/* ═══════════════════════════════════════════════════
   FIDCHEM — Main Stylesheet
   Edit colours in :root to change the entire site theme
   ═══════════════════════════════════════════════════ */

:root {
  /* Palette from fidchem.com — cobalt blue brand */
  --ink:        #0f172a;   /* dark navy (headings) */
  --ink2:       #364151;   /* dark gray-blue (body text) */
  --paper:      #ffffff;   /* white */
  --paper2:     #e7f6ff;   /* light blue tint (subtle backgrounds) */
  --accent:     #0067ff;   /* primary cobalt blue */
  --accent2:    #004080;   /* dark cobalt */
  --plasma:     #3385ff;   /* light cobalt (highlights) */
  --rule:       rgba(15,23,42,0.10);
  --rule-s:     rgba(15,23,42,0.22);
  --mono:       'Space Mono', monospace;
  --sans:       'DM Sans', sans-serif;
  --nav-h:      64px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img { display: block; max-width: 100%; }
a { color: inherit; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  overflow-x: hidden;
}

/* ── NOISE TEXTURE ── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.5;
}

/* ══════════════════════════════════════════════
   NAVIGATION
══════════════════════════════════════════════ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  height: var(--nav-h);
  padding: 0 48px;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  gap: 40px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  margin-right: auto;
}
.nav-logo-img {
  height: 38px;
  width: 38px;
  object-fit: contain;
  flex-shrink: 0;
}
.nav-logo-text {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.nav-logo-text em { font-style: normal; color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  opacity: 0.55;
  transition: opacity 0.2s;
}
.nav-links a:hover { opacity: 1; }

.nav-cta {
  opacity: 1 !important;
  color: var(--paper) !important;
  background: var(--ink);
  padding: 9px 18px;
  border-radius: 2px;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--accent2) !important; }

.lang-switch {
  display: flex;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.lang-switch a {
  text-decoration: none;
  opacity: 0.35;
  transition: opacity 0.2s;
  padding: 4px 6px;
}
.lang-switch a:hover,
.lang-switch a.active { opacity: 1; }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--ink);
  transition: transform 0.2s;
}

/* ══════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════ */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 26px;
  border-radius: 2px;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary {
  color: var(--paper);
  background: var(--ink);
}
.btn-primary:hover { background: var(--accent2); transform: translateY(-1px); }

.btn-secondary {
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--rule-s);
}
.btn-secondary:hover { border-color: var(--ink); transform: translateY(-1px); }

/* ══════════════════════════════════════════════
   HERO
══════════════════════════════════════════════ */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
  padding-top: var(--nav-h);
}

.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 64px 80px 48px;
  border-right: 1px solid var(--rule);
}

.hero-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: fadeUp 0.7s 0.1s ease forwards;
}
.hero-tag::before { content:''; width:24px; height:1px; background:var(--accent); display:block; }

.hero-h1 {
  font-family: var(--mono);
  font-size: clamp(38px, 4.5vw, 60px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeUp 0.7s 0.2s ease forwards;
}
.hero-h1 em { font-style: normal; color: var(--accent); }

.hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(15,23,42,0.6);
  max-width: 480px;
  margin-bottom: 48px;
  font-weight: 300;
  opacity: 0;
  animation: fadeUp 0.7s 0.3s ease forwards;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.7s 0.4s ease forwards;
}

.hero-right {
  position: relative;
  background: var(--ink) url('/img/hero-bg.jpg') center/cover;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 48px;
  overflow: hidden;
}

.plasma-bg { position: absolute; inset: 0; }

@keyframes plasma-pulse {
  0%,100% { opacity: 0.9; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.06); }
}
.plasma-pulse { animation: plasma-pulse 5s ease-in-out infinite; }
.plasma-pulse--delay { animation-delay: -2s; }

.tech-quad {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  width: 100%;
  max-width: 440px;
}
/* 5th card: center it spanning both columns */
.tech-quad-card:nth-child(5) {
  grid-column: 1 / -1;
  justify-self: center;
  width: calc(50% - 1px);
}

.tech-quad-card {
  display: block;
  text-decoration: none;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  padding: 28px 22px;
  transition: background 0.25s, border-color 0.25s;
}
.tech-quad-card:hover {
  background: rgba(0,103,255,0.10);
  border-color: rgba(0,103,255,0.35);
}

.tech-quad-code {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.tech-quad-desc {
  font-family: var(--mono);
  font-size: 10px;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.05em;
  line-height: 1.5;
}

/* ══════════════════════════════════════════════
   STATS BAR
══════════════════════════════════════════════ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.stat {
  padding: 40px 48px;
  border-right: 1px solid var(--rule);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: var(--mono);
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 6px;
  color: var(--ink);
}
.stat-num span { color: var(--accent); }
.stat-label { font-size: 13px; color: rgba(15,23,42,0.5); font-weight: 300; }

