*{box-sizing:border-box}html{font-size:var(--font-scale,100%);scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.62;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}a{color:var(--accent);text-decoration-thickness:.08em;text-underline-offset:.18em}a:hover{text-decoration-thickness:.12em}button{color:inherit}.shell{width:min(calc(100% - 32px),var(--content-width));margin-inline:auto}.site-header{background:color-mix(in srgb,var(--header-bg) 94%,transparent);border-bottom:1px solid var(--border);position:relative;z-index:40}.header-row{min-height:62px;display:flex;align-items:center;gap:26px}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-size:1.08rem;font-weight:800;text-decoration:none;letter-spacing:-.02em;white-space:nowrap}.brand-logo{display:block;width:168px;height:auto;max-height:44px;object-fit:contain}.brand-logo.small{width:128px;max-height:34px}.brand-rule{width:28px;height:16px;border-bottom:2px solid currentColor;background:repeating-linear-gradient(90deg,currentColor 0 1px,transparent 1px 5px);opacity:.88}.main-nav{display:flex;align-items:center;gap:4px;min-width:0;margin-left:auto}.main-nav a{color:var(--muted);font-size:.9rem;font-weight:650;text-decoration:none;padding:8px 10px;border-bottom:2px solid transparent}.main-nav a:hover,.main-nav a[aria-current="page"]{color:var(--text);border-bottom-color:var(--accent)}.header-actions{display:flex;align-items:center;gap:8px}.nav-toggle{display:none;border:0;background:none;padding:8px;font-size:1.25rem}main{padding-bottom:68px}.crumb{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:.82rem;padding-top:18px}.crumb a{color:inherit}.hero{padding:54px 0 34px;max-width:840px}.hero .eyebrow{display:block;color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}.hero h1{font-size:clamp(calc(2rem * var(--heading-scale,1)),5vw,calc(3.6rem * var(--heading-scale,1)));line-height:1.04;letter-spacing:-.045em;margin:0;max-width:18ch}.hero p{font-size:clamp(1rem,1.6vw,1.15rem);color:var(--muted);max-width:68ch;margin:18px 0 0}.error-hero{min-height:48vh}.text-link{font-weight:750}.ruler-workspace{margin:10px 0 46px;padding:22px 0 26px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 4%,transparent),transparent)}.ruler-toolbar{display:flex;justify-content:space-between;gap:16px;align-items:center;flex-wrap:wrap}.seg{display:inline-flex;gap:2px;border-bottom:1px solid var(--border)}.seg button,.tool-actions button,.ruler-help button,.cal-method button,.dialog-card button,.consent button{border:0;background:transparent;padding:9px 12px;cursor:pointer;font-weight:700}.seg button{color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}.seg button.active{color:var(--accent);border-bottom-color:var(--accent)}.tool-actions{display:flex;gap:3px;flex-wrap:wrap}.tool-actions button,.ruler-help button{border:1px solid var(--border);background:var(--surface)}.tool-actions button:hover,.ruler-help button:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--border))}.status-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:16px 0 10px;font-size:.84rem}.status-pill{font-weight:780;color:#9a3412}.status-pill.ok{color:var(--accent2)}.status-pill.warn{color:#b45309}.status-note{color:var(--muted)}.ruler-stage{position:relative;border-radius:calc(var(--radius) * .65);width:100%;height:248px;background:var(--ruler-bg);border:1px solid color-mix(in srgb,var(--ruler-bg) 76%,#0f172a);overflow:hidden;box-shadow:0 12px 30px color-mix(in srgb,var(--ruler-bg) 16%,transparent),inset 0 1px 0 rgba(255,255,255,.18);contain:layout paint}.ruler-stage.vertical{height:440px}.ruler-stage canvas{width:100%;height:100%;display:block;touch-action:none;outline:none}.ruler-stage canvas:focus-visible{box-shadow:inset 0 0 0 3px color-mix(in srgb,var(--accent) 