:root {
  --bg: #06090e;
  --panel: rgba(9, 14, 20, 0.88);
  --panel-2: #0d131b;
  --text: #edf3ff;
  --muted: #aeafc6;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #d8a64b;
  --accent-2: #8cb7ff;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(164, 187, 255, 0.09), transparent 20%),
    linear-gradient(180deg, #04070b 0%, #070b11 45%, #04070b 100%);
  min-height: 100vh;
  line-height: 1.5;
}

img { display: block; width: 100%; }
a { text-decoration: none; color: inherit; }
button, input, textarea { font: inherit; }

.container {
  width: min(1200px, calc(100% - 24px));
  margin: 0 auto;
}

.section {
  padding: 90px 0;
}

.section-card {
  border-bottom: 1px solid var(--line);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
  background: rgba(6, 9, 14, 0.82);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  flex-shrink: 0;
  padding: 0;
  margin: 0;
  line-height: 1;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07111d;
  font-size: 0.95rem;
}

.brand-text { color: #f6f7fb; font-size: 0.96rem; }

.brand-logo,
.footer-logo {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  border-radius: 0;
  background: transparent;
  padding: 0;
  box-shadow: none;
}

.brand-logo {
  width: 190px;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.18));
}

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

.site-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.site-nav a {
  color: var(--muted);
  transition: color 180ms ease;
  font-size: 0.98rem;
}

.site-nav a:hover,
.site-nav a:focus-visible { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: 0;
  padding: 6px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 13px 18px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

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

.button-primary {
  background: linear-gradient(135deg, var(--accent), #f1d08d);
  color: #0c1118;
  box-shadow: 0 14px 30px rgba(216, 166, 75, 0.25);
}

.button-secondary {
  border-color: rgba(255,255,255,0.14);
  color: var(--text);
  background: rgba(255,255,255,0.03);
}

.button-outline {
  border-color: rgba(255,255,255,0.14);
  color: var(--text);
  background: transparent;
}

.full-width { width: 100%; }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(110deg, rgba(4,7,11,0.9) 0%, rgba(4,7,11,0.78) 40%, rgba(4,7,11,0.45) 100%),
    radial-gradient(circle at 18% 18%, rgba(255,255,255,0.12), transparent 16%),
    linear-gradient(135deg, #0c131c 0%, #182433 45%, #091018 100%);
  transform: scale(1.03);
}

.hero-backdrop::before,
.hero-backdrop::after {
  content: '';
  position: absolute;
  border-radius: 32px;
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  background: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
}

.hero-backdrop::before {
  inset: 22% 10% auto auto;
  width: 44%;
  height: 44%;
  transform: skew(-8deg);
}

.hero-backdrop::after {
  inset: auto auto 10% 8%;
  width: 32%;
  height: 28%;
  transform: rotate(-8deg);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4,7,11,0.15), rgba(4,7,11,0.55));
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.55fr;
  gap: 28px;
  align-items: end;
  padding: 80px 0 64px;
}

.hero-copy {
  max-width: 700px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 14px;
}

.hero h1,
.section-heading h2,
.about-copy h2,
.contact-copy h2 {
  margin: 0;
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero h1 { font-size: clamp(3.2rem, 8vw, 5.8rem); }

.lead {
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  color: #eff5ff;
  margin: 12px 0 8px;
  font-weight: 600;
}

.hero-description,
.section-heading p,
.about-copy p,
.contact-copy p,
.project-copy p,
.feature-card p,
.service-card p,
.review-card p,
.step-card p {
  color: var(--muted);
}

.hero-description { max-width: 520px; font-size: 1.05rem; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
}

.hero-highlights li {
  border: 1px solid rgba(255,255,255,0.14);
  padding: 10px 12px;
  border-radius: 999px;
  color: #edf2ff;
  background: rgba(255,255,255,0.04);
  font-size: 0.92rem;
}

