@font-face {
  font-family: "یکان حمید";
  src: url("/assets/fonts/BYekan.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "تیتر حمید";
  src: url("/assets/fonts/BTitrBd.ttf") format("truetype");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  --bg: #070b18;
  --bg-deep: #040711;
  --surface: #0c1225;
  --surface-raised: #111a32;
  --surface-soft: rgba(16, 24, 46, 0.66);
  --text: #f5f7ff;
  --text-soft: #c7cde0;
  --muted: #8e98b3;
  --line: rgba(157, 177, 225, 0.16);
  --line-strong: rgba(157, 177, 225, 0.28);
  --cyan: #62e8ff;
  --blue: #6888ff;
  --blue-deep: #3b5be8;
  --gold: #f4c56f;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --container: 1180px;
  --header-height: 82px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 104px; }

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
  color: var(--text);
  font-family: "یکان حمید", Tahoma, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.95' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
svg { display: block; }

.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { position: relative; padding: 130px 0; }

.skip-link {
  position: fixed;
  inset-block-start: 12px;
  inset-inline-start: 12px;
  z-index: 999;
  transform: translateY(-160%);
  border-radius: 8px;
  background: var(--cyan);
  color: var(--bg-deep);
  padding: 10px 16px;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

.ambient { position: fixed; z-index: -1; border-radius: 50%; filter: blur(1px); pointer-events: none; }
.ambient-one { width: 480px; height: 480px; inset: -170px -180px auto auto; background: radial-gradient(circle, rgba(78, 115, 255, .16), transparent 70%); }
.ambient-two { width: 600px; height: 600px; inset: 45% auto auto -300px; background: radial-gradient(circle, rgba(54, 217, 246, .08), transparent 70%); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: rgba(7, 11, 24, 0.55);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: border-color .25s ease, background .25s ease, height .25s ease;
}
.site-header.scrolled { border-color: var(--line); background: rgba(7, 11, 24, .88); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 30px; }

.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 205px; }
.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid rgba(98, 232, 255, .34);
  border-radius: 14px 5px 14px 5px;
  background: linear-gradient(145deg, rgba(98, 232, 255, .13), rgba(104, 136, 255, .06));
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: -2px;
  box-shadow: inset 0 0 20px rgba(98,232,255,.04);
}
.brand-copy { display: flex; flex-direction: column; line-height: 1.3; }
.brand-copy strong { font-size: .98rem; font-weight: 760; }
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: .72rem; }

.desktop-nav { display: flex; align-items: center; justify-content: center; gap: clamp(20px, 2.7vw, 38px); margin-inline: auto; }
.desktop-nav a { position: relative; color: var(--text-soft); font-size: .88rem; font-weight: 600; transition: color .2s ease; }
.desktop-nav a::after { content: ""; position: absolute; right: 0; bottom: -10px; width: 0; height: 1px; background: var(--cyan); transition: width .25s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--text); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { width: 100%; }

.header-contact { border: 1px solid var(--line-strong); border-radius: 999px; padding: 9px 18px; color: var(--text); font-size: .84rem; font-weight: 700; transition: border-color .2s ease, background .2s ease; }
.header-contact:hover { border-color: rgba(98,232,255,.54); background: rgba(98,232,255,.07); }
.menu-button { display: none; width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); padding: 0; cursor: pointer; }
.menu-button span { display: block; width: 20px; height: 1.5px; margin: 6px auto; background: var(--text); transition: transform .2s ease; }
.menu-button[aria-expanded="true"] span:first-child { transform: translateY(3.8px) rotate(45deg); }
.menu-button[aria-expanded="true"] span:last-child { transform: translateY(-3.8px) rotate(-45deg); }
.mobile-nav { position: absolute; inset: var(--header-height) 0 auto; border-bottom: 1px solid var(--line); background: rgba(7,11,24,.98); padding: 18px 20px 24px; }
.mobile-nav a { display: block; border-bottom: 1px solid var(--line); padding: 12px 4px; color: var(--text-soft); font-weight: 600; }
.mobile-nav a:last-child { border: 0; color: var(--cyan); }