/* ══════════════════════════════════════════════
   SECTION LAYOUT
══════════════════════════════════════════════ */
.section-about,
.section-header-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--rule);
}

.section-label {
  padding: 64px 32px;
  border-right: 1px solid var(--rule);
  display: flex;
  align-items: center;
}
.section-label-text {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(15,23,42,0.35);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.section-content { padding: 72px 64px; }

.section-h2 {
  font-family: var(--mono);
  font-size: clamp(22px, 2.5vw, 34px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 24px;
}

.section-body {
  font-size: 16px;
  line-height: 1.85;
  color: rgba(15,23,42,0.6);
  font-weight: 300;
  max-width: 680px;
}

/* ══════════════════════════════════════════════
   TECHNOLOGIES GRID
══════════════════════════════════════════════ */
.section-tech { border-bottom: 1px solid var(--rule); }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.tech-item {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: 56px 64px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
  overflow: hidden;
  transition: background 0.2s;
}
.tech-item:nth-child(2n) { border-right: none; }
/* 5 technologies: items 4+5 are last two rows — only 5 has no bottom border;
   item 5 alone in its row — also remove right border */
.tech-item:nth-child(5) { border-bottom: none; border-right: none; }
.tech-item:hover { background: var(--paper2); }

.tech-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s;
}
.tech-item:hover::before { transform: scaleY(1); }

.tech-item-code {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 4px;
}
.tech-item-full {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.tech-item-desc {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(15,23,42,0.58);
  font-weight: 300;
  max-width: 380px;
}
.tech-item-arrow {
  position: absolute;
  bottom: 28px; right: 36px;
  font-family: var(--mono);
  font-size: 18px;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.2s, transform 0.2s;
}
.tech-item:hover .tech-item-arrow { opacity: 1; transform: translateX(0); }

/* ══════════════════════════════════════════════
   APPLICATIONS GRID
══════════════════════════════════════════════ */
.section-apps { border-bottom: 1px solid var(--rule); }

.apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.app-item {
  padding: 48px 40px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  transition: background 0.2s;
  cursor: default;
}
.app-item:nth-child(3n) { border-right: none; }
.app-item:nth-child(4),
.app-item:nth-child(5),
.app-item:nth-child(6) { border-bottom: none; }
.app-item:hover { background: var(--paper2); }

.app-img-wrap {
  width: calc(100% + 80px);
  margin: -48px -40px 28px;
  overflow: hidden;
  height: 180px;
}
.app-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.35) brightness(0.92);
  transition: filter 0.3s, transform 0.3s;
}
.app-item:hover .app-img { filter: grayscale(0) brightness(1); transform: scale(1.03); }

.app-icon { font-size: 26px; margin-bottom: 14px; filter: grayscale(1); transition: filter 0.2s; }
.app-item:hover .app-icon { filter: none; }
.app-title {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}
.app-desc { font-size: 13px; line-height: 1.7; color: rgba(15,23,42,0.55); font-weight: 300; }
.app-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 16px; }
.app-tag {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent2);
  background: rgba(0,103,255,0.07);
  padding: 4px 8px;
  border-radius: 2px;
}

/* ══════════════════════════════════════════════
   AI CONSULTANT
══════════════════════════════════════════════ */
.section-ai {
  background: var(--ink);
  color: var(--paper);
}
.ai-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.ai-left {
  padding: 80px 64px;
  border-right: 1px solid rgba(255,255,255,0.08);
}
.ai-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ai-tag::before { content:''; width:24px; height:1px; background:var(--accent); display:block; }
.ai-h2 {
  font-family: var(--mono);
  font-size: clamp(22px, 2.5vw, 34px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 20px;
}
.ai-h2 em { font-style: normal; color: var(--accent); }
.ai-desc {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
  font-weight: 300;
  margin-bottom: 32px;
}
.ai-features { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.ai-features li {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  display: flex;
  align-items: center;
  gap: 12px;
}
.ai-features li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.ai-right { padding: 64px 48px; display: flex; flex-direction: column; }