.hero-panel {
  display: grid;
  gap: 16px;
}

.hero-visual-card {
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(13,19,27,0.94), rgba(9,14,19,0.98));
  box-shadow: var(--shadow);
}

.hero-visual-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.hero-visual-caption {
  padding: 14px 16px 16px;
}

.hero-visual-caption span {
  display: block;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
}

.hero-visual-caption strong {
  display: block;
  margin-top: 6px;
  color: #fff;
  font-size: 1rem;
  line-height: 1.25;
}

.stat-card {
  padding: 18px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(13,19,27,0.88), rgba(9,14,19,0.96));
  box-shadow: var(--shadow);
  min-height: 110px;
}

.stat-card strong {
  display: block;
  font-size: 2rem;
  line-height: 1;
  color: #fff;
}

.stat-card span {
  color: var(--muted);
  font-size: 0.95rem;
}

.section-heading {
  margin-bottom: 28px;
}

.section-heading.center { text-align: center; }

.section-heading h2,
.about-copy h2,
.contact-copy h2 {
  font-size: clamp(1.85rem, 4vw, 2.6rem);
  margin-bottom: 12px;
}

.feature-grid,
.project-grid,
.steps-grid,
.service-grid,
.review-grid {
  display: grid;
  gap: 18px;
}

.feature-grid { grid-template-columns: repeat(4, 1fr); }
.project-grid { grid-template-columns: repeat(2, 1fr); }
.steps-grid { grid-template-columns: repeat(4, 1fr); }
.service-grid { grid-template-columns: repeat(2, 1fr); }
.review-grid { grid-template-columns: repeat(3, 1fr); }

.feature-card,
.step-card,
.service-card,
.review-card,
.contact-card,
.project-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(13,19,27,0.92), rgba(9,14,19,0.98));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.feature-card,
.step-card,
.service-card,
.review-card { padding: 22px; }

.feature-card h3,
.step-card h3,
.service-card h3,
.project-copy h3 { margin: 0 0 10px; font-size: 1.15rem; }

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: stretch;
}

.about-copy {
  max-width: 760px;
}

.about-photo {
  display: none;
}

.about-photo::before,
.about-photo::after {
  content: '';
  position: absolute;
  border-radius: 28px;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.22);
  background: linear-gradient(145deg, rgba(255,255,255,0.12), rgba(255,255,255,0.02));
}

.about-photo::before {
  inset: 14% 10% auto auto;
  width: 58%;
  height: 42%;
  transform: skew(-8deg);
}

.about-photo::after {
  inset: auto auto 10% 8%;
  width: 40%;
  height: 30%;
  transform: rotate(7deg);
}

.image-caption {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  z-index: 1;
  padding: 14px;
  border-radius: 18px;
  background: rgba(6, 9, 14, 0.72);
  border: 1px solid rgba(255,255,255,0.12);
}

.image-caption span {
  display: block;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
}

.image-caption strong {
  display: block;
  margin-top: 6px;
  font-size: 1rem;
  line-height: 1.25;
}

.offer-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 24px;
  align-items: center;
}

.offer-copy {
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 24px;
  background: linear-gradient(180deg, rgba(13,19,27,0.92), rgba(9,14,19,0.98));
  box-shadow: var(--shadow);
}

.offer-copy h2 {
  margin: 0 0 10px;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  line-height: 1.08;
}

.offer-visual {
  border: 1px solid var(--line);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: linear-gradient(180deg, rgba(13,19,27,0.92), rgba(9,14,19,0.98));
}

.offer-visual img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

.project-card:hover,
.feature-card:hover,
.step-card:hover,
.service-card:hover,
.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(216,166,75,0.45);
  transition: transform 180ms ease, border-color 180ms ease;
}

.project-gallery {
  position: relative;
}

.project-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  object-position: center;
  display: block;
  cursor: zoom-in;
}

.project-thumbs {
  display: none;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 5, 8, 0.88);
  backdrop-filter: blur(6px);
}

