:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-alt: #eef4f8;
  --ink: #111827;
  --muted: #526071;
  --line: #dce3ea;
  --blue: #0b4f8a;
  --blue-dark: #07365f;
  --teal: #168c86;
  --amber: #d58936;
  --shadow: 0 18px 54px rgba(17, 24, 39, 0.09);
  --header-bg: rgba(247, 248, 251, 0.94);
  --header-line: rgba(220, 227, 234, 0.9);
  --brand-mark-bg: #111827;
  --brand-mark-ink: #ffffff;
  --nav-hover-bg: #ffffff;
  --button-on-accent: #ffffff;
  --button-secondary-bg: #ffffff;
  --kicker-bg: #eaf4fb;
  --tag-bg: #f2f5f8;
  --blockquote-bg: #ffffff;
  --table-bg: #ffffff;
  --table-head-bg: #f3f6f9;
  --cta-bg: #111827;
  --cta-ink: #ffffff;
  --cta-muted: rgba(255, 255, 255, 0.76);
  --cta-line: rgba(255, 255, 255, 0.22);
  --visual-note-bg: rgba(255, 255, 255, 0.92);
  --visual-note-line: rgba(220, 227, 234, 0.88);
  --max: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0e141b;
    --surface: #151d26;
    --surface-alt: #1d2833;
    --ink: #edf4f8;
    --muted: #a9b7c3;
    --line: #2d3a47;
    --blue: #7ab8ff;
    --blue-dark: #a8d4ff;
    --teal: #54d0c4;
    --amber: #f0b35a;
    --shadow: 0 18px 54px rgba(0, 0, 0, 0.28);
    --header-bg: rgba(14, 20, 27, 0.92);
    --header-line: rgba(45, 58, 71, 0.9);
    --brand-mark-bg: #edf4f8;
    --brand-mark-ink: #0e141b;
    --nav-hover-bg: #1d2833;
    --button-on-accent: #07131f;
    --button-secondary-bg: #151d26;
    --kicker-bg: #173449;
    --tag-bg: #121b24;
    --blockquote-bg: #151d26;
    --table-bg: #151d26;
    --table-head-bg: #1d2833;
    --cta-bg: #1d2833;
    --cta-ink: #edf4f8;
    --cta-muted: #a9b7c3;
    --cta-line: #3b4c5a;
    --visual-note-bg: rgba(21, 29, 38, 0.93);
    --visual-note-line: rgba(74, 91, 108, 0.8);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e141b;
  --surface: #151d26;
  --surface-alt: #1d2833;
  --ink: #edf4f8;
  --muted: #a9b7c3;
  --line: #2d3a47;
  --blue: #7ab8ff;
  --blue-dark: #a8d4ff;
  --teal: #54d0c4;
  --amber: #f0b35a;
  --shadow: 0 18px 54px rgba(0, 0, 0, 0.28);
  --header-bg: rgba(14, 20, 27, 0.92);
  --header-line: rgba(45, 58, 71, 0.9);
  --brand-mark-bg: #edf4f8;
  --brand-mark-ink: #0e141b;
  --nav-hover-bg: #1d2833;
  --button-on-accent: #07131f;
  --button-secondary-bg: #151d26;
  --kicker-bg: #173449;
  --tag-bg: #121b24;
  --blockquote-bg: #151d26;
  --table-bg: #151d26;
  --table-head-bg: #1d2833;
  --cta-bg: #1d2833;
  --cta-ink: #edf4f8;
  --cta-muted: #a9b7c3;
  --cta-line: #3b4c5a;
  --visual-note-bg: rgba(21, 29, 38, 0.93);
  --visual-note-line: rgba(74, 91, 108, 0.8);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { color: var(--muted); line-height: 1.65; }
ul { color: var(--muted); line-height: 1.65; padding-left: 1.1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--header-bg);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--header-line);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  min-height: 76px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--brand-mark-bg);
  color: var(--brand-mark-ink);
  font-size: 0.82rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.93rem;
  font-weight: 650;
  color: var(--muted);
}

