/* ==========================================================================
   LIANGSHENG INTERNATIONAL LIMITED — main stylesheet
   Dark theme · royal-blue accent (#3B82F6) · warm-gold secondary (#E2C476)
   ========================================================================== */

:root {
  --bg: #0B0E14;
  --bg-soft: #0F1420;
  --surface: #121826;
  --surface-2: #171F30;
  --border: #232C3E;
  --border-strong: #2E3A52;
  --text: #E8EAED;
  --text-soft: #C3CAD6;
  --muted: #96A0B2;
  --muted-2: #6E7A8D;
  --blue: #3B82F6;
  --blue-light: #60A5FA;
  --blue-bright: #93C5FD;
  --blue-dark: #2563EB;
  --blue-deep: #1D4ED8;
  --gold: #E2C476;
  --gold-soft: #EDD89E;
  --nav-h: 76px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.45);
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-size: 16px;
  line-height: 1.7;
  font-family: "Segoe UI", "Inter", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

a:hover {
  color: var(--blue-bright);
}

ul {
  list-style: none;
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  position: relative;
  padding: 104px 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-light);
  margin-bottom: 18px;
}

.section-label::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--gold));
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 720px;
}

.section-title .hl {
  color: var(--blue-light);
}

.section-sub {
  margin-top: 18px;
  color: var(--muted);
  max-width: 640px;
  font-size: 1.06rem;
}

/* ==========================================================================
   Chip navigation (.chip-nav)
   ========================================================================== */

.chip-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.chip-nav .chip-nav-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

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

.chip-nav .wordmark {
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text);
  white-space: nowrap;
}

.chip-nav .wordmark em {
  font-style: normal;
  color: var(--blue-light);
}

/* CSS-drawn microchip */
.chip {
  position: relative;
  display: inline-block;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

.chip .chip-body {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue) 60%, var(--blue-light));
  border-radius: 4px;
  box-shadow: 0 0 14px rgba(59, 130, 246, 0.55), inset 0 0 0 1px var(--blue-bright);
}

.chip .chip-body::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: #0B0E14;
  box-shadow: 0 0 6px rgba(11, 14, 20, 0.9);
}

.chip .pin {
  position: absolute;
  background-color: var(--blue-bright);
  border-radius: 1px;
}

.chip .pin-top {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 6px;
}

.chip .pin-bottom {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 6px;
}

.chip .pin-left {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 4px;
}

.chip .pin-right {
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 4px;
}

.chip-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chip-nav .nav-links a {
  display: inline-block;
  padding: 9px 15px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-soft);
  border-radius: 9px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.chip-nav .nav-links a:hover {
  color: var(--text);
  background-color: var(--surface);
}

.chip-nav .nav-cta {
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 0.98rem;
  font-weight: 700;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--blue);
  color: #06111F;
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background-color: var(--blue-light);
  color: #06111F;
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.45);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue-bright);
}

.btn-gold {
  background-color: var(--gold);
  color: #221a08;
  box-shadow: 0 10px 26px rgba(226, 196, 118, 0.28);
}

.btn-gold:hover {
  background-color: var(--gold-soft);
  color: #221a08;
}

.btn-sm {
  padding: 10px 18px;
  font-size: 0.9rem;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero — network topology (.network-hero)
   ========================================================================== */

.network-hero {
  position: relative;
  padding-top: calc(var(--nav-h) + 84px);
  padding-bottom: 96px;
  background:
    radial-gradient(1100px 520px at 85% -10%, rgba(59, 130, 246, 0.16), transparent 60%),
    radial-gradient(800px 420px at 0% 0%, rgba(226, 196, 118, 0.08), transparent 55%),
    var(--bg);
  overflow: hidden;
}

.network-hero .hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.network-hero .hero-copy .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background-color: var(--surface);
  color: var(--blue-bright);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 26px;
}

.network-hero .hero-kicker .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--gold);
  box-shadow: 0 0 10px var(--gold);
}

.network-hero h1 {
  font-size: clamp(2.3rem, 5.2vw, 3.9rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}

.network-hero h1 .line {
  display: block;
}

.network-hero h1 .hl {
  color: var(--blue-light);
  position: relative;
}

.network-hero h1 .hl::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--gold), transparent);
  border-radius: 4px;
  z-index: -1;
}

.network-hero .hero-sub {
  margin-top: 24px;
  font-size: 1.14rem;
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 540px;
}

.network-hero .hero-cta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.network-hero .hero-note {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: 0.9rem;
}

.network-hero .hero-note .badge-strip {
  display: flex;
  gap: 10px;
}

.network-hero .hero-note .tag {
  padding: 5px 12px;
  border-radius: 7px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Network topology diagram (CSS-drawn nodes + SVG connective lines) */
.topology {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  margin-left: auto;
}

