/* ==========================================================================
   Bianeno Crypto Hub & OKX Partner Portal - Comprehensive Stylesheet
   Domain: bianeno.com | Referral Code: OK6667
   Anti-Social-Engineering & Full-Spectrum Crypto Encyclopedia UI
   ========================================================================== */

/* 1. CSS Variables & Reset */
:root {
  --bg-primary: #0a0b0e;
  --bg-secondary: #12151f;
  --bg-tertiary: #191e2b;
  --bg-card: rgba(20, 24, 34, 0.75);
  --bg-card-hover: rgba(26, 32, 46, 0.9);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 255, 135, 0.35);
  --border-card: rgba(255, 255, 255, 0.1);

  --text-primary: #ffffff;
  --text-secondary: #9aa3b5;
  --text-muted: #647087;

  --accent-green: #00ff87;
  --accent-cyan: #60efff;
  --accent-glow: rgba(0, 255, 135, 0.25);
  --accent-gradient: linear-gradient(135deg, #00ff87 0%, #60efff 100%);
  --accent-gradient-hover: linear-gradient(135deg, #00e077 0%, #4ae3f5 100%);
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  line-height: 1.6;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #151b2e 0%, var(--bg-primary) 65%);
  min-height: 100vh;
  position: relative;
}

/* Typography & General Helpers */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

img, svg {
  vertical-align: middle;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--accent-green);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.text-center { text-align: center; }
.text-green { color: var(--accent-green); }

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.highlight-text {
  color: var(--accent-green);
  font-weight: 700;
}

/* ==========================================================================
   2. Unified Clean Top Announcement & Safety Strip
   ========================================================================== */
.top-announcement {
  background: #090c14;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 8px 0;
  font-size: 12px;
}

.announcement-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.announcement-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.announcement-badge {
  background: rgba(255, 255, 255, 0.08);
  color: #94a3b8;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.compliance-hint {
  color: #94a3b8;
}

.announcement-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.announcement-offer {
  color: #cbd5e1;
}

.announcement-offer strong {
  color: #ffffff;
}

.announcement-link {
  color: var(--accent-green);
  font-weight: 700;
  white-space: nowrap;
}

.announcement-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   3. Header & Dropdown Navigation (Spacious & Clean)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 11, 14, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.3px;
  color: #ffffff;
}

.brand-tag {
  font-size: 10px;
  color: var(--accent-green);
  font-weight: 600;
  letter-spacing: 0.2px;
}

.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-item {
  position: relative;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-item:hover .nav-link {
  color: #ffffff;
}

.nav-link .chevron {
  color: #64748b;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.nav-item:hover .chevron {
  color: var(--accent-green);
  transform: rotate(180deg);
}

/* Dropdown Menu Card */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 250px;
  background: #121622;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 6px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
}

/* Invisible hover bridge to prevent dropdown flickering */
.dropdown-menu::before {
  content: "";
  position: absolute;
  top: -12px;
  left: 0;
  width: 100%;
  height: 12px;
}

.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: #cbd5e1;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.dropdown-link:hover {
  background: rgba(0, 255, 135, 0.08);
  color: var(--accent-green);
  transform: translateX(3px);
}

.drop-icon {
  font-size: 14px;
  width: 20px;
  text-align: center;
}

.drop-text {
  white-space: nowrap;
}

.header-action {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

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

.mobile-menu-toggle span {
  width: 22px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ==========================================================================
   5. Buttons & Interactive Controls
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #05080f;
  font-weight: 700;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(0, 255, 135, 0.4);
}

.btn-cta {
  background: var(--accent-gradient);
  color: #060911;
  font-weight: 800;
  font-size: 16px;
  padding: 14px 30px;
  box-shadow: 0 6px 24px var(--accent-glow);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 255, 135, 0.45);
}

.btn-cta.btn-lg {
  font-size: 17px;
  padding: 16px 36px;
}

.btn-copy {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #ffffff;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
}

