/* Tema oscuro (default) */
:root,
[data-theme="dark"] {
  --bg: #0a0a0c;
  --bg-alt: #0f0f12;
  --surface: #131318;
  --surface-2: #1a1a20;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);
  --text: #ededf0;
  --text-muted: #9a9aa6;
  --text-dim: #6b6b78;
  --accent: #5b8cff;
  --accent-2: #8b5bff;
  --accent-soft: rgba(91,140,255,0.12);
  --navbar-bg: rgba(10,10,12,0.72);
  --placeholder-bg-1: linear-gradient(135deg, #2a2a35, #1a1a20);
  --project-m1: linear-gradient(135deg, #1e3a8a, #5b8cff);
  --project-m2: linear-gradient(135deg, #6d28d9, #8b5bff);
  --project-m3: linear-gradient(135deg, #0f766e, #14b8a6);
  --project-m4: linear-gradient(135deg, #9a3412, #f97316);
  --shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
  color-scheme: dark;
}

/* Tema claro */
[data-theme="light"] {
  --bg: #fafaff;
  --bg-alt: #f1f1f8;
  --surface: #ffffff;
  --surface-2: #f7f7fb;
  --border: rgba(10,10,30,0.08);
  --border-strong: rgba(10,10,30,0.16);
  --text: #15151c;
  --text-muted: #5a5a6a;
  --text-dim: #8a8a98;
  --accent: #3b6bf5;
  --accent-2: #7a3bf5;
  --accent-soft: rgba(59,107,245,0.10);
  --navbar-bg: rgba(250,250,255,0.78);
  --placeholder-bg-1: linear-gradient(135deg, #e2e2eb, #d2d2dc);
  --project-m1: linear-gradient(135deg, #1e3a8a, #3b6bf5);
  --project-m2: linear-gradient(135deg, #6d28d9, #7a3bf5);
  --project-m3: linear-gradient(135deg, #0f766e, #14b8a6);
  --project-m4: linear-gradient(135deg, #9a3412, #f97316);
  --shadow: 0 24px 60px -22px rgba(10,10,30,0.18);
  color-scheme: light;
}

:root {
  --radius: 14px;
  --radius-lg: 22px;
  --max-width: 1140px;
  --space: clamp(4.5rem, 8vw, 8rem);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 24px;
}

.text-accent {
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.link-accent {
  color: var(--accent);
  font-weight: 500;
  transition: color .2s ease;
}
.link-accent:hover { color: var(--accent-2); }

/* ===== BOTONES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, opacity .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 6px 20px -8px rgba(91,140,255,0.6);
}
.btn--primary:hover { opacity: 0.94; }
.btn--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn--ghost:hover { background: var(--surface); border-color: rgba(255,255,255,0.25); }
.btn--small { padding: 8px 16px; font-size: 0.875rem; }
.btn--large { padding: 14px 26px; font-size: 1rem; }
.btn--block { width: 100%; padding: 14px 20px; }

/* ===== NAVBAR ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: var(--navbar-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
}
.nav__logo-mark { color: var(--accent); display: inline-flex; }
.nav__logo-text { line-height: 1; }
.nav__logo-dot { color: var(--accent); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__links a {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color .2s ease;
  position: relative;
}
.nav__links a:not(.btn):hover { color: var(--text); }
.nav__links .btn { color: #fff; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav__toggle span {
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Toggle tema claro/oscuro */
.nav__theme {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.nav__theme:hover {
  color: var(--accent);
  border-color: var(--border-strong);
  background: var(--surface);
}
/* En dark mostramos luna (al click va a claro) */
[data-theme="dark"] .nav__theme .icon-sun,
:root:not([data-theme="light"]):not([data-theme="dark"]) .nav__theme .icon-sun { display: none; }
/* En light mostramos sol (al click va a oscuro) */
[data-theme="light"] .nav__theme .icon-moon { display: none; }

