex-end;align-self:center}.primary-reading>span:first-child{font-size:48px}.reading-caption{grid-column:2;text-align:right;margin:4px 0 0}.measurement-fields{grid-column:1/-1;margin-top:16px;display:flex;gap:15px}.field-row{flex:1;margin:0;gap:5px}.secondary-readings{grid-column:1/-1;display:flex;gap:20px;margin-top:15px;padding-top:14px}.secondary-row{flex:1;margin-bottom:0}.precision-box{grid-column:1/-1;padding-top:18px}.precision-box p{display:flex;gap:10px;align-items:center}.precision-box p br{display:none}.instrument-bottom{padding:0 12px;font-size:10px}.scale-info{font-size:10px}.canvas-label{left:60px}.canvas-brand{left:60px;font-size:7px}.canvas-hint{font-size:11px}.quick-guide{grid-template-columns:1fr;gap:18px;padding:25px 9px}.guide-title{font-size:13px;margin-bottom:2px}.guide-item{gap:15px}.guide-item h3{font-size:13px}.guide-item p{font-size:12px}.step{font-size:13px}footer{padding:22px 3px;flex-wrap:wrap;gap:17px}footer>span:nth-child(2){display:none}dialog{padding:29px 22px}.calibration-preview{padding-left:8px}.dialog-actions button{flex:1;padding:12px 10px}dialog>p{font-size:13px}.instrument:fullscreen{overflow:auto}.instrument:fullscreen .workspace{min-height:calc(100dvh - 170px)}.instrument:fullscreen .inspector{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.header-links{display:flex;align-items:center;gap:27px;font-size:13px;color:#7f8873}.language-link{font-size:12px;display:inline-flex;gap:13px;align-items:center;border:1px solid #dcded4;border-radius:5px;padding:7px 10px;margin-left:auto;margin-right:20px}.header-links .language-link{margin:0}.breadcrumb{display:flex;gap:10px;color:#9ba58e;font-size:12px;margin:-19px 0 25px}.breadcrumb a{color:#647452}.hub-hero{position:relative;padding:20px 0 68px;isolation:isolate;overflow:hidden}.hub-hero h1{font-size:58px;line-height:1.35;letter-spacing:-2.8px;margin:18px 0}.hub-hero p{font-size:16px;line-height:1.9;color:#8b947e}.hero-period{color:var(--accent)}.hero-meta{display:flex;gap:24px;font-size:12px;color:#909b81;margin-top:28px}.hero-meta>span:first-child{color:var(--accent)}.hero-ruler{position:absolute;width:45%;right:-20px;top:90px;transform:rotate(-15deg);background:#f1e2d5;border:1px solid #e5c6b2;height:163px;border-radius:6px;box-shadow:0 20px 35px #79502c0a;z-index:-1;opacity:.9;overflow:hidden}.hero-ruler>div{display:flex;justify-content:space-between;height:95px}.hero-ruler i{height:55px;border-left:1px solid #bf8466;position:relative;flex:1;background:repeating-linear-gradient(to right,transparent 0,transparent calc(10% - 1px),#c5987d calc(10% - 1px),#c5987d 10%) top left/100% 20px no-repeat}.hero-ruler i span{position:absolute;top:65px;left:-5px;font-size:21px;font-style:normal;color:#bc7755}.hero-ruler>span{font-size:10px;letter-spacing:2px;position:absolute;bottom:17px;left:22px;color:#bc7755}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:25px}.section-heading h2{font-size:26px;font-weight:500;margin:8px 0 0;letter-spacing:-1px}.section-heading>a{font-size:13px;color:#939e82}.section-aside{font-size:12px;color:#a0aa90;letter-spacing:2px}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{border:1px solid #dce1d2;border-radius:11px;background:#fafbf7;padding:25px;display:flex;flex-direction:column;transition:transform .15s,border-color .15s}.tool-card:hover{transform:translateY(-3px);border-color:#c9a18b;background:#fffdf9}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:27px}.tool-symbol{display:grid;place-items:center;width:44px;height:44px;border-radius:10px;background:#f7e8df;color:var(--accent);font-size:30px;line-height:1}.tool-card:nth-child(2) .tool-symbol{background:#e5eee5;color:#5e8268}.tool-card:nth-child(3) .tool-symbol{background:#f5eade;color:#ba8651}.tool-card:nth-child(4) .tool-symbol{background:#f2e4e9;color:#b16883}.tool-card:nth-child(5) .tool-symbol{background:#e5e6ef;color:#757da1}.card-index{color:#a9b09d;font-size:12px}.tool-card