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

/* tokens.css loaded first — all --bi-* variables defined there */

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ── Scroll reveal ──────────────────────────────────────────────────────── */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s var(--bi-ease-spring), transform 0.65s var(--bi-ease-spring);
}
.fade-in.visible { opacity: 1; transform: none; }

/* Stagger feature cards when they become visible */
.features-grid .fade-in:nth-child(1)  { transition-delay: 0.00s; }
.features-grid .fade-in:nth-child(2)  { transition-delay: 0.05s; }
.features-grid .fade-in:nth-child(3)  { transition-delay: 0.10s; }
.features-grid .fade-in:nth-child(4)  { transition-delay: 0.15s; }
.features-grid .fade-in:nth-child(5)  { transition-delay: 0.20s; }
.features-grid .fade-in:nth-child(6)  { transition-delay: 0.25s; }
.features-grid .fade-in:nth-child(7)  { transition-delay: 0.05s; }
.features-grid .fade-in:nth-child(8)  { transition-delay: 0.10s; }
.features-grid .fade-in:nth-child(9)  { transition-delay: 0.15s; }
.features-grid .fade-in:nth-child(10) { transition-delay: 0.20s; }

/* ── Header ─────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244,246,250,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bi-border);
  transition: box-shadow 0.3s var(--bi-ease-spring);
}
.site-header.scrolled { box-shadow: var(--bi-shadow-2); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo-link { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--bi-text); }
.header-icon { width: 48px; height: 48px; border-radius: 10px; }
.header-title {
  font-family: var(--bi-font-display);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav a {
  text-decoration: none;
  color: var(--bi-text-muted);
  font-size: 0.9rem;
  font-weight: var(--bi-fw-semibold);
  transition: color 0.2s;
}
.site-nav a:hover { color: var(--bi-primary); }
.btn-nav-signin {
  color: var(--bi-primary) !important;
  font-weight: var(--bi-fw-bold) !important;
}
.btn-nav {
  background: var(--bi-primary);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: var(--bi-radius-btn);
  transition: background 0.2s var(--bi-ease-spring), transform 0.2s var(--bi-ease-spring), box-shadow 0.2s !important;
}
.btn-nav:hover {
  background: var(--bi-primary-pressed) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(14,91,184,0.28) !important;
}

/* ── Mobile nav ──────────────────────────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--bi-text);
  border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

/* Invisible backdrop captures outside taps to close the menu */
.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
}
body.nav-open .nav-backdrop { display: block; }

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

  /* Dropdown falls below the sticky header — avoids backdrop-filter stacking issues on iOS */
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: 8px;
    background: #fff;
    border-bottom: 2px solid var(--bi-border);
    box-shadow: 0 8px 28px rgba(0,0,0,0.14);
    overflow: hidden;
    max-height: 0;
    pointer-events: none;
    transition: max-height 0.28s ease;
    z-index: 100;
  }
  body.nav-open .site-nav {
    max-height: 480px;
    pointer-events: auto;
  }

  .site-nav a:not(.btn-nav):not(.btn-nav-signin) {
    display: block;
    padding: 14px 20px;
    font-size: 1rem;
    border-bottom: 1px solid var(--bi-border);
  }
  .site-nav .btn-nav-signin {
    display: block;
    margin: 10px 16px 4px;
    text-align: center;
  }
  .site-nav .btn-nav {
    display: block;
    margin: 4px 16px 8px;
    padding: 12px 18px;
    text-align: center;
  }

  /* Hamburger → X animation */
  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ── Hero ───────────────────────────────────────────────────────────────── */
.hero {
  padding: 88px 0 72px;
  background:
    radial-gradient(ellipse 55% 50% at 85% 30%, rgba(14,91,184,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 10% 75%, rgba(232,148,18,0.07) 0%, transparent 60%),
    var(--bi-bg);
}
.hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }

.status-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 14px;
  border: 1px solid var(--bi-border-strong);
  border-radius: var(--bi-radius-pill);
  font-size: 0.78rem;
  font-weight: var(--bi-fw-bold);
  color: var(--bi-text-muted);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
  background: var(--bi-surface);
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(31,143,90,0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 4px rgba(31,143,90,0); }
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--bi-success);
  flex-shrink: 0;
  animation: pulse 2.5s ease-in-out infinite;
}