/* Chat widget */
.chat-window {
  flex: 1;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 4px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 280px;
  margin-bottom: 14px;
  overflow-y: auto;
}
.chat-msg { display: flex; flex-direction: column; gap: 5px; max-width: 82%; }
.chat-msg.ai { align-self: flex-start; }
.chat-msg.user { align-self: flex-end; }
.chat-msg-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.28);
}
.chat-msg-text {
  font-size: 13px;
  line-height: 1.65;
  font-weight: 300;
  padding: 13px 16px;
  border-radius: 2px;
}
.chat-msg.ai .chat-msg-text {
  background: rgba(255,255,255,0.07);
  color: rgba(255,255,255,0.82);
  border: 1px solid rgba(255,255,255,0.07);
}
.chat-msg.user .chat-msg-text {
  background: rgba(0,103,255,0.10);
  color: rgba(255,255,255,0.9);
  border: 1px solid rgba(0,103,255,0.18);
}
.chat-input-row { display: flex; gap: 8px; }
.chat-input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.11);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 13px;
  padding: 12px 16px;
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s;
}
.chat-input:focus { border-color: rgba(0,103,255,0.45); }
.chat-input::placeholder { color: rgba(255,255,255,0.22); }
.chat-send {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--accent);
  border: none;
  padding: 12px 20px;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.2s;
}
.chat-send:hover { background: var(--accent2); }
.chat-send:disabled { opacity: 0.5; cursor: wait; }
.chat-legal {
  font-size: 11px;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.18);
  margin-top: 10px;
}
.chat-legal a { color: rgba(255,255,255,0.3); }

/* ══════════════════════════════════════════════
   TECH GRID — ICON
══════════════════════════════════════════════ */
.tech-item-icon-wrap {
  margin-bottom: 20px;
}
.tech-item-icon {
  width: 64px;
  height: 64px;
  object-fit: contain;
  opacity: 0.85;
  transition: opacity 0.2s;
}
.tech-item:hover .tech-item-icon { opacity: 1; }

/* ══════════════════════════════════════════════
   TECHNOLOGY SINGLE PAGE
══════════════════════════════════════════════ */
.tech-page { padding-top: var(--nav-h); }
.tech-page-header {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--rule);
  background: var(--ink);
  color: var(--paper);
}
.tech-page-header .section-label { border-right: 1px solid rgba(255,255,255,0.1); }
.tech-page-header .section-label-text { color: rgba(255,255,255,0.3); }
.tech-page-hero { padding: 72px 64px; }
.tech-page-code {
  font-family: var(--mono);
  font-size: 52px;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--accent);
  margin-bottom: 8px;
}
.tech-page-title {
  font-family: var(--mono);
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.tech-page-summary {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(255,255,255,0.55);
  font-weight: 300;
  max-width: 600px;
  margin-bottom: 24px;
}
.tech-page-tags { display: flex; gap: 8px; flex-wrap: wrap; }

/* Tech single page icon in header */
.tech-page-icon-wrap { margin-bottom: 16px; }
.tech-page-icon {
  width: 72px;
  height: 72px;
  object-fit: contain;
  filter: brightness(0) invert(1) opacity(0.7);
}

/* Tech single page content photo */
.tech-page-photo-wrap {
  margin-bottom: 32px;
  border-radius: 4px;
  overflow: hidden;
}
.tech-page-photo {
  width: 100%;
  height: auto;
  display: block;
}

.tech-page-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0;
}
.tech-page-content {
  padding: 64px 64px;
  border-right: 1px solid var(--rule);
  max-width: 720px;
}
.tech-page-content h2 {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  margin: 40px 0 14px;
  color: var(--ink);
}
.tech-page-content h2:first-child { margin-top: 0; }
.tech-page-content p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(15,23,42,0.65);
  font-weight: 300;
  margin-bottom: 16px;
}
.tech-page-content ul {
  margin: 0 0 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tech-page-content li {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(15,23,42,0.65);
  font-weight: 300;
}
.tech-page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 13px;
}
.tech-page-content th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  padding: 10px 16px;
  border-bottom: 2px solid var(--rule-s);
  color: rgba(15,23,42,0.5);
}
.tech-page-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  color: rgba(15,23,42,0.7);
}
.tech-page-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

.tech-page-aside { padding: 48px 32px; }
.aside-block { margin-bottom: 36px; }
.aside-title {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(15,23,42,0.35);
  margin-bottom: 14px;
}
.aside-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.aside-list li { font-size: 13px; color: rgba(15,23,42,0.65); }
.aside-list--links a {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  color: rgba(15,23,42,0.5);
  transition: color 0.2s;
}
.aside-list--links a:hover,
.aside-list--links a.active { color: var(--accent); }

/* ══════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════ */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.5);
  padding: 64px 48px 48px;
  border-top: 1px solid rgba(255,255,255,0.07);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--paper);
  margin-bottom: 14px;
}
.footer-logo-img {
  height: 48px;
  width: 48px;
  object-fit: contain;
  flex-shrink: 0;
  filter: brightness(0) invert(1) opacity(0.9);
}
.footer-logo-text {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
}
.footer-logo-text em { font-style: normal; color: var(--accent); }
.footer-tagline {
  font-size: 13px;
  line-height: 1.7;
  font-weight: 300;
  color: rgba(255,255,255,0.38);
  margin-bottom: 20px;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  margin-bottom: 8px;
}
.footer-contact-item a { text-decoration: none; transition: color 0.2s; }
.footer-contact-item a:hover { color: var(--accent); }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.footer-col-title {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.28);
  margin-bottom: 18px;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-copy, .footer-policy {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.55);
}
.footer-policy { text-decoration: none; transition: color 0.2s; }
.footer-policy:hover { color: var(--accent); }
.footer-legal-links { display: flex; gap: 20px; align-items: center; }

