:root {
  --color-navy: #15386E;
  --color-navy-deep: #071A33;
  --color-navy-line: #244A82;
  --color-navy-surface: #1C4C8A;
  --color-ink: #172033;
  --color-slate: #5D6678;
  --color-soft-text: #8894AB;
  --color-bg: #FFFFFF;
  --color-soft-bg: #F5F7FA;
  --color-card: #FFFFFF;
  --color-border: #E3E8F0;
  --color-border-strong: #CAD3E1;
  --color-accent: #F2A65A;
  --color-accent-soft: #FFF3E6;
  --color-danger: #E5484D;
  --color-on-navy: #FFFFFF;
  --color-ring: #2D6CDF;
  --font-sans: "Pretendard", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --type-display: 52px;
  --type-display-md: 42px;
  --type-display-sm: 34px;
  --type-section: 32px;
  --type-section-sm: 27px;
  --type-card-title: 20px;
  --type-body: 17px;
  --type-body-sm: 16px;
  --type-label: 13px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-28: 112px;
  --radius-sm: 10px;
  --radius-card: 14px;
  --radius-lg: 18px;
  --container: 1120px;
  --shadow-soft: 0 10px 30px rgba(21, 56, 110, 0.07), 0 1px 2px rgba(21, 56, 110, 0.06);
  --shadow-panel: 0 30px 60px rgba(7, 26, 51, 0.28), 0 2px 6px rgba(7, 26, 51, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--type-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--color-accent-soft);
  color: var(--color-navy);
}

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

img,
svg {
  display: block;
}

svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  width: min(100% - var(--space-8), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  inset-block-start: var(--space-4);
  inset-inline-start: var(--space-4);
  z-index: 20;
  padding: var(--space-3) var(--space-4);
  background: var(--color-navy);
  color: var(--color-on-navy);
  border-radius: var(--radius-sm);
  transform: translateY(-120px);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Header ---------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: saturate(1.4) blur(14px);
}

.header-inner {
  min-height: var(--space-16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-mark {
  width: calc(var(--space-10) - var(--space-1));
  height: var(--space-10);
  display: grid;
  place-items: center;
  color: var(--color-navy);
  flex: 0 0 auto;
}

.brand-mark svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
  stroke: none;
}

.brand-text {
  display: grid;
  line-height: 1.2;
}

.brand-text span:first-child {
  font-size: var(--type-body-sm);
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: 0;
}

.brand-text span:last-child {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--color-slate);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--type-body-sm);
  font-weight: 600;
  color: var(--color-slate);
}

.nav-links a,
.contact-panel a {
  transition: color 180ms ease;
}

.nav-links a:hover {
  color: var(--color-navy);
}

.header-cta {
  min-height: var(--space-10);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-sm);
  color: var(--color-on-navy);
  font-size: var(--type-body-sm);
  font-weight: 700;
  background: linear-gradient(150deg, var(--color-navy), var(--color-navy-deep));
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

/* Buttons --------------------------------------------------------------- */

.button {
  min-height: var(--space-12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--type-body-sm);
  font-weight: 700;
  line-height: 1.2;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  transform: none;
  box-shadow: none;
}

.button svg {
  width: var(--space-5);
  height: var(--space-5);
}

.button-primary {
  color: var(--color-on-navy);
  background: linear-gradient(150deg, var(--color-navy), var(--color-navy-deep));
}

.button-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.button-secondary {
  color: var(--color-navy);
  background: var(--color-bg);
  border-color: var(--color-border-strong);
}

.button-secondary:hover {
  transform: translateY(-3px);
  border-color: var(--color-navy);
  box-shadow: var(--shadow-soft);
}

/* Navy surface (contact) ------------------------------------------------ */

.surface-navy {
  position: relative;
  isolation: isolate;
  background: radial-gradient(120% 120% at 82% 8%, var(--color-navy-surface) 0%, var(--color-navy) 42%, var(--color-navy-deep) 100%);
  color: var(--color-on-navy);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(62% 52% at 82% 18%, color-mix(in srgb, var(--color-accent) 20%, transparent), transparent 68%);
}

.surface-navy .eyebrow {
  color: color-mix(in srgb, var(--color-on-navy) 82%, transparent);
}

.surface-navy .button-primary {
  color: var(--color-navy);
  background: var(--color-on-navy);
}

.surface-navy .button-primary:hover {
  background: var(--color-accent-soft);
}

.surface-navy .button-secondary {
  color: var(--color-on-navy);
  background: color-mix(in srgb, var(--color-on-navy) 8%, transparent);
  border-color: color-mix(in srgb, var(--color-on-navy) 30%, transparent);
}

