/* ============================================================
   Design tokens — black / dark-green cyber palette
   ============================================================ */
:root {
  --bg-base: #0A0F0D;
  --bg-elev: #0E1F17;
  --bg-elev-2: #112A1F;
  --border-subtle: rgba(52, 211, 153, 0.18);
  --border-strong: rgba(52, 211, 153, 0.45);

  --accent: #10B981;
  --accent-bright: #34D399;
  --accent-glow: rgba(16, 185, 129, 0.35);

  --text-primary: #F4F7F5;
  --text-muted: #A7B0AD;
  --text-faint: #6B746F;

  --warn: #F59E0B;
  --warn-bg: rgba(245, 158, 11, 0.08);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-glow: 0 0 0 1px var(--border-subtle), 0 12px 40px -12px var(--accent-glow);
  --shadow-card: 0 0 0 1px var(--border-subtle), 0 24px 60px -30px rgba(0, 0, 0, 0.8);

  --container: 1200px;
}

/* ============================================================
   Base
   ============================================================ */
* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI',
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  font-feature-settings: 'cv11', 'ss01';
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* When the document is in Chinese mode, give CJK fonts priority for body
   copy so headlines and paragraphs render with proper Chinese typography. */
html[lang="zh"] body {
  font-family: 'Noto Sans SC', 'Inter', 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', system-ui, sans-serif;
  letter-spacing: 0;
}

html[lang="zh"] h1,
html[lang="zh"] h2,
html[lang="zh"] h3,
html[lang="zh"] h4 {
  letter-spacing: 0;
}

/* Cyber grid + radial glow background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(52, 211, 153, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52, 211, 153, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: center top;
  mask-image: radial-gradient(ellipse at top, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at top, black 30%, transparent 75%);
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(16, 185, 129, 0.18), transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(16, 185, 129, 0.06), transparent 70%);
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.mono {
  font-family: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-feature-settings: 'zero', 'ss02';
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-bright);
  background-color: rgba(16, 185, 129, 0.04);
}

.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-bright);
  box-shadow: 0 0 12px var(--accent-bright);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.1; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); line-height: 1.2; }
h3 { font-size: 1.2rem; }

p { margin: 0; color: var(--text-muted); }

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background-color: rgba(10, 15, 13, 0.72);
  border-bottom: 1px solid var(--border-subtle);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #0E5C42);
  display: grid;
  place-items: center;
  color: var(--bg-base);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 0 16px var(--accent-glow);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--accent-bright); }

/* ============================================================
   Language toggle (segmented control)
   ============================================================ */
.lang-toggle {
  display: inline-flex;
  align-items: stretch;
  padding: 3px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background-color: rgba(14, 31, 23, 0.5);
  gap: 2px;
}

.lang-btn {
  appearance: none;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: 'JetBrains Mono', 'Noto Sans SC', monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  padding: 7px 14px;
  border-radius: 999px;
  transition: all 0.18s ease;
  min-width: 44px;
}

.lang-btn:hover { color: var(--text-primary); }

.lang-btn.active {
  background-color: var(--accent);
  color: var(--bg-base);
  font-weight: 600;
  box-shadow: 0 0 12px var(--accent-glow);
}

.lang-btn:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .lang-btn { padding: 6px 10px; min-width: 40px; }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-base);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 12px 32px -8px var(--accent-glow);
}

.btn-primary:hover {
  background-color: var(--accent-bright);
  border-color: var(--accent-bright);
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px var(--accent-bright), 0 18px 42px -8px var(--accent-glow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: rgba(16, 185, 129, 0.08);
  border-color: var(--accent-bright);
}

.btn svg { width: 18px; height: 18px; }

/* ============================================================
   Sections
   ============================================================ */
section { padding: 96px 0; position: relative; }

@media (max-width: 640px) {
  section { padding: 64px 0; }
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

/* ============================================================
   Hero
   ============================================================ */
.hero { padding-top: 80px; padding-bottom: 80px; }

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-inner { grid-template-columns: 1.1fr 1fr; gap: 72px; }
}

.hero-content { display: flex; flex-direction: column; gap: 24px; }

.hero-content h1 .accent {
  background: linear-gradient(120deg, var(--accent-bright), #6EE7B7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-content .lede {
  font-size: 1.1rem;
  max-width: 540px;
  color: var(--text-muted);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  margin-top: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-trust-item svg { width: 16px; height: 16px; color: var(--accent-bright); }

/* ============================================================
   Rate Card
   ============================================================ */
.rate-card {
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-base));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.rate-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 0%, rgba(52, 211, 153, 0.12), transparent 50%);
  pointer-events: none;
}

.rate-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  position: relative;
}

.rate-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.rate-card-title .pair {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-bright);
  padding: 4px 10px;
  border-radius: 999px;
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--border-subtle);
}

