/* =====================
   ЭЛЕКТРОВОЛНА — CSS
   ===================== */

:root {
  --bg: #080c14;
  --bg2: #0e1520;
  --bg3: #141d2b;
  --surface: #1a2436;
  --border: rgba(0,200,255,0.12);
  --accent: #00c8ff;
  --accent2: #00ffaa;
  --accent3: #7b5cff;
  --text: #e8f0f8;
  --text-dim: #7a92b0;
  --text-muted: #4a6080;
  --font: 'Geologica', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 32px rgba(0,200,255,0.08);
  --shadow-lg: 0 8px 64px rgba(0,200,255,0.14);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* SELECTION */
::selection { background: rgba(0,200,255,0.25); color: white; }

/* CONTAINER */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========= HEADER ========= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  background: rgba(8,12,20,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: 1.25rem;
}

.logo-wave {
  font-size: 1.6rem;
  color: var(--accent);
  animation: pulse 3s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.logo-text strong { color: var(--accent); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 400;
  padding: 6px 14px;
  border-radius: 8px;
  transition: var(--transition);
  letter-spacing: 0.01em;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: rgba(0,200,255,0.08);
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========= HERO ========= */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

#waveCanvas {
  width: 100%;
  height: 100%;
  opacity: 0.35;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 50%, rgba(0,200,255,0.07) 0%, transparent 70%),
              linear-gradient(180deg, transparent 60%, var(--bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 100px;
  padding-bottom: 80px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,200,255,0.1);
  border: 1px solid rgba(0,200,255,0.25);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
  animation: fadeInDown 0.6s ease both;
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent2);
  border-radius: 50%;
  animation: blink 1.5s ease infinite;
}

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }

.hero-title {
  font-size: clamp(2.6rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: fadeInDown 0.7s ease 0.1s both;
}

.accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.8;
  animation: fadeInDown 0.8s ease 0.2s both;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInDown 0.9s ease 0.3s both;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--accent);
  font-size: 1.2rem;
  animation: bounce 2s ease infinite;
  z-index: 1;
}

@keyframes bounce {
  0%,100%{transform:translateX(-50%) translateY(0)}
  50%{transform:translateX(-50%) translateY(8px)}
}

/* ========= BUTTONS ========= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent3) 100%);
  color: #000;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,200,255,0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(0,200,255,0.35);
}

.btn-ghost:hover {
  background: rgba(0,200,255,0.08);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ========= STATS ========= */
.stats {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  border-right: 1px solid var(--border);
  transition: var(--transition);
}

.stat-item:last-child { border-right: none; }
.stat-item:hover { background: rgba(0,200,255,0.04); }

.stat-num {
  font-size: 3rem;
  font-weight: 900;
  font-family: var(--mono);
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ========= SECTIONS ========= */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 16px;
  font-family: var(--mono);
}

.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-header p {
  color: var(--text-dim);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ========= CARDS ========= */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(0,200,255,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before { opacity: 1; }

.card-featured {
  grid-column: span 1;
  background: linear-gradient(135deg, rgba(0,200,255,0.06) 0%, rgba(123,92,255,0.06) 100%);
  border-color: rgba(0,200,255,0.2);
}

.card-icon {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--accent);
  line-height: 1;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.card p {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.card-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}

.card-link:hover { color: var(--accent2); }

/* ========= NEWS ========= */
.news-section { background: var(--bg2); }

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.news-card-big {
  grid-column: 1;
  grid-row: 1 / 3;
  display: flex;
  flex-direction: column;
}

.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.news-card:hover {
  border-color: rgba(0,200,255,0.25);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.news-img {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
  background: var(--bg3);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-img img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.news-body { flex: 1; display: flex; flex-direction: column; gap: 8px; }

.news-tag {
  display: inline-block;
  background: rgba(0,255,170,0.1);
  color: var(--accent2);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  width: fit-content;
  font-family: var(--mono);
}

.news-card time {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--mono);
}

.news-card h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin-top: 4px;
}

.news-card p {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.65;
  flex: 1;
}

.news-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: auto;
  transition: var(--transition);
}

.news-link:hover { color: var(--accent2); }

/* ========= VIDEO ========= */
.video-preview { background: var(--bg); }

.video-wrap {
  position: relative;
  width: 100%;
  max-width: 860px;
  margin: 0 auto 32px;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.video-wrap iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

.video-desc {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.video-desc .btn { margin-top: 20px; }

