/* ==========================================================================
   TesiLab — sistema de diseño
   Paleta: fondo claro + turquesa + azul marino (a partir del logotipo)
   Tipografía: Space Grotesk (display) + Inter (cuerpo) + IBM Plex Mono (utilidad)
   ========================================================================== */

:root {
  /* Color */
  --bg: #F4F7F5;
  --bg-panel: #FFFFFF;
  --bg-panel-2: #EEF4F1;
  --bg-alt: #E7EFE9;
  --ink: #16241F;
  --ink-soft: #52645D;
  --ink-faint: #7E8D86;
  --teal: #2FAE95;
  --teal-deep: #1C7C69;
  --teal-tint: rgba(47, 174, 149, 0.12);
  --navy: #33538A;
  --navy-deep: #1D3560;
  --line: rgba(22, 36, 31, 0.12);
  --line-soft: rgba(22, 36, 31, 0.06);
  --dark-bg: #0E1815;
  --dark-ink: #F3F6F4;
  --dark-line: rgba(243, 246, 244, 0.14);

  /* Type */
  --font-display: "Space Grotesk", "Inter", -apple-system, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --container: 1180px;
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;
  --shadow-card: 0 1px 2px rgba(22, 36, 31, 0.05), 0 20px 44px -22px rgba(22, 36, 31, 0.16);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  margin: 0;
  background:
    radial-gradient(ellipse 900px 700px at -8% -12%, rgba(110,140,225,0.16), transparent 60%),
    radial-gradient(ellipse 800px 650px at -10% 108%, rgba(47,174,149,0.16), transparent 60%),
    radial-gradient(ellipse 850px 700px at 108% 102%, rgba(165,125,205,0.14), transparent 60%),
    var(--bg);
  background-attachment: fixed, fixed, fixed, scroll;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }
button { font: inherit; }

:focus-visible {
  outline: 2.5px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-deep);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1.5px;
  background: var(--teal);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 22px;
  border-radius: 9px;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow .18s ease;
  border: 1.5px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(180deg, var(--teal) 0%, var(--teal-deep) 100%);
  color: #fff;
  box-shadow: 0 10px 26px -12px rgba(69, 199, 174, 0.65);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 32px -12px rgba(69, 199, 174, 0.8); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }
.btn-on-dark {
  background: #EDF3F1;
  color: #0A0C11;
}
.btn-on-dark:hover { transform: translateY(-1px); }
.btn-arrow { transition: transform 0.18s ease; }
.btn-primary:hover .btn-arrow { transform: translateX(3px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(244, 247, 245, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.site-header.is-scrolled {
  border-color: var(--line);
  background: rgba(244, 247, 245, 0.95);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.nav__logo-mark { width: 28px; height: auto; }
.nav__logo em { font-style: normal; color: var(--teal); }
.nav__menu {
  display: flex;
  align-items: center;
  gap: 30px;
  font-family: var(--font-display);
  font-size: 0.92rem;
}
.nav__menu a:not(.btn) { color: var(--ink-soft); transition: color 0.2s ease; }
.nav__menu a:not(.btn):hover { color: var(--ink); }
.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent; border: 1px solid var(--line); border-radius: 8px;
  position: relative;
}
.nav__toggle-bars,
.nav__toggle-bars::before,
.nav__toggle-bars::after {
  content: ""; position: absolute; left: 10px; width: 20px; height: 1.5px; background: var(--ink);
}
.nav__toggle-bars { top: 19px; }
.nav__toggle-bars::before { top: -6px; }
.nav__toggle-bars::after { top: 6px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 96px 0 76px; overflow: hidden; }
.hero__grid-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black 40%, transparent 85%);
}
.hero__grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center;
}
.hero__title {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.2vw, 3.4rem);
  font-weight: 600; line-height: 1.08; letter-spacing: -0.015em; color: var(--ink);
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(90deg, var(--teal), var(--navy));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lede { margin-top: 20px; font-size: 1.12rem; color: var(--ink-soft); max-width: 44ch; }
.hero__actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero__proof { margin-top: 40px; display: flex; flex-direction: column; gap: 10px; max-width: 44ch; }
.hero__proof-item {
  font-size: 0.92rem; color: var(--ink-faint); padding-left: 18px; position: relative;
}
.hero__proof-item::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal);
}
.hero__visual { display: flex; align-items: center; justify-content: center; }
.hero__logo-badge {
  width: min(100%, 380px);
  filter: drop-shadow(0 30px 60px rgba(69, 199, 174, 0.28));
}
.hero__visual.reveal { opacity: 0; transform: translateY(14px) scale(0.98); transition: opacity 0.7s ease, transform 0.7s ease; }
.hero__visual.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-panel); }
.strip__list {
  display: flex; flex-wrap: wrap; gap: 12px 34px; justify-content: center;
  padding: 18px 0; font-family: var(--font-mono); font-size: 0.82rem; color: var(--ink-faint);
}
.strip__list li { position: relative; padding-left: 16px; }
.strip__list li::before { content: "×"; position: absolute; left: 0; color: var(--teal); }

