/* Crypto Ledger Hardware - Modern multi-block design */
:root {
  --color1: #ff8108;
  --color2: #ffbf08;
  --color3: #fff424;
  --color4: #fffb93;
  --color5: #fffbe8;
  --dark: #1a1a1e;
  --dark2: #252530;
  --text: #2d2d35;
  --text-muted: #5a5a68;
  --white: #ffffff;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.12);
  --transition: 0.25s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--color5);
  min-height: 100vh;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color1);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color2);
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
  color: var(--white);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white);
}

.logo:hover {
  color: var(--color2);
}

/* Nav */
.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.main-nav a {
  color: rgba(255,255,255,0.9);
  font-weight: 500;
}

.main-nav a:hover {
  color: var(--color2);
}

/* Lang switcher */
.lang-switcher {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.lang-switcher a {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.2);
}

.lang-switcher a:hover,
.lang-switcher a.active-lang {
  background: var(--color1);
  color: var(--white);
  border-color: var(--color1);
}

/* Main content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 20px 3rem;
}

/* Hero / first block */
.hero-block {
  background: linear-gradient(145deg, var(--color5) 0%, var(--color4) 50%, var(--color3) 100%);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,193,8,0.2);
}

.hero-block h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  color: var(--dark);
  line-height: 1.25;
}

.hero-block h1 .color1 { color: var(--color1); }
.hero-block h1 .color2 { color: var(--color2); }

.hero-block p {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text);
  max-width: 72ch;
}

/* Content blocks */
.content-block {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.content-block h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  color: var(--dark);
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--color2);
  display: inline-block;
}

.content-block h3 {
  margin: 1.5rem 0 0.75rem;
  font-size: 1.2rem;
  color: var(--dark2);
}

.content-block p {
  margin: 0 0 1rem;
}

.content-block p:last-child {
  margin-bottom: 0;
}

/* Image blocks - not too large */
.img-block {
  margin: 1.5rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  max-width: 560px;
}

.img-block img {
  width: 100%;
  height: auto;
  loading: lazy;
}

/* Tables */
.content-block table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.content-block th,
.content-block td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border: 1px solid #e8e8ec;
}

.content-block th {
  background: var(--color5);
  color: var(--dark);
  font-weight: 600;
}

.content-block tr:nth-child(even) {
  background: #fafafa;
}

/* Lists */
.content-block ul,
.content-block ol {
  margin: 0.75rem 0 1rem;
  padding-left: 1.25rem;
}

.content-block li {
  margin-bottom: 0.35rem;
}

.content-block ol {
  list-style-type: decimal;
}

/* Highlight block */
.highlight-block {
  background: linear-gradient(90deg, var(--color4) 0%, var(--color5) 100%);
  border-left: 4px solid var(--color1);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.5rem 0;
}

/* FAQ block + script */
.faq-block {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.faq-block h2 {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
  color: var(--dark);
  border-bottom: 3px solid var(--color2);
  padding-bottom: 0.5rem;
  display: inline-block;
}

.faq-item {
  border: 1px solid #e8e8ec;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.faq-item:last-child {
  margin-bottom: 0;
}

.faq-q {
  width: 100%;
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  background: var(--color5);
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  transition: background var(--transition);
}

.faq-q:hover {
  background: var(--color4);
}

.faq-q::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color1);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.is-open .faq-q::after {
  transform: rotate(45deg);
}

.faq-a {
  padding: 0 1.25rem 1rem;
  display: none;
}

.faq-item.is-open .faq-a {
  display: block;
}

.faq-a-inner {
  padding: 0.75rem 0;
  border-top: 1px solid #eee;
  color: var(--text);
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.85);
  padding: 2.5rem 20px;
  margin-top: 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-grid h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--color2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-grid li {
  margin-bottom: 0.4rem;
}

.footer-grid a {
  color: rgba(255,255,255,0.8);
}

.footer-grid a:hover {
  color: var(--color2);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}

/* Utility */
.color1 { color: var(--color1); }
.color2 { color: var(--color2); }
.color3 { color: var(--color3); }
.color4 { color: var(--color4); }
.color5 { color: var(--color5); }

/* Responsive */
@media (max-width: 768px) {
  .site-header .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0.25rem;
  }

  .hero-block {
    padding: 1.5rem;
  }

  .content-block {
    padding: 1.25rem;
  }

  .content-block table {
    font-size: 0.85rem;
  }

  .content-block th,
  .content-block td {
    padding: 0.5rem;
  }

  main {
    padding: 1.5rem 16px 2rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }

  .content-block table {
    display: block;
  }

  .content-block thead {
    display: none;
  }

  .content-block tr {
    display: block;
    margin-bottom: 1rem;
    border: 1px solid #e8e8ec;
    border-radius: 8px;
    overflow: hidden;
  }

  .content-block td {
    display: block;
    padding: 0.5rem 0.75rem;
    border: none;
    border-bottom: 1px solid #eee;
  }

  .content-block td:last-child {
    border-bottom: none;
  }

  .content-block td::before {
    content: attr(data-label);
    font-weight: 600;
    display: block;
    margin-bottom: 0.25rem;
    color: var(--dark2);
  }
}