h3{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:20px;letter-spacing:-.6px;font-weight:500;margin:0 0 12px}.tool-card h3>span{font-size:23px;color:#b1b79f}.tool-card p{font-size:13px;color:#929d81;line-height:1.9;margin:0 0 22px;flex:1}.card-cta{font-size:12px;color:#83916f;display:flex;gap:12px}.calibration-callout{margin:32px 0 0;padding:25px 29px;background:#ebeee2;border:1px solid #dfe5d4;border-radius:10px;display:flex;align-items:center;gap:20px}.callout-icon{font-size:34px;color:#95a27f}.calibration-callout h2{font-size:17px;letter-spacing:-.3px;margin:0 0 7px}.calibration-callout p{font-size:13px;line-height:1.8;margin:0;color:#8c987b}.calibration-callout>a{font-size:13px;color:#6f8059;margin-left:auto;white-space:nowrap}.home-explainer{max-width:770px;padding:65px 0}.home-explainer h2{font-size:28px;margin:14px 0}.home-explainer p{font-size:16px;line-height:2;color:#8d9780}.content-footer{border-top:1px solid #dcdfd3}.content-footer nav{display:flex;gap:20px;font-size:12px;color:#929e81}.tool-article{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:65px;padding:55px 0 35px;max-width:1120px}.article-main>h2{font-size:30px;margin:12px 0 18px;font-weight:500}.article-main p,.info-article p{font-size:16px;line-height:2.1;color:#818e72;word-break:keep-all}.article-intro{font-size:17px!important;line-height:2!important;color:#7b896b!important}.article-main>section:not(.faq){margin:33px 0;position:relative;padding-left:37px}.article-number{position:absolute;left:0;top:4px;font-size:12px;color:#b0b89f}.article-main h3{font-size:21px;font-weight:500;letter-spacing:-.5px;margin:0 0 10px}.article-main section>p{margin:0}.article-sidebar{border-left:1px solid #dce1d2;padding-left:28px;align-self:start}.article-sidebar h3{font-size:17px;margin:15px 0 10px;line-height:1.8;font-weight:500}.article-sidebar p{font-size:13px;line-height:1.9;color:#929e81}.article-sidebar>a{font-size:12px;color:var(--accent);line-height:1.8}.article-nav{margin-top:35px}.article-nav>a{display:flex;justify-content:space-between;padding:13px 0;font-size:13px;color:#899779;border-bottom:1px solid #e2e6d9}.article-nav>.section-label{display:block;margin-bottom:10px}.faq{margin:40px 0}.faq h2{font-size:24px;margin:0 0 20px}.faq details{border-bottom:1px solid #dfe4d5;padding:17px 0;font-size:16px}.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:15px;line-height:1.8;color:#687957}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';font-size:22px;color:#9caa87}.faq details[open] summary:after{content:'−'}.faq details p{font-size:15px;margin-top:12px;line-height:1.9}.related-tools{padding:35px 0 55px;border-top:1px solid #dce1d2}.related-tools .tool-grid{grid-template-columns:repeat(4,1fr)}.related-tools .tool-card{padding:21px}.related-tools .tool-card h3{font-size:16px}.related-tools .tool-card p{font-size:12px}.info-article{max-width:760px;padding:20px 0 75px}.info-article h1{font-size:41px;margin-top:15px}.info-article h2{font-size:22px;margin:35px 0 10px}.info-article a:not(.primary-button){color:var(--accent);text-decoration:underline}.inline-button{display:inline-block;margin-top:20px}.ad-placement{margin:34px 0;padding:12px;background:#f1f2ec;border:1px solid #e2e6d9;text-align:center;border-radius:6px;overflow:hidden}.ad-placement[hidden]{display:none}.ad-placement>span{font:9px sans-serif;color:#9da78e;letter-spacing:1px}.ad-container{min-height:110px;margin-top:10px}.ad-preview .ad-container{display:grid;place-items:center;color:#b0b79f;font-size:13px}.article-main .ad-container{min-height:250px}a.mode{cursor:pointer}.instrument-toolbar a.mode{line-height:19px}.tool-card,.calibration-callout{scroll-margin-top:25px}html[lang=en] .brand strong{font-size:24px;letter-spacing:-1px}html[lang=en] .brand-en{font-size:10px;letter-spacing:1px}html[lang=en] .hub-hero h1{font-size:54px;letter-spacing:-2px}html[lang=en] h1{letter-spacing:-1.2px}html[lang=en] .header-note{font-size:12px}html[lang=en] .primary-reading>span:first-child{font-size:50px}
