:root {
  --ink: #171811;
  --deep: #0b0c08;
  --paper: #f4f2e8;
  --white: #ffffff;
  --muted: #666752;
  --line: #d9d5c3;
  --olive: #5b5d42;
  --olive-dark: #3f422f;
  --aqua: #6ed5da;
  --aqua-deep: #28aeb7;
  --sand: #e5dfc9;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "DM Sans", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
a { color: inherit; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  min-height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; text-decoration: none; }
.brand-logo { display: block; width: clamp(150px, 17vw, 230px); height: auto; }
nav { display: flex; gap: 28px; align-items: center; }
nav a { font-size: 14px; font-weight: 600; text-decoration: none; }
.nav-cta { border: 1px solid var(--olive); border-radius: 99px; padding: 9px 17px; }

main { overflow: hidden; }
.hero {
  width: min(var(--max), calc(100% - 48px)); margin: 0 auto;
  min-height: 670px; display: grid; grid-template-columns: 1.35fr .65fr;
  align-items: center; gap: 80px; padding: 78px 0 88px;
}
.eyebrow, .section-number {
  text-transform: uppercase; letter-spacing: .13em; font-size: 12px;
  font-weight: 700; margin: 0 0 28px;
}
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow span { display: block; width: 34px; height: 2px; background: var(--aqua); }
h1, h2, h3, blockquote { font-family: "Manrope", sans-serif; }
h1 { font-size: clamp(46px, 6.2vw, 83px); line-height: 1.02; letter-spacing: 0; margin: 0; max-width: 870px; }
h1 em { color: var(--aqua-deep); font-style: normal; }
.intro { max-width: 720px; color: #4f5240; font-size: 19px; line-height: 1.7; margin: 30px 0 34px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 22px;
  min-width: 190px; padding: 13px 18px; border-radius: 4px;
  text-decoration: none; font-size: 14px; font-weight: 600; transition: .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--olive-dark); }
.button-quiet { border: 1px solid var(--line); }
.signal-card {
  min-height: 360px; background: var(--deep); color: var(--paper); padding: 34px;
  display: flex; flex-direction: column; justify-content: flex-end; position: relative;
  box-shadow: 20px 20px 0 rgba(110, 213, 218, .16);
}
.signal-card::before {
  content: "RIDA / 01"; color: var(--aqua); letter-spacing: .15em; font-size: 11px;
  position: absolute; top: 25px; right: 28px;
}
.signal-card dl { margin: 0; }
.signal-card dl div { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid #4a4d38; padding: 11px 0; }
.signal-card dt { color: #c9c5ad; font-size: 12px; }
.signal-card dd { margin: 0; text-align: right; font-size: 13px; font-weight: 500; }

.principle-strip { background: var(--sand); display: flex; justify-content: center; gap: 42px; align-items: center; padding: 17px 24px; }
.principle-strip p { margin: 0; font: 600 13px "Manrope", sans-serif; text-transform: uppercase; letter-spacing: .09em; }
.principle-strip span { font-size: 7px; }
.section { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: .7fr 1.4fr .9fr; gap: 50px; align-items: start; margin-bottom: 70px; }
.section h2 { font-size: clamp(34px, 4vw, 54px); line-height: 1.12; letter-spacing: 0; margin: 0; }
.section-heading > p:last-child { color: var(--muted); margin: 5px 0 0; }
.expertise-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.expertise-grid article { padding: 32px 24px 22px 0; border-right: 1px solid var(--line); min-height: 250px; }
.expertise-grid article + article { padding-left: 24px; }
.expertise-grid article:last-child { border-right: 0; }
.expertise-grid article > span { color: var(--aqua); font: 700 12px "Manrope", sans-serif; }
.expertise-grid h3 { font-size: 20px; line-height: 1.35; margin: 45px 0 15px; }
.expertise-grid p { color: var(--muted); font-size: 15px; margin: 0; }

.approach { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: stretch; padding-top: 30px; }
.approach-panel { background: var(--olive); color: var(--white); padding: 55px; display: flex; flex-direction: column; justify-content: space-between; min-height: 470px; }
blockquote { font-size: clamp(26px, 3vw, 39px); line-height: 1.34; letter-spacing: 0; margin: 50px 0 0; }
.approach-copy { padding: 55px 0; }
.approach-copy p { color: var(--muted); font-size: 17px; max-width: 560px; }
.quality-note { border-left: 3px solid var(--aqua); background: var(--white); padding: 20px 22px; margin: 28px 0; max-width: 600px; }
.quality-note h3 { font-size: 17px; margin: 0 0 8px; }
.quality-note p { font-size: 15px; line-height: 1.65; margin: 0; }
.text-link { display: inline-block; margin-top: 30px; text-decoration: none; border-bottom: 2px solid var(--aqua); padding-bottom: 4px; font-weight: 600; }

.contact { background: var(--ink); color: var(--paper); padding: 85px max(24px, calc((100vw - var(--max))/2)); display: grid; grid-template-columns: .55fr 1.3fr .65fr; gap: 55px; align-items: start; }
.contact h2 { font-size: clamp(34px, 4vw, 52px); line-height: 1.12; letter-spacing: 0; margin: 0 0 20px; }
.contact div > p { color: #d1cdb8; max-width: 600px; margin: 0; }
.contact-actions { display: flex; flex-direction: column; align-items: stretch; gap: 20px; }
.button-light { background: var(--aqua); color: var(--ink); }
.contact-link { color: #d1cdb8; font-size: 13px; }
footer { background: var(--deep); color: #c9c5ad; padding: 32px max(24px, calc((100vw - var(--max))/2)); display: flex; justify-content: space-between; align-items: center; gap: 30px; font-size: 12px; }
.footer-brand strong { color: var(--paper); font: 700 16px "Manrope", sans-serif; letter-spacing: .12em; margin-right: 12px; }
footer p { margin: 0; }

@media (max-width: 900px) {
  nav a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; gap: 55px; padding-top: 60px; }
  .signal-card { min-height: 330px; max-width: 520px; }
  .section-heading { grid-template-columns: 1fr; gap: 14px; }
  .expertise-grid { grid-template-columns: 1fr 1fr; }
  .expertise-grid article:nth-child(even) { border-right: 0; }
  .expertise-grid article:nth-child(n+3) { border-top: 1px solid var(--line); }
  .approach { grid-template-columns: 1fr; gap: 15px; }
  .contact { grid-template-columns: 1fr; }
  footer { flex-wrap: wrap; }
}
@media (max-width: 560px) {
  .site-header, .hero, .section { width: min(100% - 32px, var(--max)); }
  .site-header { min-height: 78px; }
  .brand-logo { width: 142px; }
  .nav-cta { padding: 7px 14px; }
  h1 { font-size: 43px; }
  .intro { font-size: 17px; }
  .hero { padding: 52px 0 65px; }
  .signal-card { padding: 26px; min-height: 420px; }
  .principle-strip { justify-content: flex-start; overflow: hidden; gap: 22px; white-space: nowrap; }
  .section { padding: 85px 0; }
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-grid article, .expertise-grid article + article { border-right: 0; border-bottom: 1px solid var(--line); padding: 28px 0; min-height: auto; }
  .expertise-grid h3 { margin-top: 24px; }
  .approach-panel { min-height: 390px; padding: 34px; }
  .approach-copy { padding: 45px 0; }
  .contact { padding-top: 65px; padding-bottom: 65px; }
  footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}