:root {
  --pure-black: #000000;
  --deep-black: #050505;
  --soft-panel-black: rgba(0, 0, 0, 0.6);
  --glass-bg: rgba(0, 0, 0, 0.45);
  --neon-cyan: #00F0FF;
  --bright-cyan: #00FFFF;
  --soft-cyan-glow: rgba(0, 240, 255, 0.6);
  --dim-cyan-edge: rgba(0, 240, 255, 0.15);
  --electric-blue: #0088FF;
  --deep-blue: #005CFF;
  --neon-purple: #7A00FF;
  --teal-accent: #00CFC8;
  --text-primary: #E6FAFF;
  --text-secondary: #A8DDE5;
  --text-muted: #6FAAB2;
  --panel-border: rgba(0, 240, 255, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text-primary);
  background:
    radial-gradient(circle at top left, rgba(0, 136, 255, 0.24), transparent 34rem),
    radial-gradient(circle at top right, rgba(122, 0, 255, 0.18), transparent 30rem),
    linear-gradient(135deg, #000 0%, #041320 42%, #000816 70%, #050505 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 70px 70px;
  opacity: 0.28;
}

.aiv-host-header {
  display: block;
  width: 100%;
  height: 110px;
  border: 0;
  background: transparent;
}

a {
  color: var(--bright-cyan);
}

.page {
  position: relative;
  z-index: 1;
  width: min(1450px, calc(100% - 40px));
  margin: 0 auto;
  padding: 26px 0 70px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 16px 22px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(18px);
  box-shadow: 0 0 28px rgba(0, 240, 255, 0.08);
}

.brand {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0;
  white-space: nowrap;
}

.topbar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.topbar nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
  padding: 9px 12px;
  border-radius: 6px;
}

.topbar nav a:hover {
  color: var(--text-primary);
  background: rgba(0, 240, 255, 0.08);
}

.menu-toggle {
  display: none !important;
  width: 46px;
  min-height: 42px;
  padding: 0;
  border: 1px solid rgba(0, 240, 255, 0.22);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.46) !important;
  box-shadow: none !important;
  color: var(--text-primary);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 3px auto;
  border-radius: 999px;
  background: var(--text-primary);
  transition: transform 0.2s, opacity 0.2s;
}

.menu-open .menu-toggle span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.menu-open .menu-toggle span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.hero {
  padding: 96px 0 56px;
  text-align: center;
}

.hero.compact {
  padding: 70px 0 34px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--bright-cyan);
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 1.4px;
}

.hero h1,
.article-view h1 {
  margin: 0;
  font-size: clamp(48px, 8vw, 102px);
  line-height: 0.96;
  color: var(--text-primary);
  text-shadow: 0 0 18px rgba(0, 240, 255, 0.24);
}

.hero p {
  max-width: 1000px;
  margin: 28px auto 0;
  font-size: clamp(18px, 2.2vw, 25px);
  line-height: 1.65;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 22px;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 950;
  text-decoration: none;
  font-size: 15px;
}

.button.primary,
button {
  color: #001014;
  background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
  box-shadow: 0 0 22px rgba(0, 240, 255, 0.22);
}

.button.ghost {
  color: var(--text-primary);
  background: rgba(0, 240, 255, 0.07);
  border: 1px solid rgba(0, 240, 255, 0.22);
}

.feature-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.article-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 380px));
  align-items: stretch;
  margin-top: 34px;
}

.feature-card,
.article-card,
.price-box,
.content-band,
.article-view,
.faq-item {
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(18px);
  box-shadow: inset 0 0 28px rgba(0, 240, 255, 0.025), 0 0 24px rgba(0, 240, 255, 0.07);
}

.feature-card,
.article-card {
  padding: 28px;
}

.feature-card h2,
.article-card h3 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.18;
}

.feature-card p,
.article-card p,
.content-band p,
.article-view p,
.article-body li,
.faq-item p {
  color: var(--text-secondary);
  line-height: 1.75;
}