.nav-links a {
  padding: 10px 11px;
  border-radius: 8px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
  background: var(--nav-hover-bg);
}

.theme-toggle {
  width: 48px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  cursor: pointer;
}

.theme-toggle-track {
  position: relative;
  width: 36px;
  height: 20px;
  display: block;
}

.theme-toggle-track::before,
.theme-toggle-track::after {
  content: "";
  position: absolute;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  opacity: 0.55;
}

.theme-toggle-track::before { left: 2px; }
.theme-toggle-track::after { right: 2px; }

.theme-toggle-thumb {
  position: absolute;
  top: 1px;
  left: 1px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 3px 10px rgba(17, 24, 39, 0.18);
  transition: transform 180ms ease, background-color 180ms ease;
}

:root[data-theme="dark"] .theme-toggle-thumb {
  transform: translateX(16px);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: var(--blue);
  outline: none;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 15px;
  border-radius: 8px;
  background: var(--blue);
  color: var(--button-on-accent);
  font-weight: 760;
  box-shadow: 0 12px 26px rgba(11, 79, 138, 0.2);
  white-space: nowrap;
}

main { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.section { padding: 82px 0; }
.section.tight { padding: 58px 0; }
.section-band {
  margin: 0 calc(50% - 50vw);
  padding: 82px max(22px, calc((100vw - var(--max)) / 2 + 22px));
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero {
  min-height: calc(100vh - 76px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.9fr);
  gap: 46px;
  align-items: center;
  padding: 70px 0 56px;
}

.hero h1,
.page-hero h1,
.section-title,
.cta h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.02;
}

.hero h1 { font-size: clamp(3.2rem, 7vw, 6rem); }
.page-hero h1 { font-size: clamp(2.7rem, 6vw, 5.2rem); max-width: 930px; }
.section-title { font-size: clamp(2rem, 4vw, 3.7rem); max-width: 860px; }
.hero-copy { max-width: 720px; }
.hero-text { margin: 26px 0 0; font-size: 1.16rem; max-width: 680px; }
.eyebrow {
  margin: 0 0 15px;
  color: var(--blue);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 850;
}

.hero-visual {
  position: relative;
  min-height: 530px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 530px;
  object-fit: cover;
}

.visual-note {
  position: absolute;
  left: 18px;
  bottom: 18px;
  width: min(360px, calc(100% - 36px));
  padding: 18px;
  border-radius: 8px;
  background: var(--visual-note-bg);
  border: 1px solid var(--visual-note-line);
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.16);
}

.visual-note strong { display: block; margin-bottom: 4px; }
.visual-note span { color: var(--muted); font-size: 0.94rem; line-height: 1.45; }

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 760;
  border: 1px solid transparent;
}

.button.primary { color: var(--button-on-accent); background: var(--blue); }
.button.dark { color: var(--brand-mark-ink); background: var(--brand-mark-bg); }
.button.secondary { color: var(--ink); background: var(--button-secondary-bg); border-color: var(--line); }
.button:hover { transform: translateY(-1px); }

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.proof-item,
.card,
.case-card,
.project-card,
.service-card,
.quote-card,
.process-step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(17, 24, 39, 0.04);
}

.proof-item { padding: 18px; }
.proof-item strong { display: block; font-size: 1.35rem; color: var(--ink); }
.proof-item span { display: block; color: var(--muted); font-size: 0.92rem; line-height: 1.45; margin-top: 5px; }

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: end;
  margin-bottom: 28px;
}

.section-heading p { max-width: 420px; margin: 0; }
.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.service-card,
.project-card,
.case-card,
.quote-card,
.process-step,
.card { padding: 24px; }

.service-card h3,
.project-card h3,
.case-card h3,
.process-step h3,
.card h3 { margin: 0 0 10px; font-size: 1.25rem; }

.service-card p,
.project-card p,
.case-card p,
.process-step p,
.card p { margin: 0; }

