:root{--ink:#15171a;--muted:#666b73;--line:#dedfe2;--accent:#14213D;--teal:#0F766E;--surface:#f6f6f5;color-scheme:light;font-family:Arial,"Helvetica Neue",Tahoma,sans-serif}
.site-header .brand{font-family:Tahoma,Arial,sans-serif;font-size:clamp(18px,3.1vw,40px);font-weight:800;letter-spacing:0;line-height:1.16;direction:rtl;white-space:normal;text-align:center;max-width:100%}.site-footer .footer-brand{font-family:Tahoma,Arial,sans-serif;font-size:clamp(21px,2.4vw,29px);font-weight:800;letter-spacing:0;line-height:1.2;direction:rtl;white-space:normal}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-size:17px;line-height:1.72;text-rendering:optimizeLegibility}img,svg{display:block;max-width:100%}a{color:inherit;text-underline-offset:4px}a:hover{color:var(--accent)}button,input,select{font:inherit}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.shell{width:min(1120px,calc(100% - 48px));margin-inline:auto}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.skip-link{position:fixed;right:18px;top:-80px;z-index:1000;padding:10px 16px;background:var(--ink);color:#fff}.skip-link:focus{top:18px}
.site-header{border-top:5px solid var(--accent);background:#fff}.header-topline{min-height:36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #eee;color:#73777e;font-size:12px}.masthead{position:relative;min-height:124px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.brand{grid-column:2;justify-self:center;color:#111215;font-family:"Arial Black",Arial,sans-serif;font-size:clamp(30px,4.1vw,49px);font-weight:900;line-height:1;letter-spacing:-.065em;text-decoration:none;direction:ltr;white-space:nowrap}.brand span,.footer-brand span{color:var(--teal)}.menu-toggle{grid-column:3;grid-row:1;width:42px;height:42px;display:none;align-content:center;justify-items:start;gap:5px;padding:9px 6px;border:0;background:transparent;cursor:pointer}.menu-toggle span{width:21px;height:2px;background:#1c1d1f}.header-search{grid-column:1;grid-row:1;justify-self:start;width:min(240px,22vw);display:flex;align-items:stretch;border:1px solid #aeb4bc;background:#fff}.header-search input{min-width:0;flex:1;padding:10px 11px;border:0;background:transparent;color:var(--ink);font-size:13px}.header-search input:focus{outline:0}.header-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #14213d20}.header-search button{width:42px;min-width:42px;display:grid;place-items:center;padding:0;border:0;background:var(--accent);color:#fff;cursor:pointer}.header-search svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}.nav-row{min-height:58px;display:flex;align-items:center;justify-content:center;border-top:2px solid #1a1b1d;border-bottom:1px solid #cdced1}.site-nav{display:flex;align-items:center;justify-content:center;gap:40px}.site-nav a{position:relative;padding:17px 0 15px;color:#282a2e;font-size:16px;font-weight:750;line-height:1.2;text-decoration:none;white-space:nowrap}.site-nav a:hover,.site-nav a.is-current{color:var(--accent)}.site-nav a.is-current:after{content:"";position:absolute;right:0;left:0;bottom:-1px;height:3px;background:var(--accent)}
.front-page{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(240px,.85fr) minmax(220px,.7fr);padding:38px 0 72px}.front-page a{text-decoration:none}.lead-story{padding-left:30px}.story-kicker{display:flex;align-items:center;gap:12px;margin-bottom:13px;color:#73777e;font-size:13px}.story-kicker strong,.latest-guide-meta strong{color:var(--accent)}.lead-story h1{margin:0 0 18px;font-size:clamp(36px,4.2vw,54px);line-height:1.1;letter-spacing:-.045em}.lead-story>p{margin:0 0 24px;color:#5d626a;font-size:18px;line-height:1.65}.front-image{display:block;margin-top:28px;overflow:hidden;border:1px solid #e2e3e5}.front-image img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover}.story-meta{margin-top:14px;color:#8a8d93;font-size:12px}.front-secondary{border-right:1px solid var(--line)}.front-secondary article{padding:0 28px 28px}.front-secondary