.content-band,
.price-section,
.article-section {
  margin-top: 86px;
}

.content-band,
.article-view {
  padding: 44px;
}

.content-band h2,
.article-section h2,
.price-box h2,
.faq h2 {
  margin: 0 0 18px;
  font-size: clamp(32px, 4vw, 56px);
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 30px;
}

.split-grid h3 {
  color: var(--bright-cyan);
  margin: 0 0 10px;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 26px;
}

.review-card {
  padding: 22px;
  border: 1px solid rgba(0, 240, 255, 0.14);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.34);
  box-shadow: inset 0 0 22px rgba(0, 240, 255, 0.025);
}

.review-card h3 {
  margin: 0 0 12px;
  color: var(--bright-cyan);
  font-size: 18px;
}

.review-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
}

.ai-readable {
  border-color: rgba(122, 0, 255, 0.34);
}

.ai-system-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.ai-system-grid span {
  display: grid;
  min-height: 54px;
  place-items: center;
  padding: 12px 10px;
  border: 1px solid rgba(0, 240, 255, 0.18);
  border-radius: 8px;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.34);
  font-weight: 900;
  text-align: center;
  line-height: 1.25;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.article-card a {
  color: var(--text-primary);
  text-decoration: none;
}

.article-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
  border-radius: 12px;
}

.article-card {
  min-height: 100%;
  min-width: 0;
  border: 2px solid color-mix(in srgb, var(--aiv-site-primary, var(--bright-cyan)) 72%, var(--aiv-native-text, #ffffff) 28%);
  border-radius: 14px;
  background: color-mix(in srgb, var(--aiv-native-bg, #07111b) 84%, var(--aiv-native-text, #ffffff) 16%);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 color-mix(in srgb, var(--aiv-native-text, #ffffff) 18%, transparent);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.article-card-link:hover .article-card,
.article-card-link:focus-visible .article-card {
  transform: translateY(-5px);
  border-color: var(--aiv-site-primary, var(--bright-cyan));
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24), 0 0 0 3px color-mix(in srgb, var(--aiv-site-primary, var(--bright-cyan)) 24%, transparent);
}

.article-card-link:focus-visible {
  outline: none;
}

.read-article {
  display: inline-block;
  margin-top: 18px;
  color: var(--aiv-site-primary, var(--bright-cyan));
  font-weight: 900;
}

.preparation-card {
  width: min(380px, 100%);
  min-height: 245px;
  padding: 34px;
  border: 2px solid color-mix(in srgb, var(--aiv-site-primary, var(--bright-cyan)) 72%, var(--aiv-native-text, #ffffff) 28%);
  background: color-mix(in srgb, var(--aiv-native-bg, #07111b) 82%, var(--aiv-native-text, #ffffff) 18%);
  box-shadow:
    0 20px 52px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 color-mix(in srgb, var(--aiv-native-text, #ffffff) 20%, transparent);
}

.preparation-card h2 {
  margin-bottom: 18px;
  font-size: clamp(26px, 3vw, 34px);
}

.preparation-card p {
  margin-bottom: 0;
  font-size: 17px;
  line-height: 1.7;
}

.article-thumb {
  display: block;
  aspect-ratio: 16 / 9;
  margin: -4px -4px 18px;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(0, 240, 255, 0.08);
}

.article-thumb img,
.article-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.article-hero-image {
  margin: 30px 0 0;
  overflow: hidden;
  border: 1px solid rgba(0, 240, 255, 0.14);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.34);
}

.article-hero-image img {
  max-height: 430px;
}

.article-hero-image figcaption {
  padding: 10px 14px;
  color: var(--text-muted);
  font-size: 13px;
}

.meta {
  color: var(--text-muted);
  font-size: 14px;
}

.price-box {
  max-width: 880px;
  margin: 0 auto;
  padding: 54px;
  text-align: center;
}