.btn-copy:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: #ffffff;
}

.btn-outline:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: rgba(0, 255, 135, 0.05);
}

.btn-secondary {
  background: #242a38;
  color: #ffffff;
}

.btn-secondary:hover {
  background: #313849;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn-copy-sm {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
}

.btn-copy-sm:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.copy-trigger {
  cursor: pointer;
  border-bottom: 1px dashed var(--accent-green);
  padding: 0 2px;
}

.copy-trigger:hover {
  color: var(--accent-green);
}

/* ==========================================================================
   6. Hero Section
   ========================================================================== */
.hero-section {
  padding: 40px 0 70px;
  position: relative;
}

.trust-notice-banner {
  background: rgba(0, 255, 135, 0.06);
  border: 1px solid rgba(0, 255, 135, 0.2);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 13px;
  color: #cbd5e1;
  margin-bottom: 32px;
}

.trust-notice-banner .notice-icon {
  font-size: 20px;
  line-height: 1;
  margin-top: 2px;
}

.trust-notice-banner .notice-content strong {
  display: block;
  color: #ffffff;
  margin-bottom: 4px;
}

.trust-notice-banner .notice-content p {
  color: #94a3b8;
  line-height: 1.5;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 13px;
  color: #e2e8f0;
  margin-bottom: 20px;
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 10px var(--accent-green);
}

.hero-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 18px;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

/* Invite Card in Hero */
.invite-card {
  background: linear-gradient(145deg, #141824 0%, #10131d 100%);
  border: 1px solid rgba(0, 255, 135, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  margin-bottom: 24px;
}

.invite-code-wrapper {
  text-align: center;
  margin-bottom: 20px;
  padding: 12px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(0, 255, 135, 0.4);
}

.invite-label {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.invite-code-display {
  font-size: 38px;
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--accent-green);
  text-shadow: 0 0 20px rgba(0, 255, 135, 0.5);
  line-height: 1.1;
  padding: 4px 0;
  user-select: all;
}

.invite-sublabel {
  font-size: 12px;
  color: #94a3b8;
  margin-top: 4px;
}

.invite-action-group {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 12px;
}

.hero-trust-items {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.check-icon {
  color: var(--accent-green);
  font-weight: 900;
}

/* Hero Right Visual Matrix */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.card-glow {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  background: var(--accent-green);
  opacity: 0.12;
  filter: blur(50px);
  border-radius: 50%;
  pointer-events: none;
}

.matrix-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #e2e8f0;
}

.pulse {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.verified-tag {
  font-size: 11px;
  background: rgba(0, 255, 135, 0.12);
  color: var(--accent-green);
  border: 1px solid rgba(0, 255, 135, 0.3);
  padding: 3px 8px;
  border-radius: 4px;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.stat-box {
  background: rgba(14, 18, 28, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: var(--transition-fast);
}

.stat-box:hover {
  border-color: rgba(0, 255, 135, 0.25);
  background: rgba(20, 26, 40, 0.7);
}

.stat-number {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-number small {
  font-size: 15px;
  color: var(--accent-green);
}

.stat-title {
  font-size: 13px;
  font-weight: 600;
  color: #e2e8f0;
}

.stat-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.matrix-footer {
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.footer-tip {
  font-size: 12px;
  color: #94a3b8;
  line-height: 1.5;
}

/* ==========================================================================
   7. General Section Layout
   ========================================================================== */
.section {
  padding: 75px 0;
  position: relative;
}

.section-header {
  max-width: 820px;
  margin: 0 auto 46px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-green);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
  color: #ffffff;
}

.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   8. Exclusive Benefits Cards
   ========================================================================== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 255, 135, 0.3);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.feature-card.highlight-border {
  border-color: rgba(0, 255, 135, 0.4);
  background: linear-gradient(160deg, rgba(18, 25, 38, 0.85) 0%, rgba(10, 14, 22, 0.85) 100%);
}

.popular-ribbon {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--accent-gradient);
  color: #05080f;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}

