/* Variables */
:root {
  --color-bg: #070B14;
  --color-surface: #101827;
  --color-surface-hover: #162238;
  --color-primary: #06B6D4;
  --color-primary-hover: #22D3EE;
  --color-primary-soft: rgba(6, 182, 212, 0.12);
  --color-primary-pale: #A5F3FC;
  --color-border: rgba(255, 255, 255, 0.12);
  --color-text: #F8FAFC;
  --color-text-secondary: #CBD5E1;
  --color-text-muted: #94A3B8;
  --color-button-text: #031018;
  --container-width: 1180px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-soft: 0 24px 80px rgba(0, 0, 0, 0.42);
  --shadow-glow: 0 0 0 1px rgba(6, 182, 212, 0.2), 0 20px 70px rgba(6, 182, 212, 0.16);
}

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  padding: 0;
}

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

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

table {
  border-collapse: collapse;
  width: 100%;
}

/* Base */
body {
  min-height: 100vh;
  color: var(--color-text);
  background:
    radial-gradient(circle at 18% 4%, rgba(6, 182, 212, 0.17), transparent 30%),
    radial-gradient(circle at 82% 12%, rgba(103, 232, 249, 0.1), transparent 24%),
    linear-gradient(180deg, #070B14 0%, #0A1020 48%, #070B14 100%);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(165, 243, 252, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(165, 243, 252, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  opacity: 0.6;
  pointer-events: none;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(120deg, transparent 0%, rgba(6, 182, 212, 0.05) 36%, transparent 37%),
    linear-gradient(30deg, transparent 0%, rgba(255, 255, 255, 0.035) 50%, transparent 51%);
  content: "";
  pointer-events: none;
}

::selection {
  color: var(--color-text);
  background: rgba(6, 182, 212, 0.42);
}

/* Layout */
.container {
  width: min(100% - 40px, var(--container-width));
  margin: 0 auto;
}

.section {
  padding: 92px 0;
}

.section-muted {
  background: linear-gradient(180deg, rgba(16, 24, 39, 0.24), rgba(7, 11, 20, 0.2));
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-kicker,
.eyebrow {
  margin-bottom: 12px;
  color: var(--color-primary-hover);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: 56px;
}

h2 {
  max-width: 720px;
  font-size: 38px;
}

h3 {
  font-size: 20px;
}

p {
  color: var(--color-text-secondary);
}

.split-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: start;
}

.glass-panel {
  background: linear-gradient(145deg, rgba(16, 24, 39, 0.8), rgba(16, 34, 56, 0.54));
  border: 1px solid rgba(103, 232, 249, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

.text-panel {
  padding: 30px;
}

.text-panel p + p {
  margin-top: 16px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(7, 11, 20, 0.82);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.logo-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

.header-logo {
  width: 152px;
  height: auto;
}

/* Navigation */
.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}

.main-nav a,
.footer-links a,
.text-link,
.faq-item a,
.footer-bottom a {
  color: var(--color-primary-hover);
  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.main-nav a {
  min-height: 40px;
  padding: 9px 12px;
  border-radius: 999px;
  color: var(--color-text-secondary);
  font-size: 14px;
}

.main-nav a:hover {
  color: var(--color-text);
  background: var(--color-primary-soft);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 4px;
}

/* Hero */
.hero-section {
  position: relative;
  overflow: hidden;
  padding: 92px 0 86px;
}

.hero-section::before {
  position: absolute;
  top: 14%;
  right: 8%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.22), transparent 64%);
  content: "";
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 52px;
  align-items: center;
}

.hero-text {
  max-width: 700px;
  margin-top: 22px;
  font-size: 19px;
}

.hero-badges,
.platform-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-badges span,
.platform-strip span {
  min-height: 36px;
  padding: 7px 12px;
  color: var(--color-primary-pale);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(103, 232, 249, 0.25);
  border-radius: 999px;
  font-size: 14px;
}

.hero-actions,
.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-captions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 14px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.hero-visual {
  min-height: 460px;
}

