/* ==========================================================================
   Jobava Holdings — stylesheet
   Table of contents:
   1. Variables & reset
   2. Base typography
   3. Layout helpers
   4. Buttons
   5. Header / nav
   6. Hero
   7. About
   8. Businesses
   9. Approach
   10. Why
   11. Contact
   12. Footer
   13. Scroll-reveal animation
   14. Responsive
   ========================================================================== */

/* 1. Variables & reset ---------------------------------------------------- */
:root {
  --color-black: #0e0e0e;
  --color-charcoal: #282828;
  --color-charcoal-soft: #333333;
  --color-grey: #414141;
  --color-grey-mid: #6e6e6e;
  --color-grey-line: #e4e1db;
  --color-white: #fdfdfd;
  --color-off-white: #f6f4f0;
  --color-gold: #966f42;
  --color-gold-light: #b58956;
  --color-gold-deep: #7c5a35;

  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1200px;
  --radius-sm: 4px;
  --radius: 10px;
  --radius-lg: 22px;
  --shadow-soft: 0 20px 50px -25px rgba(14, 14, 14, 0.35);
  --shadow-lift: 0 26px 60px -28px rgba(14, 14, 14, 0.45);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

@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);
  color: var(--color-charcoal);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

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

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

::selection {
  background: rgba(181, 137, 86, 0.3);
  color: var(--color-black);
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  color: var(--color-black);
}

p { margin: 0 0 1em; color: var(--color-grey); line-height: 1.75; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-black);
  color: var(--color-white);
  padding: 0.75em 1.25em;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

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

/* 3. Layout helpers -------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold-deep);
  margin-bottom: 1em;
}

.eyebrow::before {
  content: "";
  width: 30px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
  flex-shrink: 0;
}

.hero .eyebrow,
.why .eyebrow {
  color: var(--color-gold-light);
}

.section-head {
  max-width: 700px;
  margin-bottom: 3.5rem;
}

.section-head h2 {
  font-size: clamp(1.95rem, 3vw, 2.65rem);
}

.section-lede {
  font-size: 1.05rem;
  line-height: 1.75;
}

/* 4. Buttons ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 1em 2.15em;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease),
    color 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--color-gold-deep);
  color: var(--color-white);
  box-shadow: inset 0 0 0 1px rgba(253, 253, 253, 0.08);
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(253, 253, 253, 0.2), transparent);
  transform: translateX(-130%);
  transition: transform 0.65s var(--ease);
}

.btn-primary:hover::before { transform: translateX(130%); }

.btn-primary:hover {
  background: var(--color-gold);
  transform: translateY(-2px);
  box-shadow: 0 16px 34px -14px rgba(124, 90, 53, 0.55);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(181, 137, 86, 0.45);
}
.btn-outline:hover {
  border-color: var(--color-gold-light);
  background: rgba(181, 137, 86, 0.08);
  color: var(--color-gold-light);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.68em 1.5em;
  font-size: 0.72rem;
}

.btn-block { width: 100%; }

/* 5. Header / nav ------------------------------------------------------------ */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  background: transparent;
  transition: background-color 0.35s var(--ease), box-shadow 0.35s var(--ease), padding 0.35s var(--ease);
  padding-block: 1.2rem;
}

.site-header.scrolled {
  background: rgba(14, 14, 14, 0.94);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px -18px rgba(0, 0, 0, 0.6);
  padding-block: 0.7rem;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}

.brand-mark {
  width: 32px;
  height: auto;
  flex-shrink: 0;
  transition: transform 0.35s var(--ease);
}

.brand:hover .brand-mark {
  transform: translateY(-1px);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }

.brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.22rem;
  color: var(--color-white);
  letter-spacing: 0.015em;
}

.brand-tagline {
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold-light);
  margin-top: 0.3em;
}