35%,transparent)}.measure-output{position:absolute;right:12px;bottom:10px;background:rgba(6,18,45,.78);color:#fff;border:1px solid rgba(255,255,255,.24);border-radius:9px;font-variant-numeric:tabular-nums;font-weight:800;padding:6px 10px;min-width:88px;text-align:center;box-shadow:0 6px 20px rgba(2,8,23,.18);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}.ruler-help{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-top:12px;color:var(--muted);font-size:.86rem}.ruler-help>div{display:flex;gap:6px}.ruler-help button{padding:6px 10px;color:var(--text)}.article-flow{max-width:840px;margin:0 auto;padding:8px 0 28px;font-size:calc(1rem * var(--body-scale,1))}.article-flow h2{font-size:1.5rem;line-height:1.2;letter-spacing:-.025em;margin:38px 0 10px;padding-top:28px;border-top:1px solid var(--border)}.article-flow h2:first-child{border-top:0;padding-top:0;margin-top:0}.article-flow h3{font-size:1.1rem;margin:28px 0 8px}.article-flow p{margin:0 0 16px;color:color-mix(in srgb,var(--text) 88%,var(--muted))}.article-flow ul,.article-flow ol{padding-left:1.3rem}.article-flow li{margin:6px 0}.article-flow code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.92em}.faq{max-width:840px;margin:22px auto 0;padding:40px 0 10px;border-top:1px solid var(--border)}.faq h2{font-size:1.55rem;letter-spacing:-.025em;margin:0 0 14px}.faq-list{border-top:1px solid var(--border)}.faq details{border-bottom:1px solid var(--border)}.faq summary{cursor:pointer;font-weight:760;padding:16px 0;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:"+";float:right;color:var(--accent);font-size:1.2rem}.faq details[open] summary::after{content:"−"}.faq details p{color:var(--muted);margin:-2px 0 18px;max-width:70ch}.calibration-grid{display:grid;grid-template-columns:1fr 1fr;margin:8px 0 48px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.cal-method{padding:30px 34px 30px 0}.cal-method+ .cal-method{padding-left:34px;padding-right:0;border-left:1px solid var(--border)}.cal-method h2{margin:0 0 8px;font-size:1.28rem}.cal-method p{color:var(--muted)}.cal-method label{display:block;margin:16px 0;font-weight:650}.cal-method input[type="number"]{width:100%;border:1px solid var(--border);background:var(--surface);padding:10px}.cal-method input[type="range"]{width:100%;margin-top:10px}.cal-method .primary,.dialog-card .primary,.consent .primary{background:var(--accent);color:#fff}.card-guide{height:54px;border:1px dashed var(--accent);display:grid;place-items:center;background:color-mix(in srgb,var(--accent) 5%,var(--surface));max-width:100%;min-width:120px;overflow:hidden}.card-guide.large{height:70px}.card-guide span{font-size:.78rem;font-weight:800;color:var(--accent);white-space:nowrap}.small{font-size:.82rem;color:var(--muted)}.cal-dialog{border:0;padding:0;background:transparent;max-width:min(600px,calc(100vw - 24px));width:100%}.cal-dialog::backdrop{background:rgba(15,23,42,.55)}.dialog-card{border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--border);box-shadow:0 24px 70px rgba(15,23,42,.25);padding:0}.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}.dialog-head>div{display:flex;flex-direction:column}.dialog-head small{color:var(--muted)}.dialog-head button{font-size:1.4rem;padding:4px 8px}.cal-tabs{display:flex;border-bottom:1px solid var(--border);padding:0 18px}.cal-tabs button{color:var(--muted);border-bottom:2px solid transparent}.cal-tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}.dialog-card section{padding:20px}.dialog-card section p{color:var(--muted);margin-top:0}.dialog-card label{display:block;margin:16px 0;font-weight:650}.dialog-card input[type="range"]{width:100%;margin-top:8px}.dialog-card input[type="number"]{width:100%;border:1px solid var(--border);padding:10px}.dialog-foot{padding:12px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end}.ad-slot{min-height:90px;margin:28px 