.live-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-bright);
  box-shadow: 0 0 10px var(--accent-bright);
  animation: pulse 2s ease-in-out infinite;
}

.rate-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  position: relative;
}

.rate-cell {
  padding: 22px 20px;
  background-color: rgba(17, 42, 31, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

.rate-cell:hover { border-color: var(--border-strong); }

.rate-cell-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 10px;
}

.rate-cell-label .arrow {
  width: 12px;
  height: 12px;
}

.rate-cell-label.buy .arrow { color: var(--accent-bright); }
.rate-cell-label.sell .arrow { color: #F87171; }

.rate-cell-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1.8rem, 4.5vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.rate-cell-value .unit {
  font-size: 0.75rem;
  color: var(--text-faint);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.rate-card-meta {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-faint);
  position: relative;
}

.rate-card-meta .updated {
  display: flex;
  align-items: center;
  gap: 6px;
}

.rate-card-note {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background-color: rgba(16, 185, 129, 0.05);
  border-left: 2px solid var(--accent);
  font-size: 0.85rem;
  color: var(--text-muted);
  position: relative;
}

.rate-card-note.stale {
  background-color: var(--warn-bg);
  border-left-color: var(--warn);
  color: #FCD34D;
}

.rate-card-cta {
  margin-top: 22px;
  width: 100%;
  position: relative;
}

/* ============================================================
   Pair selector (crypto × fiat dropdowns)
   ============================================================ */
.pair-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.pair-divider {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-faint);
  user-select: none;
}

.pair-dropdown {
  position: relative;
}

.pair-dropdown-trigger {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 8px;
  border: 1px solid var(--border-subtle);
  background-color: rgba(14, 31, 23, 0.6);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', 'Noto Sans SC', monospace;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.18s ease;
  min-width: 96px;
}

.pair-dropdown-trigger:hover,
.pair-dropdown-trigger[aria-expanded="true"] {
  border-color: var(--border-strong);
  background-color: rgba(16, 185, 129, 0.06);
  color: var(--text-primary);
}

.pair-dropdown-trigger:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

.pair-dropdown-trigger .pair-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.05);
}

.pair-dropdown-trigger .pair-icon svg { width: 100%; height: 100%; display: block; }

.pair-dropdown-trigger .pair-code { letter-spacing: 0.04em; }

.pair-dropdown-trigger .pair-chevron {
  width: 14px;
  height: 14px;
  margin-left: auto;
  color: var(--text-faint);
  transition: transform 0.18s ease;
}

.pair-dropdown-trigger[aria-expanded="true"] .pair-chevron {
  transform: rotate(180deg);
  color: var(--accent-bright);
}

/* Popover panel */
.pair-popover {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 30;
  min-width: 240px;
  max-height: 280px;
  overflow-y: auto;
  padding: 6px;
  background-color: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: 0 18px 48px -12px rgba(0, 0, 0, 0.7), 0 0 0 1px var(--border-subtle);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
  animation: popover-in 0.14s ease-out;
}

.pair-popover[hidden] { display: none; }

.pair-popover::-webkit-scrollbar { width: 6px; }
.pair-popover::-webkit-scrollbar-thumb {
  background-color: var(--border-subtle);
  border-radius: 3px;
}

@keyframes popover-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.pair-option {
  appearance: none;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 10px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.88rem;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.12s ease;
}

.pair-option:hover,
.pair-option:focus-visible {
  background-color: rgba(16, 185, 129, 0.08);
  outline: none;
}

.pair-option[aria-selected="true"] {
  background-color: rgba(16, 185, 129, 0.14);
}

.pair-option[aria-selected="true"] .option-code {
  color: var(--accent-bright);
}

.pair-option .option-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.05);
}

.pair-option .option-icon svg { width: 100%; height: 100%; display: block; }

.pair-option .option-code {
  font-family: 'JetBrains Mono', 'Noto Sans SC', monospace;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 0.86rem;
  min-width: 52px;
}

.pair-option .option-name {
  flex: 1;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* Live / Indicative status badge variants */
.live-badge.indicative {
  color: var(--warn);
  background-color: var(--warn-bg);
  border-color: rgba(245, 158, 11, 0.25);
}

.live-badge.indicative .dot {
  background-color: var(--warn);
  box-shadow: 0 0 10px var(--warn);
}

/* When the rate cells show "Quote on request" instead of numbers */
.rate-cell-value.on-request {
  font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--text-muted);
  align-items: center;
  min-height: 2.4em;
}

.rate-cell-value.on-request [data-rate-buy],
.rate-cell-value.on-request [data-rate-sell] {
  font-size: 1rem;
  letter-spacing: 0;
  font-weight: 500;
  font-family: inherit;
}