.main-nav ul {
  display: flex;
  gap: clamp(1.25rem, 2.6vw, 2.1rem);
}

.main-nav a {
  display: inline-block;
  white-space: nowrap;
  color: rgba(253, 253, 253, 0.85);
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  padding-block: 0.3em;
  transition: color 0.25s var(--ease);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-gold-light);
  transition: width 0.3s var(--ease);
}

.main-nav a:hover {
  color: var(--color-white);
}
.main-nav a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1px solid rgba(253, 253, 253, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin-inline: 8px;
  background: var(--color-white);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 6. Hero --------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--color-white);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(181, 137, 86, 0.22), transparent 55%),
    radial-gradient(circle at 10% 90%, rgba(150, 111, 66, 0.16), transparent 50%),
    repeating-linear-gradient(135deg, rgba(253, 253, 253, 0.025) 0 1px, transparent 1px 64px),
    linear-gradient(160deg, var(--color-black) 0%, var(--color-charcoal) 55%, #1c1c1c 100%);
  z-index: -1;
}

.hero::after {
  content: "J";
  position: absolute;
  right: clamp(-60px, 4vw, 10px);
  bottom: -6vw;
  font-family: var(--font-serif);
  font-size: clamp(16rem, 28vw, 28rem);
  line-height: 1;
  font-weight: 700;
  color: rgba(181, 137, 86, 0.05);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(6rem, 12vw, 8rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
  max-width: 760px;
}

.hero-mark {
  width: 48px;
  height: auto;
  margin-bottom: 1.6rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6.2vw, 4.6rem);
  letter-spacing: -0.015em;
  line-height: 1.08;
  color: var(--color-white);
  margin-bottom: 0.55em;
}

.hero-sub {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.75;
  color: rgba(253, 253, 253, 0.74);
  max-width: 580px;
  margin-bottom: 2.6em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
}

.hero-inner > .reveal:nth-child(1) { transition-delay: 0s; }
.hero-inner > .reveal:nth-child(2) { transition-delay: 0.12s; }
.hero-inner > .reveal:nth-child(3) { transition-delay: 0.24s; }
.hero-inner > .reveal:nth-child(4) { transition-delay: 0.38s; }
.hero-inner > .reveal:nth-child(5) { transition-delay: 0.5s; }

.scroll-cue {
  position: absolute;
  bottom: 2.4rem;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 1.5px solid rgba(253, 253, 253, 0.3);
  border-radius: 20px;
  z-index: 1;
}

.scroll-cue span {
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-gold-light);
  animation: scrollCue 2s infinite;
}

@keyframes scrollCue {
  0% { opacity: 1; top: 7px; }
  70% { opacity: 0; top: 20px; }
  100% { opacity: 0; top: 7px; }
}

/* 7. About ---------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

.about-copy h2 {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  max-width: 16ch;
}

.about-copy p {
  max-width: 58ch;
  font-size: 1.01rem;
}

.about-copy p:first-of-type {
  font-size: 1.12rem;
  color: var(--color-charcoal);
}

.about-visual {
  position: relative;
  background: linear-gradient(165deg, var(--color-off-white), #efe9e0);
  border: 1px solid rgba(150, 111, 66, 0.12);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 3.5rem) 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.2rem;
}

.about-visual::before,
.about-visual::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border: 1.5px solid rgba(150, 111, 66, 0.4);
}
.about-visual::before { top: 18px; left: 18px; border-right: none; border-bottom: none; }
.about-visual::after { bottom: 18px; right: 18px; border-left: none; border-top: none; }

.about-mark {
  width: 120px;
  height: auto;
  filter: drop-shadow(0 16px 28px rgba(124, 90, 53, 0.25));
}

.plate-lines {
  width: 100%;
  max-width: 220px;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.plate-lines span {
  display: block;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-grey-line), transparent);
}
.plate-lines span:nth-child(1) { width: 80%; }
.plate-lines span:nth-child(2) { width: 55%; }
.plate-lines span:nth-child(3) { width: 68%; }