@media(max-width:1100px){.hero-ruler{width:40%;right:-40px;top:100px}.hub-hero h1,html[lang=en] .hub-hero h1{font-size:45px}.related-tools .tool-grid{grid-template-columns:repeat(2,1fr)}.tool-article{gap:32px;grid-template-columns:minmax(0,1fr) 220px}}
@media(max-width:760px){.header-links{gap:12px}.header-links>a:not(.language-link){display:none}.header-links .language-link{display:inline-flex}.site-header>.language-link{margin-right:13px;font-size:11px;padding:6px 8px}.help-button{font-size:12px}.hub-hero{padding-top:9px;padding-bottom:40px}.hub-hero h1,html[lang=en] .hub-hero h1{font-size:40px;letter-spacing:-1.7px;line-height:1.4}.hub-hero p{font-size:15px}.hero-ruler{display:none}.hero-meta{gap:17px;font-size:11px;margin-top:22px}.section-heading h2{font-size:23px}.tool-grid{grid-template-columns:1fr 1fr;gap:11px}.tool-card{padding:18px 15px}.card-top{margin-bottom:20px}.tool-symbol{width:36px;height:36px;font-size:25px}.tool-card h3{font-size:16px}.tool-card p{font-size:12px;line-height:1.8;margin-bottom:16px}.tool-card h3>span{font-size:20px}.card-cta{font-size:11px}.calibration-callout{flex-wrap:wrap;padding:22px 19px;gap:12px}.callout-icon{font-size:28px}.calibration-callout>div{flex:1}.calibration-callout h2{font-size:15px;line-height:1.8}.calibration-callout p{font-size:12px}.calibration-callout>a{margin-left:37px;font-size:12px}.home-explainer{padding:40px 0}.home-explainer h2{font-size:23px}.home-explainer p{font-size:15px}.content-footer{gap:20px}.content-footer nav{gap:16px;font-size:11px}.content-footer>span:last-child{display:none}.tool-article{grid-template-columns:1fr;gap:10px;padding-top:38px}.article-main>h2{font-size:25px;line-height:1.5}.article-intro{font-size:15px!important}.article-main>section:not(.faq){padding-left:27px;margin:27px 0}.article-main h3{font-size:18px;line-height:1.7}.article-main p,.info-article p{font-size:15px;line-height:2}.article-sidebar{display:none}.related-tools{padding:25px 0 35px}.related-tools .tool-card{padding:17px 14px}.related-tools .section-heading h2{font-size:23px}.section-heading>a{font-size:12px}.breadcrumb{margin:-8px 0 21px;font-size:11px}.info-article{padding-top:10px;padding-bottom:40px}.info-article h1{font-size:32px}.info-article h2{font-size:22px}.ad-placement{margin:26px 0}.ad-container{min-height:100px}.instrument-toolbar .mode{padding:9px 6px}html[lang=en] .brand strong{font-size:22px}html[lang=en] .brand-en{display:none}html[lang=en] .mode{font-size:11px}html[lang=en] .field-row label{font-size:12px}}
/* Physical calibration: a free measuring surface, top slider, bottom controls. */
.calibrating{overflow:hidden}.calibration-warning{border-left:3px solid var(--accent);padding:0 0 0 12px;margin-top:22px}.calibration-warning strong{font-size:28px;line-height:1.45;letter-spacing:-1px;color:var(--accent);display:block}.calibration-warning>span{font-size:12px;color:#838b7b;line-height:1.8;display:block;margin-top:9px}.calibration-warning[hidden],.unit-switch[hidden],.marking-panel[hidden]{display:none!important}