article+article{padding-top:27px;border-top:1px solid var(--line)}.front-secondary h2{margin:0 0 12px;font-size:26px;line-height:1.2;letter-spacing:-.035em}.front-secondary p{margin:0;color:#656970;font-size:15px;line-height:1.7}.editor-picks{padding-right:27px;border-right:1px solid var(--line)}.editor-picks h2{margin:0;font-size:22px}.editor-picks>p{margin:3px 0 20px;color:#8b8e94;font-size:13px}.editor-picks ol{margin:0;padding:0;list-style:none;counter-reset:picks}.editor-picks li{counter-increment:picks;display:grid;grid-template-columns:30px 1fr;gap:8px;padding:15px 0;border-top:1px solid var(--line);font-size:14px;font-weight:700;line-height:1.45}.editor-picks li:before{content:"0" counter(picks);color:var(--accent);font-size:12px}
.latest-guides-section{border-top:1px solid #1a1b1d;background:var(--surface)}.section{padding:72px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:32px}.section-heading h2{margin:0;font-size:34px}.section-count{color:var(--muted);font-size:14px}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:9px;color:var(--accent);font-size:13px;font-weight:800}.eyebrow:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}.latest-guides-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:2px solid #1a1b1d}.latest-guide-card{min-width:0;padding:24px;border-left:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.latest-guide-image{display:block;overflow:hidden;border:1px solid #dfe2e6;text-decoration:none}.latest-guide-image img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover}.latest-guide-copy{padding-top:18px}.latest-guide-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#858990;font-size:12px}.latest-guide-card h3{margin:10px 0 11px;font-size:23px;line-height:1.25}.latest-guide-card h3 a,.latest-guide-link{text-decoration:none}.latest-guide-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}.latest-guide-link{display:inline-block;margin-top:16px;font-size:13px;font-weight:800}.guide-section{border-top:1px solid var(--line)}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid #1a1b1d;border-bottom:1px solid var(--line)}.info-card{min-height:225px;padding:26px 28px;border-left:1px solid var(--line)}.info-card:last-child{border-left:0}.info-card .number{display:block;margin-bottom:34px;color:var(--accent);font-size:12px;font-weight:800}.info-card h3{margin:0 0 10px;font-size:24px;line-height:1.2}.info-card p{margin:0;color:var(--muted);font-size:15px}.info-card a{display:inline-block;margin-top:18px;font-size:14px;font-weight:800;text-decoration:none}
h1,h2,h3{color:var(--ink);text-wrap:balance}.article-hero{padding:38px 0 34px;border-bottom:1px solid var(--line);background:#fff}.breadcrumbs{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:31px;color:#92959a;font-size:13px}.breadcrumbs a{color:#6c7076}.article-kicker{display:flex;align-items:center;gap:12px;margin-bottom:14px;color:#74787e;font-size:13px}.article-kicker strong{color:var(--accent)}.article-hero h1{max-width:1040px;margin:0 0 18px;font-size:clamp(36px,4vw,54px);font-weight:650;line-height:1.12;letter-spacing:-.047em}.lead{max-width:900px;margin:0 0 24px;color:#60656c;font-size:20px;line-height:1.65}.article-meta{display:flex;flex-wrap:wrap;gap:8px 22px;color:#85898f;font-size:13px}.article-grid,.tool-layout{display:grid;grid-template-columns:minmax(0,720px) minmax(240px,1fr);gap:48px;align-items:start;padding-top:28px;padding-bottom:90px}.article-body,.tool-main{min-width:0}.body-visual{margin:36px 0 46px}.body-visual:first-child{margin-top:0}.body-visual img{width:100%;height:auto;border:1px solid #d8dee7;background:#f4f7fa}.body-visual figcaption{padding-top:9px;color:#777d86;font-size:12px;line-height:1.55}.body-visual figcaption a{color:var(--accent)}.article-body>p,.article-body>ul{max-width:720px;font-size:20px}.article-body p{margin:0 0 21px}.article-body li{margin-bottom:8px}.article-body h2{margin:88px 0 24px;font-size:31px;line-height:1.23;letter-spacing:-.035em}.article-body