/* Hero entrance animation */
@keyframes heroSlide {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero-text > * { animation: heroSlide 0.7s var(--bi-ease-spring) both; }
.hero-text > *:nth-child(1) { animation-delay: 0.04s; }
.hero-text > *:nth-child(2) { animation-delay: 0.11s; }
.hero-text > *:nth-child(3) { animation-delay: 0.18s; }
.hero-text > *:nth-child(4) { animation-delay: 0.25s; }
.hero-text > *:nth-child(5) { animation-delay: 0.32s; }
.hero-image { animation: heroSlide 0.8s 0.12s var(--bi-ease-spring) both; }

.hero-text h1 {
  font-family: var(--bi-font-display);
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--bi-text);
}
.hero-text p {
  font-size: 1.1rem;
  color: var(--bi-text-muted);
  margin-bottom: 28px;
  max-width: 520px;
  line-height: var(--bi-lh-relaxed);
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-trust {
  font-size: 0.8rem;
  color: var(--bi-text-subtle);
  margin-top: 14px;
  margin-bottom: 0;
}

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bi-primary); color: #fff;
  padding: 12px 24px;
  border-radius: var(--bi-radius-btn);
  text-decoration: none;
  font-weight: var(--bi-fw-bold);
  font-size: 0.92rem;
  transition: background 0.2s var(--bi-ease-spring), transform 0.2s var(--bi-ease-spring), box-shadow 0.2s;
  min-height: var(--bi-min-tap);
}
.btn-primary:hover {
  background: var(--bi-primary-pressed);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14,91,184,0.28);
}

.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bi-surface); color: var(--bi-text);
  border: 1.5px solid var(--bi-border-strong);
  padding: 11px 24px;
  border-radius: var(--bi-radius-btn);
  text-decoration: none;
  font-weight: var(--bi-fw-bold);
  font-size: 0.92rem;
  transition: all 0.2s var(--bi-ease-spring);
  min-height: var(--bi-min-tap);
}
.btn-secondary:hover {
  background: var(--bi-bg);
  border-color: var(--bi-text-muted);
  transform: translateY(-1px);
  box-shadow: var(--bi-shadow-1);
}

.hero-screenshot {
  width: 100%;
  height: auto;
  border-radius: var(--bi-radius-card);
  box-shadow: var(--bi-shadow-3);
  display: block;
}

/* ── Section label ──────────────────────────────────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: var(--bi-fw-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bi-primary);
  margin-bottom: 10px;
}
.section-label::before {
  content: '';
  display: block;
  width: 18px;
  height: 2.5px;
  background: var(--bi-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ── Features ───────────────────────────────────────────────────────────── */
.features {
  padding: 88px 0;
  background: var(--bi-bg);
  border-top: 1px solid var(--bi-border);
  position: relative;
}
.features::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--bi-accent) 0%, var(--bi-primary) 60%, transparent 100%);
  opacity: 0.6;
}
.features-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.features-heading h2 {
  font-family: var(--bi-font-display);
  font-size: 2.2rem;
  font-weight: 400;
  line-height: var(--bi-lh-tight);
  letter-spacing: -0.02em;
  color: var(--bi-text);
  flex-shrink: 0;
  margin-top: 4px;
}
.features-heading p {
  font-size: 0.95rem;
  color: var(--bi-text-muted);
  max-width: 380px;
  line-height: var(--bi-lh-relaxed);
  padding-top: 2px;
}
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
  background: var(--bi-surface);
  border-radius: var(--bi-radius-card);
  padding: 24px 22px;
  border: 1px solid var(--bi-border);
  box-shadow: var(--bi-shadow-1);
  transition: box-shadow 0.3s var(--bi-ease-spring), border-color 0.3s, transform 0.3s var(--bi-ease-spring);
}
.feature-card:hover {
  border-color: rgba(14,91,184,0.22);
  box-shadow: var(--bi-shadow-hover);
  transform: translateY(-4px);
}
.feature-icon { margin-bottom: 14px; }
.feature-icon-box {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--bi-accent-soft);
  display: flex; align-items: center; justify-content: center;
}
.feature-icon-box .material-symbols-outlined {
  font-size: 1.35rem;
  color: var(--bi-accent-pressed);
}
.feature-card h3 {
  font-family: var(--bi-font-display);
  font-size: 1.05rem;
  font-weight: 400;
  margin-bottom: 7px;
  color: var(--bi-text);
  letter-spacing: -0.01em;
}
.feature-card p {
  font-size: 0.875rem;
  color: var(--bi-text-muted);
  line-height: var(--bi-lh-relaxed);
}