#calibrationDialog{position:fixed;inset:0;width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;margin:0;padding:0;border:0;border-radius:0;background:#f8f8f3;overflow:hidden;box-shadow:none}#calibrationDialog .dialog-close{top:18px;right:25px;width:38px;height:38px;z-index:5;font-size:34px;border-radius:50%;background:#eeeee6}.calibration-topbar{position:absolute;left:32px;top:23px;right:95px;max-width:720px;z-index:3;padding-bottom:12px;background:#f8f8f3}.calibration-topbar .calibration-range-label{font-size:16px;color:#657653}.calibration-topbar output{font-size:17px}.calibration-topbar input{margin:15px 0 10px}.calibration-topbar>span{font-size:13px;color:#849573}.calibration-guide-surface{position:absolute;left:32px;top:120px;bottom:0;right:440px;overflow:hidden;min-width:132px}.calibration-vertical-guides{height:100%;position:relative;border-top:2px solid var(--accent);background:linear-gradient(180deg,#f7e9de88,transparent 45%);width:323.57px}.calibration-vertical-guides>i{position:absolute;top:0;bottom:0;border-left:2px solid var(--accent)}.calibration-vertical-guides>i:first-child{left:0}.calibration-vertical-guides>i:nth-child(2){right:0}.calibration-vertical-guides>span{position:absolute;left:50%;top:15px;transform:translateX(-50%);font-size:22px;color:var(--accent);white-space:nowrap}.calibration-vertical-guides #cardReference{position:absolute;left:0;bottom:0;height:160px;border:1px dashed #d3b6a0;border-radius:10px 10px 0 0;background:#f4eee5;display:flex;flex-direction:column;justify-content:center;padding:20px;max-width:none;color:#b39a84}.calibration-vertical-guides #cardReference>svg{width:33px;height:26px;margin-bottom:13px}.calibration-vertical-guides #cardReference>span{font-size:13px}.calibration-vertical-guides #cardReference>strong{font-size:20px;font-weight:500;position:absolute;bottom:22px;right:22px}.calibration-message{position:absolute;right:32px;top:160px;width:365px}.calibration-message h2{font-size:49px;line-height:1.4;letter-spacing:-2px;color:var(--accent);font-weight:600;margin:18px 0}.calibration-message p{font-size:16px;line-height:1.9;color:#859273;margin:0}.calibration-bottom-controls{position:absolute;right:32px;bottom:24px;width:365px;padding-top:20px;border-top:1px solid #dce1d2}.calibration-bottom-controls .manual-calibration{font-size:15px}.calibration-bottom-controls .manual-calibration input{font-size:20px;width:110px;padding:9px}.calibration-bottom-controls .dialog-note{font-size:13px!important;margin:13px 0!important;color:#8c967d;line-height:1.8}.calibration-error{font-size:13px;color:#c65c3c;line-height:1.7;margin:0 0 13px}.calibration-error:empty{display:none}.calibration-bottom-controls .dialog-actions{justify-content:space-between}.calibration-bottom-controls .primary-button{flex:1}.calibration-bottom-controls .secondary-button{background:#f8f8f3}.marking-panel{border-top:1px solid var(--line);padding:22px;background:#fcfcf8;display:grid;grid-template-columns:1fr auto;gap:12px 22px}.marking-summary{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 16px}.marking-summary>.section-label{width:100%;font-size:11px}.marking-summary>strong{font-size:34px;font-weight:500;color:var(--mode);font-variant-numeric:tabular-nums;letter-spacing:-1px}.marking-summary small{font-size:17px;font-weight:400;letter-spacing:0}#markingBreakdown{font-size:13px;color:#829070}.marking-controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.marking-controls button{font-size:13px;padding:11px 13px}.marking-controls .primary-button{background:var(--mode)}.marking-controls button:disabled{opacity:.38;cursor:default}.marking-panel>p{font-size:13px;line-height:1.8;color:#879575;grid-column:1/-1;margin:0}.marking-panel>ol{grid-column:1/-1;list-style:none;display:flex;gap:8px;margin:0;padding:0;flex-wrap:wrap;max-height:95px;overflow:auto}.marking-panel li{display:flex;gap:12px;font-size:12px;color:#879575;background:#edf0e6;border-radius:5px;padding:7px 9px}.marking-panel li strong{font-weight:500;color:#5e704c}.marking-panel>ol:empty{display:none}.instrument:fullscreen .marking-panel{flex-shrink:0}.instrument:fullscreen .instrument-body{min-height:200px}.instrument:fullscreen .workspace{min-height:200px}
