/* Conversion — stylesheet. Self-hosted fonts, light and dark themes. */

@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-sans-latin-400-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-sans-latin-500-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/ibm-plex-sans-latin-600-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-sans-latin-ext-400-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-sans-latin-ext-500-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/ibm-plex-sans-latin-ext-600-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-mono-latin-500-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-mono-latin-ext-400-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-mono-latin-ext-500-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{
  color-scheme:light;
  --bg:#f4f6fa;--surface:#ffffff;--surface-2:#eef2f7;--line:#d7dde7;--line-soft:#e7ebf1;
  --ink:#0f1620;--ink-2:#455061;--ink-3:#606b79;
  --accent:#1877f2;--accent-text:#0b5ed7;--btn:#0f63d6;--accent-ink:#ffffff;--accent-soft:#e8f0fe;
  --grid:rgba(24,119,242,.10);
  --shadow-sm:0 1px 2px rgba(15,22,32,.04);
  --shadow-card:0 1px 2px rgba(15,22,32,.04),0 16px 40px -32px rgba(15,22,32,.35);
  --sans:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
}
html[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0e1218;--surface:#151a21;--surface-2:#1b222b;--line:#2b333e;--line-soft:#222a34;
  --ink:#e8edf3;--ink-2:#aab4c1;--ink-3:#8b96a4;
  --accent:#4d9bff;--accent-text:#74b3ff;--btn:#4d9bff;--accent-ink:#06101e;--accent-soft:#142a4a;
  --grid:rgba(109,168,255,.07);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow-card:0 1px 2px rgba(0,0,0,.4),0 16px 40px -32px rgba(0,0,0,.9);
}

*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-text-size-adjust:100%;font-feature-settings:"tnum"}
body{font-size:16px;line-height:1.55;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent-text);text-decoration:none}
a:hover{text-decoration:underline}
input,button,select{font:inherit;color:inherit}
input::placeholder{color:var(--ink-3);opacity:1}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
summary{list-style:none}
summary::-webkit-details-marker{display:none}
img{max-width:100%}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
main{flex:1}
.mono{font-family:var(--mono)}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}

/* ---------- header ---------- */

.site-head{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--line)}
.site-head .wrap{min-height:60px;display:flex;align-items:center;gap:12px}
.brand{display:inline-flex;align-items:center;text-decoration:none;flex:none}
.logo{display:block;height:30px;width:auto}
.logo-dark{display:none}
html[data-theme="dark"] .logo-light{display:none}
html[data-theme="dark"] .logo-dark{display:block}
.head-nav{margin-inline-start:auto;display:flex;align-items:center;gap:4px}
.head-nav a{color:var(--ink-2);font-size:14px;font-weight:500;padding:8px 12px;border-radius:8px}
.head-nav a:hover{background:var(--surface-2);color:var(--ink);text-decoration:none}
.head-nav a[aria-current="page"]{color:var(--ink)}
.icon-btn{width:36px;height:36px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink-2);cursor:pointer;display:inline-grid;place-items:center;padding:0}
.icon-btn:hover{border-color:var(--accent);color:var(--accent-text)}
.icon-btn svg{display:block}
html[data-theme="dark"] .icon-sun{display:none}
html:not([data-theme="dark"]) .icon-moon{display:none}

.lang{position:relative}
.lang-btn{height:36px;padding:0 10px;display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink-2);font-size:13px;font-weight:500;cursor:pointer}
.lang-btn:hover{border-color:var(--accent);color:var(--accent-text)}
.lang-btn svg{display:block;flex:none}
.lang-menu{position:absolute;inset-inline-end:0;top:calc(100% + 6px);min-width:190px;padding:6px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-card);display:none;z-index:30;max-height:70vh;overflow:auto}
.lang-menu[data-open="1"]{display:block}
.lang-menu a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:7px 10px;border-radius:7px;color:var(--ink-2);font-size:14px}
.lang-menu a:hover{background:var(--surface-2);color:var(--ink);text-decoration:none}
.lang-menu a[aria-current="true"]{color:var(--ink);font-weight:500}
.lang-menu .code{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}