/* ── CTA band ───────────────────────────────────────────────────────────── */
.cta-band {
  background: linear-gradient(140deg, #0A3F7A 0%, var(--bi-primary-pressed) 45%, #0E5BB8 100%);
  color: #fff;
  padding: 72px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(232,148,18,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 1; }
.cta-inner h2 {
  font-family: var(--bi-font-display);
  font-size: 2.4rem;
  font-weight: 400;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.cta-inner p { font-size: 1.05rem; opacity: 0.85; margin-bottom: 36px; }
.cta-inner .hero-actions { justify-content: center; }
.cta-band .btn-primary {
  background: var(--bi-accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(232,148,18,0.35);
}
.cta-band .btn-primary:hover {
  background: var(--bi-accent-pressed);
  box-shadow: 0 8px 28px rgba(232,148,18,0.4);
}
.cta-band .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
.cta-band .btn-secondary:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: rgba(255,255,255,0.8);
  box-shadow: none;
}

/* ── FAQ ────────────────────────────────────────────────────────────────── */
.faq { padding: 80px 0; }
.faq h2 {
  font-family: var(--bi-font-display);
  font-size: 2.2rem;
  font-weight: 400;
  text-align: center;
  margin-bottom: 48px;
  color: var(--bi-primary-pressed);
  letter-spacing: -0.02em;
}
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  border: 1px solid var(--bi-border);
  border-radius: var(--bi-radius-card);
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item[open] { border-color: rgba(14,91,184,0.25); }
.faq-section-label {
  font-size: 0.7rem;
  font-weight: var(--bi-fw-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bi-primary);
  padding: 24px 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.faq-section-label::before {
  content: '';
  width: 14px; height: 2px;
  background: var(--bi-accent);
  border-radius: 2px;
  flex-shrink: 0;
}
.faq-section-label:first-child { padding-top: 0; }

.faq-item summary {
  padding: 18px 20px;
  font-weight: var(--bi-fw-semibold);
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--bi-text);
  transition: background 0.15s;
}
.faq-item summary:hover { background: var(--bi-surface-alt); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: 1.2rem;
  color: var(--bi-accent);
  transition: transform 0.25s var(--bi-ease-spring), color 0.2s;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--bi-primary); }
.faq-item p {
  padding: 0 20px 18px;
  font-size: 0.92rem;
  color: var(--bi-text-muted);
  line-height: var(--bi-lh-relaxed);
}
.faq-item p a { color: var(--bi-primary); }

/* ── NFC page ───────────────────────────────────────────────────────────── */
.nfc-page { padding: 64px 0 80px; }
.nfc-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.nfc-text h1 {
  font-family: var(--bi-font-display);
  font-size: 2.4rem;
  font-weight: 400;
  color: var(--bi-primary-pressed);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.nfc-lead {
  font-size: 1.05rem;
  color: var(--bi-text-muted);
  margin-bottom: 40px;
  line-height: var(--bi-lh-relaxed);
}
.nfc-steps { display: flex; flex-direction: column; gap: 24px; margin-bottom: 32px; }
.nfc-step { display: flex; gap: 16px; align-items: flex-start; }
.nfc-step-num {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bi-primary); color: #fff;
  font-weight: var(--bi-fw-bold); font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.nfc-step h3 {
  font-family: var(--bi-font-display);
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 4px;
  color: var(--bi-text);
}
.nfc-step p { font-size: 0.9rem; color: var(--bi-text-muted); line-height: var(--bi-lh-normal); }
.nfc-req { font-size: 0.85rem; color: var(--bi-text-subtle); }
.nfc-video-wrap { position: sticky; top: 88px; }
.nfc-video {
  width: 100%;
  border-radius: var(--bi-radius-card);
  box-shadow: var(--bi-shadow-2);
  background: #000;
}
@media (max-width: 768px) {
  .nfc-inner { grid-template-columns: 1fr; gap: 40px; }
  .nfc-video-wrap { position: static; }
  .nfc-text h1 { font-size: 1.8rem; }
}