0;border-block:1px solid var(--border);display:grid;place-items:center;color:var(--muted);font-size:.72rem}.site-footer{border-top:1px solid var(--border);background:var(--surface)}.consent{border-radius:calc(var(--radius) * .7);position:fixed;z-index:80;left:50%;bottom:16px;transform:translateX(-50%);width:min(720px,calc(100% - 24px));background:#111827;color:#fff;border:1px solid #334155;padding:14px 16px;box-shadow:0 18px 50px rgba(0,0,0,.28);display:flex;align-items:center;justify-content:space-between;gap:18px}.consent[hidden]{display:none}.consent p{margin:0;font-size:.85rem}.consent>div{display:flex;gap:8px;white-space:nowrap}.consent button{border:1px solid #475569;color:#fff}.toast{position:fixed;z-index:90;left:50%;bottom:24px;transform:translateX(-50%);padding:8px 12px;background:#111827;color:#fff;font-size:.8rem;font-weight:750;box-shadow:0 8px 30px rgba(0,0,0,.2)}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 38%,transparent);outline-offset:2px}@media (max-width:920px){.header-actions{margin-left:auto}.nav-toggle{display:block}.main-nav{display:none;position:absolute;margin-left:0;left:16px;right:16px;top:62px;background:var(--surface);border:1px solid var(--border);padding:8px;box-shadow:0 14px 40px rgba(17,24,39,.12);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:10px;border-bottom:0;border-left:2px solid transparent}.main-nav a[aria-current="page"]{border-left-color:var(--accent)}.header-row{gap:12px}.header-actions{gap:2px}.hero{padding-top:38px}}@media (max-width:680px){.shell{width:min(calc(100% - 22px),var(--content-width))}.header-row{min-height:58px}.brand{font-size:1rem}.brand-rule{width:23px}.hero{padding:34px 0 26px}.hero h1{font-size:2.25rem}.ruler-workspace{margin-top:0;padding-top:16px}.ruler-toolbar{align-items:flex-start}.tool-actions{width:100%}.tool-actions button{flex:1 1 auto;font-size:.82rem;padding:8px}.ruler-stage{height:220px}.ruler-stage.vertical{height:500px}.ruler-help{align-items:flex-start;flex-direction:column}.calibration-grid{grid-template-columns:1fr}.cal-method{padding:24px 0}.cal-method+ .cal-method{padding:24px 0;border-left:0;border-top:1px solid var(--border)}.article-flow,.faq{max-width:none}.consent{flex-direction:column;align-items:stretch}.consent>div{white-space:normal;display:grid;grid-template-columns:1fr 1fr}.consent button{padding:9px 8px}.dialog-card section{padding:16px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}@media print{.site-header,.ruler-toolbar,.status-row,.ruler-help,.site-footer,.consent,.ad-slot{display:none!important}body{background:#fff}.shell{width:100%;max-width:none}.ruler-workspace{border:0;margin:0}.ruler-stage{border:1px solid #000}.article-flow,.faq{display:none}}.owner-profile{display:flex;align-items:center;gap:18px;margin:8px 0 34px;padding:18px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.owner-profile img{width:96px;height:96px;object-fit:cover;border:1px solid var(--border);border-radius:14px;background:var(--surface)}.owner-profile figcaption{display:grid;gap:4px;margin:0}.owner-profile figcaption strong{font-size:1.08rem}.owner-profile figcaption span{color:var(--muted);font-size:.94rem}@media (max-width:520px){.owner-profile{gap:14px}.owner-profile img{width:78px;height:78px;border-radius:12px}}@media (max-width:680px){.brand-logo{width:132px}.header-row{min-height:56px}.main-nav.open{display:grid}.tool-actions button{min-height:42px}.seg button{min-height:42px}}.footer-center{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:18px;padding-block:30px 34px}.footer-language{position:relative}.footer-language summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:9px;border:1px solid var(--border);background:var(--surface);border-radius:12px;padding:10px 14px;color:var(--muted);font-weight:700;min-width:150px;justify-content:center}.footer-language