:root{--psu-theme-bg:#F4F6FA;--psu-theme-ink:#0B1220;--psu-theme-muted:#667085;--psu-theme-line:#E7ECF3;--psu-theme-primary:#155EEF;--psu-theme-radius:24px;--psu-theme-shadow:0 18px 55px rgba(11,18,32,.075)}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;background:var(--psu-theme-bg);color:var(--psu-theme-ink);font-family:Vazirmatn,IRANSans,system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;line-height:1.8;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}a{color:inherit}img{max-width:100%;height:auto}button,input,textarea,select{font:inherit}.psu-site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.82);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);border-bottom:1px solid rgba(231,236,243,.86);box-shadow:0 8px 24px rgba(11,18,32,.045)}.psu-header-inner{max-width:1400px;margin-inline:auto;padding:.8rem 1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.psu-logo{display:flex;align-items:center;gap:.75rem;text-decoration:none;min-width:0}.psu-logo-mark{width:42px;height:42px;border-radius:16px;background:linear-gradient(135deg,#0B1220,#155EEF);color:#fff;display:grid;place-items:center;flex:0 0 auto;box-shadow:0 14px 30px rgba(21,94,239,.18)}.psu-logo-image img{max-height:44px;width:auto;display:block}.psu-logo-text{display:flex;flex-direction:column;min-width:0}.psu-logo-text strong{font-size:1rem;font-weight:950;line-height:1.35;white-space:nowrap}.psu-logo-text small{font-size:.72rem;color:var(--psu-theme-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:280px}.psu-main-nav{display:none}.psu-main-nav ul{display:flex;align-items:center;gap:.5rem;list-style:none;margin:0;padding:0}.psu-main-nav a{text-decoration:none;font-size:.86rem;font-weight:850;color:#344054;border-radius:999px;padding:.52rem .82rem}.psu-main-nav a:hover{background:#F2F4F7;color:var(--psu-theme-primary)}@media(min-width:960px){.psu-main-nav{display:block}}.psu-header-actions{display:flex;align-items:center;gap:.5rem}.psu-header-btn,.psu-header-cart{min-height:40px;border-radius:999px;border:1px solid var(--psu-theme-line);background:#fff;text-decoration:none;color:var(--psu-theme-ink);font-size:.84rem;font-weight:900;padding:.5rem .85rem;display:inline-flex;align-items:center;justify-content:center}.psu-header-cart{width:42px;padding:0;cursor:pointer}.psu-header-btn:hover,.psu-header-cart:hover{color:var(--psu-theme-primary);border-color:rgba(21,94,239,.3)}.psu-header-cats{max-width:1400px;margin:0 auto;padding:0 1rem .65rem}.psu-header-cats .psu-category-rail{margin:0;padding:0}.psu-header-cats .psu-category-scroll{border-radius:20px;padding:.45rem}.psu-header-cats .psu-category-chip{min-height:58px;min-width:104px;font-size:.72rem}.psu-header-cats .psu-category-icon{width:30px;height:30px;border-radius:12px;font-size:1rem}.psu-site-main{min-height:60vh}.psu-site-footer{max-width:1400px;margin:2rem auto 1.2rem;padding:0 1rem}.psu-footer-card{background:#fff;border:1px solid var(--psu-theme-line);border-radius:28px;box-shadow:var(--psu-theme-shadow);padding:1.25rem;display:grid;grid-template-columns:1fr;gap:1rem}.psu-footer-brand{display:flex;align-items:center;gap:.8rem}.psu-footer-brand strong{font-weight:950}.psu-footer-brand p{margin:.2rem 0 0;color:var(--psu-theme-muted);font-size:.86rem}.psu-footer-links ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.6rem}.psu-footer-links