@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-cyrillic-ext-400-normal.g30qAdWV.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-ext-400-normal.Dsrv2Tcn.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-cyrillic-400-normal.DZqxrq2p.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-400-normal.BTotfTJu.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-greek-400-normal._efipK4i.woff2) format("woff2"),url(/_astro/ibm-plex-sans-greek-400-normal.D9ESIMu3.woff) format("woff");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-vietnamese-400-normal.DG4YqDda.woff2) format("woff2"),url(/_astro/ibm-plex-sans-vietnamese-400-normal.fK1oJ5dG.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-latin-ext-400-normal.C5H60-Va.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-ext-400-normal.RBey6euL.woff) format("woff");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-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-latin-400-normal.CDDApCn2.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-400-normal.CYLoc0-x.woff) format("woff");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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Sans;font-style:italic;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-cyrillic-ext-400-italic.BELOEI8R.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-ext-400-italic.CfSXsIbO.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Sans;font-style:italic;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-cyrillic-400-italic.D9J6q4_O.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-400-italic.Bf1n82Tb.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:IBM Plex Sans;font-style:italic;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-greek-400-italic.BEZwmy7D.woff2) format("woff2"),url(/_astro/ibm-plex-sans-greek-400-italic.CTYLy0lX.woff) format("woff");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:IBM Plex Sans;font-style:italic;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-vietnamese-400-italic.BbRnwouv.woff2) format("woff2"),url(/_astro/ibm-plex-sans-vietnamese-400-italic.78jqtfZH.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Sans;font-style:italic;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-latin-ext-400-italic.Du9zzoL2.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-ext-400-italic.V_9i1P_m.woff) format("woff");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:italic;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-latin-400-italic.CZTNEAuW.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-400-italic.CsGl1sm0.woff) format("woff");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+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-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-cyrillic-ext-600-normal.DUMzJB7m.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-ext-600-normal.Bz0x94Yp.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-cyrillic-600-normal.71GNu3SW.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-600-normal.BGq0mW3O.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-greek-600-normal.DzTrcv_p.woff2) format("woff2"),url(/_astro/ibm-plex-sans-greek-600-normal.D-CqTdkO.woff) format("woff");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-vietnamese-600-normal.DpPYBSTl.woff2) format("woff2"),url(/_astro/ibm-plex-sans-vietnamese-600-normal.DgdngZtN.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-latin-ext-600-normal.DOrvGEcy.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-ext-600-normal.DIrixKbi.woff) format("woff");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-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-latin-600-normal.CuJfVYMP.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-600-normal.Cu4Hd6ag.woff) format("woff");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+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-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-cyrillic-ext-700-normal.BmRLXWpJ.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-ext-700-normal.DCQwxkRk.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-cyrillic-700-normal.D_uavGvn.woff2) format("woff2"),url(/_astro/ibm-plex-sans-cyrillic-700-normal.RFb1v-CK.