h3{margin:38px 0 12px;font-size:22px;line-height:1.3}.article-body a:not(.shortcut){color:var(--accent)}.article-related{min-width:0;align-self:stretch;padding-right:28px;border-right:1px solid var(--line)}.related-sticky{position:sticky;top:16px}.article-related h2{margin:0 0 3px;padding-bottom:15px;border-bottom:2px solid var(--ink);font-size:22px}.article-related ol{margin:0 0 34px;padding:0;list-style:none;counter-reset:related}.article-related li{counter-increment:related;display:grid;grid-template-columns:29px 1fr;gap:7px;padding:16px 0;border-bottom:1px solid var(--line);font-size:14px;font-weight:700;line-height:1.45}.article-related li:before{content:"0" counter(related);color:var(--accent);font-size:11px}.article-related a{text-decoration:none}.quick-answer{margin:30px 0;padding:22px 24px;border-top:2px solid var(--accent);border-bottom:1px solid #c7ccd5;background:#f7f8fa;font-size:20px}.quick-answer strong{display:block;margin-bottom:7px;color:var(--accent);font-size:13px}.quick-answer p{margin:0}.article-table-wrap{width:100%;margin:30px 0;overflow-x:auto;border-top:2px solid #1a1b1d;border-bottom:1px solid #1a1b1d;background:#fff}.article-table{width:100%;border-collapse:collapse;table-layout:fixed}.article-table caption{padding:7px 0;text-align:right;color:var(--muted);font-size:13px}.article-table th,.article-table td{padding:14px 15px;border-left:1px solid #cfd7e1;border-bottom:1px solid #cfd7e1;vertical-align:middle;text-align:center}.article-table thead th{background:var(--accent);color:#fff;font-size:14px;font-weight:850}.article-table tbody th{background:#f0f2f6;color:var(--accent);font-weight:850}.article-table tr:last-child>*{border-bottom:0}.article-table tr>*:last-child{border-left:0}.article-action{margin:34px 0 42px}.sources{margin:0;padding-right:24px}.source-note{color:var(--muted);font-size:14px!important}.link-panel{margin:26px 0;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.link-panel h2,.link-panel h3{margin:0 0 8px!important;font-size:22px!important}.link-panel p{margin:0;color:var(--muted);font-size:15px}
.directory-grid{display:grid;grid-template-columns:minmax(0,720px) minmax(240px,1fr);gap:48px;padding-top:36px;padding-bottom:90px}.directory-card{border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}.directory-card img{width:100%;aspect-ratio:16/9;object-fit:cover}.directory-card>div{padding:25px 0}.directory-card h2{margin:0 0 10px;font-size:30px}.directory-card h2 a{text-decoration:none}.directory-card p{color:var(--muted)}.directory-card>div>a{font-weight:800;text-decoration:none}.directory-side{padding-right:28px;border-right:1px solid var(--line)}.directory-side h2{margin:0;font-size:22px}.directory-side p{color:var(--muted);font-size:15px}
.calculator{border-top:2px solid var(--ink)}.calculator h2,.method h2,.calc-result h2{margin:32px 0 18px;font-size:26px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:grid;gap:6px;min-width:0;font-size:14px;font-weight:700}.field input,.field select,.search-controls input{width:100%;min-width:0;min-height:46px;padding:10px 12px;border:1px solid #aeb4bc;border-radius:0;background:#fff;color:var(--ink);direction:ltr;text-align:right}.field select{direction:rtl}.field input:focus,.field select:focus,.search-controls input:focus{border-color:var(--accent);outline:2px solid #14213d44;outline-offset:0}.field-note{margin:17px 0 35px;color:var(--muted);font-size:14px}.form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.calculate-button,.reset-button,.search-controls button{min-height:46px;padding:10px 20px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-weight:800;cursor:pointer}.calculate-button:hover,.search-controls button:hover{background:var(--accent)}.reset-button{background:#fff;color:var(--accent)}.calc-error{margin-top:18px;padding:12px 16px;border-right:3px solid #aa3131;background:#fff5f4;color:#8f2525;font-weight:700}.calc-result{margin-top:38px;padding:24px;border-top:2px