.price {
  margin: 24px 0 34px;
  font-size: clamp(64px, 9vw, 96px);
  font-weight: 950;
  text-shadow: 0 0 18px rgba(0, 240, 255, 0.24);
}

.price-box form button {
  width: min(100%, 520px);
  min-height: 60px;
  font-size: 18px;
}

.article-view {
  max-width: 980px;
  margin: 70px auto 0;
}

.article-view .summary {
  font-size: 22px;
}

.article-body {
  margin-top: 34px;
}

.article-body h2,
.article-body h3 {
  color: var(--text-primary);
  margin-top: 34px;
}

.faq {
  margin-top: 48px;
}

.faq-item {
  padding: 22px;
  margin-top: 16px;
}

.faq-item h3 {
  margin: 0;
  color: var(--bright-cyan);
}

.footer {
  margin-top: 70px;
  text-align: center;
  color: var(--text-muted);
}

.footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin: 12px auto 0;
  font-size: 13px;
}

.footer a:hover {
  color: var(--bright-cyan);
}

.install-wrap {
  position: relative;
  z-index: 1;
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  padding: 54px 0;
}

.install-hero {
  margin-bottom: 28px;
}

.install-hero h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 80px);
}

.install-hero p {
  max-width: 850px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.install-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 22px;
  align-items: start;
}

.public-form,
.notice {
  max-width: 760px;
  margin: 0 auto 24px;
  padding: 24px;
  border: 1px solid rgba(0, 240, 255, 0.14);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.46);
}

.notice.error {
  border-color: rgba(255, 80, 120, 0.55);
  color: #ffd7df;
}

.notice.success {
  border-color: rgba(0, 207, 200, 0.42);
}

.public-form label {
  display: grid;
  gap: 7px;
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-weight: 800;
}

.public-form input,
.public-form textarea {
  width: 100%;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.56);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 8px;
  padding: 13px 14px;
  font: inherit;
}

.access-screen {
  min-height: calc(100vh - 170px);
  display: grid;
  place-items: center;
  align-content: center;
  padding: 52px 0;
}

.access-page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  align-content: center;
  justify-items: center;
  width: 100%;
  margin: 0 auto;
  padding: 42px 20px 34px;
}

.access-page main {
  width: min(680px, 100%);
  display: grid;
  justify-items: center;
}

.access-page .access-screen {
  width: 100%;
  min-height: auto;
  justify-items: center;
  align-content: center;
  padding: 0;
}

.access-page .footer {
  width: min(680px, 100%);
  margin-top: 26px;
}

.back-link {
  justify-self: stretch;
  width: min(540px, 100%);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
}

.access-page .back-link {
  width: min(540px, 100%);
  justify-self: center;
}

.back-link span {
  display: inline-block;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--teal-accent));
}

.access-card {
  width: min(540px, 100%);
  justify-self: center;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.03)), rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(24px) saturate(165%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 34px 100px rgba(0, 0, 0, 0.58);
}

.access-card.wide {
  width: min(640px, 100%);
}

.access-card h1 {
  margin: 0 0 10px;
  font-size: clamp(30px, 6vw, 42px);
}

.access-card p {
  color: var(--text-secondary);
  line-height: 1.55;
}

.access-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.access-form label {
  display: grid;
  gap: 7px;
  color: var(--text-secondary);
  font-weight: 800;
}

.access-form input {
  width: 100%;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  padding: 13px 14px;
  font: inherit;
}

.access-form small {
  color: var(--text-muted);
}

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.access-check {
  display: flex !important;
  grid-template-columns: auto 1fr;
  align-items: flex-start;
  gap: 10px !important;
  font-size: 13px;
  line-height: 1.5;
}

.access-check input {
  width: auto;
  margin-top: 2px;
}

.access-message {
  margin-top: 16px;
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid rgba(0, 240, 255, 0.18);
  font-size: 14px;
}