/* ===== HERO ===== */
.hero {
  position: relative;
  padding-top: clamp(9rem, 18vw, 12rem);
  padding-bottom: var(--space);
  text-align: center;
  overflow: hidden;
}
.hero__glow {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(91,140,255,0.22) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero__inner { position: relative; z-index: 1; }
.hero__slogan {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 22px;
  letter-spacing: -0.01em;
}
.hero__slogan::before {
  content: '';
  display: inline-block;
  width: 28px; height: 2px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 12px;
  border-radius: 2px;
}
.hero__eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 6px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--accent-soft);
  margin-bottom: 28px;
}
.hero__title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 24px;
}
.hero__subtitle {
  max-width: 620px;
  margin: 0 auto 40px;
  font-size: clamp(1.05rem, 2vw, 1.18rem);
  color: var(--text-muted);
}
.hero__cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 540px;
  margin: 0 auto;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.hero__stats li { display: flex; flex-direction: column; gap: 4px; }
.hero__stats strong {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__stats span { font-size: 0.85rem; color: var(--text-dim); }
.hero__region {
  margin-top: 36px;
  color: var(--text-muted);
  font-size: 0.96rem;
}
.hero__region strong { color: var(--text); }

/* ===== SECTIONS ===== */
.section { padding-block: var(--space); }
.section--alt { background: var(--bg-alt); }
.section__head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}
.section__eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section__title {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.section__desc { color: var(--text-muted); font-size: 1.05rem; }

/* ===== GRID ===== */
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

/* ===== CARDS ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .25s ease, transform .25s ease, background .25s ease;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  background: var(--surface-2);
}
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 20px;
}
.card__title {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.card__text { color: var(--text-muted); font-size: 0.96rem; }

.card--highlight {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-soft) 0%, var(--surface) 60%);
  position: relative;
}
.card--highlight::before {
  position: absolute;
  top: -10px; left: 24px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  content: 'Especialidad';
}
.card--highlight:hover {
  border-color: var(--accent-2);
}

/* ===== PROJECTS ===== */
.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .25s ease, transform .25s ease;
}
.project:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}
.project__media {
  height: 200px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background-size: cover;
  background-position: center;
}
.project__media--1 { background: var(--project-m1); }
.project__media--2 { background: var(--project-m2); }
.project__media--3 { background: var(--project-m3); }
.project__media--4 { background: var(--project-m4); }
.project__media-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 12px rgba(0,0,0,0.35);
  text-align: center;
}
.project__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 11px;
  background: rgba(255,255,255,0.18);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  color: #fff;
}
.project__body { padding: 24px; }
.project__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.project__text { color: var(--text-muted); font-size: 0.96rem; margin-bottom: 16px; }
.project__stack { display: flex; flex-wrap: wrap; gap: 8px; }
.project__stack span {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-alt);
}
.portfolio__note {
  text-align: center;
  margin-top: 48px;
  color: var(--text-muted);
  font-size: 1.05rem;
}
.project--placeholder {
  border-style: dashed;
  border-color: var(--border-strong);
  background: transparent;
}
.project--placeholder:hover { background: var(--surface); }
.project--placeholder .project__media--4 {
  background: var(--placeholder-bg-1);
}

/* ===== PROCESO ===== */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}
.process__item {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color .25s ease, transform .25s ease;
}
.process__item:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
}
.process__num {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 18px;
}
.process__title {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.process__text {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===== STACK ===== */
.stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.stack__group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  transition: border-color .25s ease, transform .25s ease;
}
.stack__group:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}
.stack__group-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.stack__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.stack__list li {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 11px;
}

/* ===== FAQ ===== */
.container--narrow { max-width: 760px; margin-inline: auto; }
.faq {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 22px;
  transition: border-color .2s ease, background .2s ease;
}
.faq__item:hover { border-color: var(--border-strong); }
.faq__item[open] {
  background: var(--surface-2);
  border-color: var(--border-strong);
}
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 0;
  font-weight: 600;
  font-size: 1.02rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform .25s ease, color .25s ease;
  flex-shrink: 0;
}
.faq__item[open] summary::after {
  content: '−';
  color: var(--accent);
}
.faq__item p {
  padding: 0 0 20px;
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
}