.hero { min-height: 100svh; display: flex; align-items: center; padding-top: calc(var(--header-height) + 70px); padding-bottom: 70px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.16fr) minmax(360px, .72fr); align-items: center; gap: clamp(50px, 7vw, 100px); }
.eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 34px; direction: ltr; justify-content: flex-end; color: var(--muted); font-family: "Segoe UI", Arial, sans-serif; font-size: .68rem; letter-spacing: .15em; }
.eyebrow-line { width: 52px; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan)); }
.hero-kicker { margin: 0 0 10px; color: var(--cyan); font-size: 1rem; font-weight: 700; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(2.85rem, 5.35vw, 5.65rem); font-weight: 760; line-height: 1.22; letter-spacing: -.055em; }
.hero h1 em { color: transparent; font-style: normal; -webkit-text-stroke: 1px rgba(98,232,255,.9); text-shadow: 0 0 36px rgba(98,232,255,.09); }
.hero-lead { max-width: 680px; margin: 30px 0 0; color: var(--text-soft); font-size: clamp(1.03rem, 1.3vw, 1.18rem); line-height: 2; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 38px; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; border: 1px solid transparent; border-radius: 999px; padding: 11px 22px; font-size: .92rem; font-weight: 750; transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; direction: ltr; transform: rotate(180deg); }
.button-primary { background: var(--cyan); color: var(--bg-deep); box-shadow: 0 12px 34px rgba(98,232,255,.14); }
.button-primary:hover { background: #90efff; box-shadow: 0 16px 42px rgba(98,232,255,.22); }
.button-secondary { border-color: var(--line-strong); background: rgba(255,255,255,.02); color: var(--text); }
.button-secondary:hover { border-color: rgba(255,255,255,.32); background: rgba(255,255,255,.05); }
.hero-attributes { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 30px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: .78rem; }
.hero-attributes li { display: inline-flex; align-items: center; gap: 8px; }
.hero-attributes li span { width: 5px; height: 5px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 10px rgba(104,136,255,.5); }

.hero-system { position: relative; overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius-lg) 10px var(--radius-lg) 10px; background: linear-gradient(155deg, rgba(19,29,57,.9), rgba(8,13,29,.92)); box-shadow: var(--shadow), inset 0 1px rgba(255,255,255,.05); }
.hero-system::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(98,232,255,.08), transparent 32%, transparent 68%, rgba(104,136,255,.07)); pointer-events: none; }
.system-topline { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; gap: 16px; border-bottom: 1px solid var(--line); padding: 16px 20px; color: var(--muted); font-size: .72rem; }
.system-status { display: inline-flex; align-items: center; gap: 7px; color: var(--text-soft); }
.system-status i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px rgba(98,232,255,.8); }
.system-core { position: relative; height: 270px; display: grid; place-items: center; overflow: hidden; }
.system-core::before, .system-core::after { content: ""; position: absolute; background: var(--line); }
.system-core::before { width: 1px; height: 100%; }
.system-core::after { width: 100%; height: 1px; }
.core-orbit { position: absolute; border: 1px solid rgba(98,232,255,.16); border-radius: 50%; }
.orbit-one { width: 190px; height: 190px; animation: breathe 4s ease-in-out infinite; }
.orbit-two { width: 265px; height: 265px; border-style: dashed; border-color: rgba(104,136,255,.14); animation: spin 26s linear infinite; }
.core-label { position: relative; z-index: 1; width: 138px; height: 138px; display: grid; place-content: center; text-align: center; border: 1px solid rgba(98,232,255,.38); border-radius: 50%; background: radial-gradient(circle at 40% 30%, rgba(98,232,255,.18), rgba(9,15,32,.96) 68%); box-shadow: 0 0 60px rgba(98,232,255,.09); }
.core-label small { color: var(--muted); font-size: .68rem; }
.core-label strong { margin-top: 6px; font-size: .92rem; line-height: 1.65; }
.system-stages { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.system-stages li { min-height: 118px; display: grid; grid-template-columns: auto 1fr; align-content: center; column-gap: 10px; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.system-stages li:nth-child(odd) { border-left: 1px solid var(--line); }
.system-stages li:nth-last-child(-n+2) { border-bottom: 0; }
.system-stages li > span { grid-row: 1 / 3; color: var(--cyan); font-family: "Segoe UI", Arial, sans-serif; font-size: .7rem; }
.system-stages strong { font-size: .86rem; }
.system-stages small { color: var(--muted); font-size: .7rem; line-height: 1.7; }
.scroll-cue { position: absolute; right: 50%; bottom: 28px; transform: translateX(50%); display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .68rem; }
.scroll-cue span { width: 1px; height: 30px; background: linear-gradient(var(--cyan), transparent); }