@media(max-width:1050px){.marking-panel{grid-template-columns:1fr}.marking-controls{gap:6px}.calibration-guide-surface{right:390px}.calibration-message,.calibration-bottom-controls{width:325px}.calibration-message h2{font-size:44px}}
@media(max-width:760px){.calibration-warning{grid-column:1/-1;margin-top:20px}.calibration-warning strong{font-size:29px}.calibration-warning strong br{display:none}.calibration-warning>span{font-size:13px}.marking-panel{padding:18px 15px;gap:14px}.marking-summary>strong{font-size:34px}.marking-controls{display:grid;grid-template-columns:1fr 1fr}.marking-controls button{font-size:12px;padding:12px 8px}.marking-controls .primary-button{font-size:13px}.marking-panel>p{font-size:12px}.calibration-topbar{left:20px;right:66px;top:20px}.calibration-topbar .calibration-range-label{font-size:15px}.calibration-topbar>span{font-size:12px;line-height:1.7;display:block}.calibration-topbar output{font-size:15px}.calibration-guide-surface{left:20px;right:20px;top:250px;bottom:215px}.calibration-message{right:20px;left:20px;top:135px;width:auto}.calibration-message .eyebrow{display:none}.calibration-message h2{font-size:28px;line-height:1.3;letter-spacing:-1px;margin:0 0 10px}.calibration-message h2 br{display:none}.calibration-message p{font-size:13px;line-height:1.7}.calibration-message p br{display:none}.calibration-bottom-controls{left:20px;right:20px;bottom:15px;width:auto;padding-top:13px}.calibration-bottom-controls .dialog-note{font-size:12px!important;margin:11px 0!important}.calibration-vertical-guides #cardReference{height:100px;padding:15px}.calibration-vertical-guides #cardReference>strong{bottom:14px;right:15px;font-size:16px}.calibration-vertical-guides #cardReference>svg{width:26px;height:21px;margin-bottom:8px}.calibration-vertical-guides>span{font-size:20px;top:10px}#calibrationDialog .dialog-close{right:15px;top:17px;font-size:29px;width:30px;height:30px}.instrument:fullscreen .workspace{min-height:calc(100dvh - 380px)}.instrument:fullscreen .marking-panel>ol{max-height:45px}html[lang=en] .calibration-message h2{font-size:30px}html[lang=en] .calibration-warning strong{font-size:25px}}
@media(max-height:650px) and (min-width:761px){.calibration-message{top:125px}.calibration-message h2{font-size:37px;margin:12px 0}.calibration-message p{font-size:13px}.calibration-bottom-controls{bottom:15px}.calibration-vertical-guides #cardReference{height:120px}}
@media(max-height:700px) and (max-width:760px){.calibration-message{top:120px}.calibration-message h2{font-size:23px}.calibration-message p{font-size:12px}.calibration-guide-surface{top:210px;bottom:195px}.calibration-bottom-controls .dialog-note{margin:7px 0!important}.calibration-vertical-guides #cardReference{height:70px}.calibration-vertical-guides #cardReference>svg{display:none}.calibration-vertical-guides>span{font-size:15px;top:6px}}

.workspace[data-mode=angle] .canvas-hint{bottom:10px}.workspace[data-mode=angle] .canvas-brand{display:none}