/* ══════════════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ══════════════════════════════════════════════
   DOCUMENT PAGE (GEP, Privacy Policy, etc.)
══════════════════════════════════════════════ */
.doc-page { padding-top: var(--nav-h); }

.doc-header {
  display: grid;
  grid-template-columns: 220px 1fr;
  border-bottom: 1px solid var(--rule);
}
.doc-header-inner {
  padding: 72px 80px 56px;
  border-left: 1px solid var(--rule);
}
.doc-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 8px;
}
.doc-subtitle {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.doc-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--accent);
  padding: 10px 20px;
  transition: background 0.2s, color 0.2s;
}
.doc-download:hover { background: var(--accent); color: var(--paper); }

.doc-body {
  max-width: 820px;
  margin: 0 auto;
  padding: 72px 80px 100px;
}
.doc-body h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin: 48px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}
.doc-body h2:first-child { margin-top: 0; }
.doc-body h3 {
  font-size: 14px;
  font-weight: 700;
  font-family: var(--mono);
  color: var(--ink);
  margin: 28px 0 10px;
}
.doc-body p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(15,23,42,0.72);
  margin-bottom: 16px;
}
.doc-body ul {
  margin: 0 0 16px 0;
  padding-left: 0;
  list-style: none;
}
.doc-body ul li {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(15,23,42,0.72);
  padding-left: 20px;
  position: relative;
  margin-bottom: 4px;
}
.doc-body ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
.doc-body hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 48px 0 24px;
}
.doc-body strong { color: var(--ink); font-weight: 700; }
.doc-body a { color: var(--accent); text-decoration: none; }
.doc-body a:hover { text-decoration: underline; }

/* ══════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .site-nav { padding: 0 24px; gap: 16px; }
  .hero-left { padding: 64px 32px 64px 24px; }
  .tech-item, .section-content { padding: 48px 32px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--paper); flex-direction: column; border-bottom: 1px solid var(--rule); padding: 24px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-burger { display: flex; }
  .lang-switch { margin-left: 0; }

  .hero { grid-template-columns: 1fr; }
  .hero-right { display: none; }
  .hero-left { padding: 56px 24px; border-right: none; min-height: calc(100vh - var(--nav-h)); }

  .stats-bar { grid-template-columns: 1fr 1fr; }
  .stat { padding: 28px 24px; }
  .stat:nth-child(2) { border-right: none; }

  .section-about, .section-header-row { grid-template-columns: 1fr; }
  .section-label { display: none; }
  .section-content { padding: 48px 24px; }

  .tech-grid { grid-template-columns: 1fr; }
  .tech-item { border-right: 1px solid var(--rule) !important; border-bottom: 1px solid var(--rule) !important; padding: 40px 24px; }
  .tech-item:last-child { border-bottom: none !important; }

  .apps-grid { grid-template-columns: 1fr 1fr; }
  .app-item:nth-child(3n) { border-right: 1px solid var(--rule); }
  .app-item:nth-child(2n) { border-right: none; }
  .app-item:nth-child(5), .app-item:nth-child(6) { border-bottom: none; }
  .app-item { padding: 32px 20px; }
  .app-img-wrap { width: calc(100% + 40px); margin: -32px -20px 20px; height: 140px; }

  .ai-inner { grid-template-columns: 1fr; }
  .ai-left { padding: 56px 24px; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .ai-right { padding: 40px 24px; }

  .tech-page-header { grid-template-columns: 1fr; }
  .tech-page-header .section-label { display: none; }
  .tech-page-hero { padding: 48px 24px; }
  .tech-page-body { grid-template-columns: 1fr; }
  .tech-page-content { padding: 40px 24px; border-right: none; max-width: 100%; }
  .tech-page-aside { padding: 32px 24px; border-top: 1px solid var(--rule); }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 24px; }
  .site-footer { padding: 48px 0 0; }
  .footer-bottom { flex-direction: column; gap: 8px; padding: 20px 24px; text-align: center; }

  .doc-header { grid-template-columns: 1fr; }
  .doc-header .section-label { display: none; }
  .doc-header-inner { padding: 40px 24px 32px; border-left: none; }
  .doc-body { padding: 40px 24px 64px; }
}