.network-panel {
  position: relative;
  min-height: 460px;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(16, 24, 39, 0.84), rgba(16, 34, 56, 0.48)),
    radial-gradient(circle at 50% 48%, rgba(6, 182, 212, 0.18), transparent 48%);
  border: 1px solid rgba(103, 232, 249, 0.28);
  border-radius: 28px;
  box-shadow: var(--shadow-glow);
  backdrop-filter: blur(18px);
}

.network-panel::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(165, 243, 252, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(165, 243, 252, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  content: "";
}

.network-orbit {
  position: absolute;
  inset: 52px;
  border: 1px solid rgba(103, 232, 249, 0.28);
  border-radius: 999px;
  box-shadow: inset 0 0 34px rgba(6, 182, 212, 0.12);
}

.node {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  box-shadow: 0 0 34px rgba(6, 182, 212, 0.55);
}

.node-main {
  top: 50%;
  left: 50%;
  width: 106px;
  height: 106px;
  color: var(--color-button-text);
  border-radius: 30px;
  font-weight: 800;
  transform: translate(-50%, -50%);
}

.node-one,
.node-two,
.node-three,
.node-four {
  width: 18px;
  height: 18px;
  border-radius: 50%;
}

.node-one {
  top: 11%;
  left: 23%;
}

.node-two {
  top: 24%;
  right: 13%;
}

.node-three {
  right: 22%;
  bottom: 15%;
}

.node-four {
  bottom: 23%;
  left: 13%;
}

.line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(103, 232, 249, 0.75), transparent);
  transform-origin: left center;
}

.line-one {
  top: 44%;
  left: 24%;
  width: 58%;
  transform: rotate(20deg);
}

.line-two {
  top: 55%;
  left: 20%;
  width: 62%;
  transform: rotate(-28deg);
}

.line-three {
  top: 50%;
  left: 18%;
  width: 66%;
}

.status-card {
  position: absolute;
  width: 210px;
  padding: 16px;
  background: rgba(7, 11, 20, 0.68);
  border: 1px solid rgba(103, 232, 249, 0.28);
  border-radius: 16px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
}

.status-card-top {
  top: 36px;
  left: 28px;
}

.status-card-bottom {
  right: 28px;
  bottom: 34px;
}

.status-label {
  display: block;
  color: var(--color-text-muted);
  font-size: 12px;
  text-transform: uppercase;
}

.status-card strong {
  display: block;
  margin-top: 4px;
  color: var(--color-text);
}

/* Sections */
.steps-grid,
.features-grid,
.faq-grid {
  display: grid;
  gap: 18px;
}

.steps-grid {
  grid-template-columns: repeat(4, 1fr);
}

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

.comparison-wrap {
  overflow-x: auto;
  border: 1px solid rgba(103, 232, 249, 0.22);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.comparison-table {
  min-width: 760px;
  background: rgba(16, 24, 39, 0.66);
}

.comparison-table th,
.comparison-table td {
  padding: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.comparison-table th {
  color: var(--color-text);
  background: rgba(6, 182, 212, 0.13);
}

.comparison-table td {
  color: var(--color-text-secondary);
}

.comparison-table tbody tr:hover {
  background: rgba(6, 182, 212, 0.08);
}

.comparison-table tr:last-child td {
  border-bottom: 0;
}

.use-card {
  margin-top: 22px;
  padding: 26px;
  background: linear-gradient(145deg, rgba(16, 24, 39, 0.78), rgba(16, 34, 56, 0.48));
  border: 1px solid rgba(103, 232, 249, 0.2);
  border-radius: var(--radius-lg);
}

.use-card ul {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  list-style: none;
}

.use-card li {
  position: relative;
  padding-left: 24px;
  color: var(--color-text-secondary);
}

.use-card li::before {
  position: absolute;
  top: 10px;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--color-primary-hover);
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.6);
  content: "";
}

