/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.3s cubic-bezier(0.25,0.46,0.45,0.94), color 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
}
a:hover {
  color: var(--accent);
}
img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== Variables ===== */
:root {
  --primary: #1a2a6c;
  --primary-light: #2d4a8e;
  --primary-dark: #0f1a4a;
  --accent: #e94560;
  --accent-light: #f06a7a;
  --bg: #f4f7fc;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-light: #5a5a7a;
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
  --primary: #2d4a8e;
  --primary-light: #3d5aae;
  --primary-dark: #1a2a6c;
  --accent: #e94560;
  --accent-light: #f06a7a;
  --bg: #0f0f1a;
  --bg-card: #1a1a2e;
  --text: #e0e0f0;
  --text-light: #a0a0c0;
  --glass: rgba(26, 42, 108, 0.3);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* ===== Utility ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.glass {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233, 69, 96, 0.3);
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.section {
  padding: 80px 0;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 48px;
  text-align: center;
}
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid transparent;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
  border-color: var(--glass-border);
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
}
.grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 24px;
}
.text-center {
  text-align: center;
}
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .container { padding: 0 16px; }
}

/* ===== Header ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 12px 0;
  transition: all var(--transition);
}
header.scrolled {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
}
.logo svg {
  width: 40px;
  height: 40px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 0;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.theme-toggle {
  background: none;
  border: none;
  color: var(--text);
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: background var(--transition);
}
.theme-toggle:hover {
  background: var(--glass);
}
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow);
    border-radius: 0 0 var(--radius) var(--radius);
  }
  .nav-links.open { display: flex; }
  .mobile-menu-btn { display: block; }
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 70%, var(--accent) 100%);
  padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 800'%3E%3Cg fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='1'%3E%3Ccircle cx='400' cy='400' r='300'/%3E%3Ccircle cx='400' cy='400' r='200'/%3E%3Ccircle cx='400' cy='400' r='100'/%3E%3C/g%3E%3C/svg%3E") center/cover;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  color: #fff;
}
.hero-content h1 {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}
.hero-content p {
  font-size: 20px;
  opacity: 0.9;
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
@media (max-width: 768px) {
  .hero-content h1 { font-size: 36px; }
  .hero-content p { font-size: 17px; }
}

/* ===== Banner Carousel ===== */
.banner-carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  margin-top: 32px;
  background: var(--bg-card);
  box-shadow: var(--shadow);
}
.banner-slide {
  display: none;
  padding: 48px 32px;
  min-height: 200px;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.banner-slide.active { display: flex; }
.banner-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 16px 0;
}
.banner-dots button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: var(--text-light);
  cursor: pointer;
  transition: all var(--transition);
}
.banner-dots button.active {
  background: var(--accent);
  width: 32px;
  border-radius: 6px;
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
.stat-card {
  text-align: center;
  padding: 32px 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.stat-number {
  font-size: 48px;
  font-weight: 900;
  color: var(--accent);
  display: block;
  line-height: 1.2;
}
.stat-label {
  font-size: 16px;
  color: var(--text-light);
  margin-top: 8px;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding-left: 32px;
  border-left: 3px solid var(--accent);
}
.timeline-item {
  margin-bottom: 32px;
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -39px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 4px solid var(--bg);
}
.timeline-year {
  font-weight: 800;
  color: var(--accent);
  font-size: 18px;
}

/* ===== Team ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 32px;
}
.team-card {
  text-align: center;
  padding: 32px 16px;
}
.team-card svg {
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--glass);
}

/* ===== FAQ ===== */
.faq-item {
  border-bottom: 1px solid var(--glass-border);
  padding: 16px 0;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 17px;
  padding: 8px 0;
  background: none;
  border: none;
  color: var(--text);
  width: 100%;
  text-align: left;
}
.faq-question::after {
  content: '+';
  font-size: 22px;
  transition: transform var(--transition);
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer {
  padding: 0 0 16px;
  display: none;
  color: var(--text-light);
  line-height: 1.8;
}
.faq-item.open .faq-answer { display: block; }

/* ===== HowTo ===== */
.howto-steps { counter-reset: step; }
.howto-step {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
  align-items: flex-start;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.howto-step::before {
  counter-increment: step;
  content: counter(step);
  min-width: 44px;
  height: 44px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
}

/* ===== Article Cards ===== */
.article-card {
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.article-card:hover { transform: translateY(-4px); }
.article-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}
.article-card .date {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 12px;
}
.article-card p {
  color: var(--text-light);
  margin-bottom: 16px;
}
.article-card .btn {
  padding: 8px 20px;
  font-size: 14px;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}
.contact-info p {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 16px;
}
.contact-info svg { flex-shrink: 0; }

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark);
  color: #fff;
  padding: 48px 0 24px;
  margin-top: 80px;
}
.footer a { color: rgba(255, 255, 255, 0.7); }
.footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  opacity: 0.8;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(233, 69, 96, 0.3);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: all var(--transition);
}
.back-to-top.show { display: flex; }
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(233, 69, 96, 0.4);
}

/* ===== Search Modal ===== */
.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.search-modal.open { display: flex; }
.search-modal-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 560px;
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.2);
}
.search-modal input {
  width: 100%;
  padding: 16px 20px;
  border: 2px solid var(--glass-border);
  border-radius: 50px;
  font-size: 18px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border var(--transition);
}
.search-modal input:focus { border-color: var(--accent); }
.search-results {
  margin-top: 16px;
  max-height: 300px;
  overflow-y: auto;
}
.search-results div {
  padding: 12px 0;
  border-bottom: 1px solid var(--glass-border);
  cursor: pointer;
}
.search-results div:hover { color: var(--accent); }

/* ===== Scroll Animation ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== QR Code ===== */
.qr-svg {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  background: #fff;
  border-radius: 12px;
  padding: 8px;
}