/* ========= FORMULA BAND ========= */
.formula-band {
  background: linear-gradient(135deg, rgba(0,200,255,0.06) 0%, rgba(123,92,255,0.06) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
  overflow: hidden;
}

.formula-scroll {
  display: flex;
  align-items: center;
  gap: 24px;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text-dim);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
}

.formula-scroll::-webkit-scrollbar { display: none; }

.formula-scroll strong { color: var(--accent); }
.formula-scroll .sep { color: var(--accent); font-size: 1.2rem; }

/* ========= RESOURCES ========= */
.resources { background: var(--bg2); }

.resources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.resource-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition);
}

.resource-card:hover {
  border-color: rgba(0,200,255,0.3);
  transform: translateY(-3px);
  background: rgba(0,200,255,0.05);
}

.res-icon { font-size: 1.6rem; }

.res-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.res-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ========= FOOTER ========= */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding-top: 64px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo-wave { font-size: 1.8rem; color: var(--accent); }
.footer-brand .logo-text { font-size: 1.2rem; color: var(--text); }
.footer-brand .logo-text strong { color: var(--accent); }
.footer-brand p { color: var(--text-dim); font-size: 0.85rem; margin-top: 12px; line-height: 1.6; }

.footer-nav h4, .footer-contacts h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-family: var(--mono);
}

.footer-nav ul { list-style: none; }
.footer-nav ul li { margin-bottom: 8px; }
.footer-nav ul a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}
.footer-nav ul a:hover { color: var(--accent); }

.footer-contacts p {
  color: var(--text-dim);
  font-size: 0.88rem;
  margin-bottom: 8px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--mono);
}

/* ========= BACK TO TOP ========= */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  z-index: 999;
  opacity: 0;
  transform: translateY(16px);
  transition: var(--transition);
  box-shadow: 0 4px 24px rgba(0,200,255,0.3);
}

.back-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--accent2);
  transform: translateY(-3px);
}

/* ========= ANIMATIONS ========= */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========= PAGE HERO (subpages) ========= */
.page-hero {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, var(--bg2) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.page-hero p {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ========= RESEARCH PAGE ========= */
.research-section {
  padding: 80px 0;
}

.research-block {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
  padding: 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
  transition: var(--transition);
}

.research-block:hover {
  border-color: rgba(0,200,255,0.2);
  box-shadow: var(--shadow);
}

.research-block-icon {
  font-size: 4rem;
  text-align: center;
  opacity: 0.7;
}

.research-block h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.research-block p {
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 16px;
}

.research-block .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  background: rgba(0,200,255,0.08);
  color: var(--accent);
  border: 1px solid rgba(0,200,255,0.2);
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 100px;
  font-family: var(--mono);
  font-weight: 600;
}

/* ========= ARTICLES PAGE ========= */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.article-card:hover {
  border-color: rgba(0,200,255,0.25);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.article-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.article-meta time {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-family: var(--mono);
}

.article-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

.article-card .authors {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-style: italic;
  margin-bottom: 12px;
}

.article-card p {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

.article-card a.read-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}

.article-card a.read-link:hover { color: var(--accent2); }

/* ========= VIDEO PAGE ========= */
.videos-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.video-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.video-card:hover {
  border-color: rgba(0,200,255,0.25);
  box-shadow: var(--shadow);
}

.video-card .embed-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

.video-card .embed-wrap iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

.video-card .video-info {
  padding: 24px;
}

.video-card .video-info h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.video-card .video-info p {
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ========= CONTACTS PAGE ========= */
.contacts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: rgba(0,200,255,0.2);
}

.contact-item .ci-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--mono);
  margin-bottom: 4px;
}

.contact-item p, .contact-item a {
  color: var(--text-dim);
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
}

.contact-item a:hover { color: var(--accent); }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--mono);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,200,255,0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========= RESPONSIVE ========= */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .news-card-big { grid-column: 1 / 3; grid-row: auto; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .research-block { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
  }
  .nav-links.open { display: flex; }
  .burger { display: flex; }

  .hero-title { font-size: 2.4rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
  .stat-item:nth-child(odd) { border-right: 1px solid var(--border); }
  .stat-item:nth-last-child(-n+2) { border-bottom: none; }

  .cards-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card-big { grid-column: 1; }
  .resources-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .articles-grid { grid-template-columns: 1fr; }
  .videos-grid { grid-template-columns: 1fr; }
  .contacts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-cta { flex-direction: column; }
  .resources-grid { grid-template-columns: 1fr; }
  .formula-band { display: none; }
}