.feature-icon-wrapper {
  margin-bottom: 18px;
}

.feature-icon {
  width: 46px;
  height: 46px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.feature-title {
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
  line-height: 1.4;
}

.feature-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.feature-list {
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  font-size: 12px;
  color: #94a3b8;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-list li {
  position: relative;
  padding-left: 14px;
}

.feature-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-weight: bold;
}

/* ==========================================================================
   9. Rebate Calculator
   ========================================================================== */
.calc-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.calc-left .section-header {
  margin: 0 0 24px 0;
  max-width: 100%;
}

.calc-controls {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.control-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 8px;
}

.tab-pill-group {
  display: inline-flex;
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-pill);
  padding: 4px;
  border: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.tab-pill {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-pill.active {
  background: #252d3d;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.slider-display-val {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent-green);
}

.range-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 8px;
  border-radius: 4px;
  background: #1e2638;
  outline: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-green);
  cursor: pointer;
  box-shadow: 0 0 12px var(--accent-green);
  border: 2px solid #ffffff;
  transition: transform 0.1s ease;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

.preset-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cbd5e1;
  padding: 6px 14px;
  font-size: 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition-fast);
}

.chip:hover, .chip.active {
  background: rgba(0, 255, 135, 0.12);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.calc-result-card {
  background: linear-gradient(150deg, #161c28 0%, #10141f 100%);
  border: 1px solid rgba(0, 255, 135, 0.35);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 20px;
}

.rebate-rate-badge {
  background: rgba(0, 255, 135, 0.15);
  color: var(--accent-green);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(0, 255, 135, 0.3);
}

.annual-saving-block {
  text-align: center;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  margin-bottom: 22px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.saving-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.saving-amount {
  font-size: 38px;
  font-weight: 900;
  color: var(--accent-green);
  line-height: 1.1;
  text-shadow: 0 0 24px rgba(0, 255, 135, 0.4);
}

.saving-cny {
  font-size: 13px;
  color: #94a3b8;
  margin-top: 6px;
}

.saving-breakdown {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 13px;
  margin-bottom: 22px;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
  padding-bottom: 8px;
}

.breakdown-row strong, .breakdown-row span:last-child {
  color: #ffffff;
}

.breakdown-row .discount-fee {
  color: var(--accent-green);
  font-weight: 700;
}

.calc-disclaimer-note {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 12px;
  line-height: 1.4;
}

/* ==========================================================================
   10. OKX 2026 Ecosystem Grid (New Module)
   ========================================================================== */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.eco-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-fast);
}

.eco-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 135, 0.25);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.eco-header {
  margin-bottom: 14px;
}

.eco-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-green);
  background: rgba(0, 255, 135, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.eco-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.eco-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.eco-features {
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: #94a3b8;
}

/* ==========================================================================
   11. Transparent Fee Matrix & Stack Card (New Module)
   ========================================================================== */
.fee-explanation-block {
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--accent-green);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-secondary);
}

.fee-box h4 {
  color: #ffffff;
  font-size: 14px;
  margin-bottom: 6px;
}

.fee-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.fee-table th, .fee-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
}

.fee-table th {
  background: rgba(255, 255, 255, 0.04);
  color: #e2e8f0;
  font-weight: 700;
}

.fee-table .rebate-col {
  color: var(--accent-green);
  font-weight: 700;
  background: rgba(0, 255, 135, 0.04);
}

.fee-table th.rebate-col {
  background: rgba(0, 255, 135, 0.08);
}

.fee-table tr.highlight-row td {
  background: rgba(0, 255, 135, 0.06);
}

.fee-stack-card {
  margin-top: 24px;
  background: linear-gradient(135deg, rgba(19, 27, 41, 0.8) 0%, rgba(13, 18, 28, 0.8) 100%);
  border: 1px solid rgba(0, 255, 135, 0.3);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.fee-stack-card h4 {
  font-size: 15px;
  color: var(--accent-green);
  margin-bottom: 8px;
}