.topology .topology-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 5px rgba(59, 130, 246, 0.35));
}

.topology .node {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 35% 35%, var(--blue-bright), var(--blue) 55%, var(--blue-dark));
  box-shadow: 0 0 0 1px rgba(11, 14, 20, 0.8), 0 0 18px 3px rgba(59, 130, 246, 0.55);
}

.topology .node::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background-color: #FFFFFF;
  box-shadow: 0 0 8px 2px rgba(255, 255, 255, 0.75);
}

.topology .node.hub {
  width: 28px;
  height: 28px;
  background: radial-gradient(circle at 35% 35%, var(--gold-soft), var(--gold) 55%, #B8913F);
  box-shadow: 0 0 0 1px rgba(11, 14, 20, 0.8), 0 0 26px 5px rgba(226, 196, 118, 0.55);
}

.topology .node.hub::before {
  width: 9px;
  height: 9px;
}

.topology .node.small {
  width: 13px;
  height: 13px;
  box-shadow: 0 0 0 1px rgba(11, 14, 20, 0.8), 0 0 12px 2px rgba(96, 165, 250, 0.5);
}

/* ==========================================================================
   Statement row (full-width)
   ========================================================================== */

.statement-section {
  padding: 120px 0;
  background:
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.statement-section .statement-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 64px;
  align-items: center;
}

.statement-section .statement-lead {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.statement-section .statement-lead .hl {
  color: var(--blue-light);
}

.statement-section .statement-lead .gold {
  color: var(--gold);
}

.statement-section .statement-body {
  color: var(--muted);
  font-size: 1.06rem;
}

.statement-section .statement-body p + p {
  margin-top: 16px;
}

.stat-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  padding: 26px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--surface);
}

.stat-card .stat-value {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
}

.stat-card .stat-value .suffix {
  color: var(--blue-light);
}

.stat-card .stat-label {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}

/* ==========================================================================
   Bento grid
   ========================================================================== */

.bento-section {
  padding: 120px 0;
}

.bento-section .section-head {
  max-width: 640px;
  margin-bottom: 52px;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 210px;
  gap: 20px;
}

.bento-cell {
  position: relative;
  padding: 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface), var(--bg-soft));
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.bento-cell:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: var(--shadow);
}

.bento-cell .cell-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #06111F;
  margin-bottom: 18px;
}

.bento-cell.gold .cell-icon {
  background: linear-gradient(135deg, #B8913F, var(--gold));
  color: #221a08;
}

.bento-cell h3 {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
}

.bento-cell p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.bento-cell .cell-meta {
  position: absolute;
  left: 30px;
  bottom: 24px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-light);
}

.bento-cell.span-4 {
  grid-column: span 4;
}

.bento-cell.span-2 {
  grid-column: span 2;
}

.bento-cell.span-3 {
  grid-column: span 3;
}

.bento-cell.span-6 {
  grid-column: span 6;
}

.bento-cell.wide {
  background:
    radial-gradient(700px 300px at 100% 0%, rgba(59, 130, 246, 0.22), transparent 60%),
    linear-gradient(180deg, var(--surface), var(--bg-soft));
}

.bento-cell.wide p {
  max-width: 480px;
}

/* ==========================================================================
   Process (numbered 01-05)
   ========================================================================== */

.process-section {
  padding: 120px 0;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process-section .section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}

.process-step {
  position: relative;
  padding: 0 22px;
}

.process-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 27px;
  right: 0;
  width: calc(100% - 44px);
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--border-strong));
}

.process-step .step-num {
  position: relative;
  z-index: 1;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.05rem;
  color: #06111F;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.35);
}

.process-step.gold .step-num {
  background: linear-gradient(135deg, #B8913F, var(--gold));
  color: #221a08;
  box-shadow: 0 10px 24px rgba(226, 196, 118, 0.28);
}

.process-step h3 {
  margin-top: 20px;
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--text);
}

.process-step p {
  margin-top: 10px;
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ==========================================================================
   Comparison table
   ========================================================================== */

.compare-section {
  padding: 120px 0;
}

.compare-section .section-head {
  max-width: 660px;
  margin-bottom: 52px;
}

.compare-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background-color: var(--surface);
}

.compare-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 20px 22px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.compare-table thead th {
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--text);
  background-color: var(--surface-2);
}

.compare-table thead th.feature-col {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.compare-table tbody th {
  font-weight: 600;
  color: var(--text-soft);
  width: 240px;
}

.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table td {
  color: var(--muted);
}

.compare-table .tier-name {
  color: var(--blue-bright);
  font-weight: 800;
}

.compare-table .tier-name.gold {
  color: var(--gold);
}

.compare-table .featured {
  background: rgba(59, 130, 246, 0.06);
}

.compare-table .badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  background: rgba(59, 130, 246, 0.18);
  color: var(--blue-bright);
}