/* ---------- Section shells ---------- */
.section { padding: 92px 0; }
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__head { max-width: 640px; margin-bottom: 50px; }
.section__head .eyebrow { margin-bottom: 16px; }
.section__title {
  font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; color: var(--ink);
  font-size: clamp(1.7rem, 2.6vw, 2.35rem);
}
.section__lede { margin-top: 14px; color: var(--ink-soft); font-size: 1.04rem; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .hero__visual.reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* ---------- Teaser cards (Más de TesiLab) ---------- */
.teaser-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.teaser-card {
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 30px 28px; display: flex; flex-direction: column; gap: 12px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.teaser-card:hover { border-color: rgba(47,174,149,0.4); transform: translateY(-3px); }
.teaser-card__hook {
  font-family: var(--font-display); font-size: 1.14rem; font-weight: 600; color: var(--navy-deep);
}
.teaser-card__title { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--teal-deep); }
.teaser-card__desc { color: var(--ink-soft); font-size: 0.96rem; flex: 1; }
.teaser-card__link {
  align-self: flex-start; font-family: var(--font-display); font-weight: 600; font-size: 0.9rem; color: var(--ink);
  padding: 10px 16px; border-radius: 999px; border: 1.5px solid var(--line); margin-top: 4px;
  transition: border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.teaser-card__link:hover { border-color: var(--teal); color: var(--teal-deep); transform: translateY(-1px); }

/* ---------- Catalog ---------- */
.catalog { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.catalog-item {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.catalog-item:hover { border-color: rgba(69, 199, 174, 0.4); transform: translateY(-3px); }
.catalog-item--featured { border-color: rgba(69, 199, 174, 0.35); }
.catalog-item__media {
  height: 128px;
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(circle at 30% 20%, rgba(69,199,174,0.22), transparent 60%),
    repeating-linear-gradient(135deg, rgba(22,36,31,0.05) 0 1px, transparent 1px 14px);
  border-bottom: 1px solid var(--line);
  color: var(--teal);
}
.catalog-item__icon {
  width: 56px; height: 56px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-panel-2); border: 1px solid var(--line);
}
.catalog-item__body { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.catalog-item__top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.catalog-item__cat {
  font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-faint);
}
.catalog-item__price {
  font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--teal-deep); background: var(--teal-tint); padding: 4px 9px; border-radius: 20px; white-space: nowrap;
}
.catalog-item__title { font-family: var(--font-display); font-size: 1.24rem; font-weight: 600; color: var(--ink); }
.catalog-item__desc { color: var(--ink-soft); font-size: 0.95rem; flex: 1; }
.catalog-item__link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-size: 0.86rem; font-weight: 600; color: var(--ink);
  margin-top: 6px; align-self: flex-start;
  padding: 10px 16px; border-radius: 999px; border: 1.5px solid var(--line);
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease, color 0.18s ease;
}
.catalog-item__link:hover { border-color: var(--teal); color: var(--teal); transform: translateY(-1px); }
.catalog-item__link--primary {
  background: linear-gradient(180deg, var(--teal) 0%, var(--teal-deep) 100%);
  border-color: transparent; color: #fff;
  box-shadow: 0 10px 26px -12px rgba(69, 199, 174, 0.65);
}
.catalog-item__link--primary:hover { color: #fff; box-shadow: 0 14px 32px -12px rgba(69, 199, 174, 0.85); transform: translateY(-1px); }
.catalog-item__link--primary .btn-arrow { transition: transform 0.18s ease; }
.catalog-item__link--primary:hover .btn-arrow { transform: translateX(3px); }

