/* ═══════════════════════════════════════════════════════════
   DESIGN TOKENS — Warm Beige/Rose Theme
═══════════════════════════════════════════════════════════ */
:root {
  --bg-primary:    #faf6f2;
  --bg-secondary:  #f3ebe3;
  --bg-card:       #ffffff;
  --bg-accent:     #f5ece4;

  --accent:        #c9a088;
  --accent-dark:   #a97c62;
  --accent-rose:   #d4a89a;
  --accent-light:  #e8d5c4;
  --accent-bg:     rgba(201, 160, 136, 0.1);

  --text-primary:   #2d2420;
  --text-secondary: #6b5b52;
  --text-muted:     #a09488;

  --border:        #e8ddd4;
  --border-hover:  #c9a088;

  --shadow-sm:     0 2px 8px rgba(45, 36, 32, 0.05);
  --shadow-md:     0 8px 32px rgba(45, 36, 32, 0.08);
  --shadow-lg:     0 16px 48px rgba(45, 36, 32, 0.1);

  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-lg:   1.125rem;
  --fs-xl:   1.5rem;
  --fs-2xl:  2rem;
  --fs-3xl:  2.75rem;
  --fs-4xl:  4.5rem;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --nav-h: 72px;
  --container-max: 1100px;
  --section-pad: 100px;

  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'DM Serif Display', Georgia, serif;
}

/* ═══════════════════════════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }
em { font-family: var(--font-serif); font-style: italic; color: var(--accent-dark); }
strong { font-weight: 600; color: var(--text-primary); }

::selection {
  background: var(--accent-light);
  color: var(--text-primary);
}

/* ═══════════════════════════════════════════════════════════
   LAYOUT
═══════════════════════════════════════════════════════════ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: var(--section-pad) 0;
  position: relative;
}

/* ═══════════════════════════════════════════════════════════
   TYPOGRAPHY
═══════════════════════════════════════════════════════════ */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-bg);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.section-title {
  font-family: var(--font-body);
  font-size: var(--fs-3xl);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 50px;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    background 0.3s ease,
    box-shadow 0.3s ease,
    transform 0.25s ease,
    border-color 0.3s ease,
    color 0.3s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-dark);
  color: #fff;
  box-shadow: 0 4px 16px rgba(169, 124, 98, 0.25);
}

.btn-primary:hover {
  background: #9a6e52;
  box-shadow: 0 6px 24px rgba(169, 124, 98, 0.35);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--accent-dark);
  border: 1.5px solid var(--border);
}

.btn-ghost:hover {
  background: var(--accent-bg);
  border-color: var(--accent);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ═══════════════════════════════════════════════════════════
   TAGS / BADGES
═══════════════════════════════════════════════════════════ */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent-dark);
  background: var(--accent-bg);
  border: 1px solid rgba(201, 160, 136, 0.18);
  letter-spacing: 0.01em;
}

/* ═══════════════════════════════════════════════════════════
   ANIMATIONS — Fade In Up
═══════════════════════════════════════════════════════════ */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.skills-grid .fade-in-up:nth-child(2) { transition-delay: 0.08s; }
.skills-grid .fade-in-up:nth-child(3) { transition-delay: 0.16s; }
.skills-grid .fade-in-up:nth-child(4) { transition-delay: 0.24s; }

.projects-grid .fade-in-up:nth-child(2) { transition-delay: 0.1s; }
.projects-grid .fade-in-up:nth-child(3) { transition-delay: 0.2s; }

.about-stats .fade-in-up:nth-child(2) { transition-delay: 0.08s; }
.about-stats .fade-in-up:nth-child(3) { transition-delay: 0.16s; }

/* ═══════════════════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
  background: rgba(250, 246, 242, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-body);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-accent { color: var(--accent-dark); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  background: var(--accent-dark) !important;
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: 50px !important;
  transition: background 0.3s ease, transform 0.2s ease !important;
}

.nav-cta::after { display: none !important; }

.nav-cta:hover {
  background: #9a6e52 !important;
  transform: translateY(-1px);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}

.nav-hamburger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.35s ease, opacity 0.35s ease;
  transform-origin: center;
}

.nav-hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ═══════════════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════════════ */
#home {
  min-height: 100svh;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--bg-primary);
  overflow: hidden;
}

.hero-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 40px) 24px 40px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content { z-index: 1; }

.hero-greeting {
  font-size: var(--fs-lg);
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 4px;
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5.5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.05;
  color: var(--accent-dark);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-subheadline {
  font-size: var(--fs-xl);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 20px;
}

.hero-intro {
  font-size: var(--fs-base);
  color: var(--text-muted);
  max-width: 440px;
  margin-bottom: 36px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Hero visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-illustration {
  width: 100%;
  max-width: 380px;
}