/* ---------- hero ---------- */

.hero{position:relative;border-bottom:1px solid var(--line);background-color:var(--surface);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:28px 28px;background-position:center top}
.hero-in{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:56px 24px 44px;display:flex;flex-wrap:wrap;gap:36px 56px;align-items:flex-start}
.hero-main{flex:1 1 460px;min-width:0}
.hero h1{margin:0 0 14px;font-size:clamp(30px,2.2vw + 18px,44px);line-height:1.1;letter-spacing:-.025em;font-weight:600;text-wrap:balance;max-width:20ch}
.hero h1 span{color:var(--accent-text)}
.hero p{margin:0 0 26px;max-width:58ch;font-size:17px;line-height:1.6;color:var(--ink-2);text-wrap:pretty}

.search{position:relative;max-width:560px}
.search .glass{position:absolute;inset-inline-start:16px;top:50%;transform:translateY(-50%);color:var(--ink-3);pointer-events:none}
.search input{width:100%;height:52px;padding:0 100px 0 46px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);font-family:var(--mono);font-size:15px;box-shadow:var(--shadow-sm)}
[dir="rtl"] .search input{padding:0 46px 0 100px}
.search-tools{position:absolute;inset-inline-end:10px;top:50%;transform:translateY(-50%);display:flex;align-items:center;gap:8px}
.search-clear{height:28px;padding:0 10px;border:0;border-radius:6px;background:var(--surface-2);color:var(--ink-2);font-size:12px;font-weight:500;cursor:pointer}
.search-clear:hover{color:var(--ink)}
kbd{font-family:var(--mono);font-size:11px;line-height:1;color:var(--ink-3);border:1px solid var(--line);border-radius:5px;padding:5px 7px;background:var(--surface-2)}

.hero-card{flex:0 1 380px;min-width:min(100%,280px);background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 20px;box-shadow:var(--shadow-sm)}
.hero-card .eyebrow{margin-bottom:6px}
.hero-rows{display:grid;grid-template-columns:auto auto minmax(0,1fr);column-gap:14px;font-family:var(--mono);font-size:15px;line-height:1.3}
.hero-rows span{padding:9px 0}
.hero-rows .a{text-align:end;color:var(--ink-2)}
.hero-rows .eq{color:var(--ink-3)}
.hero-rows .b{color:var(--ink);font-weight:500}
.hero-rows .rule{border-top:1px solid var(--line-soft)}
.hero-card p{margin:10px 0 0;font-size:13px;line-height:1.5;color:var(--ink-3)}

/* ---------- sections ---------- */

.sec{max-width:1120px;margin:0 auto;padding:40px 24px 0}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:8px}
h2{margin:0 0 16px;font-size:22px;font-weight:600;letter-spacing:-.01em}
.sec-head h2{margin:0}
h3{margin:0 0 6px;font-size:16px;font-weight:600}
.prose p{margin:0 0 14px;max-width:66ch;font-size:15px;line-height:1.65;color:var(--ink-2);text-wrap:pretty}
.prose p:last-child{margin-bottom:0}
.lead{margin:0;max-width:66ch;font-size:17px;line-height:1.6;color:var(--ink-2);text-wrap:pretty}
.sec-note{margin:0 0 18px;max-width:68ch;font-size:15px;line-height:1.6;color:var(--ink-2);text-wrap:pretty}

.group{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:flex-start;padding-top:18px;border-top:1px solid var(--line)}
.group-label{flex:0 0 150px;padding-top:8px;font-family:var(--mono);font-size:11px;line-height:1.5;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.tiles{flex:1 1 420px;min-width:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.tile{display:flex;flex-direction:column;gap:3px;padding:14px 16px 12px;background:var(--surface);border:1px solid var(--line);border-radius:10px;color:var(--ink);text-decoration:none;transition:transform .15s ease,border-color .15s ease}
.tile:hover{border-color:var(--accent);transform:translateY(-1px);text-decoration:none}
.tile-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.tile-name{font-weight:600;font-size:15px;line-height:1.3}
.tag-new{font-family:var(--mono);font-size:10px;line-height:1;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-text);background:var(--accent-soft);border-radius:4px;padding:4px 6px}
.tile-sub{font-size:13px;color:var(--ink-2);line-height:1.4}
.tile-eg{margin-top:8px;padding-top:8px;border-top:1px solid var(--line-soft);font-family:var(--mono);font-size:12px;line-height:1.4;color:var(--ink-3)}
.no-hits{margin:18px 0 0;font-size:15px;color:var(--ink-2)}
.no-hits strong{font-family:var(--mono);font-weight:500;color:var(--ink)}

/* ---------- converter card ---------- */

.crumbs{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--ink-3)}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--ink)}
.crumbs span{color:var(--ink)}
h1{margin:0 0 12px;font-size:clamp(26px,1.6vw + 16px,36px);line-height:1.15;letter-spacing:-.02em;font-weight:600;max-width:24ch;text-wrap:balance}