/* ---------- Reel (carrete horizontal) ---------- */
.reel {
  display: flex; gap: 16px; overflow-x: auto; padding: 4px 4px 18px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
  scrollbar-width: thin; scrollbar-color: var(--line) transparent;
}
.reel::-webkit-scrollbar { height: 6px; }
.reel::-webkit-scrollbar-thumb { background: var(--line); border-radius: 6px; }
.reel-card {
  flex: 0 0 clamp(220px, 30vw, 260px);
  scroll-snap-align: start;
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 10px;
  text-decoration: none; color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.reel-card--demo { padding: 0 0 20px; overflow: hidden; }
.reel-card--demo .reel-card__frame,
.reel-card--demo .reel-card__title,
.reel-card--demo .reel-card__body { padding-left: 20px; padding-right: 20px; }
.reel-card:hover { border-color: rgba(69, 199, 174, 0.4); transform: translateY(-3px); }
.reel-card__frame {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.05em; color: var(--teal-deep);
}
.reel-card__title { font-family: var(--font-display); font-size: 1.02rem; font-weight: 600; color: var(--ink); }
.reel-card__body { font-size: 0.9rem; color: var(--ink-soft); }
.reel-card__cta {
  margin: 4px 20px 0; font-family: var(--font-display); font-weight: 600; font-size: 0.86rem; color: var(--teal-deep);
}
.reel-card__preview {
  height: 110px; position: relative; margin-bottom: 4px;
  background: linear-gradient(135deg, rgba(69,199,174,0.22), rgba(78,118,184,0.16));
  border-bottom: 1px solid var(--line);
}
.reel-card__preview--dental { background: linear-gradient(135deg, rgba(69,199,174,0.30), rgba(69,199,174,0.06)); }
.reel-card__preview--legal { background: linear-gradient(135deg, rgba(198,161,91,0.28), rgba(14,20,32,0.4)); }
.reel-card__preview--contador { background: linear-gradient(135deg, rgba(78,118,184,0.32), rgba(78,118,184,0.06)); }
.reel-card__preview--perfumeria { background: linear-gradient(135deg, rgba(181,101,75,0.30), rgba(181,101,75,0.06)); }
.reel-card__preview--boutique { background: linear-gradient(135deg, rgba(168,98,46,0.30), rgba(168,98,46,0.06)); }
.reel-card__dot {
  position: absolute; top: 12px; width: 7px; height: 7px; border-radius: 50%;
  background: rgba(22,36,31,0.35);
}
.reel-card__dot:nth-child(1){ left: 14px; }
.reel-card__dot:nth-child(2){ left: 26px; }
.reel-card__dot:nth-child(3){ left: 38px; }
.reel-label {
  font-family: var(--font-mono); font-size: 0.76rem; color: var(--ink-faint); margin: 44px 0 16px;
}
.reel-cta { margin-top: 8px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.reel-cta__note { font-size: 0.86rem; color: var(--ink-faint); }

/* ---------- Hero logo animation ---------- */
.hero__logo-badge--float {
  animation: logoFloat 3s ease-in-out infinite alternate, logoGlow 3s ease-in-out infinite alternate;
}
@keyframes logoFloat {
  from { transform: translateY(-16px) scale(1.02); }
  to { transform: translateY(16px) scale(0.98); }
}
@keyframes logoGlow {
  from { filter: drop-shadow(0 12px 22px rgba(69, 199, 174, 0.16)); }
  to { filter: drop-shadow(0 44px 78px rgba(69, 199, 174, 0.55)); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__logo-badge--float { animation: none; filter: drop-shadow(0 30px 60px rgba(69, 199, 174, 0.28)); }
}

/* ---------- Product feature ---------- */
.product { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.product__features { margin-top: 34px; display: flex; flex-direction: column; gap: 22px; }
.product__feature { display: flex; gap: 16px; }
.product__feature-mark {
  flex: none; width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid var(--line); color: var(--teal);
  font-family: var(--font-mono); font-size: 0.82rem;
  display: flex; align-items: center; justify-content: center;
}
.product__feature-text { display: flex; flex-direction: column; gap: 4px; }
.product__feature-text strong { font-family: var(--font-display); font-size: 1rem; color: var(--ink); }
.product__feature-text span { color: var(--ink-soft); font-size: 0.94rem; }
.product__cta { margin-top: 36px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.product__cta-note { font-size: 0.86rem; color: var(--ink-faint); }