.surface-navy .button-secondary:hover {
  background: color-mix(in srgb, var(--color-on-navy) 16%, transparent);
  border-color: color-mix(in srgb, var(--color-on-navy) 55%, transparent);
}

/* Hero ------------------------------------------------------------------ */

.hero {
  background: linear-gradient(180deg, var(--color-bg) 0%, color-mix(in srgb, var(--color-navy) 5%, var(--color-bg)) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(380px, 0.98fr);
  align-items: center;
  gap: var(--space-16);
  padding-block: var(--space-24) var(--space-24);
}

.hero-copy {
  display: grid;
  gap: var(--space-6);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-navy);
  font-size: var(--type-label);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.4;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

h1 {
  max-width: 640px;
  color: var(--color-navy);
  font-size: var(--type-display);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: 0;
}

.hero-description {
  max-width: 560px;
  color: var(--color-slate);
  font-size: 18px;
  line-height: 1.72;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
}

.tag-list li {
  color: var(--color-navy);
  font-size: var(--type-body-sm);
  font-weight: 600;
  line-height: 1.3;
}

.tag-list li + li::before {
  content: "·";
  margin-inline-end: var(--space-3);
  color: var(--color-border-strong);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

/* Brand graphic --------------------------------------------------------- */

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 430px;
}

.brand-graphic {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-5), 3.5vw, var(--space-8));
  color: var(--color-navy);
}

.brand-graphic-mark {
  width: clamp(96px, 19vw, 148px);
  aspect-ratio: 215 / 239;
  flex: 0 0 auto;
  filter: drop-shadow(0 var(--space-4) var(--space-6) color-mix(in srgb, var(--color-navy) 18%, transparent));
}

.brand-graphic-mark svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
  stroke: none;
}

.brand-graphic-lockup {
  display: grid;
  justify-items: start;
  gap: var(--space-3);
  white-space: nowrap;
}

.brand-graphic-lockup strong {
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1;
}

.brand-graphic-lockup span {
  color: var(--color-slate);
  font-size: clamp(13px, 2vw, 19px);
  font-weight: 600;
  letter-spacing: 0.35em;
  line-height: 1;
}

/* Sections -------------------------------------------------------------- */

.section {
  padding-block: var(--space-24);
}

.section-soft {
  background: var(--color-soft-bg);
  border-block: 1px solid var(--color-border);
}

.section-heading {
  display: grid;
  gap: var(--space-4);
  max-width: 660px;
  margin-bottom: var(--space-12);
}

.section-heading h2,
.contact-copy h2 {
  font-size: var(--type-section);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: 0;
}

.section-heading h2 {
  color: var(--color-navy);
}

.section-heading p:not(.eyebrow) {
  color: var(--color-slate);
  font-size: 18px;
}

/* Service cards --------------------------------------------------------- */

.service-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.service-card {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-8);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--color-navy) 22%, var(--color-border));
  box-shadow: 0 22px 44px rgba(21, 56, 110, 0.1);
}

.icon-box {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  color: var(--color-navy);
  background: var(--color-soft-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.icon-box svg {
  width: 26px;
  height: 26px;
  stroke-width: 1.8;
}

.service-card h3,
.process-list h3 {
  color: var(--color-navy);
  font-size: var(--type-card-title);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
}

.service-card p,
.process-list p {
  color: var(--color-slate);
  font-size: var(--type-body-sm);
  line-height: 1.65;
}

/* Process --------------------------------------------------------------- */

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-5);
  counter-reset: step;
}

.process-list li {
  position: relative;
  display: grid;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.step-number {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--color-navy);
  background: var(--color-accent-soft);
  border: 1px solid color-mix(in srgb, var(--color-accent) 45%, var(--color-border));
  border-radius: 50%;
  font-size: 15px;
  font-weight: 800;
}

/* Contact --------------------------------------------------------------- */

.contact-section {
  border-top: 1px solid var(--color-navy-line);
}

.contact-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: var(--space-16);
  align-items: center;
}

.contact-copy {
  display: grid;
  gap: var(--space-5);
}

.contact-copy p:not(.eyebrow) {
  max-width: 460px;
  color: color-mix(in srgb, var(--color-on-navy) 76%, transparent);
  font-size: 18px;
}

.contact-panel {
  display: grid;
  gap: var(--space-6);
  padding: var(--space-8);
  background: color-mix(in srgb, var(--color-on-navy) 7%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-on-navy) 15%, transparent);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(6px);
}

.contact-panel dl {
  display: grid;
  gap: var(--space-5);
  margin: 0;
}

.contact-panel dl div {
  display: grid;
  gap: var(--space-1);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid color-mix(in srgb, var(--color-on-navy) 14%, transparent);
}