.lightbox-stage {
  position: relative;
  z-index: 1;
  max-width: min(92vw, 1280px);
  max-height: 92vh;
}

.lightbox-image {
  display: block;
  max-width: min(92vw, 1280px);
  max-height: 92vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

.lightbox-close,
.lightbox-arrow {
  position: absolute;
  z-index: 2;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(6, 9, 14, 0.88);
  color: #fff;
  cursor: pointer;
}

.lightbox-close {
  top: 18px;
  right: 18px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-size: 1.5rem;
  line-height: 1;
}

.lightbox-arrow {
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-arrow-left {
  left: 18px;
}

.lightbox-arrow-right {
  right: 18px;
}

.lightbox-counter {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 2;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(6, 9, 14, 0.78);
  border: 1px solid rgba(255,255,255,0.12);
  color: #fff;
  font-size: 0.9rem;
}

.project-visual {
  height: 280px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.project-visual::before,
.project-visual::after {
  content: '';
  position: absolute;
  border-radius: 999px;
  filter: blur(0);
}

.project-visual::before {
  inset: auto auto 18px 18px;
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.12);
}

.project-visual::after {
  inset: 18px 18px auto auto;
  width: 84px;
  height: 84px;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
}

.visual-1 { background: linear-gradient(145deg, #132130 0%, #1e3a52 45%, #0a1118 100%); }
.visual-2 { background: linear-gradient(145deg, #271b18 0%, #4d3b2d 45%, #100d0d 100%); }
.visual-3 { background: linear-gradient(145deg, #12211b 0%, #31453d 45%, #0a1113 100%); }
.visual-4 { background: linear-gradient(145deg, #151522 0%, #2f3556 45%, #0d1019 100%); }

.project-visual::selection { background: transparent; }

.project-copy { padding: 18px 18px 20px; }

.project-copy span {
  display: inline-block;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  margin-bottom: 10px;
}

.step-card span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(216,166,75,0.12);
  color: var(--accent);
  font-weight: 700;
}

.service-card::before {
  content: '';
  display: block;
  width: 58px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  margin-bottom: 14px;
}

.review-card strong { color: #fff; display: block; margin-top: 14px; }

.contact-card { padding: 18px; }

.contact-card--minimal {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  padding: 18px;
}

.contact-card-inner {
  width: 100%;
  display: grid;
  justify-items: center;
  gap: 16px;
  text-align: center;
}

.contact-card-inner h3 {
  margin: 0;
  font-size: clamp(1.35rem, 2.8vw, 1.6rem);
}

.contact-card-inner .contact-wa-button {
  max-width: 320px;
  margin: 0;
}

.wa-icon {
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.contact-form { display: grid; gap: 14px; }

.contact-form label {
  display: grid;
  gap: 8px;
  color: #edf3ff;
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 12px 14px;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder { color: #9aa5bc; }

.contact-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 16px 0 10px;
  background: linear-gradient(180deg, rgba(7, 10, 14, 0.98), rgba(4, 7, 10, 0.98));
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  align-items: start;
  color: var(--muted);
  font-size: 0.95rem;
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer-logo {
  width: 140px;
  height: auto;
}

.footer-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.35;
}

.footer-column {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
}

.footer-brand-column,
.footer-contacts,
.footer-socials {
  text-align: center;
}

.footer-contacts,
.footer-socials {
  display: grid;
  gap: 6px;
}

.footer-column h4 {
  margin: 0 0 2px;
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.footer-contacts p,
.footer-socials a {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.35;
}

.footer-socials {
  justify-items: center;
  text-align: center;
  align-items: center;
}

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.footer-social-button {
  padding: 9px 12px;
  font-size: 0.88rem;
  white-space: nowrap;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(216, 166, 75, 0.35);
  background: rgba(255, 255, 255, 0.06);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.84rem;
}

.footer-bottom p {
  margin: 0;
}

.whatsapp-fab {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: linear-gradient(135deg, #25d366, #128c7e);
  box-shadow: 0 16px 26px rgba(19, 140, 126, 0.35);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.whatsapp-fab:hover { transform: translateY(-2px) scale(1.03); box-shadow: 0 18px 30px rgba(19, 140, 126, 0.45); }

