:root {
  --c-primary:      #1a3a5c;
  --c-primary-mid:  #234e7a;
  --c-blue:         #2563eb;
  --c-blue-light:   #3b82f6;
  --c-cyan:         #0ea5e9;
  --c-cyan-light:   #38bdf8;
  --c-accent:       #f59e0b;
  --c-bg:           #f8fafd;
  --c-bg-alt:       #eef3fb;
  --c-bg-dark:      #0d2240;
  --c-bg-section:   #f0f5fc;
  --c-white:        #ffffff;
  --c-text:         #0f1f35;
  --c-text-mid:     #334e6e;
  --c-text-light:   #607590;
  --c-text-muted:   #94a3b8;
  --c-border:       #d8e4f0;
  --c-border-light: #e8f0f8;

  --font:      -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  --r-sm:  6px;
  --r-md:  12px;
  --r-lg:  20px;
  --r-xl:  32px;
  --r-full: 999px;

  --sh-sm:  0 1px 4px rgba(26,58,92,.07);
  --sh-md:  0 4px 20px rgba(26,58,92,.10);
  --sh-lg:  0 8px 40px rgba(26,58,92,.13);
  --sh-xl:  0 16px 60px rgba(26,58,92,.16);

  --transition: .22s ease;
  --transition-slow: .4s ease;

  --max-w: 1200px;
  --nav-h: 68px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

a:hover { color: var(--c-cyan); }

ul, ol { list-style: none; }

button {
  cursor: pointer;
  font-family: var(--font);
  border: none;
  background: none;
}

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

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-blue);
  background: rgba(37,99,235,.09);
  padding: 4px 14px;
  border-radius: var(--r-full);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--c-text-light);
  max-width: 600px;
  line-height: 1.75;
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-head .section-subtitle {
  margin: 0 auto;
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border-light);
  transition: box-shadow var(--transition);
}

.site-nav.scrolled {
  box-shadow: var(--sh-md);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-cyan) 100%);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: .85rem;
  letter-spacing: -.02em;
}

.nav-logo-text {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--c-primary);
  letter-spacing: -.02em;
}

.nav-logo-text span {
  color: var(--c-blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.nav-links a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--c-text-mid);
  padding: 6px 12px;
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--c-blue);
  background: rgba(37,99,235,.07);
}

.nav-cta {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-nav-cta {
  font-size: .875rem;
  font-weight: 600;
  color: var(--c-white);
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-cyan) 100%);
  padding: 9px 22px;
  border-radius: var(--r-full);
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.btn-nav-cta:hover {
  opacity: .92;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(37,99,235,.35);
  color: var(--c-white);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  margin-left: auto;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--c-white);
  border-bottom: 1px solid var(--c-border);
  z-index: 999;
  padding: 16px 24px 24px;
  box-shadow: var(--sh-lg);
}

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

.nav-mobile a {
  display: block;
  font-size: .95rem;
  font-weight: 500;
  color: var(--c-text-mid);
  padding: 12px 0;
  border-bottom: 1px solid var(--c-border-light);
  text-decoration: none;
}

.nav-mobile a:last-child { border-bottom: none; }

.nav-mobile a:hover { color: var(--c-blue); }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--c-white);
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-cyan) 100%);
  padding: 13px 30px;
  border-radius: var(--r-full);
  transition: all var(--transition);
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(37,99,235,.38);
  color: var(--c-white);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--c-blue);
  background: transparent;
  padding: 12px 28px;
  border-radius: var(--r-full);
  border: 2px solid var(--c-blue);
  transition: all var(--transition);
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--c-blue);
  color: var(--c-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37,99,235,.28);
}

#home {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 100px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, #f0f7ff 0%, #e8f3ff 40%, #f4f9ff 100%);
}

#home::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.08) 0%, transparent 70%);
  pointer-events: none;
}

#home::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -60px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,233,.07) 0%, transparent 70%);
  pointer-events: none;
}

.portal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.portal-text {
  position: relative;
  z-index: 1;
}

.portal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--c-blue);
  background: rgba(37,99,235,.1);
  border: 1px solid rgba(37,99,235,.2);
  padding: 5px 14px;
  border-radius: var(--r-full);
  margin-bottom: 24px;
}

