:root {
  --color-bg: #f7f6f2;
  --color-paper: #fbfaf7;
  --color-paper-alt: #f1efe8;
  --color-cool: #eef1f3;
  --color-ink: #171a1f;
  --color-muted: #4f5663;
  --color-line: #cbd1da;
  --color-line-strong: #b6bfcb;
  --color-accent: #17354f;
  --color-accent-soft: #2f4f6b;
  --color-success: #125e37;
  --color-error: #b42318;
}

html {
  scroll-behavior: smooth;
}

body {
  background: radial-gradient(1200px 450px at 50% -25%, #ffffff 0%, var(--color-bg) 58%, #f1f0ea 100%);
  color: var(--color-ink);
  font-family: "Inter", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: "Newsreader", serif;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

.mono-label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.68rem;
  font-weight: 600;
}

.editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.section-frame {
  border-top: 1px solid color-mix(in srgb, var(--color-line) 70%, transparent);
}

.section-soft {
  background: color-mix(in srgb, var(--color-paper) 84%, #ffffff);
}

.section-warm {
  background: color-mix(in srgb, var(--color-paper-alt) 82%, #ffffff);
}

.section-cool {
  background: color-mix(in srgb, var(--color-cool) 80%, #ffffff);
}

.section-divider {
  border-top: 1px solid color-mix(in srgb, var(--color-line) 78%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-line) 46%, transparent);
}

.card-hover {
  border: 1px solid color-mix(in srgb, var(--color-line) 72%, transparent);
  transition: background-color 250ms ease, border-color 250ms ease, transform 250ms ease;
}

.card-hover:hover {
  background-color: color-mix(in srgb, var(--color-paper) 44%, #edf1f5);
  border-color: color-mix(in srgb, var(--color-line-strong) 80%, transparent);
  transform: translateY(-1px);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.28rem;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms ease;
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  transform: scaleX(1);
}

.mobile-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 280ms ease;
}

.mobile-panel.open {
  max-height: 24rem;
}

.form-message {
  min-height: 1.2rem;
}

.cta-secondary,
.cta-primary,
.contact-link {
  transition: all 240ms ease;
}

.cta-secondary:hover {
  background: color-mix(in srgb, var(--color-paper) 62%, #ffffff);
  border-color: var(--color-line-strong);
}

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

.contact-link {
  display: inline-block;
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
}

.contact-link:hover {
  border-bottom-color: color-mix(in srgb, var(--color-accent) 35%, transparent);
}

.input-shell {
  border-bottom: 1px solid var(--color-line);
  transition: border-color 220ms ease;
}

.input-shell:focus-within {
  border-bottom-color: var(--color-accent);
}

.input-shell.error {
  border-bottom-color: var(--color-error);
}

.input-shell.success {
  border-bottom-color: var(--color-success);
}

.profile-card {
  border: 1px solid color-mix(in srgb, var(--color-line) 75%, transparent);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72) 0%, rgba(249, 248, 243, 0.88) 100%);
  backdrop-filter: blur(1px);
  transition: border-color 220ms ease, background-color 220ms ease;
}

.profile-card:hover {
  border-color: color-mix(in srgb, var(--color-line-strong) 80%, transparent);
}

.tech-chip {
  list-style: none;
  border: 1px solid color-mix(in srgb, var(--color-line) 82%, transparent);
  background: color-mix(in srgb, var(--color-paper) 72%, #ffffff);
  color: var(--color-ink);
  padding: 0.55rem 0.8rem;
  font-size: 0.84rem;
  line-height: 1.2;
  letter-spacing: 0.01em;
  transition: border-color 220ms ease, background-color 220ms ease;
}

.tech-chip:hover {
  border-color: color-mix(in srgb, var(--color-line-strong) 80%, transparent);
  background: color-mix(in srgb, var(--color-paper) 56%, #e8edf2);
}

.hero-kicker {
  color: color-mix(in srgb, var(--color-muted) 88%, #20242a);
}

.hero-summary {
  color: color-mix(in srgb, var(--color-muted) 88%, #2a2e36);
}

.method-shell {
  border-top: 1px solid rgba(217, 229, 240, 0.28);
  border-bottom: 1px solid rgba(217, 229, 240, 0.22);
  background: linear-gradient(180deg, rgba(23, 53, 79, 1) 0%, rgba(21, 49, 73, 1) 100%);
}

.method-card {
  border-left: 1px solid rgba(217, 229, 240, 0.28);
  padding-left: 1rem;
}

.editorial-image-wrap {
  border-top: 1px solid color-mix(in srgb, var(--color-line) 72%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-line) 72%, transparent);
  background: linear-gradient(180deg, #e9ecef 0%, #dde3ea 100%);
}

.editorial-image {
  filter: grayscale(100%) contrast(108%);
}

button:disabled {
  pointer-events: none;
}

@media (max-width: 767px) {
  .hero-title {
    font-size: clamp(2.8rem, 11vw, 4.3rem);
    line-height: 0.95;
  }

  .hero-section {
    min-height: 88svh;
    padding-top: 8.4rem;
    padding-bottom: 4.8rem;
  }

  .tech-chip {
    font-size: 0.8rem;
  }
}