summary::-webkit-details-marker{display:none}.footer-language .chevron{font-size:.9em}.footer-language-menu{position:absolute;z-index:60;left:50%;bottom:calc(100% + 8px);transform:translateX(-50%);min-width:180px;padding:6px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 14px 40px rgba(17,24,39,.14);text-align:left}.footer-language-menu a{display:block;padding:9px 10px;border-radius:8px;color:var(--text);text-decoration:none;font-size:.9rem}.footer-language-menu a:hover,.footer-language-menu a[aria-current="true"]{background:var(--bg);color:var(--accent)}.footer-legal{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px 18px}.footer-legal a{font-size:.88rem;font-weight:650;text-decoration:none}.footer-copy{margin:0;color:var(--muted);font-size:.86rem}.popup-only{margin:0;overflow:hidden;background:var(--ruler-bg)}.popup-only .popup-ruler-shell{width:100vw;height:100vh;padding:0;margin:0}.popup-only .popup-ruler{width:100%;height:100%;margin:0;padding:0}.popup-only .popup-ruler-stage{width:100%;height:100vh!important;min-height:100vh;border:0;border-radius:0;box-shadow:none}.popup-only .measure-output{right:10px;bottom:10px}.popup-only .ruler-stage.vertical{height:100vh!important}@media (max-width:680px){.footer-center{padding-block:26px 30px}.footer-legal{gap:8px 14px}.footer-language summary{min-width:142px}.popup-only .measure-output{font-size:.82rem}}.hero-brand,.hero-kicker,.hero>[data-hero-brand],.hero>.eyebrow:not(.error-code){display:none!important}body,.ruler-workspace{background:#fff}.ruler-workspace{background-image:none}.ruler-stage{height:178px;border-color:color-mix(in srgb,var(--ruler-bg) 72%,#6b492c);border-radius:12px;box-shadow:0 8px 24px rgba(74,51,29,.10),inset 0 1px 0 rgba(255,255,255,.38)}.ruler-stage.vertical{width:90px;max-width:90px;height:min(72vh,700px);min-height:420px;margin:0;border-radius:10px}.ruler-stage.vertical .measure-output{left:7px;right:7px;bottom:8px;min-width:0;padding:5px 4px;font-size:.72rem}.measure-output{background:rgba(55,38,22,.86);border-color:rgba(255,255,255,.35)}.faq-list details{background:#fff}.faq summary{font-size:1rem}.faq details p{font-size:.96rem;line-height:1.7}.article-flow p,.article-flow li{max-width:76ch}.article-flow ul,.article-flow ol{margin-block:10px 22px}.article-flow h3{line-height:1.3}.popup-only{background:var(--ruler-bg)}.popup-only .ruler-stage.vertical{width:100%!important;max-width:none!important;height:100vh!important;min-height:100vh!important}.popup-only .ruler-stage.vertical .measure-output{left:6px;right:6px}.faq{display:block;visibility:visible}@media (max-width:680px){.ruler-stage{height:164px}.ruler-stage.vertical{width:76px;max-width:76px;height:min(68vh,600px);min-height:360px}.ruler-toolbar{gap:10px}.tool-actions{gap:4px}.tool-actions button{padding:8px 9px}.article-flow{font-size:calc(.98rem * var(--body-scale,1))}.faq{padding-top:32px}}@media print{.faq{display:none!important}}.advanced-tools{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 2px;padding:10px;border:1px solid var(--border);border-radius:12px;background:color-mix(in srgb,var(--surface) 94%,var(--bg))}.advanced-tools button{font-size:.78rem;padding:7px 9px;border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:9px;white-space:nowrap}.advanced-tools button:hover,.advanced-tools button.active,.advanced-tools button[aria-pressed="true"]{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 42%,var(--border));background:color-mix(in srgb,var(--accent) 7%,var(--surface))}.device-profile-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:7px 0 10px;padding:8px 10px;border:1px dashed var(--border);border-radius:10px;color:var(--muted);font-size:.78rem;line-height:1.4}.device-profile-row span{min-width:0}.device-profile-row button{flex:0 0 auto;padding:6px 