@keyframes breathe { 50% { transform: scale(1.05); opacity: .7; } }
@keyframes spin { to { transform: rotate(360deg); } }

.overline { margin: 0 0 18px; color: var(--cyan); font-size: .74rem; font-weight: 800; letter-spacing: .06em; }
.hero h1, .section h2, .page-hero h1, .article-hero h1, .product-detail-hero h1, .contact-copy h2 { font-family: "تیتر حمید", "یکان حمید", Tahoma, sans-serif; font-weight: 700; letter-spacing: 0; }
.section h2 { margin: 0; font-size: clamp(2rem, 3.6vw, 3.8rem); font-weight: 700; line-height: 1.55; letter-spacing: 0; }
.section-grid { display: grid; grid-template-columns: 70px minmax(280px, .85fr) minmax(320px, 1fr); gap: clamp(35px, 6vw, 80px); align-items: start; }
.section-index { padding-top: 8px; color: var(--muted); font-family: "Segoe UI", Arial, sans-serif; font-size: .72rem; writing-mode: vertical-rl; }
.section-index::after { content: ""; display: inline-block; width: 1px; height: 82px; margin-top: 14px; background: linear-gradient(var(--line-strong), transparent); }
.about-section { border-top: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,.015), transparent 50%); }
.section-heading h2 { max-width: 560px; }
.about-copy { padding-top: 6px; }
.about-copy p { margin: 0 0 18px; color: var(--text-soft); }
.about-copy .large-copy { margin-bottom: 22px; color: var(--text); font-size: clamp(1.25rem, 1.8vw, 1.55rem); font-weight: 560; line-height: 1.9; }
.about-principles { display: grid; gap: 0; margin-top: 40px; border-top: 1px solid var(--line); }
.about-principles article { display: grid; grid-template-columns: 145px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.about-principles strong { font-size: .9rem; }
.about-principles span { color: var(--muted); font-size: .84rem; }
.about-principles a { color: var(--cyan); }

.capabilities-section { background: var(--bg-deep); }
.section-intro { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .58fr); align-items: end; gap: 60px; margin-bottom: 64px; }
.section-intro h2 { max-width: 750px; }
.section-intro > p { max-width: 460px; margin: 0 0 7px; color: var(--muted); }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-right: 1px solid var(--line); }
.capability-card { position: relative; min-height: 375px; padding: 32px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.008); transition: background .3s ease, transform .3s ease; }
.capability-card:hover { z-index: 1; background: linear-gradient(145deg, rgba(98,232,255,.055), rgba(104,136,255,.025)); transform: translateY(-5px); }
.card-number { color: var(--muted); font-family: "Segoe UI", Arial, sans-serif; font-size: .7rem; }
.capability-card h3 { margin: 56px 0 16px; font-size: 1.35rem; line-height: 1.5; }
.capability-card > p { min-height: 84px; margin: 0; color: var(--text-soft); font-size: .9rem; line-height: 1.9; }
.capability-card ul { margin: 26px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); list-style: none; }
.capability-card li { position: relative; margin: 8px 0; padding-right: 14px; color: var(--muted); font-size: .78rem; }
.capability-card li::before { content: ""; position: absolute; right: 0; top: .85em; width: 4px; height: 4px; border-radius: 50%; background: var(--blue); }