.portal-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-cyan);
  flex-shrink: 0;
}

.portal-h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -.02em;
}

.portal-h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--c-blue), var(--c-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.portal-desc {
  font-size: 1.05rem;
  color: var(--c-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 500px;
}

.portal-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.portal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.portal-tag {
  font-size: .8rem;
  font-weight: 500;
  color: var(--c-text-mid);
  background: var(--c-white);
  border: 1px solid var(--c-border);
  padding: 5px 14px;
  border-radius: var(--r-full);
  box-shadow: var(--sh-sm);
}

.portal-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.portal-card-wrap {
  position: relative;
  width: 100%;
  max-width: 480px;
}

.portal-hero-img {
  width: 100%;
  border-radius: var(--r-xl);
  box-shadow: var(--sh-xl);
  object-fit: cover;
  aspect-ratio: 4/3;
  background: var(--c-bg-alt);
}

.portal-float-card {
  position: absolute;
  background: var(--c-white);
  border-radius: var(--r-md);
  box-shadow: var(--sh-lg);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--c-primary);
}

.portal-float-card.card-tl {
  top: -20px;
  left: -30px;
  animation: float-a 3.5s ease-in-out infinite;
}

.portal-float-card.card-br {
  bottom: 20px;
  right: -24px;
  animation: float-b 4s ease-in-out infinite;
}

.portal-float-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-blue), var(--c-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  flex-shrink: 0;
}

.portal-float-text { line-height: 1.3; }
.portal-float-text small {
  display: block;
  font-size: .75rem;
  font-weight: 400;
  color: var(--c-text-muted);
}

@keyframes float-a {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes float-b {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

#services {
  padding: 100px 0;
  background: var(--c-white);
}

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

.service-card {
  padding: 32px 28px;
  border-radius: var(--r-lg);
  border: 1.5px solid var(--c-border-light);
  background: var(--c-white);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:nth-child(1)::before { background: linear-gradient(90deg, #2563eb, #0ea5e9); }
.service-card:nth-child(2)::before { background: linear-gradient(90deg, #7c3aed, #a855f7); }
.service-card:nth-child(3)::before { background: linear-gradient(90deg, #059669, #10b981); }
.service-card:nth-child(4)::before { background: linear-gradient(90deg, #d97706, #f59e0b); }
.service-card:nth-child(5)::before { background: linear-gradient(90deg, #dc2626, #ef4444); }
.service-card:nth-child(6)::before { background: linear-gradient(90deg, #0284c7, #38bdf8); }

.service-card:hover {
  border-color: transparent;
  box-shadow: var(--sh-lg);
  transform: translateY(-4px);
}

.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-card:nth-child(1) .service-icon { background: rgba(37,99,235,.1); color: #2563eb; }
.service-card:nth-child(2) .service-icon { background: rgba(124,58,237,.1); color: #7c3aed; }
.service-card:nth-child(3) .service-icon { background: rgba(5,150,105,.1); color: #059669; }
.service-card:nth-child(4) .service-icon { background: rgba(217,119,6,.1); color: #d97706; }
.service-card:nth-child(5) .service-icon { background: rgba(220,38,38,.1); color: #dc2626; }
.service-card:nth-child(6) .service-icon { background: rgba(2,132,199,.1); color: #0284c7; }

.service-icon img { width: 28px; height: 28px; }

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 10px;
}

.service-card p {
  font-size: .875rem;
  color: var(--c-text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .825rem;
  font-weight: 600;
  color: var(--c-blue);
  text-decoration: none;
  transition: gap var(--transition);
}

.service-link:hover { gap: 10px; color: var(--c-cyan); }
.service-link img { width: 14px; height: 14px; }

#wallet {
  padding: 100px 0;
  background: var(--c-bg-section);
}

.wallet-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.wallet-feature-row.reverse {
  direction: rtl;
}

.wallet-feature-row.reverse > * {
  direction: ltr;
}

.wallet-feat-text { }

.wallet-feat-text .section-label { }

.wallet-feat-title {
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.wallet-feat-desc {
  font-size: .9375rem;
  color: var(--c-text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.wallet-feat-checks {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.wallet-feat-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .875rem;
  color: var(--c-text-mid);
}