.access-message.hidden {
  display: none;
}

.access-message.error {
  color: #ffd7df;
  background: rgba(255, 80, 120, 0.10);
  border-color: rgba(255, 80, 120, 0.42);
}

.access-message.success {
  color: #c8fff7;
  background: rgba(0, 207, 200, 0.10);
  border-color: rgba(0, 207, 200, 0.42);
}

.access-links {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

.access-note {
  margin: 16px 0 0;
  text-align: center;
  font-size: 14px;
}

.access-note.admin-link {
  margin-top: 8px;
  font-size: 12px;
}

.access-footer {
  margin: 24px 0 0;
  color: var(--text-muted);
  font-size: 13px;
}

.btn-loading {
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid rgba(0, 16, 20, 0.4);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.logout-row {
  margin-top: 24px;
}

.customer-stats {
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 40px;
}

.download-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.download-steps div {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px;
  border: 1px solid rgba(0, 240, 255, 0.13);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.32);
}

.download-steps strong {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: #001014;
  background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
  border-radius: 50%;
}

.download-steps p {
  margin: 0;
}

code {
  color: var(--bright-cyan);
  overflow-wrap: anywhere;
}

@media (max-width: 1100px) {
  .feature-grid,
  .article-grid,
  .review-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ai-system-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 760px) {
  .page,
  .install-wrap {
    width: min(100% - 28px, 1450px);
    padding-top: 14px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar {
    padding: 14px;
    gap: 14px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 46px;
    align-items: center;
  }

  .topbar nav {
    display: none !important;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    gap: 8px;
    justify-content: stretch;
    grid-column: 1 / -1;
  }

  .topbar.menu-open nav {
    display: grid !important;
  }

  .menu-toggle {
    display: inline-flex !important;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    justify-self: end;
    width: 46px !important;
    min-height: 42px !important;
    padding: 0 !important;
  }

  .topbar nav a {
    padding: 10px;
    text-align: center;
    font-size: 13px;
    background: rgba(0, 240, 255, 0.06);
  }

  .brand {
    white-space: normal;
  }

  .hero {
    padding: 54px 0 34px;
  }

  .hero.compact {
    padding: 42px 0 24px;
  }

  .hero h1,
  .article-view h1 {
    font-size: clamp(38px, 14vw, 58px);
    line-height: 1.02;
  }

  .hero p {
    font-size: 17px;
    line-height: 1.55;
    margin-top: 20px;
  }

  .feature-grid,
  .article-grid,
  .review-grid,
  .ai-system-grid,
  .customer-stats,
  .split-grid,
  .download-steps,
  .install-grid {
    grid-template-columns: 1fr;
  }

  .content-band,
  .article-view,
  .price-box {
    padding: 22px;
  }

  .content-band,
  .price-section,
  .article-section {
    margin-top: 46px;
  }

  .content-band h2,
  .article-section h2,
  .price-box h2,
  .faq h2 {
    font-size: clamp(28px, 10vw, 38px);
  }

  .hero-actions,
  .price-box form {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .button,
  button {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .public-form,
  .notice {
    max-width: none;
    padding: 20px;
  }

  .access-screen {
    min-height: auto;
    padding: 34px 0;
  }

  .access-card {
    padding: 22px;
  }

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

  .access-links {
    display: grid;
    grid-template-columns: 1fr;
    text-align: center;
  }

  .download-steps div {
    grid-template-columns: 38px 1fr;
    padding: 14px;
  }
}

@media (max-width: 430px) {
  .page,
  .install-wrap {
    width: min(100% - 18px, 1450px);
  }

  .topbar nav {
    grid-template-columns: 1fr;
  }

  .content-band,
  .article-view,
  .price-box,
  .public-form,
  .notice {
    padding: 18px;
  }

  .eyebrow {
    font-size: 12px;
    line-height: 1.35;
  }

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