/* ===== WHATSAPP FLOTANTE ===== */
.wa-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 28px -6px rgba(37,211,102,0.55), 0 4px 12px rgba(0,0,0,0.3);
  z-index: 95;
  transition: transform .2s ease, box-shadow .2s ease;
  animation: wa-pulse 2.4s ease-out infinite;
}
.wa-float:hover {
  transform: scale(1.08) translateY(-2px);
  box-shadow: 0 12px 32px -4px rgba(37,211,102,0.7), 0 6px 14px rgba(0,0,0,0.35);
}
.wa-float svg { display: block; }
@keyframes wa-pulse {
  0%   { box-shadow: 0 10px 28px -6px rgba(37,211,102,0.55), 0 4px 12px rgba(0,0,0,0.3), 0 0 0 0 rgba(37,211,102,0.45); }
  70%  { box-shadow: 0 10px 28px -6px rgba(37,211,102,0.55), 0 4px 12px rgba(0,0,0,0.3), 0 0 0 18px rgba(37,211,102,0); }
  100% { box-shadow: 0 10px 28px -6px rgba(37,211,102,0.55), 0 4px 12px rgba(0,0,0,0.3), 0 0 0 0 rgba(37,211,102,0); }
}
@media (prefers-reduced-motion: reduce) {
  .wa-float { animation: none; }
}
@media (max-width: 520px) {
  .wa-float { width: 54px; height: 54px; bottom: 18px; right: 18px; }
}

/* ===== CONTACTO ===== */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact__info { padding-top: 8px; }
.contact__info .section__title { text-align: left; }
.contact__info .section__eyebrow { margin-bottom: 14px; }
.contact__text { color: var(--text-muted); margin-bottom: 32px; font-size: 1.05rem; }
.contact__list { display: flex; flex-direction: column; gap: 16px; }
.contact__list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
}
.contact__list a { color: var(--text); transition: color .2s ease; }
.contact__list a:hover { color: var(--accent); }
.contact__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  flex-shrink: 0;
}

.contact__form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color .2s ease, background .2s ease;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--text-dim); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
}
.field textarea { resize: vertical; min-height: 110px; }
.contact__form-note {
  text-align: center;
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding-top: 48px;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 32px;
}
.footer__brand { display: flex; flex-direction: column; gap: 8px; }
.footer__tagline { color: var(--text-dim); font-size: 0.9rem; }
.footer__links { display: flex; gap: 24px; }
.footer__links a { color: var(--text-muted); font-size: 0.95rem; transition: color .2s ease; }
.footer__links a:hover { color: var(--text); }
.footer__bottom {
  padding-block: 22px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ===== LEGAL ===== */
.legal { padding: 140px 0 80px; }
.legal h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}
.legal__date {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 40px;
}
.legal h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 32px 0 12px;
  letter-spacing: -0.01em;
}
.legal p, .legal ul {
  color: var(--text-muted);
  margin-bottom: 14px;
  font-size: 0.98rem;
}
.legal ul { padding-left: 22px; list-style: disc; }
.legal a { color: var(--accent); }
.legal a:hover { color: var(--accent-2); }
.footer__legal {
  display: inline-flex;
  gap: 20px;
  margin-top: 8px;
}
.footer__legal a { color: var(--text-muted); transition: color .2s ease; }
.footer__legal a:hover { color: var(--accent); }

/* ===== RESPONSIVE ===== */
@media (max-width: 860px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--2 { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; gap: 40px; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .stack { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(10,10,12,0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px 28px;
    gap: 4px;
    transform: translateY(-130%);
    transition: transform .35s cubic-bezier(.4,0,.2,1);
    z-index: 90;
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 1.05rem;
  }
  .nav__links .btn { margin-top: 12px; border-bottom: 0; }
  .nav__toggle { display: flex; }

  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; }
  .hero__stats { grid-template-columns: 1fr; gap: 18px; }

  .footer__inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .grid--3 { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .stack { grid-template-columns: 1fr; }
  .contact__form { padding: 22px; }
  .container { padding-inline: 18px; }
}

/* ===== Animaciones de entrada ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease, transform .6s ease;
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
}