.wallet-feat-check img {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--c-blue);
}

.wallet-feat-img-wrap {
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--sh-xl);
  background: var(--c-bg-alt);
}

.wallet-feat-img-wrap img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
}

.wallet-grid-title {
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 700;
  color: var(--c-primary);
  text-align: center;
  margin-bottom: 10px;
}

.wallet-grid-sub {
  font-size: .9375rem;
  color: var(--c-text-light);
  text-align: center;
  margin-bottom: 40px;
}

.wallet-icon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.wallet-icon-card {
  background: var(--c-white);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  border: 1.5px solid var(--c-border-light);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.wallet-icon-card:hover {
  box-shadow: var(--sh-md);
  border-color: rgba(37,99,235,.2);
  transform: translateY(-3px);
}

.wic-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-sm);
  background: linear-gradient(135deg, rgba(37,99,235,.1), rgba(14,165,233,.1));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-blue);
}

.wic-icon img { width: 24px; height: 24px; }

.wallet-icon-card h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 4px;
}

.wallet-icon-card p {
  font-size: .8125rem;
  color: var(--c-text-light);
  line-height: 1.65;
}

#download {
  padding: 100px 0;
  background: var(--c-white);
}

.download-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.download-visual {
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--sh-xl);
  background: var(--c-bg-alt);
}

.download-visual img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}

.download-platforms {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}

.platform-tab {
  border: 1.5px solid var(--c-border-light);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--c-white);
  cursor: pointer;
  transition: all var(--transition);
}

.platform-tab:hover {
  border-color: var(--c-blue);
  box-shadow: var(--sh-sm);
}

.platform-tab-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
}

.platform-tab-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.platform-tab:nth-child(1) .platform-tab-icon { background: rgba(37,99,235,.1); color: var(--c-blue); }
.platform-tab:nth-child(2) .platform-tab-icon { background: rgba(16,185,129,.1); color: #059669; }
.platform-tab:nth-child(3) .platform-tab-icon { background: rgba(245,158,11,.1); color: #d97706; }

.platform-tab-icon img { width: 22px; height: 22px; }

.platform-tab-info h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 2px;
}

.platform-tab-info p {
  font-size: .8rem;
  color: var(--c-text-muted);
}

.download-steps {
  background: var(--c-bg-section);
  border-radius: var(--r-md);
  padding: 24px;
  border: 1.5px solid var(--c-border-light);
}

.download-steps h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 16px;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.step-num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-blue), var(--c-cyan));
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.step-text {
  font-size: .85rem;
  color: var(--c-text-mid);
  line-height: 1.65;
}

#account {
  padding: 100px 0;
  background: var(--c-bg-section);
}

.account-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.account-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.account-card {
  background: var(--c-white);
  border-radius: var(--r-md);
  padding: 22px 20px;
  border: 1.5px solid var(--c-border-light);
  transition: all var(--transition);
}

.account-card:hover {
  border-color: rgba(37,99,235,.25);
  box-shadow: var(--sh-md);
  transform: translateY(-2px);
}

.account-card-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--r-sm);
  background: rgba(37,99,235,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-blue);
  margin-bottom: 14px;
}

.account-card-icon img { width: 20px; height: 20px; }

.account-card h4 {
  font-size: .875rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 6px;
}

.account-card p {
  font-size: .8rem;
  color: var(--c-text-light);
  line-height: 1.6;
}

.account-visual {
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--sh-xl);
  background: var(--c-bg-alt);
}

.account-visual img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

#security {
  padding: 100px 0;
  background: var(--c-bg-dark);
  position: relative;
  overflow: hidden;
}

#security::before {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,233,.12) 0%, transparent 70%);
}

#security .section-label {
  background: rgba(56,189,248,.15);
  color: var(--c-cyan-light);
  border: 1px solid rgba(56,189,248,.2);
}

#security .section-title { color: #f0f8ff; }
#security .section-subtitle { color: rgba(240,248,255,.6); }

.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 8px;
}

.security-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r-lg);
  padding: 30px 26px;
  transition: all var(--transition);
}