.fee-stack-card p {
  font-size: 13px;
  color: #cbd5e1;
  line-height: 1.6;
}

/* ==========================================================================
   12. 3-Step Tutorial
   ========================================================================== */
.steps-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 22px;
  position: relative;
  transition: var(--transition-fast);
}

.step-card:hover {
  border-color: rgba(0, 255, 135, 0.3);
  transform: translateY(-4px);
}

.step-number-tag {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--accent-green);
  margin-bottom: 14px;
}

.step-icon {
  font-size: 32px;
  margin-bottom: 14px;
}

.step-title {
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.step-code-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 255, 135, 0.3);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  margin-bottom: 12px;
}

.step-code-box .code {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent-green);
  letter-spacing: 2px;
}

.btn-step-copy {
  background: rgba(0, 255, 135, 0.15);
  border: none;
  color: var(--accent-green);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.btn-step-copy:hover {
  background: var(--accent-green);
  color: #000000;
}

.step-notice {
  font-size: 11px;
  color: #eab308;
  line-height: 1.4;
}

.step-checklist {
  font-size: 12px;
  color: #94a3b8;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* ==========================================================================
   13. C2C Anti-Freeze Guide (New Module)
   ========================================================================== */
.c2c-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.c2c-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.c2c-header-block {
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
}

.c2c-header-block.buy {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, transparent 100%);
}

.c2c-header-block.sell {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.12) 0%, transparent 100%);
}

.c2c-header-block .badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
}

.c2c-header-block.buy .badge {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
}

.c2c-header-block.sell .badge {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

.c2c-header-block h3 {
  font-size: 18px;
  color: #ffffff;
}

.c2c-rules {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.rule-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.rule-num {
  width: 24px;
  height: 24px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  color: var(--accent-green);
  flex-shrink: 0;
  margin-top: 2px;
}

.rule-item strong {
  display: block;
  font-size: 14px;
  color: #f1f5f9;
  margin-bottom: 4px;
}

.rule-item p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   14. Transfer Guide & Memo Alert (New Module)
   ========================================================================== */
.transfer-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.transfer-table th, .transfer-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
}

.transfer-table th {
  background: rgba(255, 255, 255, 0.04);
  color: #e2e8f0;
  font-weight: 700;
}

.memo-alert-card {
  margin-top: 24px;
  background: rgba(234, 179, 8, 0.08);
  border: 1px solid rgba(234, 179, 8, 0.35);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.memo-alert-card .alert-icon {
  font-size: 26px;
  flex-shrink: 0;
  line-height: 1;
}

.memo-alert-card h4 {
  font-size: 15px;
  color: #fde047;
  margin-bottom: 8px;
}

.memo-alert-card p {
  font-size: 13px;
  color: #e2e8f0;
  line-height: 1.6;
  margin-bottom: 8px;
}

.memo-alert-card p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   15. PoR Verification Steps (New Module)
   ========================================================================== */
.security-box {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px;
}

.security-pillars {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 24px;
}

.pillar-item {
  display: flex;
  gap: 16px;
}

.pillar-icon {
  font-size: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pillar-info h4 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.pillar-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-mini-flow {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
  font-size: 12px;
  color: #cbd5e1;
}

.por-card {
  background: #111520;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.por-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.por-title {
  font-size: 14px;
  font-weight: 700;
  color: #e2e8f0;
}

.live-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
}

.por-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.por-labels {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-bottom: 6px;
  color: #94a3b8;
}

.por-labels strong {
  color: var(--accent-green);
}

.progress-track {
  width: 100%;
  height: 8px;
  background: #1e2638;
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 4px;
}

.por-footer {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

/* ==========================================================================
   16. Security Hardening Checklist (New Module)
   ========================================================================== */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.check-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  transition: var(--transition-fast);
}

.check-card:hover {
  border-color: rgba(0, 255, 135, 0.3);
  transform: translateY(-3px);
}

.check-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-green);
  background: rgba(0, 255, 135, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 12px;
}