.products-section { overflow: hidden; }
.product-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.product-card { position: relative; min-height: 555px; display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-md); background: linear-gradient(145deg, rgba(18,27,52,.68), rgba(8,13,27,.84)); padding: 26px; transition: border-color .3s ease, transform .3s ease, box-shadow .3s ease; }
.product-card::after { content: ""; position: absolute; width: 180px; height: 180px; top: -100px; left: -90px; border: 1px solid rgba(98,232,255,.08); border-radius: 50%; box-shadow: 0 0 70px rgba(98,232,255,.035); }
.product-card:hover { transform: translateY(-5px); border-color: rgba(98,232,255,.32); box-shadow: 0 24px 60px rgba(0,0,0,.18); }
.product-card.featured { grid-column: 1 / -1; min-height: 455px; background: linear-gradient(125deg, rgba(30,50,94,.78), rgba(10,17,35,.92) 62%); }
.product-meta { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding-bottom: 20px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .72rem; }
.product-code { direction: ltr; font-family: "Segoe UI", Arial, sans-serif; letter-spacing: .08em; }
.product-type { color: var(--cyan); }
.product-content { display: grid; grid-template-columns: minmax(180px, .55fr) 1fr; gap: 35px; align-items: end; margin: auto 0; padding: 38px 0; }
.product-content h3 { margin: 0 0 7px; font-size: clamp(1.75rem, 3vw, 2.85rem); line-height: 1.3; }
.product-subtitle { color: var(--muted) !important; font-size: .82rem !important; }
.product-content p { margin: 0; color: var(--text-soft); font-size: .94rem; line-height: 2; }
.product-capabilities { display: grid; gap: 7px; margin: 20px 0 0; padding: 18px 0 0; border-top: 1px solid var(--line); list-style: none; }
.product-capabilities li { position: relative; padding-right: 17px; color: var(--muted); font-size: .78rem; line-height: 1.85; }
.product-capabilities li::before { content: ""; position: absolute; top: .82em; right: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px rgba(98,232,255,.45); }
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; justify-content: flex-start; }
.product-tags span { border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px; color: var(--muted); font-size: .66rem; }
.status-chip { width: fit-content; display: inline-flex; align-items: center; margin-top: 22px; border: 1px solid rgba(244,197,111,.26); border-radius: 999px; background: rgba(244,197,111,.07); color: #f7dca8; padding: 5px 10px; font-size: .68rem; }
.home-product-card { min-height: 490px; }
.home-product-card > h3 { margin: 24px 0 10px; font-family: "تیتر حمید", "یکان حمید", sans-serif; font-size: 2rem; line-height: 1.55; }
.home-product-card > p { margin: 0; color: var(--text-soft); font-size: .92rem; line-height: 2; }
.home-product-card > .product-capabilities { margin-bottom: 28px; }
.home-product-card > .text-link { margin-top: auto; }
.product-footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-top: auto; }
.archive-product-card .product-content h2 { margin: 18px 0 0; font-size: 2.3rem; }
.products-archive { padding-top: 78px; }

.product-detail-hero { padding: 110px 0 72px; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 78% 15%, rgba(98,232,255,.12), transparent 40%), var(--bg); }
.product-detail-hero .back-link { display: inline-block; margin-bottom: 38px; }
.product-detail-hero .status-chip { margin: 0 0 22px; }
.product-detail-hero h1 { margin: 0; font-size: clamp(2.7rem, 6vw, 5.6rem); line-height: 1.45; }
.product-detail-hero .product-tags { margin-top: 28px; }
.product-detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 70px; align-items: start; padding-block: 80px 120px; }
.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.feature-list article { min-height: 170px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface-soft); padding: 24px; }
.feature-list span { color: var(--cyan); font-size: .72rem; }
.feature-list p { margin: 26px 0 0; color: var(--text-soft); line-height: 1.95; }
.product-aside { position: sticky; top: 28px; display: grid; gap: 18px; border: 1px solid var(--line-strong); border-radius: 22px; background: linear-gradient(145deg, rgba(18,27,52,.82), rgba(8,13,27,.92)); padding: 27px; }
.product-aside > div { border-bottom: 1px solid var(--line); padding-bottom: 18px; }
.product-aside strong { color: var(--cyan); font-size: .78rem; }
.product-aside p, .product-aside li { color: var(--muted); font-size: .82rem; line-height: 1.9; }
.product-aside ul { display: grid; gap: 5px; margin: 12px 0 0; padding-right: 20px; }
.phone-text-link { color: var(--cyan); text-align: center; font-size: 1rem; }