.rate-cell-value.on-request .unit { display: none; }

/* Emphasised paragraph in disclaimer (the bilateral / non-custody one) */
.disclaimer-emphasis {
  position: relative;
  padding: 14px 16px 14px 18px;
  margin: 4px 0;
  border-radius: var(--radius-sm);
  background-color: rgba(16, 185, 129, 0.05);
  border-left: 2px solid var(--accent);
  color: var(--text-primary) !important;
  font-weight: 500;
}

/* ============================================================
   Videos (horizontal carousel)
   ============================================================ */
.video-carousel {
  position: relative;
}

.video-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 85%;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scroll-padding-left: 4px;
  padding: 4px 4px 18px;
  margin: 0 -4px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
  -webkit-overflow-scrolling: touch;
}

.video-track::-webkit-scrollbar { height: 6px; }
.video-track::-webkit-scrollbar-track { background: transparent; }
.video-track::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 3px;
}
.video-track::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

@media (min-width: 640px) {
  .video-track { grid-auto-columns: calc((100% - 20px) / 2); }
}

@media (min-width: 1024px) {
  .video-track { grid-auto-columns: calc((100% - 40px) / 3); }
}

.video-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  background-color: rgba(14, 31, 23, 0.4);
  transition: all 0.25s ease;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  min-width: 0;
}

.video-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 20px;
}

.carousel-arrows {
  display: flex;
  align-items: center;
  gap: 10px;
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background-color: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.carousel-btn:hover:not(:disabled) {
  border-color: var(--border-strong);
  background-color: rgba(16, 185, 129, 0.08);
  color: var(--accent-bright);
}

.carousel-btn:active:not(:disabled) {
  transform: scale(0.96);
}

.carousel-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.carousel-btn svg { width: 18px; height: 18px; }

.carousel-progress {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
}

.carousel-dot {
  width: 24px;
  height: 3px;
  border-radius: 999px;
  background-color: var(--border-subtle);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.2s ease;
}

.carousel-dot:hover { background-color: var(--border-strong); }

.carousel-dot.active {
  background-color: var(--accent-bright);
  width: 36px;
  box-shadow: 0 0 8px var(--accent-glow);
}

.carousel-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  white-space: nowrap;
}

.carousel-hint .current { color: var(--accent-bright); }

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--bg-elev);
  border: 1px solid var(--border-subtle);
}

.video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, rgba(16, 185, 129, 0.12), transparent 60%),
    var(--bg-elev);
  color: var(--text-faint);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  padding: 12px;
  pointer-events: none;
}

.video-placeholder .play-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1.5px solid var(--border-strong);
  display: grid;
  place-items: center;
  margin: 0 auto 12px;
  color: var(--accent-bright);
}

.video-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 4px 6px 8px;
}

.video-meta .index {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent-bright);
  letter-spacing: 0.12em;
}

.video-meta .title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.video-meta .desc { font-size: 0.82rem; color: var(--text-muted); }

/* ============================================================
   Why Us
   ============================================================ */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) { .why-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .why-grid { grid-template-columns: repeat(4, 1fr); } }

.why-card {
  padding: 28px 24px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(14, 31, 23, 0.5), transparent);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all 0.2s ease;
}

.why-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.why-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--border-subtle);
  display: grid;
  place-items: center;
  color: var(--accent-bright);
}

.why-icon svg { width: 22px; height: 22px; }

.why-card h3 { font-size: 1.05rem; }
.why-card p { font-size: 0.9rem; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background-color: rgba(14, 31, 23, 0.4);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--border-strong);
  background-color: rgba(14, 31, 23, 0.7);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 1rem;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '';
  width: 12px;
  height: 12px;
  border-right: 1.5px solid var(--accent-bright);
  border-bottom: 1.5px solid var(--accent-bright);
  transform: rotate(45deg);
  margin-right: 6px;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(-135deg);
  margin-top: 6px;
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
  margin-top: 0;
}

/* ============================================================
   Disclaimer
   ============================================================ */
.disclaimer {
  padding-top: 64px;
  padding-bottom: 64px;
}

.disclaimer-box {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  background-color: rgba(14, 31, 23, 0.3);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.disclaimer-head {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--warn);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.disclaimer-head svg { width: 18px; height: 18px; }

.disclaimer h2 { font-size: 1.4rem; }

.disclaimer p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.disclaimer p + p { margin-top: 12px; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 56px 0 32px;
  background-color: rgba(10, 15, 13, 0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}

.footer-brand { display: flex; flex-direction: column; gap: 12px; max-width: 380px; }
.footer-brand p { font-size: 0.88rem; }

.footer-col h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
  font-weight: 500;
}

.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--text-muted); font-size: 0.9rem; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--accent-bright); }

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-faint);
}

/* ============================================================
   Utility: skeleton for rate card while loading
   ============================================================ */
.skeleton {
  background: linear-gradient(90deg,
    rgba(255, 255, 255, 0.03) 0%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.03) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
  border-radius: 6px;
  color: transparent !important;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}