.language-menu{position:relative;margin-left:auto;margin-right:18px;font-size:13px;flex-shrink:0;z-index:10}.language-menu>summary{display:flex;align-items:center;gap:14px;padding:8px 11px;border:1px solid #d8dece;border-radius:5px;cursor:pointer;list-style:none;background:var(--bg);color:#667752}.language-menu>summary::-webkit-details-marker{display:none}.language-menu>nav{position:absolute;right:0;top:calc(100% + 7px);min-width:140px;display:flex;flex-direction:column;padding:5px;background:#fff;border:1px solid #dce2d2;border-radius:8px;box-shadow:0 8px 25px #26302016}.language-menu>nav>a{display:block;padding:10px 12px;font-size:15px;border-radius:5px;color:#63774e;white-space:nowrap}.language-menu>nav>a:hover,.language-menu>nav>a[aria-current=page]{background:#f2f4eb;color:var(--accent)}.header-links>.language-menu{margin:0}.language-menu>summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}html[lang=ja],html[lang=zh-Hant]{font-family:-apple-system,BlinkMacSystemFont,'Hiragino Sans','Yu Gothic','PingFang TC','Microsoft JhengHei',sans-serif}html[lang=ja] .brand strong,html[lang=zh-Hant] .brand strong{font-size:24px;letter-spacing:-1px}html[lang=ja] .brand-en,html[lang=zh-Hant] .brand-en{font-size:11px;letter-spacing:0}html[lang=ja] .mode,html[lang=zh-Hant] .mode{font-size:13px}html[lang=ja] .primary-reading>span:first-child,html[lang=zh-Hant] .primary-reading>span:first-child{font-size:50px}html[lang=ja] .calibration-message h2{font-size:37px;letter-spacing:-1px}html[lang=zh-Hant] .calibration-message h2{font-size:44px;letter-spacing:-1px}html[lang=ja] .header-note,html[lang=zh-Hant] .header-note{font-size:13px}.site-header .header-note{pointer-events:none}
@media(max-width:760px){.language-menu{font-size:12px;margin-right:12px}.language-menu>summary{padding:7px 8px;gap:9px}.language-menu>nav{min-width:125px}.header-links>.language-menu{display:block}html[lang=ja] .brand-en,html[lang=zh-Hant] .brand-en{display:none}html[lang=ja] .brand strong,html[lang=zh-Hant] .brand strong{font-size:22px}html[lang=ja] .mode{font-size:11px}html[lang=zh-Hant] .mode{font-size:12px}html[lang=ja] .calibration-message h2,html[lang=zh-Hant] .calibration-message h2{font-size:26px}html[lang=ja] .calibration-warning strong,html[lang=zh-Hant] .calibration-warning strong{font-size:24px}html[lang=ja] .marking-controls button,html[lang=zh-Hant] .marking-controls button{font-size:12px}html[lang=ja] .intro h1,html[lang=zh-Hant] .intro h1{font-size:29px}.calibration-message h2 br{display:block}.calibration-message p{max-width:100%}}
/* Larger calibration reminder and touch target in the measurement panel. */
.precision-box{gap:10px;padding-top:25px}.precision-box>svg{width:19px;margin-top:4px}.precision-box p{font-size:18px;line-height:1.8;color:#748260}.precision-box button{font-size:18px;font-weight:600;line-height:1.8;color:#526a3d;text-align:left;padding:4px 0;min-height:36px}.precision-box button span{font-size:22px;margin-left:5px}.cat-holder{pointer-events:none;user-select:none}
@media(max-width:760px){.precision-box{padding-top:20px;grid-column:1/-1}.precision-box p{display:block;font-size:18px;line-height:1.8}.precision-box p br{display:block}.precision-box button{font-size:18px;min-height:42px}.precision-box>svg{width:19px;margin-top:4px}}

/* Keep the longer Kkurei Tools identity compact beside mobile controls. */
@media(max-width:760px){.site-header .brand-en{display:none}.site-header .brand strong{font-size:22px;white-space:nowrap}.site-header .help-button{white-space:nowrap;flex-shrink:0}}

/* Primary links between the arcade and tools. */
.kk-brand-family{display:flex;align-items:center;gap:25px;flex-shrink:0}.arcade-return{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:25px;font-weight:700;letter-spacing:-1px}.arcade-return img{width:36px;height:36px;image-rendering:pixelated}.arcade-return b{color:#d08a20}.site-header:has(.kk-brand-family){gap:20px;height:auto;min-height:108px;padding-block:22px;flex-wrap:wrap}.site-header:has(.kk-brand-family) .header-note{display:none}.kk-brand-family .brand-en{display:none}.kk-brand-family .brand strong{font-size:25px;white-space:nowrap}.header-links{font-size:14px}.breadcrumb{font-size:13px;flex-wrap:wrap;line-height:1.7}