.education-section { border-top: 1px solid var(--line); background: var(--bg-deep); }
.education-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.education-card { min-height: 355px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius-md); background: linear-gradient(145deg, rgba(18,27,52,.66), rgba(8,13,27,.88)); padding: 28px; transition: transform .25s ease, border-color .25s ease; }
.education-card:hover { transform: translateY(-4px); border-color: rgba(98,232,255,.32); }
.education-date { margin: 0 0 25px; color: var(--cyan); font-size: .72rem; }
.education-card h2, .education-card h3 { margin: 0 0 16px; font-size: 1.25rem; line-height: 1.7; }
.education-card h2 a:hover, .education-card h3 a:hover { color: var(--cyan); }
.education-card > p:not(.education-date) { margin: 0 0 20px; color: var(--muted); font-size: .85rem; line-height: 1.95; }
.education-tags { display: flex; flex-wrap: wrap; gap: 7px; margin: auto 0 22px; }
.education-tags span { border-radius: 999px; background: rgba(98,232,255,.07); color: var(--text-soft); padding: 4px 9px; font-size: .66rem; }
.text-link, .back-link { color: var(--cyan); font-size: .8rem; font-weight: 700; }
.text-link span { display: inline-block; margin-right: 6px; transition: transform .2s ease; }
.text-link:hover span { transform: translateX(-4px); }
.education-loading, .empty-state { grid-column: 1 / -1; margin: 0; border: 1px dashed var(--line-strong); border-radius: var(--radius-md); color: var(--muted); padding: 38px; text-align: center; }
.section-action { display: flex; justify-content: center; margin-top: 38px; }

.research-section { border-top: 1px solid var(--line); background: linear-gradient(145deg, rgba(104,136,255,.055), transparent 48%); }
.research-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(330px, .7fr); gap: 70px; align-items: center; }
.research-copy > p:not(.overline) { max-width: 720px; margin: 26px 0 0; color: var(--text-soft); font-size: 1rem; line-height: 2.1; }
.profile-links { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 34px; }
.research-stats { display: grid; border: 1px solid var(--line-strong); border-radius: 24px 8px 24px 8px; background: var(--surface-soft); }
.research-stats article { display: grid; gap: 5px; border-bottom: 1px solid var(--line); padding: 25px; }
.research-stats article:last-child { border: 0; }
.research-stats strong { color: var(--cyan); font-size: .72rem; }
.research-stats span { font-size: 1.05rem; font-weight: 700; }
.research-stats small { color: var(--muted); }
.profile-facts { padding-block: 78px; }
.facts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.facts-grid article { border: 1px solid var(--line); border-radius: 18px; background: var(--surface-soft); padding: 25px; }
.facts-grid strong { color: var(--cyan); font-size: .75rem; }
.facts-grid p { margin: 16px 0 0; color: var(--text-soft); }
.publications-section { border-top: 1px solid var(--line); background: var(--bg-deep); }
.publication-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.publication-card { min-height: 315px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(145deg, rgba(18,27,52,.66), rgba(8,13,27,.88)); padding: 26px; }
.publication-meta { display: flex; justify-content: space-between; gap: 20px; color: var(--cyan); font-size: .72rem; }
.publication-card h2 { margin: 34px 0 14px; font-family: "یکان حمید", Tahoma, sans-serif; font-size: 1.25rem; line-height: 1.9; }
.publication-card p { margin: 0 0 24px; color: var(--muted); font-size: .82rem; }
.publication-card .text-link { margin-top: auto; }