/* 8. Businesses -------------------------------------------------------------- */
.businesses {
  position: relative;
  background:
    radial-gradient(rgba(150, 111, 66, 0.055) 1px, transparent 1px) 0 0 / 22px 22px,
    var(--color-off-white);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
  counter-reset: card;
}

.card-grid .reveal:nth-child(1) { transition-delay: 0s; }
.card-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.card-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.card-grid .reveal:nth-child(4) { transition-delay: 0.24s; }

.business-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-grey-line);
  border-radius: var(--radius);
  padding: 2.4rem 1.8rem 2.1rem;
  overflow: hidden;
  counter-increment: card;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.business-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold-light), var(--color-gold-deep));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}
.business-card:hover::before { transform: scaleX(1); }

.business-card::after {
  content: counter(card, decimal-leading-zero);
  position: absolute;
  top: 1.6rem;
  right: 1.7rem;
  font-family: var(--font-serif);
  font-size: 0.82rem;
  color: var(--color-grey-line);
}

.business-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: transparent;
}

.card-icon {
  display: flex;
  align-items: flex-end;
  height: 34px;
  margin-bottom: 1.6rem;
  transition: transform 0.35s var(--ease);
}

.card-icon img {
  width: 20px;
  height: auto;
}

.business-card:hover .card-icon {
  transform: translateY(-3px);
}

.business-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5em;
  padding-right: 1.4rem;
}

.business-card p {
  font-size: 0.93rem;
  margin-bottom: 1.6em;
}

.card-tag {
  display: inline-block;
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-grey-mid);
  border: 1px dashed var(--color-grey-line);
  border-radius: 999px;
  padding: 0.3em 0.85em;
}

/* 9. Approach ------------------------------------------------------------------ */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.2rem;
}

.approach-item {
  padding-left: 1.6rem;
  border-left: 1px solid var(--color-grey-line);
}
.approach-item:first-child {
  padding-left: 0;
  border-left: none;
}

.approach-number {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-gold-deep);
  opacity: 0.9;
  margin-bottom: 0.65em;
}

.approach-item h3 {
  font-size: 1.12rem;
  margin-bottom: 0.4em;
}

.approach-item p {
  font-size: 0.93rem;
}

/* 10. Why ------------------------------------------------------------------------ */
.why {
  position: relative;
  overflow: hidden;
  background: linear-gradient(165deg, var(--color-black) 0%, var(--color-charcoal) 100%);
  color: var(--color-white);
}

.why::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(253, 253, 253, 0.02) 0 1px, transparent 1px 60px);
  pointer-events: none;
}

.why .container { position: relative; z-index: 1; }

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.why-copy h2 {
  color: var(--color-white);
  font-size: clamp(2rem, 3.2vw, 2.75rem);
}

.why-copy p {
  color: rgba(253, 253, 253, 0.72);
  font-size: 1.01rem;
}

.why-points {
  display: flex;
  flex-direction: column;
  gap: 1.9rem;
  counter-reset: whyp;
}

.why-points li {
  position: relative;
  padding-left: 2.6rem;
}

.why-points li::before {
  counter-increment: whyp;
  content: counter(whyp, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.05em;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-gold-light);
}

.why-points li::after {
  content: "";
  position: absolute;
  left: 0;
  top: 1.85em;
  width: 1.3rem;
  height: 1px;
  background: rgba(181, 137, 86, 0.4);
}

.why-points strong {
  display: block;
  font-size: 1.07rem;
  margin-bottom: 0.35em;
  color: var(--color-white);
}

.why-points span {
  font-size: 0.92rem;
  color: rgba(253, 253, 253, 0.65);
}

/* 11. Contact -------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.contact-copy h2 {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
}

.contact-details {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-detail {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-block: 0.9rem;
  border-bottom: 1px solid var(--color-grey-line);
}

.contact-detail dt {
  font-weight: 600;
  color: var(--color-black);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.contact-detail dd {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-charcoal);
}