.compare-table .check {
  color: var(--gold);
  font-weight: 800;
}

.compare-table .dash {
  color: var(--muted-2);
}

/* ==========================================================================
   FAQ accordion
   ========================================================================== */

.faq-section {
  padding: 120px 0;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.faq-section .faq-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: start;
}

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

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--surface);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--text);
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--blue-bright);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--blue-light);
  background: rgba(59, 130, 246, 0.12);
  transition: transform 0.25s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s ease;
}

.faq-answer-inner {
  padding: 0 24px 24px;
  color: var(--muted);
  line-height: 1.7;
}

/* ==========================================================================
   Split CTA band
   ========================================================================== */

.cta-band-section {
  padding: 60px 0 120px;
}

.cta-band {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 56px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(700px 320px at 0% 100%, rgba(59, 130, 246, 0.22), transparent 60%),
    linear-gradient(135deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border-strong);
}

.cta-band h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.18;
}

.cta-band h2 .hl {
  color: var(--blue-light);
}

.cta-band p {
  margin-top: 16px;
  color: var(--muted);
  max-width: 520px;
}

.cta-band .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.cta-band .cta-contact {
  margin-top: 14px;
  color: var(--muted-2);
  font-size: 0.92rem;
  text-align: right;
}

.cta-band .cta-contact a {
  color: var(--blue-light);
  font-weight: 700;
}

/* ==========================================================================
   Contact form
   ========================================================================== */

.contact-section {
  padding: 120px 0;
}

.contact-section .contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 28px;
}

.contact-detail {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--surface);
}

.contact-detail .cd-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #06111F;
  font-weight: 800;
}

.contact-detail h4 {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.contact-detail a,
.contact-detail span {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-weight: 600;
}

.contact-form {
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--surface);
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form .field {
  margin-bottom: 16px;
}

.contact-form label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-soft);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 13px 15px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background-color: var(--bg);
  color: var(--text);
  font-size: 0.98rem;
  font-family: inherit;
  transition: border-color 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue);
}

.contact-form textarea {
  min-height: 130px;
  resize: vertical;
}

.contact-form .form-status {
  margin-top: 14px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--blue-bright);
  min-height: 1.4em;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 2px solid var(--blue);
  background-color: var(--bg-soft);
  padding: 72px 0 40px;
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
}

.site-footer .footer-brand p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.94rem;
  max-width: 320px;
}

.site-footer h4 {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  font-weight: 700;
  margin-bottom: 20px;
}

.site-footer .footer-links li {
  margin-bottom: 12px;
}

.site-footer .footer-links a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.site-footer .footer-links a:hover {
  color: var(--blue-bright);
}

.site-footer .footer-contact li {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer .footer-contact a {
  color: var(--text-soft);
  font-weight: 600;
}

.site-footer .footer-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--muted-2);
  font-size: 0.88rem;
}

.site-footer .footer-legal {
  display: flex;
  gap: 24px;
}

.site-footer .footer-legal a {
  color: var(--muted);
}

.site-footer .footer-legal a:hover {
  color: var(--blue-bright);
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */

.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .network-hero .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .topology {
    margin: 0 auto;
    max-width: 420px;
  }

  .statement-section .statement-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

  .bento-cell.span-4,
  .bento-cell.span-2,
  .bento-cell.span-3,
  .bento-cell.span-6 {
    grid-column: span 2;
  }

  .process-list {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .process-step:not(:last-child)::after {
    display: none;
  }

  .faq-section .faq-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .contact-section .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cta-band {
    grid-template-columns: 1fr;
  }

  .cta-band .cta-actions {
    justify-content: flex-start;
  }

  .cta-band .cta-contact {
    text-align: left;
  }

  .site-footer .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .chip-nav .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 20px 24px;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform 0.28s ease;
    z-index: 999;
  }

  .chip-nav .nav-links.open {
    transform: translateY(0);
  }

  .chip-nav .nav-links a {
    padding: 14px 16px;
    font-size: 1.02rem;
    border-radius: 10px;
  }

  .chip-nav .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .network-hero {
    padding-top: calc(var(--nav-h) + 56px);
  }

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

  .bento-cell.span-4,
  .bento-cell.span-2,
  .bento-cell.span-3,
  .bento-cell.span-6 {
    grid-column: span 1;
  }

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

  .contact-form .form-row {
    grid-template-columns: 1fr;
  }

  .site-footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .site-footer .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-band {
    padding: 36px 26px;
  }

  .section,
  .bento-section,
  .process-section,
  .compare-section,
  .faq-section,
  .contact-section {
    padding: 72px 0;
  }
}