a{text-decoration:none;color:#344054;border:1px solid var(--psu-theme-line);border-radius:999px;padding:.45rem .75rem;font-size:.82rem;font-weight:850;background:#fff}.psu-footer-copy{color:#98A2B3;font-size:.8rem;font-weight:850}@media(min-width:860px){.psu-footer-card{grid-template-columns:1.4fr 1fr auto;align-items:center}}.psu-theme-notice{max-width:920px;margin:2rem auto;padding:1rem 1.2rem;background:#fff;border:1px solid #FEC84B;border-radius:18px;color:#92400E}.psu-page-content,.psu-single-post,.psu-blog-index,.psu-archive-list{max-width:980px;margin:2rem auto 4rem;padding:0 1rem}.psu-page-content>h1,.psu-single-post h1,.psu-blog-index h1{font-size:clamp(2rem,5vw,4rem);line-height:1.15;letter-spacing:-.075em;font-weight:950;margin:0 0 1.3rem}.psu-page-content{background:#fff;border:1px solid var(--psu-theme-line);border-radius:28px;box-shadow:var(--psu-theme-shadow);padding:clamp(1rem,3vw,2rem)}.psu-page-content .alignwide{margin-inline:calc(50% - min(700px,50vw))}.psu-page-content .alignfull{margin-inline:calc(50% - 50vw);max-width:100vw}.psu-fallback-hero{max-width:980px;margin:2rem auto;padding:2rem 1rem;text-align:center}.psu-fallback-hero h1{font-size:clamp(2rem,5vw,4rem);letter-spacing:-.07em}.psu-theme-btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;border-radius:999px;background:var(--psu-theme-ink);color:#fff;text-decoration:none;font-weight:900;padding:.65rem 1rem}.psu-blog-index header span{color:var(--psu-theme-primary);font-size:.72rem;font-weight:950;letter-spacing:.14em}.psu-post-list{display:grid;gap:0}.psu-post-row{border-bottom:1px solid var(--psu-theme-line)}.psu-post-row-link{display:grid;grid-template-columns:minmax(0,1fr) 110px;gap:1rem;text-decoration:none;padding:1rem 0}.psu-post-row h2{font-size:1.2rem;line-height:1.55;letter-spacing:-.04em;margin:.25rem 0;font-weight:950}.psu-post-row p{margin:0;color:var(--psu-theme-muted)}.psu-post-row small{color:#98A2B3;font-weight:850}.psu-post-row span{display:block;width:110px;height:90px;border-radius:18px;overflow:hidden;background:#EEF2F7}.psu-post-row img{width:100%;height:100%;object-fit:cover}.psu-single-post{max-width:880px}.psu-single-post header a{text-decoration:none;color:var(--psu-theme-primary);font-weight:900}.psu-single-post header p{color:#98A2B3}.psu-single-cover{border-radius:28px;overflow:hidden;background:#EEF2F7;margin-bottom:1.5rem}.psu-single-cover img{width:100%;display:block}.psu-prose{background:#fff;border:1px solid var(--psu-theme-line);border-radius:28px;padding:clamp(1rem,3vw,2rem);box-shadow:var(--psu-theme-shadow)}.psu-prose p{line-height:2.15;color:#344054}.psu-prose h2,.psu-prose h3{font-weight:950;letter-spacing:-.04em;color:var(--psu-theme-ink)}.nav-links{display:flex;gap:.5rem;margin-top:1.5rem}.nav-links a,.nav-links span{border:1px solid var(--psu-theme-line);background:#fff;border-radius:12px;padding:.5rem .75rem;text-decoration:none;font-weight:850}.screen-reader-text{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:640px){.psu-logo-text small{display:none}.psu-header-inner{padding:.65rem .85rem}.psu-header-btn{display:none}.psu-header-cats{padding-inline:.85rem}.psu-page-content{margin:1rem .85rem;padding:1rem}.psu-post-row-link{grid-template-columns:minmax(0,1fr) 92px}.psu-post-row span{width:92px;height:78px}.psu-footer-card{border-radius:22px}.psu-site-footer{padding-inline:.85rem}}