@font-face{font-family:PhysictomyArticle;src:url('../../inc/fonts/iransansx/IRANSansXV.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
html body .pt-editorial{padding:36px 20px 64px;background:var(--pt-bg,#f3f7f9);color:var(--pt-text,#294b60);direction:rtl;text-align:right;font-family:PhysictomyArticle,Tahoma,sans-serif;font-weight:400;font-synthesis:none}
html body .pt-editorial :is(h1,h2,h3,p,li,a,strong,span,time){font-family:inherit;letter-spacing:normal}
.pt-article{max-width:1120px;width:100%;margin:auto;padding:36px 42px;border:1px solid var(--pt-border,#dce6ec);border-radius:20px;background:var(--pt-surface,#fff);box-sizing:border-box;min-width:0}
.pt-article-breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;line-height:1.9;margin-bottom:24px}.pt-article a{color:var(--pt-link,#28536e);text-underline-offset:4px}.pt-article-breadcrumb a{text-decoration:none}
.pt-article-eyebrow{font-size:13px;color:var(--pt-muted,#607785)}
html body .pt-editorial .pt-article-header h1{color:var(--pt-text-strong,#122d40);font-size:30px;font-weight:750;line-height:1.85;margin:10px 0 16px;overflow-wrap:break-word;height:auto;max-height:none}
.pt-article-meta{display:flex;gap:10px;flex-wrap:wrap;font-size:13px;font-weight:400;color:var(--pt-muted,#607785);line-height:1.9;margin:0 0 26px}
html body .pt-article-content{font-size:17px;font-weight:400;line-height:2.15;overflow-wrap:break-word}
html body .pt-article-content p{font-size:inherit;font-weight:400;line-height:inherit;margin:0 0 20px;max-height:none;height:auto}
html body .pt-article-content h2{font-size:25px;font-weight:700;color:var(--pt-text-strong,#122d40);line-height:1.9;margin:36px 0 16px;scroll-margin-top:110px;height:auto;max-height:none}
html body .pt-article-content h3{font-size:21px;font-weight:650;line-height:1.9;color:var(--pt-text-strong,#122d40);margin:26px 0 12px}
html body .pt-article-content strong{font-weight:650}.pt-article-content ul,.pt-article-content ol{padding-inline-start:24px;margin:0 0 24px}
html body .pt-article-content li{font-size:inherit;font-weight:400;padding-inline-start:4px;margin:0 0 10px;line-height:2.1}
html body .pt-article-content .pt-article-lead{font-size:17px;line-height:2.15;font-weight:400}
.pt-article-toc,.pt-article-note,.pt-article-handout{padding:20px 24px;border:1px solid var(--pt-border,#dce6ec);border-radius:14px;background:var(--pt-surface-soft,#eef5f8);margin:26px 0}
html body .pt-article-content>.pt-article-toc:first-child{margin:0 0 30px}.pt-article-toc>strong{display:block;font-size:16px;color:var(--pt-text-strong,#122d40)}
.pt-article-toc ol{margin:12px 0 0}.pt-article-toc a{display:inline-block;font-size:15px;font-weight:400;line-height:2;text-decoration:underline}.pt-article-toc li:last-child{margin-bottom:0}
html body .pt-article-note h2{margin:0 0 12px}.pt-article-note p:last-child,.pt-article-note ul:last-child{margin-bottom:0}
.pt-article-video{margin:36px 0}.pt-article-video__frame{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:14px;background:var(--pt-surface-soft,#eef5f8)}.pt-article-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
html body .pt-article-video>p{font-size:13px;margin:10px 0 0;line-height:1.9}
.pt-article-handout{display:flex;gap:16px;flex-wrap:wrap;align-items:center}.pt-article-handout>div{display:grid;gap:4px;flex:1}.pt-article-handout span{font-size:12px;color:var(--pt-muted,#607785)}
html body a.pt-article-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 20px;box-sizing:border-box;background:var(--pt-accent,#f4ac64);color:var(--pt-on-accent,#09111a);border-radius:10px;text-decoration:none;font-weight:650}.pt-article-handout>a:last-child{font-size:13px}
.pt-article-footer{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--pt-border,#dce6ec);padding-top:22px;margin-top:32px;font-size:14px}.pt-article :is(a,button):focus-visible{outline:3px solid var(--pt-accent,#f4ac64);outline-offset:3px}
@media(max-width:767px){
 html body .pt-editorial{padding:18px 12px 40px}.pt-article{padding:22px 18px;border-radius:16px}
 html body .pt-editorial .pt-article-header h1{font-size:24px;font-weight:700;line-height:1.9}
 html body .pt-article-content,html body .pt-article-content .pt-article-lead{font-size:16px;font-weight:400;line-height:2.15}
 html body .pt-article-content h2{font-size:21px;line-height:1.9;margin:30px 0 14px}html body .pt-article-content h3{font-size:18px}
 .pt-article-toc,.pt-article-note,.pt-article-handout{padding:16px;margin:22px 0}.pt-article-toc a{font-size:14px;line-height:2.1}.pt-article-toc li{margin-bottom:8px!important}
 .pt-article-handout{flex-direction:column;align-items:stretch}.pt-article-handout .pt-article-button{width:100%}.pt-article-footer{flex-wrap:wrap}.pt-article-breadcrumb a{min-height:36px;display:inline-flex;align-items:center}
}

/* Homepage blog: native post links, no login or JavaScript required. */
.pt-home-articles{direction:rtl;text-align:right;font-family:PhysictomyArticle,Tahoma,sans-serif;color:var(--pt-text,#294b60);margin:36px 0 28px;width:100%;min-width:0}