9px;border:1px solid var(--border);border-radius:8px;background:var(--surface);font-size:.76rem;font-weight:700}.shortcut-help{margin-top:8px;color:var(--muted);font-size:.78rem}.shortcut-help summary{cursor:pointer;font-weight:700;display:inline-flex;gap:6px;align-items:center}.shortcut-help p{margin:7px 0 0;line-height:1.55}.device-dialog-result{padding:10px 12px;border:1px dashed var(--border);border-radius:10px;background:var(--bg);font-size:.86rem;line-height:1.5}.ruler-stage canvas{cursor:crosshair;touch-action:none}.ruler-workspace:fullscreen{width:100%;height:100%;overflow:auto;padding:18px;background:var(--surface)}.ruler-workspace:fullscreen .ruler-stage{height:min(62vh,620px)}html[data-theme="dark"]{--bg:#0b1220;--surface:#111827;--header-bg:#111827;--text:#f3f4f6;--muted:#aeb8c7;--border:#334155;--accent:#60a5fa;--accent2:#2dd4bf;color-scheme:dark}html[data-theme="dark"] body,html[data-theme="dark"] .ruler-workspace{background:#0b1220;color:var(--text)}html[data-theme="dark"] .site-header,html[data-theme="dark"] .site-footer,html[data-theme="dark"] .faq-list details,html[data-theme="dark"] .dialog-card,html[data-theme="dark"] .main-nav{background:var(--surface)}html[data-theme="dark"] .advanced-tools{background:#0f172a}html[data-theme="dark"] .advanced-tools button,html[data-theme="dark"] .device-profile-row button,html[data-theme="dark"] .footer-language summary,html[data-theme="dark"] .footer-language-menu{background:#111827;color:var(--text)}html[data-theme="dark"] .device-dialog-result{background:#0b1220}html[data-theme="dark"] .article-flow,html[data-theme="dark"] .faq,html[data-theme="dark"] .crumb{color:var(--text)}html[data-theme="dark"] .measure-output{background:rgba(15,23,42,.9)}@media (max-width:680px){.advanced-tools{gap:5px;padding:8px}.advanced-tools button{flex:1 1 calc(33.333% - 5px);min-height:38px;padding:7px 6px}.device-profile-row{align-items:flex-start;flex-direction:column}.device-profile-row button{width:100%}.shortcut-help p{font-size:.74rem}.ruler-workspace:fullscreen{padding:8px}.ruler-workspace:fullscreen .ruler-stage{height:min(72vh,680px)}}@media print{.advanced-tools,.device-profile-row,.shortcut-help{display:none!important}}.measure-converter{margin-top:12px;padding:13px 14px;border:1px solid var(--border);border-radius:12px;background:color-mix(in srgb,var(--surface) 96%,var(--bg));display:grid;gap:10px}.measure-converter[hidden]{display:none!important}.measure-converter-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px}.measure-converter-head strong{font-size:.94rem}.measure-converter-head small{color:var(--muted);font-size:.74rem;text-align:right}.measure-convert-values{display:flex;flex-wrap:wrap;gap:7px}.measure-convert-values span{padding:6px 9px;border:1px solid var(--border);border-radius:999px;background:var(--surface);font-variant-numeric:tabular-nums;font-size:.82rem;font-weight:750}.measure-convert-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.measure-convert-actions button,.measure-convert-actions a{display:inline-flex;align-items:center;justify-content:center;min-height:34px;padding:7px 10px;border:1px solid var(--border);border-radius:9px;background:var(--surface);font-size:.78rem;font-weight:750;text-decoration:none;color:var(--text)}.measure-convert-actions a{color:var(--accent)}.converter-workspace{max-width:980px;margin:0 auto 32px;padding:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:0 12px 34px rgba(17,24,39,.06)}.converter-main{display:grid;grid-template-columns:minmax(220px,1.35fr) minmax(165px,1fr) 54px minmax(165px,1fr);grid-template-areas:"value from swap to";gap:10px;align-items:end}.converter-main label,.converter-options label{display:grid;gap:6px;color:var(--muted);font-size:.78rem;font-weight:750}.converter-main label span,.converter-options