.card{margin-top:28px;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-card);overflow:hidden}
.card-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;padding:14px 18px;border-bottom:1px solid var(--line)}
.card-title{font-weight:600;font-size:15px}
.card-tools{margin-inline-start:auto;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.card-tools .eyebrow{margin-inline-end:2px;letter-spacing:.1em}
.seg{display:inline-flex;padding:2px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2)}
.seg button{min-width:34px;height:28px;padding:0 8px;border:0;border-radius:6px;background:transparent;color:var(--ink-3);font-family:var(--mono);font-size:13px;font-weight:500;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}
.btn{height:34px;padding:0 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink-2);font-size:13px;font-weight:500;cursor:pointer}
.btn:hover{border-color:var(--accent);color:var(--accent-text)}
.btn-primary{padding:0 14px;border-color:var(--btn);background:var(--btn);color:var(--accent-ink);font-weight:600}
.btn-primary:hover{filter:brightness(1.08);border-color:var(--btn);color:var(--accent-ink)}

.card-cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.3fr);gap:12px;padding:9px 18px;background:var(--surface-2);border-bottom:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.card-cols .r{text-align:end}
.rows{padding:2px 18px 4px}
.row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.3fr);gap:12px;align-items:center;min-height:52px;border-bottom:1px solid var(--line-soft)}
.row:last-child{border-bottom:0}
.row label{display:flex;flex-direction:column;min-width:0;cursor:text}
.row .n{font-size:14px;font-weight:500;line-height:1.3;color:var(--ink)}
.row .u{font-family:var(--mono);font-size:12px;line-height:1.3;color:var(--ink-3)}
.row input{width:100%;min-width:0;height:38px;padding:0 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font-family:var(--mono);font-size:15px;text-align:end}
.row input:focus{border-color:var(--accent);background:var(--surface)}

.out{display:flex;align-items:baseline;justify-content:flex-end;gap:10px;min-width:0;min-height:38px;padding:8px 10px;border:1px solid transparent;border-radius:8px;cursor:pointer;transition:background .12s ease}
.out:hover{background:var(--accent-soft);border-color:var(--line-soft)}
.out.copied{background:var(--accent-soft);border-color:var(--accent)}
.out .tag{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-text);margin-inline-end:auto}
.out .ov{font-family:var(--mono);font-size:16px;font-weight:500;line-height:1.25;color:var(--ink);text-align:end;overflow-wrap:anywhere}
.out .ou{font-family:var(--mono);font-size:12px;color:var(--ink-3);flex:none;min-width:30px}

.card-foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 16px;padding:12px 18px 6px;font-size:13px;line-height:1.5;color:var(--ink-3)}
.card-foot .kbd-hint{font-family:var(--mono);font-size:12px}
.chips{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 18px 16px}
.chip{height:30px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink-2);font-family:var(--mono);font-size:13px;cursor:pointer}
.chip:hover{border-color:var(--accent);color:var(--accent-text)}
.chip[aria-pressed="true"]{border-color:var(--accent);color:var(--accent-text);background:var(--accent-soft)}
.src-pick{display:flex;flex-wrap:wrap;gap:8px;padding:14px 18px 2px}

/* ---------- content blocks ---------- */

.sec-pad{padding-top:52px}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:20px 32px}
.steps li{display:flex;gap:14px;align-items:flex-start}
.steps .num{flex:none;width:28px;height:28px;display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:var(--surface);font-family:var(--mono);font-size:13px;color:var(--accent-text)}
.steps p{margin:2px 0 0;font-size:15px;line-height:1.6;color:var(--ink-2);text-wrap:pretty}

.fact-box{border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}
.facts{list-style:none;margin:0;padding:0;font-family:var(--mono);font-size:14px;line-height:1.7;color:var(--ink)}
.facts li{padding:11px 18px;border-bottom:1px solid var(--line-soft)}
.facts li:last-child{border-bottom:0}
.formula{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;padding:14px 18px;background:var(--accent-soft);border-top:1px solid var(--line-soft)}
.formula-label{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-text);font-weight:600}
.formula code{font-family:var(--mono);font-size:14px;line-height:1.7;color:var(--ink);overflow-wrap:anywhere}