.check-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  line-height: 1.4;
}

.check-card p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   17. Glossary Grid (New Module)
   ========================================================================== */
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.glossary-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  transition: var(--transition-fast);
}

.glossary-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(0, 255, 135, 0.2);
}

.term-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: 6px;
}

.term-desc {
  font-size: 12px;
  color: #cbd5e1;
  line-height: 1.6;
}

/* ==========================================================================
   18. Risk Control Principles (New Module)
   ========================================================================== */
.risk-card {
  background: linear-gradient(145deg, #18141e 0%, #10121a 100%);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-lg);
  padding: 44px;
}

.risk-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.risk-rule-box {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 22px;
}

.risk-rule-box h4 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.risk-rule-box p {
  font-size: 13px;
  color: #cbd5e1;
  line-height: 1.6;
}

/* ==========================================================================
   19. App Download Cards
   ========================================================================== */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 22px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition-fast);
}

.download-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
}

.download-card.highlight-card {
  border-color: rgba(0, 255, 135, 0.35);
  background: linear-gradient(160deg, #131a26 0%, #0e121c 100%);
}

.download-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent-gradient);
  color: #000000;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}

.os-icon {
  font-size: 34px;
  margin-bottom: 14px;
}

.os-title {
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.os-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.install-method {
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 12px;
  font-size: 12px;
}

.install-method strong {
  display: block;
  color: #f1f5f9;
  margin-bottom: 4px;
}

.install-method p {
  color: var(--text-secondary);
  line-height: 1.5;
}

.download-card .btn {
  margin-top: auto;
}

/* ==========================================================================
   20. FAQ Accordion
   ========================================================================== */
.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.faq-item.active {
  border-color: rgba(0, 255, 135, 0.35);
  background: rgba(18, 24, 35, 0.9);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.faq-toggle-icon {
  font-size: 20px;
  color: var(--accent-green);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 800px;
  transition: max-height 0.4s ease-in-out;
  padding-bottom: 22px;
}

/* ==========================================================================
   21. About Bianeno & E-E-A-T Section (New Module)
   ========================================================================== */
.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 40px;
  align-items: center;
}

.about-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.eeat-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-sm);
  padding: 16px;
  border: 1px solid var(--border-color);
}

.meta-item {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.meta-item .label {
  color: #94a3b8;
}

.meta-item .val {
  color: #ffffff;
  font-weight: 600;
}

.about-commitment {
  background: rgba(0, 255, 135, 0.04);
  border: 1px solid rgba(0, 255, 135, 0.2);
  border-radius: var(--radius-md);
  padding: 24px;
}

.about-commitment h4 {
  font-size: 15px;
  color: var(--accent-green);
  margin-bottom: 14px;
}

.commitment-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 12px;
  color: #cbd5e1;
  line-height: 1.6;
}

/* ==========================================================================
   22. Bottom CTA Section
   ========================================================================== */
.bottom-cta-section {
  padding-bottom: 60px;
}

.bottom-cta-box {
  background: linear-gradient(135deg, #131b29 0%, #0d121c 100%);
  border: 1px solid rgba(0, 255, 135, 0.35);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.cta-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 250px;
  background: var(--accent-green);
  opacity: 0.12;
  filter: blur(80px);
  border-radius: 50%;
  pointer-events: none;
}

.bottom-cta-title {
  font-size: 32px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  position: relative;
}

.bottom-cta-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 32px;
  position: relative;
}

.bottom-btn-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  position: relative;
}

/* ==========================================================================
   23. Anti-Google-Red Legal & Compliance Footer
   ========================================================================== */
.site-footer {
  background: #08090c;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 100px;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-compliance-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 40px;
}

.compliance-title {
  font-size: 14px;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 12px;
}

.site-footer .compliance-text {
  font-size: 12px;
  line-height: 1.7;
  color: #94a3b8;
  margin-bottom: 8px;
}

.site-footer .compliance-text:last-child {
  margin-bottom: 0;
}

.footer-links-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.brand-col .footer-logo {
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 10px;
}