.contact-panel dt {
  color: color-mix(in srgb, var(--color-on-navy) 62%, transparent);
  font-size: var(--type-label);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.contact-panel dd {
  margin: 0;
  color: var(--color-on-navy);
  font-size: var(--type-card-title);
  font-weight: 700;
  word-break: break-word;
}

.contact-panel dd a:hover {
  color: var(--color-accent);
}

.contact-form {
  display: grid;
  gap: var(--space-5);
}

.contact-field {
  display: grid;
  gap: var(--space-2);
}

.contact-field label {
  color: color-mix(in srgb, var(--color-on-navy) 72%, transparent);
  font-size: var(--type-label);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.4;
  text-transform: uppercase;
}

.contact-field input,
.contact-field textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-ink);
  font: inherit;
  font-size: var(--type-body-sm);
  line-height: 1.55;
  padding: var(--space-3) var(--space-4);
}

.contact-field textarea {
  min-height: calc(var(--space-28) + var(--space-2));
  resize: vertical;
}

.contact-field input:focus-visible,
.contact-field textarea:focus-visible {
  border-color: var(--color-ring);
}

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

.hp-field {
  position: absolute;
  inset-inline-start: calc(var(--space-28) * -10);
  inline-size: var(--space-1);
  block-size: var(--space-1);
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.turnstile-wrap {
  min-height: var(--space-16);
}

.form-status,
.field-error {
  margin: 0;
  color: color-mix(in srgb, var(--color-danger) 88%, var(--color-on-navy));
  font-size: var(--type-label);
  font-weight: 700;
  line-height: 1.5;
}

.form-status {
  padding: var(--space-3) var(--space-4);
  background: color-mix(in srgb, var(--color-danger) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-danger) 38%, transparent);
  border-radius: var(--radius-sm);
}

.form-status[hidden],
.field-error[hidden] {
  display: none;
}

.contact-direct,
.contact-noscript {
  margin: 0;
  color: color-mix(in srgb, var(--color-on-navy) 72%, transparent);
  font-size: var(--type-body-sm);
  line-height: 1.6;
}

.contact-direct a,
.contact-noscript a {
  color: var(--color-on-navy);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: var(--space-1);
}

.contact-direct a:hover,
.contact-noscript a:hover {
  color: var(--color-accent);
}

.contact-success {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-6);
  background: color-mix(in srgb, var(--color-on-navy) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-on-navy) 18%, transparent);
  border-radius: var(--radius-sm);
}

.contact-success h3 {
  color: var(--color-on-navy);
  font-size: var(--type-card-title);
  font-weight: 800;
  line-height: 1.35;
}

.contact-success p {
  color: color-mix(in srgb, var(--color-on-navy) 72%, transparent);
  font-size: var(--type-body-sm);
}

/* Footer ---------------------------------------------------------------- */

.site-footer {
  background: var(--color-navy-deep);
  color: var(--color-on-navy);
  padding-block: var(--space-8);
}

.copyright {
  margin: 0;
  color: var(--color-soft-text);
  font-size: var(--type-body-sm);
  text-align: center;
}

/* Focus ----------------------------------------------------------------- */

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-ring) 55%, transparent);
  outline-offset: 3px;
}

.surface-navy :focus-visible {
  outline-color: color-mix(in srgb, var(--color-on-navy) 70%, transparent);
}

/* Responsive ------------------------------------------------------------ */

@media (max-width: 960px) {
  .hero-inner,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    gap: var(--space-12);
    padding-block: var(--space-20);
  }

  h1 {
    font-size: var(--type-display-md);
  }

  .hero-visual {
    max-width: 560px;
    min-height: 0;
  }

  .service-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  body {
    font-size: var(--type-body-sm);
  }

  .container {
    width: min(100% - var(--space-6), var(--container));
  }

  .header-inner {
    gap: var(--space-3);
  }

  .brand-text span:last-child,
  .nav-links {
    display: none;
  }

  .hero-inner {
    padding-block: var(--space-16) var(--space-20);
  }

  h1 {
    font-size: var(--type-display-sm);
  }

  .hero-description,
  .section-heading p:not(.eyebrow),
  .contact-copy p:not(.eyebrow) {
    font-size: var(--type-body-sm);
  }

  .section-heading h2,
  .contact-copy h2 {
    font-size: var(--type-section-sm);
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .service-cards,
  .process-list {
    grid-template-columns: 1fr;
  }

  .service-card {
    padding: var(--space-6);
  }

  .section {
    padding-block: var(--space-16);
  }

  .contact-panel {
    padding: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }

  .button:hover,
  .header-cta:hover,
  .service-card:hover {
    transform: none;
  }
}