solid var(--accent);background:#f7f8fa}.result-hero{display:grid;gap:4px;padding:20px 0;border-bottom:1px solid var(--line)}.result-hero>span{font-weight:700}.result-hero strong{color:var(--accent);font-size:36px}.result-hero small{color:var(--muted)}.result-list{margin:0}.result-list div{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}.result-list dd{margin:0;font-weight:800}.calc-result>p,.method p{color:var(--muted);font-size:15px}.method{margin-top:48px}.method a{color:var(--accent)}.search-page{min-height:50vh;padding:35px 0 85px}.search-page form{max-width:720px}.search-page label{display:block;margin-bottom:8px;font-weight:700}.search-controls{display:flex}.search-controls input{flex:1;direction:rtl}.search-results{display:grid;max-width:720px}.search-result{padding:20px 0;border-top:1px solid var(--line)}.search-result h2{margin:0 0 7px;font-size:23px}.search-result h2 a{text-decoration:none}.search-result p{margin:0;color:var(--muted);font-size:15px}
.site-footer{border-top:2px solid var(--ink);background:#f5f5f4}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:44px;padding:54px 0}.footer-brand{font-family:"Arial Black",Arial,sans-serif;font-size:25px;font-weight:900;letter-spacing:-.065em;text-decoration:none;direction:ltr;display:inline-block}.footer-grid p{max-width:340px;color:var(--muted);font-size:14px}.footer-grid h2{margin:0 0 16px;font-size:14px}.footer-grid>div>a:not(.footer-brand){display:block;margin-bottom:9px;font-size:14px;text-decoration:none}.footer-bottom{padding:14px 0;border-top:1px solid var(--line);color:#858990;font-size:12px}
@media(max-width:1000px){.front-page{grid-template-columns:minmax(0,1.4fr) minmax(220px,.8fr)}.editor-picks{grid-column:1/-1;margin-top:36px;padding:26px 0 0;border-right:0;border-top:1px solid var(--line)}.editor-picks ol{display:grid;grid-template-columns:repeat(2,1fr);gap:0 24px}.article-grid,.tool-layout,.directory-grid{grid-template-columns:minmax(0,1fr) 230px;gap:28px}}
@media(max-width:768px){body{font-size:16px}.shell{width:calc(100% - 40px)}.header-topline{display:none}.masthead{min-height:82px;grid-template-columns:42px 1fr 42px;gap:8px}.brand{grid-column:2;font-size:clamp(24px,7vw,34px)}.menu-toggle{grid-column:3;display:grid}.header-search{grid-column:1;width:42px;height:42px;overflow:hidden;border:0}.header-search input{display:none}.header-search button{width:42px}.header-search.is-open{position:absolute;z-index:30;top:75px;right:0;left:0;width:100%;height:45px;overflow:visible;border:1px solid #aeb4bc}.header-search.is-open input{display:block}.nav-row{display:none;min-height:0;border-bottom:0}.nav-row.is-open{display:block}.site-nav{display:grid;gap:0;width:100%;padding:8px 0}.site-nav a{padding:13px 6px;border-bottom:1px solid var(--line)}.front-page{display:block;padding:30px 0 55px}.lead-story{padding-left:0}.lead-story h1{font-size:clamp(32px,8vw,42px)}.lead-story>p{font-size:18px}.front-secondary{margin-top:35px;border-right:0;border-top:1px solid var(--line)}.front-secondary article{padding:25px 0}.front-secondary article+article{padding-top:25px}.editor-picks{margin-top:0}.editor-picks ol{display:block}.section{padding:50px 0}.section-heading{display:block}.section-heading h2{font-size:29px}.latest-guides-grid,.card-grid{grid-template-columns:1fr}.latest-guide-card,.info-card{border-left:0}.info-card{min-height:0;border-bottom:1px solid var(--line)}.info-card .number{margin-bottom:12px}.article-hero{padding:25px 0 30px}.breadcrumbs{margin-bottom:25px}.article-hero h1{font-size:clamp(32px,8vw,42px)}.lead{font-size:18px}.article-grid,.tool-layout,.directory-grid{display:block;padding-top:28px;padding-bottom:70px}.article-related,.directory-side{margin-top:50px;padding-right:0;border-right:0}.article-body>p,.article-body>ul{font-size:18px}.article-body h2{margin-top:60px;font-size:27px}.quick-answer{font-size:18px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:40px 0}.footer-grid>div:first-child{grid-column:1/-1}.form-grid{grid-template-columns:1fr}.result-hero strong{font-size:30px}}