.contact-detail dd a {
  transition: color 0.25s var(--ease);
}

.contact-detail dd a:hover {
  color: var(--color-gold-deep);
}

.contact-detail.placeholder dd {
  font-style: italic;
  font-size: 0.86rem;
  color: var(--color-grey-mid);
  background: var(--color-off-white);
  border: 1px dashed var(--color-grey-line);
  border-radius: 999px;
  padding: 0.3em 0.9em;
}

.contact-form {
  background: var(--color-off-white);
  border-radius: var(--radius);
  border-top: 3px solid var(--color-gold-deep);
  box-shadow: var(--shadow-soft);
  padding: clamp(2rem, 3vw, 2.8rem);
}

.hidden-field {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.form-row {
  margin-bottom: 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-row label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-charcoal);
}

.form-row input,
.form-row textarea {
  font: inherit;
  padding: 0.9em 1.05em;
  border: 1px solid var(--color-grey-line);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-charcoal);
  resize: vertical;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--color-gold-deep);
  box-shadow: 0 0 0 3px rgba(124, 90, 53, 0.14);
  outline: none;
}

.form-note {
  min-height: 1.4em;
  margin-top: 1rem;
  margin-bottom: 0;
  font-size: 0.88rem;
  color: var(--color-gold-deep);
}

/* 12. Footer ------------------------------------------------------------------------ */
.site-footer {
  position: relative;
  background: var(--color-black);
  color: rgba(253, 253, 253, 0.75);
  padding-top: 3.5rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(181, 137, 86, 0.4), transparent);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(253, 253, 253, 0.1);
}

.footer-brand .brand-mark { width: 26px; }

.footer-brand .brand-name { color: var(--color-white); }

.footer-brand p {
  margin-top: 0.6rem;
  font-size: 0.88rem;
  color: rgba(253, 253, 253, 0.55);
}

.footer-nav ul,
.footer-legal ul {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-nav a,
.footer-legal a {
  font-size: 0.9rem;
  color: rgba(253, 253, 253, 0.65);
  transition: color 0.25s var(--ease);
}

.footer-nav a:hover,
.footer-legal a:hover {
  color: var(--color-gold-light);
}

.footer-bottom {
  padding-block: 1.5rem;
}

.footer-bottom p {
  margin: 0;
  font-size: 0.8rem;
  color: rgba(253, 253, 253, 0.45);
}

/* 13. Scroll-reveal ------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

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

/* 14. Responsive ------------------------------------------------------------------------ */
@media (max-width: 960px) {
  .about-grid,
  .why-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-visual { order: -1; max-width: 360px; }

  .card-grid { grid-template-columns: repeat(2, 1fr); }

  .approach-grid { grid-template-columns: repeat(2, 1fr); }
  .approach-item:nth-child(odd) { padding-left: 0; border-left: none; }
  .approach-item:nth-child(n+3) {
    border-left: none;
    border-top: 1px solid var(--color-grey-line);
    padding-top: 1.6rem;
  }
}

@media (max-width: 900px) {
  .hero::after { content: none; }

  .main-nav {
    position: fixed;
    inset: 0;
    top: 0;
    background: rgba(14, 14, 14, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
  }

  .main-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-nav ul {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }

  .main-nav a { font-size: 1.4rem; }

  .nav-toggle { display: flex; }

  .header-actions .btn-sm { display: none; }
}

@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }

  .approach-grid { grid-template-columns: 1fr; }
  .approach-item,
  .approach-item:nth-child(odd),
  .approach-item:nth-child(n+3) {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--color-grey-line);
    padding-top: 1.6rem;
  }
  .approach-item:first-child {
    border-top: none;
    padding-top: 0;
  }

  .contact-detail {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}

@media (max-width: 420px) {
  .hero-inner { padding-top: 5.5rem; }
  .hero-title { font-size: 2.2rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
}