/* ---------- Design tokens ---------- */
:root {
  color-scheme: dark;
  --bg: #0b1830;
  --bg-alt: #101f3d;
  --surface: #16274a;
  --surface-border: #263a5e;
  --line-rgb: 38, 58, 94;
  --text: #eef2fb;
  --text-muted: #a9b8d8;
  --accent: #ff8a4f;
  --accent-strong: #ffab7a;
  --accent-contrast: #1a0e07;
  --link: #ff8a4f;
  --focus-ring: #ff8a4f;
  --danger: #ff8a80;
  --navy: #060e20;
  --navy-2: #0e1c37;
  --on-navy: #f3f6fd;
  --on-navy-soft: #92a3c6;
  --radius: 14px;
  --max-width: 1180px;
  --font-sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --transition: 200ms ease;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f8fc;
  --bg-alt: #eef1f8;
  --surface: #ffffff;
  --surface-border: #dbe2ef;
  --line-rgb: 219, 226, 239;
  --text: #12203a;
  --text-muted: #4c5a76;
  --accent: #e0632c;
  --accent-strong: #b8471b;
  --accent-contrast: #1a0e07;
  --link: #b8471b;
  --focus-ring: #b8471b;
  --navy: #0b1830;
  --navy-2: #142544;
  --on-navy: #eef2fb;
  --on-navy-soft: #a9b8d8;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #f6f8fc;
    --bg-alt: #eef1f8;
    --surface: #ffffff;
    --surface-border: #dbe2ef;
    --line-rgb: 219, 226, 239;
    --text: #12203a;
    --text-muted: #4c5a76;
    --accent: #e0632c;
    --accent-strong: #b8471b;
    --accent-contrast: #1a0e07;
    --link: #b8471b;
    --focus-ring: #b8471b;
    --navy: #0b1830;
    --navy-2: #142544;
    --on-navy: #eef2fb;
    --on-navy-soft: #a9b8d8;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--link);
}

h1,
h2,
h3 {
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3.2rem);
  margin: 0 0 1rem;
}

h2 {
  font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.3rem);
  margin: 0 0 0.75rem;
}

h3 {
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

.wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  z-index: 1000;
  transition: top var(--transition);
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
  font-size: 1rem;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
}

.btn-primary:hover {
  background: var(--accent-strong);
}

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

.btn-small {
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
}

.btn-block {
  width: 100%;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--surface-border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition);
}

.icon-btn:hover {
  background: var(--bg-alt);
}

.icon {
  width: 20px;
  height: 20px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(var(--line-rgb), 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding-block: 0.85rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  margin-right: auto;
}

.brand-mark {
  color: var(--accent);
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.05rem;
  white-space: nowrap;
}

.main-nav {
  display: none;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.nav-list a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

.nav-list a:hover {
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.icon-moon {
  display: none;
}

:root[data-theme="light"] .icon-sun {
  display: none;
}
:root[data-theme="light"] .icon-moon {
  display: block;
}

.icon-close {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-menu {
  display: none;
}
.nav-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

@media (min-width: 900px) {
  .main-nav {
    display: block;
  }
  .nav-toggle {
    display: none;
  }
}

@media (max-width: 899px) {
  .main-nav {
    position: fixed;
    inset: 64px 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid rgba(var(--line-rgb), 0.15);
    transform: translateY(-120%);
    transition: transform var(--transition);
  }
  .main-nav.is-open {
    display: block;
    transform: translateY(0);
  }
  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
  }
  .nav-list li {
    border-top: 1px solid rgba(var(--line-rgb), 0.1);
  }
  .nav-list a {
    display: block;
    padding: 0.85rem 0;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(2.5rem, 2rem + 3vw, 5rem);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.trust-strip {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  padding: 0;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.hero-visual {
  color: var(--accent);
  display: flex;
  justify-content: center;
}

.network-art {
  width: min(360px, 100%);
}

/* ---------- Sections ---------- */
.section {
  padding-block: clamp(3rem, 2.4rem + 3vw, 5.5rem);
}

.section-alt {
  background: var(--bg-alt);
}

.section-lead {
  color: var(--text-muted);
  max-width: 65ch;
}

.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-top: 2rem;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid rgba(var(--line-rgb), 0.12);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

.card-icon {
  width: 32px;
  height: 32px;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.card ul {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.card li {
  margin-bottom: 0.3rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  text-decoration: none;
  margin-top: 0.5rem;
}

/* ---------- Process ---------- */
.process-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 900px) {
  .process-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

.process-item {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 1px solid rgba(var(--line-rgb), 0.12);
}

.process-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.process-item details summary {
  cursor: pointer;
  font-weight: 700;
}

.process-item details p {
  color: var(--text-muted);
  margin-top: 0.5rem;
  margin-bottom: 0;
}

/* ---------- Benefits & compare table ---------- */
.benefit-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  margin: 2rem 0;
}

.benefit h3 {
  color: var(--accent);
}

.benefit p {
  color: var(--text-muted);
}

.compare-wrap {
  overflow-x: auto;
  margin-top: 1rem;
}

.compare-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 560px;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
}

.compare-table caption {
  text-align: left;
  padding: 1rem 1.25rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.compare-table th,
.compare-table td {
  padding: 0.85rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid rgba(var(--line-rgb), 0.12);
}

.compare-table thead th {
  background: var(--bg-alt);
}

/* ---------- FAQ ---------- */
.faq-list {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}

.faq-list details {
  background: var(--surface);
  border: 1px solid rgba(var(--line-rgb), 0.12);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list details p {
  color: var(--text-muted);
  margin: 0.75rem 0 0;
}