label>span{line-height:1.2}.converter-value{grid-area:value}.converter-main>label:nth-of-type(2){grid-area:from}.converter-main>label:nth-of-type(3){grid-area:to}.converter-main input,.converter-main select,.converter-options select{width:100%;height:48px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);padding:0 12px;font:inherit;font-size:1rem}.converter-value input{font-size:1.18rem;font-weight:760;font-variant-numeric:tabular-nums}.converter-swap{grid-area:swap;height:48px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--accent);font-size:1.25rem;font-weight:800}.converter-swap:hover,.converter-theme:hover,.converter-result-card button:hover,.converter-all-head button:hover{border-color:color-mix(in srgb,var(--accent) 48%,var(--border));color:var(--accent)}.converter-result-card{margin-top:12px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px;border:1px solid color-mix(in srgb,var(--accent) 24%,var(--border));border-radius:12px;background:color-mix(in srgb,var(--accent) 5%,var(--surface))}.converter-result-card>div{display:grid;gap:5px;min-width:0}.converter-result-card span{color:var(--muted);font-size:.78rem;font-weight:750}.converter-result-card output{font-size:clamp(1.45rem,4vw,2.25rem);font-weight:850;line-height:1.05;letter-spacing:-.025em;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.converter-result-card output.invalid{font-size:1rem;color:#b91c1c;letter-spacing:0}.converter-result-card button,.converter-all-head button,.converter-theme{min-height:38px;padding:8px 11px;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);font-size:.8rem;font-weight:760;white-space:nowrap}.converter-options{display:flex;align-items:end;gap:14px;flex-wrap:wrap;margin-top:12px;padding:12px 0;border-bottom:1px solid var(--border)}.converter-options>label:first-child{min-width:160px}.converter-options select{height:40px}.converter-check{display:flex!important;grid-template-columns:auto 1fr;align-items:center;gap:8px!important;min-height:40px;padding:0 2px;color:var(--text)!important}.converter-check input{width:18px;height:18px;accent-color:var(--accent)}.converter-theme{margin-left:auto;height:40px}.converter-all{padding-top:14px}.converter-all-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.converter-all-head strong{font-size:.94rem}.converter-chips{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.converter-chip{min-width:0;padding:10px;border:1px solid var(--border);border-radius:10px;background:var(--bg);display:grid;gap:4px}.converter-chip span{color:var(--muted);font-size:.7rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.converter-chip output{font-size:.9rem;font-weight:780;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.converter-shortcuts{margin:12px 0 0;color:var(--muted);font-size:.76rem}.converter-workspace button,.converter-workspace select,.converter-workspace input{touch-action:manipulation}html[data-theme="dark"] .converter-workspace{box-shadow:none}html[data-theme="dark"] .converter-result-card output.invalid{color:#fca5a5}@media (max-width:780px){.converter-main{grid-template-columns:minmax(0,1fr) 48px minmax(0,1fr);grid-template-areas:"value value value" "from swap to"}.converter-chips{grid-template-columns:repeat(2,minmax(0,1fr))}.converter-workspace{padding:15px}.measure-converter-head{align-items:flex-start;flex-direction:column;gap:4px}.measure-converter-head small{text-align:left}}@media (max-width:520px){.converter-workspace{padding:12px;margin-bottom:24px}.converter-main{grid-template-columns:minmax(0,1fr) 44px minmax(0,1fr);gap:7px}.converter-main input,.converter-main select,.converter-swap{height:46px}.converter-main select{font-size:.88rem;padding:0 7px}.converter-result-card{align-items:stretch;flex-direction:column;padding:14px}.converter-result-card button{width:100%}.converter-options{align-items:stretch;display:grid;grid-template-columns:1fr}.converter-options>label:first-child{min-width:0}.converter-theme{margin-left:0;width:100%}.converter-chips{grid-template-columns:1fr 1fr}.measure-convert-actions>*{flex:1 1 auto}.measure-convert-values span{font-size:.76rem}}@media print{.measure-converter,.converter-options,.converter-shortcuts,.converter-result-card button,.converter-all-head button{display:none!important}}