.compact-header { position: relative; background: var(--bg); }
.page-hero, .article-hero { padding: 110px 0 70px; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 72% 20%, rgba(104,136,255,.14), transparent 42%), var(--bg);
}
.narrow { max-width: 850px; }
.page-hero h1, .article-hero h1 { max-width: 900px; margin: 0; font-size: clamp(2.25rem, 5vw, 4.4rem); line-height: 1.45; letter-spacing: -.035em; }
.page-hero > .container > p:last-child { max-width: 680px; margin: 24px 0 0; color: var(--text-soft); font-size: 1.05rem; }
.education-archive { padding-top: 78px; }
.article-hero .back-link { display: inline-block; margin-bottom: 38px; }
.article-hero .education-date { margin-bottom: 16px; }
.article-summary { max-width: 760px; margin: 26px 0 24px; color: var(--text-soft); font-size: 1.1rem; line-height: 2; }
.article-hero .education-tags { margin: 0; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: 70px; align-items: start; padding-block: 75px 110px; }
.article-body { max-width: 790px; color: var(--text-soft); font-size: 1.02rem; line-height: 2.15; }
.article-body p { margin: 0 0 28px; }
.article-body h2 { margin: 62px 0 20px; color: var(--text); font-size: 1.8rem; line-height: 1.6; }
.article-body h3 { margin: 48px 0 18px; color: var(--text); font-size: 1.35rem; }
.article-body ul { display: grid; gap: 10px; margin: 22px 0 34px; padding-right: 24px; }
.article-body li::marker { color: var(--cyan); }
.article-aside { position: sticky; top: 30px; display: grid; gap: 7px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface-soft); padding: 24px; }
.article-aside strong { color: var(--muted); font-size: .72rem; }
.article-aside span { font-weight: 800; }
.article-aside a { margin-top: 16px; border-top: 1px solid var(--line); color: var(--cyan); padding-top: 16px; font-size: .76rem; }

.architecture-section { padding-top: 40px; }
.architecture-panel { overflow: hidden; border: 1px solid rgba(98,232,255,.2); border-radius: var(--radius-lg) 10px var(--radius-lg) 10px; background: linear-gradient(135deg, rgba(29,53,101,.66), rgba(10,18,37,.94) 58%, rgba(17,29,60,.72)); box-shadow: var(--shadow); }
.architecture-head { padding: 58px 58px 48px; }
.architecture-head h2 { max-width: 850px; }
.architecture-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-strong); }
.architecture-grid article { min-height: 235px; padding: 30px; border-left: 1px solid var(--line); }
.architecture-grid article:last-child { border-left: 0; }
.architecture-grid article > span { color: var(--cyan); font-family: "Segoe UI", Arial, sans-serif; font-size: .7rem; }
.architecture-grid h3 { margin: 50px 0 12px; font-size: 1.12rem; }
.architecture-grid p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.85; }

.approach-section { background: linear-gradient(180deg, transparent, rgba(2,5,13,.72)); }
.approach-steps { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.approach-steps li { display: grid; grid-template-columns: 58px 1fr; gap: 24px; min-height: 210px; padding: 34px 28px; border-bottom: 1px solid var(--line); }
.approach-steps li:nth-child(odd) { border-left: 1px solid var(--line); }
.step-no { color: var(--cyan); font-family: "Segoe UI", Arial, sans-serif; font-size: .72rem; }
.approach-steps h3 { margin: 0 0 14px; font-size: 1.25rem; }
.approach-steps p { max-width: 430px; margin: 0; color: var(--muted); font-size: .9rem; }

.contact-section { padding: 0 0 80px; background: var(--bg-deep); }
.contact-panel { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(330px, .62fr); align-items: center; gap: 70px; overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius-lg) 10px var(--radius-lg) 10px; background: linear-gradient(135deg, rgba(98,232,255,.09), rgba(104,136,255,.07) 42%, rgba(12,18,37,.86)); padding: 65px; }
.contact-copy h2 { font-size: clamp(1.9rem, 3.35vw, 3.35rem); }
.contact-copy > p:not(.overline) { max-width: 720px; margin: 24px 0 0; color: var(--text-soft); line-height: 2; }
.contact-actions { display: grid; gap: 12px; }
.email-link { display: flex; align-items: center; gap: 16px; border: 1px solid var(--line-strong); border-radius: 18px; background: rgba(4,8,18,.42); padding: 15px; transition: border-color .2s ease, transform .2s ease; }
.email-link:hover { transform: translateY(-2px); border-color: rgba(98,232,255,.42); }
.email-icon { width: 48px; height: 48px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 14px; background: var(--cyan); color: var(--bg-deep); }
.email-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.email-link > span:last-child { min-width: 0; display: flex; flex-direction: column; }
.email-link small { color: var(--muted); font-size: .7rem; }
.email-link strong { overflow-wrap: anywhere; font-family: "Segoe UI", Arial, sans-serif; font-size: .9rem; font-weight: 620; }
.copy-button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--text-soft); cursor: pointer; font-size: .78rem; transition: color .2s ease, border-color .2s ease; }
.copy-button:hover { color: var(--text); border-color: var(--line-strong); }
.copy-button svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.7; }