.tbl-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
table.data{width:100%;min-width:520px;border-collapse:collapse;font-size:14px}
table.data th{text-align:start;padding:10px 18px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;font-weight:500;color:var(--ink-3);background:var(--surface-2);border-bottom:1px solid var(--line)}
table.data th+th{text-align:end}
table.data td{padding:9px 18px;border-bottom:1px solid var(--line-soft);font-weight:500}
table.data td+td{font-family:var(--mono);text-align:end;color:var(--ink-2);font-weight:400}
table.data tr:last-child td{border-bottom:0}
.tbl-narrow{max-width:640px}
.tbl-narrow table.data{min-width:360px}

.two-col{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:32px 48px;align-items:start}
.notes{list-style:none;margin:0;padding:0;font-size:14px;line-height:1.6;color:var(--ink-2)}
.notes li{padding:10px 0;border-top:1px solid var(--line)}
.notes li:last-child{border-bottom:1px solid var(--line)}
.notes .mono{font-family:var(--mono);color:var(--ink)}

.faq{max-width:760px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;cursor:pointer;font-weight:500;font-size:16px}
.faq summary svg{flex:none;color:var(--ink-3);transition:transform .25s ease}
.faq details[open] summary svg{transform:rotate(45deg)}
.faq p{margin:0 0 18px;max-width:64ch;font-size:15px;line-height:1.65;color:var(--ink-2)}

.related{display:flex;flex-wrap:wrap;gap:8px}
.related a{height:34px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink-2);font-size:14px;font-weight:500}
.related a:hover{border-color:var(--accent);color:var(--accent-text);text-decoration:none}

.ad-slot{max-width:1120px;margin:36px auto 0;padding:0 24px}
.sec .ad-slot{padding:0;margin:40px 0 0}
.ad-box{height:90px;border:1px dashed var(--line);border-radius:10px;display:grid;place-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}

/* ---------- footer ---------- */

.site-foot{border-top:1px solid var(--line);background:var(--surface);margin-top:56px}
.site-foot .wrap{padding:22px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;font-size:13px;color:var(--ink-3)}
.site-foot nav{margin-inline-start:auto;display:flex;flex-wrap:wrap;gap:20px}
.site-foot a{color:var(--ink-3)}
.site-foot a:hover{color:var(--ink)}

/* ---------- responsive ---------- */

@media (max-width:900px){
  .group-label{flex:1 1 100%;padding-top:0}
}
@media (max-width:720px){
  .wrap,.sec,.hero-in,.ad-slot{padding-inline:16px}
  .hero-in{padding-top:36px;padding-bottom:32px}
  .head-nav a{display:none}
  .card-cols{display:none}
  .rows{padding-inline:14px}
  .row{grid-template-columns:minmax(0,1fr);gap:6px;align-items:stretch;padding:14px 0;min-height:0}
  .row label{flex-direction:row;align-items:baseline;gap:8px}
  .out{justify-content:space-between;background:var(--surface-2);border-color:var(--line-soft)}
  .search input{padding-inline-end:74px}
  .steps{gap:16px}
  .site-foot nav{margin-inline-start:0}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---------- right-to-left ---------- */

[dir="rtl"] .facts li,
[dir="rtl"] .formula code,
[dir="rtl"] .hero-rows,
[dir="rtl"] .tile-eg,
[dir="rtl"] .card-cols,
[dir="rtl"] table.data td,
[dir="rtl"] table.data th{direction:ltr;text-align:left}
[dir="rtl"] table.data td+td,
[dir="rtl"] table.data th+th{text-align:right}
[dir="rtl"] .row input,
[dir="rtl"] .out .ov{direction:ltr;text-align:right}
[dir="rtl"] .out{justify-content:flex-start}
[dir="rtl"] .crumbs{direction:rtl}
[dir="rtl"] .row .u,
[dir="rtl"] .lang-menu .code{direction:ltr;unicode-bidi:isolate}
[dir="rtl"] .prose p,
[dir="rtl"] .lead,
[dir="rtl"] .notes li,
[dir="rtl"] .faq p,
[dir="rtl"] .steps p{unicode-bidi:plaintext}

/* ---------- flags ---------- */

.flag{width:20px;height:15px;flex:none;border-radius:2px;object-fit:cover;box-shadow:0 0 0 1px rgba(15,22,32,.12)}
html[data-theme="dark"] .flag{box-shadow:0 0 0 1px rgba(255,255,255,.16)}
.lang-btn .chev{opacity:.6}
.lang-btn[aria-expanded="true"] .chev{transform:rotate(180deg)}
.lang-name{display:flex;align-items:center;gap:9px}
.lang-menu a{padding:8px 10px}