/* 404 page */
.r404{min-height:100vh;display:grid;place-items:center;align-content:center;gap:18px;padding:clamp(28px,5vw,72px) 18px;background:linear-gradient(180deg,var(--bg),color-mix(in srgb,var(--accent) 4%,var(--bg)))}
.r404-card{width:min(900px,100%);overflow:hidden;border:1px solid var(--border);border-radius:calc(var(--radius) + 6px);background:var(--surface);box-shadow:0 22px 70px rgba(17,24,39,.10)}
.r404-visual{display:grid;place-items:center;padding:clamp(28px,5vw,54px) 20px 22px;background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 7%,var(--surface)),var(--surface))}
.r404-ring{width:clamp(132px,22vw,188px);aspect-ratio:1;border:2px solid color-mix(in srgb,var(--accent) 60%,var(--border));border-radius:50%;display:grid;place-items:center;position:relative;box-shadow:inset 0 0 0 10px color-mix(in srgb,var(--accent) 5%,transparent)}
.r404-ring::before,.r404-ring::after{content:"";position:absolute;border-radius:50%;border:1px solid color-mix(in srgb,var(--accent) 20%,var(--border))}
.r404-ring::before{inset:10px}.r404-ring::after{inset:22px}
.r404-ring span{font-size:clamp(38px,7vw,58px);font-weight:800;letter-spacing:-.055em;color:var(--text);z-index:1}
.r404-line{width:min(360px,72vw);height:34px;display:flex;align-items:flex-end;justify-content:space-between;border-bottom:2px solid color-mix(in srgb,var(--accent) 55%,var(--border));margin-top:18px;padding:0 10px}
.r404-line i{display:block;width:2px;background:color-mix(in srgb,var(--accent) 55%,var(--border));height:13px}.r404-line i:nth-child(2n){height:22px}.r404-line i:nth-child(4){height:30px}
.r404-copy{text-align:center;padding:8px clamp(22px,5vw,58px) 30px}
.r404-kicker{display:inline-block;margin-bottom:10px;color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.18em}
.r404-copy h1{margin:0 auto 12px;max-width:680px;font-size:clamp(1.65rem,4vw,2.5rem);line-height:1.12;color:var(--text)}
.r404-copy p{margin:0 auto;max-width:650px;color:var(--muted);line-height:1.7}
.r404-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px}
.r404-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid var(--accent);border-radius:12px;background:var(--accent);color:#fff;text-decoration:none;font-weight:750;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}
.r404-btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px color-mix(in srgb,var(--accent) 20%,transparent)}
.r404-btn-light{background:var(--surface);color:var(--accent)}
.r404-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--border)}
.r404-links a{padding:17px 12px;text-align:center;text-decoration:none;color:var(--text);font-weight:650;border-right:1px solid var(--border);background:color-mix(in srgb,var(--accent) 2%,var(--surface))}
.r404-links a:last-child{border-right:0}.r404-links a:hover{color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--surface))}
.r404-foot{margin:0;color:var(--muted);font-size:.88rem}
@media(max-width:700px){.r404{padding:22px 14px}.r404-links{grid-template-columns:1fr 1fr}.r404-links a:nth-child(2){border-right:0}.r404-links a:nth-child(-n+2){border-bottom:1px solid var(--border)}}
@media(max-width:430px){.r404-actions{display:grid}.r404-btn{width:100%}.r404-copy{padding-inline:18px}.r404-links{grid-template-columns:1fr}.r404-links a{border-right:0;border-bottom:1px solid var(--border)}.r404-links a:last-child{border-bottom:0}}