.kicker {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 6px;
  background: var(--kicker-bg);
  color: var(--blue-dark);
  font-size: 0.73rem;
  font-weight: 820;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag-list span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 9px;
  border-radius: 6px;
  color: var(--muted);
  background: var(--tag-bg);
  border: 1px solid var(--line);
  font-size: 0.82rem;
  font-weight: 650;
}

.pain-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 34px;
  align-items: start;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: flex;
  gap: 11px;
  color: var(--muted);
  line-height: 1.5;
}

.check-list li::before {
  content: "";
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 8px;
  background: var(--teal);
}

.case-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-meta {
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.case-meta div { display: grid; gap: 3px; }
.case-meta strong { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--blue-dark); }
.case-meta span { color: var(--muted); line-height: 1.5; }

.project-card footer {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.process-step { min-height: 176px; }
.process-step .num { color: var(--blue); font-weight: 900; margin-bottom: 24px; display: block; }

.page-hero {
  padding: 78px 0 54px;
  border-bottom: 1px solid var(--line);
}

.page-hero p { max-width: 770px; font-size: 1.1rem; }

.article {
  max-width: 840px;
  margin: 0 auto;
  padding: 76px 0;
}

.article h1 { font-size: clamp(2.7rem, 6vw, 5rem); line-height: 1.03; margin: 0 0 22px; }
.article h2 { font-size: 1.65rem; margin: 44px 0 12px; }
.article h3 { margin: 28px 0 8px; }
.article p, .article li { font-size: 1.04rem; }
.article blockquote {
  margin: 28px 0;
  padding: 20px 22px;
  border-left: 4px solid var(--teal);
  background: var(--blockquote-bg);
  color: var(--ink);
}

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--table-bg); }
table { border-collapse: collapse; width: 100%; min-width: 640px; }
th, td { text-align: left; padding: 13px 14px; border-bottom: 1px solid var(--line); }
th { color: var(--ink); background: var(--table-head-bg); font-size: 0.86rem; }
td { color: var(--muted); }

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 34px;
  background: var(--cta-bg);
  color: var(--cta-ink);
  border-radius: 8px;
  margin: 72px 0;
}

.cta p { color: var(--cta-muted); margin-bottom: 0; }
.cta .button.secondary { color: var(--cta-ink); background: transparent; border-color: var(--cta-line); }

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 22px 44px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.muted { color: var(--muted); }
.strong { color: var(--ink); font-weight: 760; }

@media (max-width: 980px) {
  .header-inner { flex-wrap: wrap; min-height: auto; padding-top: 12px; padding-bottom: 12px; }
  .nav-links { order: 3; width: 100%; overflow-x: auto; padding-bottom: 3px; }
  .hero,
  .pain-grid,
  .grid.two,
  .cta { grid-template-columns: 1fr; }
  .hero { padding-top: 52px; }
  .hero-visual, .hero-visual img { min-height: 420px; }
  .proof-strip, .grid.three, .grid.four, .process-line { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  main { padding: 0 16px; }
  .header-inner { padding-left: 14px; padding-right: 14px; gap: 12px; }
  .brand span:last-child { display: none; }
  .nav-links { flex-wrap: wrap; overflow: visible; gap: 6px; }
  .nav-links a { flex: 1 1 30%; text-align: center; padding: 9px 6px; }
  .nav-cta { min-height: 38px; padding: 0 12px; }
  .hero { min-height: auto; padding: 48px 0; }
  .hero h1 { font-size: 3.05rem; }
  .hero-text { font-size: 1.04rem; }
  .button-row, .button { width: 100%; }
  .hero-visual, .hero-visual img { min-height: 340px; }
  .visual-note { position: static; width: auto; margin: 12px; }
  .proof-strip, .grid.three, .grid.four, .process-line { grid-template-columns: 1fr; }
  .section, .section-band { padding-top: 58px; padding-bottom: 58px; }
  .section-heading { display: block; }
  .site-footer { display: block; }
}