.pt-home-articles__heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.pt-home-articles__heading>div>span{font-size:13px;color:var(--pt-muted,#607785);line-height:1.9}
html body .pt-home-articles__heading h2{font-family:inherit;font-size:26px;font-weight:700;line-height:1.8;margin:4px 0 0;color:var(--pt-text-strong,#122d40)}
.pt-home-articles__heading>a{display:inline-flex;align-items:center;gap:8px;min-height:44px;color:var(--pt-link,#28536e);font-size:14px;line-height:1.8;white-space:nowrap;text-decoration:none}
.pt-home-articles__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.pt-home-article{min-width:0;overflow:hidden;border:1px solid var(--pt-border,#dce6ec);border-radius:16px;background:var(--pt-surface,#fff)}
html body a.pt-home-article__link{display:flex;flex-direction:column;height:100%;color:inherit;text-decoration:none}.pt-home-article__image img{display:block;width:100%;height:auto;aspect-ratio:1/1;object-fit:cover}
.pt-home-article__body{padding:24px;display:flex;flex-direction:column;flex:1;gap:12px;min-width:0}.pt-home-article__label{font-size:12px;line-height:1.9;color:var(--pt-accent-deep,#98591e)}
html body .pt-home-article h3{font-family:inherit;font-weight:700;font-size:20px;line-height:1.9;margin:0;color:var(--pt-text-strong,#122d40);overflow-wrap:anywhere}
html body .pt-home-article p{font-family:inherit;font-size:15px;font-weight:400;line-height:2.1;margin:0;color:var(--pt-muted,#607785)}
.pt-home-article__footer{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:auto;padding-top:12px;font-size:13px;line-height:1.9}.pt-home-article__footer time{color:var(--pt-muted,#607785)}.pt-home-article__footer>span{color:var(--pt-link,#28536e);font-weight:600}
.pt-home-articles a:focus-visible{outline:3px solid var(--pt-accent,#f4ac64);outline-offset:-3px}.pt-home-article:has(a:hover){border-color:var(--pt-accent,#f4ac64)}
@media(max-width:767px){.pt-home-articles{margin:28px 0 20px}.pt-home-articles__heading{gap:12px;flex-wrap:wrap;margin-bottom:16px}html body .pt-home-articles__heading h2{font-size:22px}.pt-home-articles__grid,.pt-home-articles__grid[data-count="2"]{grid-template-columns:minmax(0,1fr);gap:16px}.pt-home-article__body{padding:18px;gap:10px}html body .pt-home-article h3{font-size:18px}html body .pt-home-article p{font-size:14px}}



/* Handouts: equal cards, readable file details and touch-sized actions. */
html body .pt-article-content .pt-handouts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:22px 0 32px;direction:rtl}
html body .pt-handout-card{display:flex;flex-direction:column;min-width:0;gap:18px;padding:24px;box-sizing:border-box;border:1px solid var(--pt-border,#dce6ec);border-radius:16px;background:var(--pt-surface,#fff);box-shadow:0 4px 18px rgba(18,45,64,.04);text-align:right}
html body .pt-handout-card__heading{display:grid;grid-template-columns:48px minmax(0,1fr);align-items:center;gap:14px;min-width:0}
html body .pt-handout-card__icon{display:flex;align-items:center;justify-content:center;align-self:start;width:48px;height:56px;border:1px solid var(--pt-border,#dce6ec);border-radius:10px;background:var(--pt-surface-soft,#eef5f8);color:var(--pt-link,#28536e);font-size:13px;font-weight:750;line-height:1;direction:ltr}
html body .pt-article-content .pt-handout-card h3{margin:0 0 5px;font-size:17px;line-height:1.8;font-weight:700;color:var(--pt-text-strong,#122d40);overflow-wrap:break-word}
html body .pt-handout-card__meta{display:block;font-size:13px;line-height:1.9;color:var(--pt-muted,#607785)}
html body .pt-article-content p.pt-handout-card__description{margin:0;font-size:14px;line-height:1.95;color:var(--pt-muted,#607785)}
html body .pt-handout-card__actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:auto;padding-top:4px}
html body .pt-handout-card__actions>a{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:0;min-height:48px;margin:0;padding:10px 12px;box-sizing:border-box;border:1px solid transparent;border-radius:10px;font-size:14px;font-weight:650;line-height:1.6;text-decoration:none;white-space:nowrap;transition:background-color .15s,border-color .15s}
html body .pt-handout-card__actions svg{width:19px;height:19px;flex:none}
html body a.pt-handout-card__download{background:var(--pt-accent,#f4ac64);color:var(--pt-on-accent,#09111a)}
html body a.pt-handout-card__view{background:var(--pt-surface-soft,#eef5f8);border-color:var(--pt-border,#dce6ec);color:var(--pt-link,#28536e)}
html body a.pt-handout-card__download:hover{filter:brightness(.96)}
html body a.pt-handout-card__view:hover{border-color:var(--pt-accent,#f4ac64)}
@media(max-width:767px){html body .pt-article-content .pt-handouts{grid-template-columns:minmax(0,1fr);gap:14px;margin:18px 0 26px}html body .pt-handout-card{padding:18px;gap:16px}html body .pt-handout-card__heading{gap:12px}html body .pt-article-content .pt-handout-card h3{font-size:16px}}
@media(prefers-reduced-motion:reduce){html body .pt-handout-card__actions>a{transition:none}}