.site-footer { border-top: 1px solid var(--line); background: var(--bg-deep); padding: 36px 0; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px; }
.footer-brand { display: inline-flex; align-items: center; gap: 12px; }
.footer-brand > span:last-child { display: flex; flex-direction: column; }
.footer-brand strong { font-size: .9rem; }
.footer-brand small { color: var(--muted); font-size: .7rem; }
.footer-meta { display: flex; align-items: center; gap: 14px; color: var(--muted); font-family: "Segoe UI", Tahoma, sans-serif; font-size: .72rem; }
.footer-meta span { width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.footer-meta a:hover { color: var(--cyan); }
.site-footer p { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: .68rem; }

.toast { position: fixed; z-index: 300; right: 50%; bottom: 26px; transform: translate(50%, 18px); pointer-events: none; opacity: 0; border: 1px solid rgba(98,232,255,.28); border-radius: 999px; background: rgba(10,17,34,.94); color: var(--text); padding: 9px 16px; box-shadow: var(--shadow); font-size: .78rem; transition: opacity .25s ease, transform .25s ease; }
.toast.show { transform: translate(50%, 0); opacity: 1; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .72s ease, transform .72s cubic-bezier(.2,.65,.3,1); }
.js .reveal.visible { opacity: 1; transform: none; }
.delay-one { transition-delay: .1s; }
.delay-two { transition-delay: .18s; }

*:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }

@media (max-width: 1080px) {
  .desktop-nav { gap: 18px; }
  .desktop-nav a { font-size: .8rem; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) 380px; gap: 44px; }
  .hero h1 { font-size: clamp(2.65rem, 5vw, 4.45rem); }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .architecture-grid { grid-template-columns: repeat(2, 1fr); }
  .architecture-grid article { border-bottom: 1px solid var(--line); }
  .architecture-grid article:nth-child(even) { border-left: 0; }
  .architecture-grid article:nth-last-child(-n+2) { border-bottom: 0; }
  .contact-panel { padding: 48px; gap: 42px; }
  .education-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail-layout { gap: 42px; grid-template-columns: minmax(0, 1fr) 300px; }
}

@media (max-width: 860px) {
  :root { --header-height: 72px; }
  .section { padding: 100px 0; }
  .container { width: min(calc(100% - 32px), var(--container)); }
  .desktop-nav, .header-contact { display: none; }
  .menu-button { display: block; margin-right: auto; }
  .hero { min-height: auto; padding-top: 135px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-content { max-width: 720px; }
  .hero-system { max-width: 620px; width: 100%; margin-inline: auto; }
  .scroll-cue { display: none; }
  .section-grid { grid-template-columns: 40px 1fr; gap: 30px; }
  .about-copy { grid-column: 2; }
  .section-intro { grid-template-columns: 1fr; gap: 24px; margin-bottom: 48px; }
  .section-intro > p { max-width: 650px; }
  .product-content { grid-template-columns: 1fr; gap: 20px; align-items: start; }
  .contact-panel { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; gap: 38px; }
  .article-aside { position: static; max-width: 420px; }
  .research-grid { grid-template-columns: 1fr; gap: 42px; }
  .research-stats { grid-template-columns: repeat(3, 1fr); }
  .research-stats article { border-bottom: 0; border-left: 1px solid var(--line); }
  .research-stats article:last-child { border-left: 0; }
  .product-detail-layout { grid-template-columns: 1fr; }
  .product-aside { position: static; }
  .compact-contact { display: inline-flex; margin-right: auto; }
}