.phone-mock {
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: 26px;
  padding: 18px; box-shadow: var(--shadow-card);
}
.phone-mock__screen {
  background: var(--bg-panel-2); border-radius: 18px; padding: 22px;
  border: 1px solid var(--line);
}
.phone-mock__brand { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--ink); }
.phone-mock__sub { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; color: var(--ink-faint); margin-top: 4px; }
.phone-grid { margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.phone-item { background: var(--bg-panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.phone-item__img { height: 76px; background: linear-gradient(135deg, rgba(69,199,174,0.22), rgba(69,199,174,0.05)); }
.phone-item__img--blue { background: linear-gradient(135deg, rgba(78,118,184,0.35), rgba(69,199,174,0.12)); }
.phone-item__meta { padding: 8px 10px 10px; display: flex; flex-direction: column; }
.phone-item__meta strong { font-size: 0.82rem; color: var(--ink); }
.phone-item__meta span { font-family: var(--font-mono); font-size: 0.62rem; color: var(--ink-faint); margin-top: 2px; }
.phone-mock__cta {
  margin-top: 16px; background: linear-gradient(180deg, var(--teal), var(--teal-deep));
  color: #fff; text-align: center; padding: 12px; border-radius: 10px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.88rem;
}

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step { background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 28px 24px; }
.step__num { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.05em; color: var(--teal-deep); text-transform: uppercase; }
.step__title { display: block; margin-top: 16px; font-family: var(--font-display); font-size: 1.08rem; font-weight: 600; color: var(--ink); }
.step__body { display: block; margin-top: 10px; color: var(--ink-soft); font-size: 0.94rem; }

/* ---------- Cases ---------- */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 26px 22px; }
.case-card__kicker { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-faint); }
.case-card__title { display: block; margin-top: 14px; font-family: var(--font-display); font-size: 1.08rem; font-weight: 600; color: var(--ink); }
.case-card__body { display: block; margin-top: 10px; color: var(--ink-soft); font-size: 0.94rem; }

/* ---------- CTA final ---------- */
.cta-final {
  text-align: center;
  background:
    radial-gradient(ellipse 70% 120% at 50% 0%, rgba(47,174,149,0.35), transparent 70%),
    var(--dark-bg);
  border-top: 1px solid var(--dark-line);
  border-bottom: 1px solid var(--dark-line);
}
.cta-final .eyebrow { color: var(--teal); }
.cta-final .eyebrow::before { background: var(--teal); }
.cta-final__title {
  margin-top: 16px; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em;
  font-size: clamp(1.8rem, 3vw, 2.5rem); color: var(--dark-ink);
}
.cta-final__lede { margin-top: 14px; color: rgba(243,246,244,0.7); font-size: 1.04rem; max-width: 48ch; margin-left: auto; margin-right: auto; }
.cta-final__actions { margin-top: 30px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-final .btn-ghost { border-color: var(--dark-line); color: var(--dark-ink); }
.cta-final .btn-ghost:hover { border-color: var(--teal); color: var(--teal); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 34px 0; background: var(--bg-panel); }
.footer__row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 18px; }
.footer__logo { display: flex; align-items: center; gap: 8px; font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; color: var(--ink); }
.footer__logo-mark { width: 22px; height: auto; }
.footer__links { display: flex; gap: 24px; font-family: var(--font-display); font-size: 0.86rem; }
.footer__links a { color: var(--ink-soft); }
.footer__links a:hover { color: var(--ink); }
.footer__meta {
  margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line-soft);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-family: var(--font-mono); font-size: 0.76rem; color: var(--ink-faint);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; }
  .product { grid-template-columns: 1fr; }
  .teaser-grid { grid-template-columns: 1fr; }
  .catalog { grid-template-columns: 1fr; }
  .reel-card { flex-basis: 78vw; }
  .steps { grid-template-columns: 1fr; }
  .cases { grid-template-columns: 1fr; }
  .nav__menu {
    position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(244,247,245,0.98); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: flex-start; gap: 4px; padding: 18px 28px 24px;
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .nav__menu.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__menu a:not(.btn) { padding: 10px 0; width: 100%; }
  .nav__menu .btn { margin-top: 10px; }
  .nav__toggle { display: block; }
}
@media (max-width: 560px) {
  .section { padding: 68px 0; }
  .hero { padding: 60px 0 52px; }
  .footer__row, .footer__meta { flex-direction: column; align-items: flex-start; }
}