/* ---------- Contact ---------- */
.section-contact {
  background: var(--bg-alt);
}

.contact-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
  }
}

.fine-print {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.contact-form {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid rgba(var(--line-rgb), 0.12);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field label {
  font-weight: 600;
  font-size: 0.92rem;
}

.field input,
.field select,
.field textarea {
  font: inherit;
  padding: 0.65rem 0.8rem;
  border-radius: 8px;
  border: 1px solid rgba(var(--line-rgb), 0.3);
  background: var(--bg);
  color: var(--text);
}

.field input:invalid[aria-invalid="true"],
.field textarea:invalid[aria-invalid="true"] {
  border-color: var(--danger);
}

.field-check {
  flex-direction: row;
  align-items: flex-start;
  flex-wrap: wrap;
}

.field-check input {
  margin-top: 0.3rem;
}

.field-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0;
  min-height: 1.1em;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  min-height: 1.2em;
  font-size: 0.9rem;
  color: var(--accent);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid rgba(var(--line-rgb), 0.12);
  padding-block: 2.5rem;
}

.footer-inner {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 700px) {
  .footer-inner {
    grid-template-columns: 1.2fr 1fr 1fr;
    align-items: start;
  }
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

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

.copyright {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  background: var(--accent);
  color: var(--accent-contrast);
  border: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ---------- Reveal on scroll ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease, transform 500ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Portfolio page: route/station layout ---------- */
.cta-band {
  background: radial-gradient(120% 160% at 88% 110%, var(--navy-2), var(--navy) 60%);
  color: var(--on-navy);
  border-radius: var(--radius);
  padding: 56px 48px;
  text-align: center;
}

@media (max-width: 640px) {
  .cta-band {
    padding: 40px 24px;
  }
}

.cta-band p {
  color: var(--on-navy-soft);
  max-width: 48ch;
  margin: 0 auto 28px;
}

.cta-band .contact {
  font-size: 0.9rem;
  color: var(--on-navy-soft);
  margin-top: 22px;
}

.cta-band .contact a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.route-list {
  display: flex;
  flex-direction: column;
  margin-top: 2rem;
}

.station {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  padding: 30px 0;
  border-top: 1px solid rgba(var(--line-rgb), 0.6);
}

.route-list .station:first-child {
  border-top: none;
}

.station-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.station-marker .node {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  background: var(--bg);
  flex: none;
}

.station-marker .stem {
  flex: 1;
  width: 1px;
  background: rgba(var(--line-rgb), 0.6);
  margin-top: 6px;
}

.station:last-child .station-marker .stem {
  display: none;
}

.station h3 {
  font-size: 1.18rem;
  margin: 0 0 8px;
}

.station .desc {
  color: var(--text-muted);
  margin: 0 0 14px;
  max-width: 58ch;
}

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

@media (max-width: 640px) {
  .station-grid {
    grid-template-columns: 1fr;
  }
  .station {
    grid-template-columns: 34px 1fr;
    gap: 14px;
  }
}

.station-grid h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-strong);
  margin: 0 0 8px;
  font-weight: 700;
}

.station-grid ul {
  margin: 0;
  padding-left: 18px;
  font-size: 0.92rem;
  color: var(--text);
}

.station-grid li {
  margin-bottom: 5px;
}

.for-whom {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.process-path {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  margin-top: 2rem;
}

@media (max-width: 800px) {
  .process-path {
    grid-template-columns: 1fr;
    gap: 22px;
  }
}

.process-path::before {
  content: "";
  position: absolute;
  top: 19px;
  left: 6%;
  right: 6%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 10px, transparent 10px 18px);
}

@media (max-width: 800px) {
  .process-path::before {
    display: none;
  }
}

.pstep {
  position: relative;
  padding-right: 18px;
}

.pstep .n {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: ui-monospace, monospace;
  position: relative;
  z-index: 1;
  margin-bottom: 16px;
}

.pstep h4 {
  font-size: 1rem;
  margin: 0 0 6px;
}

.pstep p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

.case-study {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 36px 40px;
  margin-top: 2rem;
}

@media (max-width: 640px) {
  .case-study {
    padding: 26px 22px;
  }
}

.case-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--accent-strong);
  background: var(--bg-alt);
  padding: 6px 12px;
  border-radius: 20px;
  margin-bottom: 18px;
}

.case-study h3 {
  font-size: 1.4rem;
  margin: 0 0 14px;
}

.case-study p {
  color: var(--text-muted);
  font-size: 1rem;
  margin: 0 0 14px;
  max-width: 66ch;
}

.case-study p:last-of-type {
  margin-bottom: 0;
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--surface-border);
}

@media (max-width: 560px) {
  .case-stats {
    grid-template-columns: 1fr;
  }
}

.case-stats .num {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: ui-monospace, monospace;
  color: var(--accent-strong);
}

.case-stats .lbl {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.pillrow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.pill {
  font-size: 0.78rem;
  background: var(--bg-alt);
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: 20px;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 2rem;
}

@media (max-width: 800px) {
  .price-grid {
    grid-template-columns: 1fr;
  }
}

.price-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
}

.price-card.highlight {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.price-card .kind {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 10px;
}

.price-card .amount {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: ui-monospace, monospace;
  margin-bottom: 4px;
}

.price-card .unit {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.price-card ul {
  margin: 0;
  padding-left: 18px;
  font-size: 0.9rem;
  color: var(--text);
  flex: 1;
}

.price-card li {
  margin-bottom: 6px;
}

.price-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 20px;
  max-width: 70ch;
}