@media (max-width: 650px) {
  body { background-size: 36px 36px; }
  .container { width: min(calc(100% - 24px), var(--container)); }
  .section { padding: 82px 0; }
  .brand-copy small { display: none; }
  .brand { min-width: 0; }
  .hero { padding-top: 120px; padding-bottom: 54px; }
  .eyebrow { justify-content: flex-start; font-size: .59rem; }
  .eyebrow-line { width: 34px; }
  .hero h1 { font-size: clamp(2.35rem, 12vw, 3.4rem); letter-spacing: -.045em; }
  .hero-lead { margin-top: 24px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .hero-attributes { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .hero-system { border-radius: 22px 7px 22px 7px; }
  .system-core { height: 230px; }
  .orbit-one { width: 165px; height: 165px; }
  .orbit-two { width: 225px; height: 225px; }
  .system-stages { grid-template-columns: 1fr; }
  .system-stages li, .system-stages li:nth-child(odd) { min-height: 94px; border-left: 0; border-bottom: 1px solid var(--line); }
  .system-stages li:nth-last-child(2) { border-bottom: 1px solid var(--line); }
  .section-grid { grid-template-columns: 1fr; }
  .section-index { display: none; }
  .about-copy { grid-column: 1; }
  .about-principles article { grid-template-columns: 1fr; gap: 4px; }
  .capability-grid { grid-template-columns: 1fr; border-right: 0; }
  .capability-card { min-height: auto; border-right: 1px solid var(--line); padding: 25px; }
  .capability-card h3 { margin-top: 38px; }
  .capability-card > p { min-height: 0; }
  .product-list { grid-template-columns: 1fr; }
  .product-card, .product-card.featured { grid-column: auto; min-height: 0; padding: 22px; }
  .product-content { margin: 24px 0; padding: 0; }
  .product-content h3 { font-size: 1.85rem; }
  .home-product-card { min-height: 0; }
  .product-footer { align-items: flex-start; flex-direction: column; }
  .architecture-section { padding-top: 10px; }
  .architecture-panel { border-radius: 22px 7px 22px 7px; }
  .architecture-head { padding: 35px 25px 30px; }
  .architecture-grid { grid-template-columns: 1fr; }
  .architecture-grid article, .architecture-grid article:nth-child(even), .architecture-grid article:nth-last-child(-n+2) { min-height: 190px; border-left: 0; border-bottom: 1px solid var(--line); padding: 25px; }
  .architecture-grid article:last-child { border-bottom: 0; }
  .architecture-grid h3 { margin-top: 32px; }
  .approach-steps { grid-template-columns: 1fr; }
  .approach-steps li, .approach-steps li:nth-child(odd) { min-height: 185px; border-left: 0; }
  .contact-section { padding-bottom: 38px; }
  .contact-panel { gap: 34px; border-radius: 22px 7px 22px 7px; padding: 34px 22px; }
  .email-link { align-items: flex-start; }
  .email-link strong { font-size: .76rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-meta { flex-wrap: wrap; gap: 9px; }
  .education-grid { grid-template-columns: 1fr; }
  .education-card { min-height: 0; }
  .research-stats { grid-template-columns: 1fr; }
  .research-stats article, .research-stats article:last-child { border-left: 0; border-bottom: 1px solid var(--line); }
  .research-stats article:last-child { border-bottom: 0; }
  .facts-grid, .publication-grid, .feature-list { grid-template-columns: 1fr; }
  .publication-card, .feature-list article { min-height: 0; }
  .product-detail-hero { padding: 78px 0 52px; }
  .product-detail-layout { padding-block: 55px 82px; }
  .profile-links { align-items: stretch; flex-direction: column; }
  .profile-links .button { width: 100%; }
  .page-hero, .article-hero { padding: 78px 0 52px; }
  .article-layout { padding-block: 48px 78px; }
  .article-body { font-size: .96rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .ambient, .scroll-cue, .hero-actions, .copy-button, .toast { display: none !important; }
  body { background: white; color: black; }
  .section { padding: 36px 0; }
  .hero { min-height: auto; padding-top: 20px; }
  .hero-system, .capability-card, .product-card, .architecture-panel, .contact-panel { background: white; color: black; border-color: #bbb; box-shadow: none; }
  p, li, small, .product-subtitle { color: #333 !important; }
}