.whatsapp-fab svg { width: 28px; height: 28px; fill: #fff; }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }
  .about-grid,
  .contact-grid,
  .hero-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-panel { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .site-nav {
    position: absolute;
    top: 76px;
    left: 12px;
    right: 12px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    background: rgba(7, 10, 14, 0.98);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 14px;
    box-shadow: var(--shadow);
  }

  .site-nav.open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .nav-cta { display: none; }
  .project-grid,
  .service-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-shell { min-height: 68px; gap: 10px; }
  .brand-logo { width: 150px; }
  .section { padding: 72px 0; }
  .contact-grid,
  .about-grid,
  .hero-grid { gap: 18px; }
  .footer-inner { grid-template-columns: 1fr; gap: 14px; }
  .footer-socials { align-items: center; }
  .footer-actions { justify-content: center; }
}

@media (max-width: 480px) {
  .container { width: min(100% - 14px, 1200px); }
  .section { padding: 56px 0; }
  .nav-shell { min-height: 64px; gap: 8px; }
  .brand-logo { width: 132px; }
  .site-nav {
    left: 6px;
    right: 6px;
    top: 66px;
    border-radius: 18px;
    padding: 12px;
  }
  .hero-grid { padding-top: 30px; gap: 18px; }
  .hero h1 { font-size: clamp(2.05rem, 11vw, 2.75rem); }
  .hero-copy .hero-actions,
  .hero-actions {
    display: grid;
    gap: 10px;
  }
  .hero-actions .button,
  .button { width: 100%; }
  .feature-grid,
  .steps-grid,
  .project-grid,
  .service-grid,
  .review-grid,
  .hero-panel { grid-template-columns: 1fr; }
  .feature-card,
  .step-card,
  .service-card,
  .review-card,
  .project-card,
  .contact-card { border-radius: 22px; }
  .project-card img { height: 200px; }
  .lightbox-stage { max-width: 96vw; }
  .lightbox-image { max-width: 96vw; }
  .lightbox-arrow { width: 44px; height: 44px; font-size: 1.5rem; }
  .lightbox-arrow-left { left: 10px; }
  .lightbox-arrow-right { right: 10px; }
  .lightbox-close { top: 10px; right: 10px; width: 42px; height: 42px; }
  .lightbox-counter { bottom: 10px; }
  .contact-grid { gap: 16px; }
  .contact-copy h2 { font-size: clamp(1.45rem, 7vw, 1.8rem); }
  .contact-card--minimal { min-height: auto; padding: 14px; }
  .footer-inner,
  .footer-column,
  .footer-socials { gap: 10px; }
  .footer-social-button { width: 100%; }
  .whatsapp-fab { width: 56px; height: 56px; right: 12px; bottom: 12px; border-radius: 16px; }
}

@media (max-width: 360px) {
  .container { width: min(100% - 12px, 1200px); }
  .brand-logo { width: 120px; }
  .hero h1 { font-size: clamp(1.9rem, 9.8vw, 2.35rem); }
  .site-nav a { font-size: 0.94rem; }
  .button { padding: 11px 13px; font-size: 0.94rem; }
  .project-card img { height: 180px; }
  .contact-copy p,
  .contact-list li,
  .footer-contacts p,
  .footer-socials a { font-size: 0.92rem; }
}

@media (max-width: 640px) {
  .section { padding: 70px 0; }
  .nav-shell { min-height: 68px; }
  .hero-grid { padding-top: 50px; }
  .hero h1 { font-size: clamp(2.4rem, 12vw, 3.3rem); }
  .feature-grid,
  .steps-grid,
  .hero-panel { grid-template-columns: 1fr; }
  .project-card img { height: 220px; }
  .footer-inner { grid-template-columns: 1fr; gap: 12px; }
}