.security-card:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(56,189,248,.25);
  transform: translateY(-3px);
}

.security-card-num {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--c-cyan);
  margin-bottom: 12px;
  font-family: var(--font);
}

.security-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: rgba(14,165,233,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-cyan-light);
  margin-bottom: 18px;
}

.security-icon img { width: 26px; height: 26px; }

.security-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #e2f0ff;
  margin-bottom: 10px;
}

.security-card p {
  font-size: .855rem;
  color: rgba(200,220,240,.7);
  line-height: 1.72;
}

#help {
  padding: 100px 0;
  background: var(--c-white);
}

.help-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.help-terms {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.help-term {
  padding: 24px 26px;
  border-radius: var(--r-md);
  border-left: 4px solid var(--c-blue);
  background: var(--c-bg-section);
  transition: all var(--transition);
}

.help-term:hover {
  background: var(--c-bg-alt);
  box-shadow: var(--sh-sm);
}

.help-term h4 {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 8px;
}

.help-term p {
  font-size: .855rem;
  color: var(--c-text-light);
  line-height: 1.75;
}

.help-term p em {
  font-style: normal;
  color: var(--c-blue);
  font-weight: 600;
}

.help-visual-wrap {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
}

.help-visual {
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--sh-xl);
  background: var(--c-bg-alt);
  margin-bottom: 24px;
}

.help-visual img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.help-tip {
  background: linear-gradient(135deg, rgba(37,99,235,.06), rgba(14,165,233,.06));
  border: 1.5px solid rgba(37,99,235,.15);
  border-radius: var(--r-md);
  padding: 20px 22px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.help-tip-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  background: rgba(37,99,235,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-blue);
}

.help-tip-icon img { width: 20px; height: 20px; }

.help-tip-text {
  font-size: .855rem;
  color: var(--c-text-mid);
  line-height: 1.7;
}

.help-tip-text strong {
  color: var(--c-primary);
  display: block;
  margin-bottom: 4px;
}

#qa {
  padding: 100px 0;
  background: var(--c-bg-section);
}

.qa-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.qa-item {
  background: var(--c-white);
  border-radius: var(--r-md);
  border: 1.5px solid var(--c-border-light);
  overflow: hidden;
  transition: all var(--transition);
}

.qa-item:hover {
  border-color: rgba(37,99,235,.2);
  box-shadow: var(--sh-sm);
}

.qa-item.open {
  border-color: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,.08);
}

.qa-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  user-select: none;
}

.qa-q-text {
  font-size: .9rem;
  font-weight: 600;
  color: var(--c-primary);
  line-height: 1.45;
}

.qa-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  color: var(--c-text-light);
  font-size: 1.1rem;
  line-height: 1;
}

.qa-item.open .qa-toggle {
  background: var(--c-blue);
  border-color: var(--c-blue);
  color: #fff;
  transform: rotate(45deg);
}

.qa-answer {
  display: none;
  padding: 0 22px 20px;
  font-size: .855rem;
  color: var(--c-text-light);
  line-height: 1.78;
  border-top: 1px solid var(--c-border-light);
  padding-top: 16px;
}

.qa-item.open .qa-answer { display: block; }

#contact {
  padding: 100px 0;
  background: var(--c-white);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info-section h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--c-border-light);
}

.contact-entries {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}

.contact-entry {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-entry-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  background: var(--c-bg-section);
  border: 1.5px solid var(--c-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-blue);
}

.contact-entry-icon img { width: 20px; height: 20px; }

.contact-entry-text { }

.contact-entry-text dt {
  font-size: .8rem;
  font-weight: 600;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 3px;
}

.contact-entry-text dd {
  font-size: .9375rem;
  color: var(--c-text-mid);
  font-weight: 500;
}

.contact-entry-text dd a {
  color: var(--c-blue);
}

.contact-biz {
  background: var(--c-bg-section);
  border-radius: var(--r-md);
  padding: 24px;
  border: 1.5px solid var(--c-border-light);
}

.contact-biz h4 {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 10px;
}

.contact-biz p {
  font-size: .855rem;
  color: var(--c-text-light);
  line-height: 1.75;
}