.wide-only{display:none}.mobile-measure-button{display:none;margin:0 0 22px;font-size:16px;min-height:48px}
@media(max-width:760px){.kk-brand-family{width:100%;gap:12px;justify-content:space-between}.kk-brand-family .arcade-return,.kk-brand-family .brand strong{font-size:18px!important;letter-spacing:-.6px}.arcade-return img{width:28px;height:28px}.kk-brand-family .brand{gap:7px}.kk-brand-family .brand-mark{width:30px;height:30px}.kk-brand-family .brand-mark svg{width:23px}.site-header:has(.kk-brand-family){padding-block:15px;row-gap:12px}.header-links{margin-left:auto}.mobile-measure-button{display:block}.tool-card h3{font-size:16px}.tool-card p{font-size:13px}.info-article p,.article-main p{font-size:15px}.breadcrumb{font-size:12px}}
/* A landscape-sized instrument, including all marking actions, fits in one phone screen. */
body.wide-measure{overflow:hidden}body.wide-measure .instrument{position:fixed;inset:0;z-index:1000;width:100dvw;height:100dvh;border:0;border-radius:0;display:grid;grid-template-rows:48px minmax(0,1fr) auto;box-shadow:none;overscroll-behavior:none}
body.wide-measure .instrument-toolbar{height:48px;padding:0 9px;gap:8px;flex-wrap:nowrap;background:#fff}body.wide-measure .mode-tabs{gap:1px;flex-wrap:nowrap}body.wide-measure .mode{padding:8px 7px;font-size:12px!important;display:block;line-height:1.2}body.wide-measure .mode svg{display:none}body.wide-measure .toolbar-actions{gap:5px;flex-shrink:0}body.wide-measure .toolbar-divider,body.wide-measure #fullscreenButton{display:none}body.wide-measure .unit-switch button{min-width:30px;padding:6px;font-size:11px}body.wide-measure .wide-only{display:inline-flex;align-items:center;justify-content:center}body.wide-measure .wide-close,body.wide-measure .wide-action{min-height:36px;padding:6px 8px;font-size:12px;white-space:nowrap;border-radius:6px;background:#f1f3ec}body.wide-measure .wide-action[data-calibrated=false]{color:#c05432;background:#fff0e6}body.wide-measure .wide-reading{font-size:17px;font-weight:600;white-space:nowrap;color:var(--mode);font-variant-numeric:tabular-nums;margin-right:4px}
body.wide-measure .instrument-body{display:block;min-height:0;position:relative;overflow:hidden}body.wide-measure .workspace{width:100%;height:100%;min-height:0}body.wide-measure .canvas-label{top:57px;font-size:9px}body.wide-measure .canvas-hint,body.wide-measure .canvas-brand,body.wide-measure .instrument-bottom{display:none}body.wide-measure .inspector{display:none}body.wide-measure .inspector.wide-inspector-open{position:absolute;z-index:8;right:8px;top:8px;bottom:8px;width:250px;padding:15px;display:block;border:1px solid #d5dccd;border-radius:10px;overflow:auto;box-shadow:0 8px 30px #26302030}.wide-inspector-open .inspector-top,.wide-inspector-open .inspector-description,.wide-inspector-open #measurementTitle,.wide-inspector-open .precision-box{display:none!important}.wide-inspector-open .primary-reading{margin-top:0}.wide-inspector-open .primary-reading>span:first-child{font-size:30px!important}.wide-inspector-open .measurement-fields{display:block;margin-top:12px}.wide-inspector-open .field-row{margin-bottom:10px}.wide-inspector-open .secondary-readings{display:block;margin:0}