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-greek-700-normal.wyJ6jzdA.woff2) format("woff2"),url(/_astro/ibm-plex-sans-greek-700-normal.CkZN0sRy.woff) format("woff");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-vietnamese-700-normal.CkEo6LDy.woff2) format("woff2"),url(/_astro/ibm-plex-sans-vietnamese-700-normal.BV5B8Are.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-latin-ext-700-normal.aMgXseD4.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-ext-700-normal.DZH6Xh-4.woff) format("woff");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-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-latin-700-normal.Bxkt5Cjx.woff2) format("woff2"),url(/_astro/ibm-plex-sans-latin-700-normal.Bth3BMcD.woff) format("woff");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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--desk: #eef1f4;--paper: #ffffff;--ink: #141c26;--ink-2: #4a5663;--ink-3: #78848f;--line: #d3dae1;--line-soft: #e6ebf0;--accent: #1f4e9c;--accent-ink: #ffffff;--accent-soft: #e3ebf7;--tape: #d98e04;--tape-soft: #fbf1dc;--focus: #1f4e9c;--danger: #b3261e;--radius: 6px;--shadow: 0 1px 2px rgba(20, 28, 38, .06), 0 8px 28px rgba(20, 28, 38, .08);--wrap: 1120px;color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--desk: #0f151c;--paper: #171f28;--ink: #e8edf2;--ink-2: #b2bdc8;--ink-3: #85919c;--line: #2b3641;--line-soft: #1d262f;--accent: #7aa6e6;--accent-ink: #0c1626;--accent-soft: #1b2a40;--tape: #e8a92b;--tape-soft: #2b2415;--focus: #7aa6e6;color-scheme:dark}}:root[data-theme=dark]{--desk: #0f151c;--paper: #171f28;--ink: #e8edf2;--ink-2: #b2bdc8;--ink-3: #85919c;--line: #2b3641;--line-soft: #1d262f;--accent: #7aa6e6;--accent-ink: #0c1626;--accent-soft: #1b2a40;--tape: #e8a92b;--tape-soft: #2b2415;--focus: #7aa6e6;color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--desk);color:var(--ink);font-family:IBM Plex Sans,system-ui,-apple-system,Segoe UI,sans-serif;font-size:16px;line-height:1.55;font-variant-numeric:tabular-nums}a{color:var(--accent)}img{max-width:100%}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}.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}.top{border-bottom:1px solid var(--line);background:var(--desk)}.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap}.brand{font-weight:700;letter-spacing:-.01em;color:var(--ink);text-decoration:none;font-size:18px}.brand b{color:var(--accent);font-weight:700}.nav{display:flex;gap:18px;flex-wrap:wrap;font-size:15px;margin-left:auto}.nav a{color:var(--ink-2);text-decoration:none}.nav a[aria-current=page],.nav a:hover{color:var(--ink)}@media(max-width:640px){.top .wrap{padding-top:10px;padding-bottom:10px}.top .langs{order:2;margin-left:auto}.top .nav{order:3;width:100%;margin-left:0;gap:4px 14px;font-size:14px}}.langs{position:relative;font-size:14px}.langs summary{list-style:none;cursor:pointer;padding:6px 10px;border:1px solid var(--line);border-radius:var(--radius);color:var(--ink-2);font-weight:600}.langs summary::-webkit-details-marker{display:none}.langs summary:after{content:" ▾";font-size:11px}.langs ul{position:absolute;right:0;top:calc(100% + 6px);z-index:10;margin:0;padding:6px;list-style:none;background:var(--paper);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);min-width:150px}.langs a{display:block;padding:7px 10px;border-radius:6px;color:var(--ink);text-decoration:none}.langs a:hover{background:var(--line-soft)}.langs a[aria-current=true]{font-weight:700;color:var(--accent)}.foot{border-top:1px solid var(--line);margin-top:72px;padding:28px 0 40px;color:var(--ink-3);font-size:14px}.foot .wrap{display:flex;gap:24px;flex-wrap:wrap;justify-content:space-between}.foot a{color:var(--ink-2)}.facade{max-width:760px;padding:28px 0 0}.facade .crumbs{font-size:14px;margin:0 0 14px;color:var(--ink-3)}.facade .crumbs a{color:var(--ink-2)}.facade h1{font-size:clamp(30px,4vw,42px);line-height:1.1;letter-spacing:-.02em;margin:0 0 12px;font-weight:700}.facade .lead{margin:0 0 10px;color:var(--ink-2);font-size:18px}.facade .meta{margin:0 0 22px;font-size:14px;color:var(--ink-3)}.hero-figure{margin:0 