.contact-brand-card {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-mid) 100%);
  border-radius: var(--r-xl);
  padding: 40px 36px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.contact-brand-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(14,165,233,.2);
}

.contact-brand-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(37,99,235,.2);
}

.cbc-logo {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -.03em;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.cbc-desc {
  font-size: .9rem;
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  max-width: 320px;
}

.cbc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.cbc-tag {
  font-size: .78rem;
  font-weight: 600;
  color: rgba(255,255,255,.9);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  padding: 5px 14px;
  border-radius: var(--r-full);
}

.site-footer {
  background: #08192e;
  color: rgba(255,255,255,.5);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: rgba(255,255,255,.85);
  letter-spacing: -.02em;
}

.footer-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: .82rem;
  color: rgba(255,255,255,.45);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav a:hover { color: rgba(255,255,255,.8); }

.footer-copy {
  font-size: .82rem;
  color: rgba(255,255,255,.35);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .55s ease, transform .55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }
.reveal-delay-5 { transition-delay: .5s; }
.reveal-delay-6 { transition-delay: .6s; }

.seo-strip {
  background: var(--c-bg-alt);
  padding: 14px 0;
  border-top: 1px solid var(--c-border-light);
  border-bottom: 1px solid var(--c-border-light);
}

.seo-strip .container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
}

.seo-strip span {
  font-size: .82rem;
  font-weight: 500;
  color: var(--c-text-muted);
  padding: 4px 12px;
  border-radius: var(--r-full);
  background: var(--c-white);
  border: 1px solid var(--c-border-light);
}

.wallet-info-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  background: var(--c-white);
  border-radius: var(--r-xl);
  padding: 48px;
  margin-bottom: 72px;
  box-shadow: var(--sh-md);
  border: 1.5px solid var(--c-border-light);
}

.wallet-info-band-img {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-lg);
}

.wallet-info-band-img img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 3/2;
  display: block;
}

.wallet-info-band-text .wallet-feat-title { margin-top: 10px; }

.security-extra {
  margin-top: 48px;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--sh-xl);
}

.security-extra img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 16/5;
  display: block;
  filter: brightness(.88) saturate(.7);
}

@media (max-width: 1024px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .security-grid { grid-template-columns: repeat(2, 1fr); }
  .wallet-icon-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
  .wallet-info-band { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  #home { padding-top: calc(var(--nav-h) + 50px); padding-bottom: 60px; }
  .portal-grid { grid-template-columns: 1fr; gap: 40px; }
  .portal-float-card.card-tl { display: none; }
  .portal-float-card.card-br { display: none; }
  .portal-h1 { font-size: 2rem; }

  #services { padding: 60px 0; }
  .service-grid { grid-template-columns: 1fr; gap: 16px; }

  #wallet { padding: 60px 0; }
  .wallet-feature-row { grid-template-columns: 1fr; gap: 30px; }
  .wallet-feature-row.reverse { direction: ltr; }
  .wallet-icon-grid { grid-template-columns: 1fr 1fr; }

  #download { padding: 60px 0; }
  .download-layout { grid-template-columns: 1fr; }

  #account { padding: 60px 0; }
  .account-layout { grid-template-columns: 1fr; }
  .account-cards { grid-template-columns: 1fr; }

  #security { padding: 60px 0; }
  .security-grid { grid-template-columns: 1fr; gap: 16px; }

  #help { padding: 60px 0; }
  .help-layout { grid-template-columns: 1fr; }
  .help-visual-wrap { position: static; }

  #qa { padding: 60px 0; }
  .qa-layout { grid-template-columns: 1fr; }

  #contact { padding: 60px 0; }
  .contact-layout { grid-template-columns: 1fr; }

  .section-head { margin-bottom: 36px; }
  .wallet-feature-row { margin-bottom: 48px; }
  .wallet-info-band { padding: 28px 20px; margin-bottom: 40px; }
  .security-extra img { aspect-ratio: 16/7; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .portal-actions { flex-direction: column; align-items: flex-start; }
  .wallet-icon-grid { grid-template-columns: 1fr; }
  .account-cards { grid-template-columns: 1fr; }
}