body.wide-measure .marking-panel{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:7px 10px;border-top:1px solid #d9dfd1;min-height:58px;background:#fcfcf8}body.wide-measure .marking-summary{display:block;flex-shrink:0}body.wide-measure .marking-summary>.section-label,body.wide-measure #markingInstruction,body.wide-measure #markingHistory{display:none}body.wide-measure .marking-summary>strong{font-size:21px;display:block;line-height:1.1}body.wide-measure #markingBreakdown{font-size:10px}body.wide-measure .marking-controls{display:flex;flex-wrap:nowrap;gap:6px}body.wide-measure .marking-controls button{min-height:42px;font-size:12px!important;padding:8px 12px;white-space:nowrap}
body.wide-measure #calibrationDialog{width:100dvw;height:100dvh;max-width:none;max-height:none;inset:0;transform:none;transform-origin:top left}body.wide-measure #calibrationDialog .calibration-topbar{left:16px;right:65px;top:12px;max-width:none;padding-bottom:0}body.wide-measure .calibration-topbar input{margin:8px 0 6px}body.wide-measure .calibration-topbar>span{font-size:12px;display:block;line-height:1.3}body.wide-measure .calibration-guide-surface{left:16px;right:16px;top:158px;bottom:0;min-width:0}body.wide-measure .calibration-message{left:16px;right:auto;top:90px;width:220px}body.wide-measure .calibration-message .eyebrow,body.wide-measure .calibration-message p{display:none}body.wide-measure .calibration-message h2{font-size:23px!important;line-height:1.2;margin:0;letter-spacing:-.7px}body.wide-measure .calibration-message h2 br{display:block}body.wide-measure .calibration-bottom-controls{display:flex;align-items:center;gap:8px;top:91px;left:auto;right:16px;bottom:auto;width:calc(100% - 265px);padding:0;border:0}body.wide-measure .calibration-bottom-controls .manual-calibration{display:flex;gap:7px;align-items:center;flex:1;font-size:12px}body.wide-measure .manual-calibration label{font-size:12px;white-space:nowrap}body.wide-measure .manual-calibration label span{display:none}body.wide-measure .calibration-bottom-controls .manual-calibration input{width:80px;font-size:15px;padding:8px}body.wide-measure .calibration-bottom-controls .dialog-note,body.wide-measure #defaultCalibration{display:none}body.wide-measure .calibration-bottom-controls .dialog-actions{margin:0;display:flex}body.wide-measure .calibration-bottom-controls .dialog-actions button{font-size:13px;padding:10px;white-space:nowrap;min-height:40px}body.wide-measure .calibration-error{position:absolute;top:44px;font-size:11px;margin:0}body.wide-measure .calibration-vertical-guides #cardReference{height:110px;padding:14px}body.wide-measure .calibration-vertical-guides #cardReference>svg{display:none}
@media(orientation:portrait){body.wide-measure .instrument,body.wide-measure #calibrationDialog{inset:auto;left:0;top:0;width:100dvh;height:100dvw;transform:translateX(100dvw) rotate(90deg);transform-origin:top left}}
@media(max-height:340px) and (orientation:landscape){body.wide-measure .calibration-guide-surface{top:145px}body.wide-measure .calibration-message,body.wide-measure .calibration-bottom-controls{top:84px}}

/* Keep all translated controls in view, including shorter landscape phones. */
body.wide-measure .instrument{grid-template-rows:auto minmax(0,1fr) auto}body.wide-measure .instrument-toolbar{display:grid;grid-template-columns:auto minmax(0,1fr);grid-template-rows:36px 36px;height:78px;padding:3px 9px;gap:0 8px}body.wide-measure .mode-tabs{justify-content:flex-end}body.wide-measure .toolbar-actions{grid-column:1/-1;justify-content:flex-end}body.wide-measure .wide-reading{margin-right:auto}.measure-handle .cat-holder{pointer-events:auto;cursor:grab}

.compact-mark-label{display:none}body.wide-measure .regular-mark-label{display:none}body.wide-measure .compact-mark-label{display:inline}body.wide-measure .marking-controls button{padding-inline:9px}body.wide-measure .marking-summary{max-width:190px;min-width:105px;flex-shrink:1}