0 28px}.hero-figure img{display:block;width:100%;height:auto;border-radius:8px;border:1px solid var(--line);aspect-ratio:16 / 9;object-fit:cover}.hero-figure figcaption{font-size:13px;color:var(--ink-3);margin-top:6px}.facade h2{font-size:25px;letter-spacing:-.015em;line-height:1.2;margin:44px 0 12px}.facade h3{font-size:18px;margin:26px 0 6px}.facade p,.facade li{color:var(--ink-2)}.facade p strong,.facade li strong{color:var(--ink)}.facade table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px;background:var(--paper);border-radius:var(--radius);overflow:hidden}.facade th,.facade td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line-soft);vertical-align:top}.facade th{font-weight:600;color:var(--ink)}.facade td{color:var(--ink-2)}.facade td.num,.facade th.num{text-align:right;white-space:nowrap}.facade .note{font-size:14px;color:var(--ink-3);margin-top:-8px}@media(max-width:640px){.facade table{display:block;overflow-x:auto}}.tape{margin:8px 0 28px;padding:18px 18px 14px;background:var(--paper);border:1px solid var(--line);border-radius:8px}.tape .label{font-size:13px;color:var(--ink-3);margin:0 0 6px}.tape .range{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:0 0 12px}.tape .range b{font-size:clamp(28px,4vw,38px);font-weight:700;letter-spacing:-.02em;color:var(--ink)}.tape .range span{color:var(--ink-3);font-size:15px}.tape .bar{position:relative;height:22px;background:var(--tape-soft);border-radius:4px;overflow:hidden;background-image:repeating-linear-gradient(to right,transparent 0 9%,var(--line) 9% 10%)}.tape .bar i{position:absolute;top:0;bottom:0;background:var(--tape);opacity:.85}.tape .ticks{display:flex;justify-content:space-between;font-size:12px;color:var(--ink-3);margin-top:4px}.tape .src{font-size:13px;color:var(--ink-3);margin:10px 0 0}.calc,.tool{margin:6px 0 30px;padding:20px;background:var(--paper);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:8px}.calc h2,.tool h2{margin:0 0 14px;font-size:20px}.calc .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px 16px}.calc label{display:block;font-size:14px;color:var(--ink-2);font-weight:600}.calc label span{display:block;font-weight:400;color:var(--ink-3);font-size:13px}.calc input,.calc select{width:100%;margin-top:4px;padding:9px 10px;font:inherit;color:var(--ink);background:var(--desk);border:1px solid var(--line);border-radius:var(--radius)}.calc input:focus,.calc select:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px var(--accent-soft)}.calc .result{margin-top:18px;padding:14px 16px;background:var(--desk);border-radius:var(--radius);display:grid;gap:6px}.calc .result .big{font-size:clamp(26px,3.5vw,34px);font-weight:700;letter-spacing:-.02em;color:var(--ink)}.calc .result .big small{font-size:15px;font-weight:400;color:var(--ink-3);margin-left:6px}.calc .result p{margin:0;font-size:14px;color:var(--ink-2)}.calc .fine{margin:10px 0 0;font-size:13px;color:var(--ink-3)}.calc .warn{color:var(--danger);font-weight:600}.cta{margin:40px 0 0;padding:16px 18px;background:var(--accent-soft);border-radius:8px;color:var(--ink)}.cta p{margin:0;color:var(--ink)}.cta a{font-weight:600}.faq h3{font-size:17px}.sources{margin-top:36px;font-size:14px}.sources ol{padding-left:20px}.sources li{margin:6px 0;color:var(--ink-2);word-break:break-word}.hub{padding:36px 0 0}.hub h1{font-size:clamp(30px,4vw,44px);line-height:1.08;letter-spacing:-.02em;margin:0 0 10px;font-weight:700}.hub .lead{margin:0 0 28px;color:var(--ink-2);font-size:18px;max-width:46em}.hub h2{font-size:22px;margin:36px 0 12px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px;padding:0;list-style:none}.cards a{display:block;height:100%;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);text-decoration:none;font-weight:600}.cards a:hover{border-color:var(--accent)}.cards span{display:block;font-weight:400;font-size:14px;color:var(--ink-3);margin-top:4px}.text{max-width:720px;padding:36px 0 0}.text h1{font-size:clamp(28px,3.5vw,38px);margin:0 0 16px;letter-spacing:-.02em}.text h2{font-size:22px;margin:32px 0 10px}.text p,.text li{color:var(--ink-2)}.ad{margin:28px 0;min-height:0}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}