/* ── FAQ teaser (home page) ─────────────────────────────────────────────── */
.faq-teaser { padding: 64px 0; background: var(--bi-bg); border-top: 1px solid var(--bi-border); }
.faq-teaser-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.faq-teaser h2 {
  font-family: var(--bi-font-display);
  font-size: 1.75rem;
  font-weight: 400;
  color: var(--bi-primary-pressed);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.faq-teaser p { font-size: 0.95rem; color: var(--bi-text-muted); max-width: 480px; line-height: var(--bi-lh-relaxed); }

/* ── FAQ page ───────────────────────────────────────────────────────────── */
.faq-page { padding: 64px 0 80px; }
.faq-contact {
  max-width: 720px; margin: 32px auto 0;
  text-align: center; font-size: 0.92rem; color: var(--bi-text-muted);
}
.faq-contact a { color: var(--bi-primary); text-decoration: none; font-weight: var(--bi-fw-medium); }
.faq-contact a:hover { text-decoration: underline; }

/* ── FAQ guide link ─────────────────────────────────────────────────────── */
.faq-guide-link { max-width: 720px; margin: 0 auto 28px; }
.faq-guide-link-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--bi-primary-soft);
  border: 1px solid rgba(14,91,184,0.18);
  border-radius: var(--bi-radius-card);
  text-decoration: none;
  color: var(--bi-text);
  transition: background 0.15s, border-color 0.15s;
}
.faq-guide-link-card:hover {
  background: rgba(14,91,184,0.12);
  border-color: rgba(14,91,184,0.35);
}
.faq-guide-link-icon { font-size: 1.4rem; flex-shrink: 0; }
.faq-guide-link-card div { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.faq-guide-link-card strong { font-size: var(--bi-fs-sm); color: var(--bi-primary); font-weight: var(--bi-fw-bold); }
.faq-guide-link-card span { font-size: var(--bi-fs-sm); color: var(--bi-text-muted); }
.faq-guide-link-arrow { font-size: 1rem; color: var(--bi-primary); font-weight: bold; flex-shrink: 0; }

/* ── Prose pages (Privacy, Terms) ──────────────────────────────────────── */
.prose-page { padding: 56px 0 80px; }
.prose-wrap { max-width: 720px; margin: 0 auto; padding: 0 24px; }
.prose-header {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--bi-border);
  margin-bottom: 36px;
}
.prose-header h1 {
  font-family: var(--bi-font-display);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--bi-text);
  line-height: 1.2;
}
.prose-header p {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--bi-text-muted);
}
.prose-callout {
  background: var(--bi-primary-soft);
  border-left: 3px solid var(--bi-primary);
  padding: 14px 18px;
  border-radius: var(--bi-radius-sm);
  margin-bottom: 32px;
  font-size: 0.9rem;
  color: var(--bi-text);
  line-height: var(--bi-lh-relaxed);
}
.prose-wrap h2 {
  font-family: var(--bi-font-display);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--bi-text);
  margin: 36px 0 10px;
  letter-spacing: -0.01em;
}
.prose-wrap p {
  font-size: 0.925rem;
  color: var(--bi-text-muted);
  line-height: var(--bi-lh-relaxed);
  margin-bottom: 12px;
}
.prose-wrap ul {
  margin: 8px 0 12px 20px;
  color: var(--bi-text-muted);
  font-size: 0.925rem;
  line-height: var(--bi-lh-relaxed);
}
.prose-wrap li { margin-bottom: 6px; }
.prose-wrap a { color: var(--bi-primary); text-decoration: none; }
.prose-wrap a:hover { text-decoration: underline; }

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--bi-border);
  padding: 44px 0;
  background: var(--bi-surface);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--bi-primary), var(--bi-accent));
  opacity: 0.5;
}
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.footer-brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--bi-font-display);
  font-size: 1rem;
  font-weight: 400;
  color: var(--bi-text);
}
.footer-icon { width: 28px; height: 28px; border-radius: 6px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a {
  text-decoration: none;
  color: var(--bi-text-muted);
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--bi-primary); }
.footer-copy { font-size: 0.82rem; color: var(--bi-text-subtle); }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-text p { margin: 0 auto 28px; }
  .hero-actions { justify-content: center; }
  .hero-trust { text-align: center; }
  .status-pill { margin-left: auto; margin-right: auto; }
  .hero-image { display: none; }
  .hero-text h1 { font-size: 2.2rem; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .features-heading { flex-direction: column; gap: 12px; }
}
@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
}