.circuit-tree-svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

/* Sparkle dots twinkle */
.sparkle {
  animation: twinkle 3s ease-in-out infinite;
}
.s1 { animation-delay: 0s; }
.s2 { animation-delay: 0.5s; }
.s3 { animation-delay: 1s; }
.s4 { animation-delay: 1.5s; }
.s5 { animation-delay: 2s; }
.s6 { animation-delay: 2.5s; }

@keyframes twinkle {
  0%, 100% { opacity: 0.2; r: 1.5px; }
  50%       { opacity: 0.8; r: 2.5px; }
}

/* Scroll hint */
.hero-scroll-hint {
  display: flex;
  justify-content: center;
  padding: 20px 0 40px;
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid var(--border);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-dot {
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 4px;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.3; }
}

/* ═══════════════════════════════════════════════════════════
   ABOUT
═══════════════════════════════════════════════════════════ */
#about {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: var(--fs-base);
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-height: 180px;
  justify-content: center;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-value {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 3.8rem;
  font-weight: 400;
  color: var(--accent-dark);
  line-height: 1;
}

.stat-suffix {
  font-family: var(--font-serif);
  font-size: var(--fs-2xl);
  color: var(--accent-dark);
  line-height: 1;
}

.stat-label {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.4;
  margin-top: 6px;
}

/* ═══════════════════════════════════════════════════════════
   SKILLS
═══════════════════════════════════════════════════════════ */
#skills { background: var(--bg-primary); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
}

.skill-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-dark);
  flex-shrink: 0;
}

.skill-card h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.skill-desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

/* ═══════════════════════════════════════════════════════════
   PROJECTS
═══════════════════════════════════════════════════════════ */
#projects { background: var(--bg-secondary); }

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.4s ease;
  border-radius: 0 0 0 var(--radius-lg);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
}

.project-card:hover::before {
  transform: scaleY(1);
  transform-origin: top;
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.project-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--accent-light);
  line-height: 1;
  user-select: none;
  transition: color 0.35s ease;
}

.project-card:hover .project-number {
  color: var(--accent);
}

.project-links {
  display: flex;
  gap: 8px;
}

.project-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-accent);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

.project-link:hover {
  background: var(--accent-bg);
  border-color: var(--accent);
  color: var(--accent-dark);
  transform: translateY(-2px);
}

.project-card h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.project-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.project-detail-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.detail-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.detail-text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ═══════════════════════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════════════════════ */
#contact { background: var(--bg-primary); }

.contact-intro {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: -32px auto 48px;
  text-align: center;
  line-height: 1.7;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 32px;
  align-items: start;
  max-width: 880px;
  margin: 0 auto;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.form-group input,
.form-group textarea {
  background: var(--bg-accent);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--fs-base);
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  resize: none;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(201, 160, 136, 0.15);
}

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #d9534f;
}

.field-error {
  font-size: var(--fs-xs);
  color: #d9534f;
  min-height: 14px;
  display: block;
}

.form-success {
  display: none;
  align-items: center;
  gap: 8px;
  color: var(--accent-dark);
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: 8px 0;
}

.form-success.visible {
  display: flex;
}

/* Social links */
.contact-socials {
  padding-top: 8px;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.social-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-dark);
  flex-shrink: 0;
}

.social-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.social-name {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text-primary);
}

.social-handle {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════ */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  background: var(--bg-secondary);
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

footer p {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  transition: color 0.3s ease;
}

.footer-links a:hover { color: var(--accent-dark); }

.footer-dot {
  color: var(--text-muted);
  opacity: 0.4;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — TABLET
═══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  :root {
    --section-pad: 80px;
    --fs-4xl: 3.5rem;
    --fs-3xl: 2.25rem;
  }

  .hero-grid {
    gap: 32px;
  }

  .about-grid {
    gap: 40px;
  }
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE
═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  :root {
    --section-pad: 64px;
    --fs-4xl: 3rem;
    --fs-3xl: 1.8rem;
    --fs-2xl: 1.5rem;
    --fs-xl: 1.2rem;
  }

  /* Nav */
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(250, 246, 242, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s ease, opacity 0.35s ease;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links li { width: 100%; }

  .nav-links a {
    display: block;
    padding: 12px 24px;
    font-size: var(--fs-base);
  }

  .nav-links a::after { display: none; }

  .nav-cta {
    margin: 8px 24px !important;
    text-align: center;
    display: block !important;
  }

  .nav-hamburger { display: flex; }

  /* Hero */
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }

  .hero-content { order: 1; }
  .hero-visual { order: 0; }

  .hero-intro { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }

  .hero-illustration { max-width: 260px; margin: 0 auto; }

  /* About */
  .about-grid { gap: 32px; }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .stat-card { padding: 32px 16px; min-height: 150px; }
  .stat-number { font-size: 2.8rem; }

  /* Skills */
  .skills-grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root { --fs-4xl: 2.4rem; }

  .about-stats { grid-template-columns: 1fr; }

  .hero-cta {
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .hero-cta .btn { width: 100%; justify-content: center; }
}