.footer-domain {
  font-size: 12px;
  color: var(--accent-green);
}

.footer-heading {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-menu a {
  color: var(--text-secondary);
}

.footer-menu a:hover {
  color: var(--accent-green);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-badges {
  display: flex;
  gap: 14px;
}

.badge-item {
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   24. Mobile Sticky Conversion Bar
   ========================================================================== */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 11, 14, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(0, 255, 135, 0.3);
  padding: 10px 16px;
  z-index: 99;
}

.mobile-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 500px;
  margin: 0 auto;
}

.mobile-code-info {
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.mobile-code-info .label {
  font-size: 10px;
  color: var(--text-muted);
}

.mobile-code-info .code {
  font-size: 16px;
  font-weight: 800;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 4px;
}

.copy-pill {
  font-size: 10px;
  background: rgba(0, 255, 135, 0.2);
  color: var(--accent-green);
  padding: 1px 6px;
  border-radius: 3px;
}

.btn-mobile-cta {
  flex-grow: 1;
  padding: 12px 16px;
  font-size: 14px;
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 80px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #1c2230;
  border: 1px solid var(--border-color);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
  z-index: 90;
}

.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--accent-green);
  color: #000000;
  border-color: var(--accent-green);
  transform: translateY(-3px);
}

/* Toast Notification */
.toast-notification {
  position: fixed;
  top: 30px;
  right: 30px;
  background: #141926;
  border: 1px solid var(--accent-green);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  z-index: 1000;
  transform: translateY(-80px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.toast-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-green);
  color: #000000;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}

.toast-title {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
}

.toast-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ==========================================================================
   25. Legal Modals
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #131722;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  transform: scale(0.95);
  transition: transform var(--transition-fast);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

.modal-close:hover {
  color: #ffffff;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
}

/* ==========================================================================
   26. Responsive Queries
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .hero-visual {
    max-width: 580px;
    margin: 0 auto;
    width: 100%;
  }

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

  .calc-wrapper {
    grid-template-columns: 1fr;
    padding: 30px;
  }

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

  .c2c-grid {
    grid-template-columns: 1fr;
  }

  .steps-flow {
    grid-template-columns: 1fr;
  }

  .security-box {
    grid-template-columns: 1fr;
    padding: 30px;
  }

  .risk-pillars-grid {
    grid-template-columns: 1fr;
  }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .footer-links-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 960px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    max-height: calc(100vh - 68px);
    overflow-y: auto;
    background: #0d1017;
    border-bottom: 1px solid var(--border-color);
    padding: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
  }

  .main-nav.open {
    display: block;
  }

  .main-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    font-size: 14px;
  }

  .nav-item.has-dropdown .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    min-width: 100%;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 6px 0 8px 12px;
  }

  .nav-item.has-dropdown .dropdown-menu::before {
    display: none;
  }

  .dropdown-link {
    padding: 8px 12px;
    font-size: 13px;
    border-left: 2px solid rgba(0, 255, 135, 0.2);
    border-radius: 0 6px 6px 0;
    margin-bottom: 3px;
  }

  .dropdown-link:hover {
    border-left-color: var(--accent-green);
  }

  .announcement-content {
    flex-direction: column;
    text-align: center;
    gap: 6px;
  }

  .header-action .btn-copy-sm {
    display: none;
  }

  .hero-title {
    font-size: 26px;
  }

  .invite-action-group {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .ecosystem-grid {
    grid-template-columns: 1fr;
  }

  .glossary-grid {
    grid-template-columns: 1fr;
  }

  .mobile-sticky-bar {
    display: block;
  }

  .bottom-btn-group {
    flex-direction: column;
  }

  .bottom-cta-title {
    font-size: 24px;
  }

  .footer-links-row {
    grid-template-columns: 1fr;
  }

  .toast-notification {
    top: auto;
    bottom: 80px;
    right: 16px;
    left: 16px;
  }
}