@media(max-width:420px){.shell{width:calc(100% - 36px)}.brand{font-size:24px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.article-table{min-width:500px}.result-list div{font-size:14px}}
.home-hero .lead{margin-bottom:0}.lead-story h2{margin:0 0 18px;font-size:clamp(30px,3.4vw,42px);line-height:1.15;letter-spacing:-.035em}
@media(max-width:768px){.lead-story h2{font-size:clamp(30px,7vw,38px)}}

/* Editorial headings, clean links, and image credits. */
a,a:hover,a:focus-visible{text-decoration:none}
.article-hero h1{font-size:clamp(42px,5vw,62px);font-weight:800;line-height:1.16;letter-spacing:-.025em;padding-right:20px;border-right:5px solid var(--teal)}
.article-body>h2,.calculator>h2,.method>h2,.calc-result>h2{font-size:clamp(32px,3.2vw,40px);font-weight:800;line-height:1.3;letter-spacing:-.015em;padding-right:16px;border-right:5px solid var(--teal)}
.article-body>h3{font-size:clamp(26px,2.5vw,31px);font-weight:800;line-height:1.3;padding-bottom:10px;border-bottom:2px solid var(--line)}
.section-heading h2{font-size:clamp(36px,3.5vw,44px);font-weight:800}
.latest-guide-card h3,.info-card h3{font-size:27px;font-weight:800}
.article-related h2{font-size:25px}
.photo-credits{padding:18px 0 24px;border-top:1px solid var(--line);background:#f8f9f9;color:#697078;font-size:12px;line-height:1.6}
.photo-credits h2{margin:0 0 5px;color:#5b626a;font-size:13px;font-weight:800}
.photo-credits ul{margin:0;padding-right:18px}.photo-credits li+li{margin-top:4px}.photo-credits a{color:#45586b}
@media(max-width:768px){
  .article-hero h1{font-size:clamp(36px,8.7vw,46px);padding-right:14px;border-right-width:4px}
  .article-body>h2,.calculator>h2,.method>h2,.calc-result>h2{font-size:clamp(30px,7.3vw,36px);padding-right:12px;border-right-width:4px}
  .article-body>h3{font-size:26px}
  .article-table-wrap{overflow:visible;border:0;background:transparent}
  .article-table-wrap .article-table{display:block;min-width:0;width:100%;border-collapse:separate}
  .article-table caption{display:block;margin-bottom:13px;padding:0;text-align:right;line-height:1.5}
  .article-table thead{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
  .article-table tbody{display:grid;gap:14px}
  .article-table tbody tr{display:block;padding:17px 18px;border:1px solid #d7dde4;border-radius:12px;background:#fff;box-shadow:0 4px 14px #14213d0b}
  .article-table tbody th{display:block;margin-bottom:5px;padding:0 0 11px;border:0;border-bottom:2px solid var(--teal);background:transparent;color:var(--accent);font-size:19px;text-align:right}
  .article-table tbody td{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border:0;border-bottom:1px solid #e8ebef;text-align:left}
  .article-table tbody td::before{content:attr(data-label);flex:0 0 44%;color:#536170;font-weight:800;text-align:right}
  .article-table tbody tr>td:last-child{border-bottom:0}
}

/* Centered, readable teaser text on homepage thumbnails. */
.front-image,.latest-guide-image{position:relative}
.thumbnail-hook{position:absolute;z-index:1;top:50%;left:50%;transform:translate(-50%,-50%);display:block;width:max-content;max-width:calc(100% - 32px);padding:13px 19px;border:1px solid #ffffff75;border-radius:12px;background:#101b2be8;box-shadow:0 8px 26px #0006;color:#fff;font-family:Tahoma,Arial,sans-serif;font-size:clamp(18px,2vw,25px);font-weight:900;line-height:1.45;text-align:center;text-wrap:balance;direction:rtl;pointer-events:none}
.front-image .thumbnail-hook{max-width:calc(100% - 48px);padding:17px 24px;font-size:clamp(23px,2.8vw,34px)}
.front-image:hover .thumbnail-hook,.latest-guide-image:hover .thumbnail-hook{background:#0a3144f0;color:#fff}
@media(max-width:420px){.thumbnail-hook{max-width:calc(100% - 24px);padding:10px 12px;font-size:18px}.front-image .thumbnail-hook{max-width:calc(100% - 28px);padding:13px 15px;font-size:23px}}