/* Cards */
.step-card,
.feature-card,
.faq-item {
  background: linear-gradient(145deg, rgba(16, 24, 39, 0.76), rgba(16, 34, 56, 0.42));
  border: 1px solid rgba(103, 232, 249, 0.18);
  border-radius: var(--radius-md);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(16px);
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.step-card,
.feature-card {
  padding: 24px;
}

.step-card:hover,
.feature-card:hover,
.faq-item:hover {
  background: linear-gradient(145deg, rgba(22, 34, 56, 0.86), rgba(16, 34, 56, 0.52));
  border-color: rgba(103, 232, 249, 0.36);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.step-number,
.icon {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--color-primary-pale);
  background: var(--color-primary-soft);
  border: 1px solid rgba(103, 232, 249, 0.24);
  border-radius: 14px;
  font-weight: 800;
}

.feature-card p,
.step-card p,
.faq-item p {
  margin-top: 12px;
}

.platform-strip {
  margin-top: 24px;
}

/* Buttons */
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  line-height: 1.2;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button-primary {
  color: var(--color-button-text);
  background: var(--color-primary);
  box-shadow: 0 16px 44px rgba(6, 182, 212, 0.24);
}

.button-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 0 0 1px rgba(103, 232, 249, 0.22), 0 20px 56px rgba(6, 182, 212, 0.32);
}

.button-secondary {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(103, 232, 249, 0.3);
}

.button-secondary:hover {
  color: var(--color-primary-pale);
  background: var(--color-primary-soft);
  border-color: rgba(103, 232, 249, 0.48);
  box-shadow: 0 0 34px rgba(6, 182, 212, 0.12);
}

.text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin-top: 18px;
  font-weight: 700;
}

.text-link:hover,
.faq-item a:hover,
.footer-links a:hover,
.footer-bottom a:hover {
  color: var(--color-primary-pale);
}

/* FAQ */
.faq-item {
  padding: 24px;
}

.faq-item a {
  font-weight: 700;
}

/* Footer */
.site-footer {
  padding: 54px 0 26px;
  background: rgba(5, 8, 15, 0.9);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 42px;
}

.footer-logo {
  width: 172px;
  height: auto;
}

.footer-brand p {
  max-width: 410px;
  margin-top: 18px;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-title {
  margin-bottom: 4px;
  color: var(--color-text);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.12;
}

.footer-links a {
  min-height: 30px;
  color: var(--color-text-secondary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 40px;
  padding-top: 22px;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* Responsive */
@media (max-width: 1040px) {
  h1 {
    font-size: 46px;
  }

  h2 {
    font-size: 32px;
  }

  .header-inner {
    flex-wrap: wrap;
    padding: 14px 0;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
  }

  .hero-grid,
  .split-section {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, var(--container-width));
  }

  .section {
    padding: 64px 0;
  }

  .hero-section {
    padding: 60px 0 64px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  .hero-text {
    font-size: 17px;
  }

  .header-inner {
    gap: 14px;
  }

  .header-cta {
    width: 100%;
  }

  .main-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .main-nav a {
    flex: 0 0 auto;
  }

  .hero-actions,
  .inline-actions {
    display: grid;
  }

  .hero-visual,
  .network-panel {
    min-height: 360px;
  }

  .network-orbit {
    inset: 42px 28px;
  }

  .status-card {
    width: 184px;
    padding: 13px;
  }

  .steps-grid,
  .features-grid,
  .faq-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .text-panel,
  .step-card,
  .feature-card,
  .faq-item,
  .use-card {
    padding: 20px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 430px) {
  h1 {
    font-size: 31px;
  }

  h2 {
    font-size: 25px;
  }

  .header-logo {
    width: 138px;
  }

  .hero-badges span,
  .platform-strip span {
    width: 100%;
  }

  .network-panel {
    border-radius: 20px;
  }

  .node-main {
    width: 88px;
    height: 88px;
    border-radius: 24px;
  }

  .status-card-bottom {
    right: 14px;
  }

  .status-card-top {
    left: 14px;
  }
}