/* ================================================================
   MTA METAL — Design System
   Paleta: #f39200 · #0a0a0a · #ffffff
   Display: Conthrax · UI: DM Sans
================================================================ */

@font-face {
  font-family: 'Conthrax';
  src: url('../fonts/Conthrax-SemiBold.otf') format('opentype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ================================================================
   TOKENS
================================================================ */
:root {
  --orange:       #f39200;
  --orange-dim:   rgba(243,146,0,0.45);
  --orange-faint: rgba(243,146,0,0.08);

  --bg:     #0a0a0a;
  --bg-1:   #0f0f0f;
  --bg-2:   #131313;
  --bg-3:   #181818;
  --white:  #ffffff;
  --muted:  rgba(255,255,255,0.5);
  --muted2: rgba(255,255,255,0.28);
  --border: rgba(255,255,255,0.07);
  --border-o: rgba(243,146,0,0.15);

  --font-h: 'Conthrax', 'Exo 2', sans-serif;
  --font-b: 'DM Sans', system-ui, sans-serif;

  --ease:      cubic-bezier(0.4, 0, 0.2, 1);
  --ease-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --t: 0.3s;

  --max-w:    1280px;
  --h-height: 76px;
  --pad:      40px;
  --section-py: 120px;
  --radius:   8px;
  --radius-lg: 14px;
}

/* ================================================================
   RESET
================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--h-height); }
body {
  font-family: var(--font-b);
  font-size: 15px;
  background: var(--bg);
  color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a   { text-decoration: none; color: inherit; }
ul  { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-b); }
address { font-style: normal; }
sup { font-size: 0.5em; vertical-align: super; }

.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ================================================================
   REVEALS
================================================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.85s var(--ease-expo), transform 0.85s var(--ease-expo);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ================================================================
   TIPOGRAFIA GLOBAL
================================================================ */
.s-label {
  display: inline-block;
  font-family: var(--font-b);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 20px;
}

.s-title {
  font-family: var(--font-h);
  font-size: clamp(36px, 5vw, 68px);
  font-weight: 600;
  line-height: 1.05;
  color: var(--white);
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}
.s-title .accent { color: var(--orange); }

.s-sub {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.85;
  max-width: 600px;
  margin-bottom: 56px;
}

.accent { color: var(--orange); }

.section { padding-block: var(--section-py); }

/* ================================================================
   BOTÕES
================================================================ */
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px;
  background: var(--orange); color: #000;
  font-family: var(--font-b);
  font-size: 12px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase;
  border-radius: var(--radius);
  border: 2px solid var(--orange);
  transition: background var(--t) var(--ease), color var(--t) var(--ease), transform var(--t) var(--ease);
}
.btn-primary:hover { background: transparent; color: var(--orange); transform: translateY(-2px); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px;
  background: transparent; color: rgba(255,255,255,0.6);
  font-family: var(--font-b);
  font-size: 12px; font-weight: 500;
  letter-spacing: 1px; text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease), transform var(--t) var(--ease);
}
.btn-ghost:hover { border-color: var(--orange); color: var(--orange); transform: translateY(-2px); }

.btn-submit {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 16px;
  background: var(--orange); color: #000;
  font-family: var(--font-b);
  font-size: 12px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase;
  border-radius: var(--radius);
  border: 2px solid var(--orange);
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}
.btn-submit:hover { background: transparent; color: var(--orange); }

/* ================================================================
   HEADER
================================================================ */
#header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--h-height);
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--t) var(--ease);
}
#header.scrolled { box-shadow: 0 4px 32px rgba(0,0,0,0.5); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--h-height);
}

.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo img { width: 44px; height: 44px; object-fit: contain; border-radius: 50%; }

.nav-logo-text { display: flex; flex-direction: column; }
.nav-logo-name {
  font-family: var(--font-h);
  font-size: 13px; font-weight: 600;
  color: var(--white); letter-spacing: 2px; line-height: 1.1;
}
.nav-logo-tag {
  font-size: 8px; font-weight: 500;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted2);
}

.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu a {
  font-size: 13px; font-weight: 400;
  color: var(--muted);
  position: relative; padding-bottom: 3px;
  transition: color var(--t) var(--ease);
}
.nav-menu a::after {
  content: ''; position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--orange);
  transition: width var(--t) var(--ease);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--white); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }

.btn-nav {
  padding: 10px 22px;
  background: var(--orange); color: #000;
  font-size: 11px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase;
  border-radius: var(--radius);
  border: 2px solid var(--orange);
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}
.btn-nav:hover { background: transparent; color: var(--orange); }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--white); border-radius: 1px;
  transition: transform var(--t) var(--ease), opacity var(--t) var(--ease);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ================================================================
   MOBILE MENU
================================================================ */
.mobile-menu {
  position: fixed;
  inset: var(--h-height) 0 0;
  background: var(--bg);
  z-index: 999;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 40px;
  opacity: 0; transform: translateY(-12px);
  pointer-events: none;
  transition: opacity 0.35s var(--ease-expo), transform 0.4s var(--ease-expo);
}
.mobile-menu.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.mobile-menu ul { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.mobile-menu ul a {
  font-family: var(--font-h);
  font-size: 36px; font-weight: 600;
  color: var(--white);
  transition: color var(--t) var(--ease);
}
.mobile-menu ul a:hover { color: var(--orange); }

/* ================================================================
   HERO
================================================================ */
.hero {
  background: var(--bg);
  padding-top: calc(var(--h-height) + 80px);
  padding-bottom: 96px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.hero-label {
  display: inline-block;
  font-size: 10px; font-weight: 500;
  letter-spacing: 4px; text-transform: uppercase;
  color: var(--muted2);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-h);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 600;
  line-height: 1.02;
  color: var(--white);
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 15px; font-weight: 300;
  color: var(--muted);
  margin-bottom: 40px;
  line-height: 1.7;
}
.hero-sub strong { font-weight: 500; color: rgba(255,255,255,0.75); }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 56px; }

.hero-stats { display: flex; align-items: center; gap: 24px; }
.hero-stat { display: flex; flex-direction: column; gap: 2px; }
.hero-stat strong {
  font-family: var(--font-h);
  font-size: 26px; font-weight: 600;
  color: var(--orange); line-height: 1;
}
.hero-stat span {
  font-size: 9px; font-weight: 400;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted2);
}
.hero-stat-div { width: 1px; height: 28px; background: var(--border); }

.hero-imgs {
  height: 560px;
}
.hero-img-single {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ================================================================
   PRODUTOS
================================================================ */
.produtos-section { background: var(--bg-1); }
.produtos-section .s-title { margin-bottom: 12px; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 14px;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}
.card:hover { border-color: var(--border-o); transform: translateY(-4px); }

.card-icon {
  width: 44px; height: 44px;
  background: var(--orange-faint);
  border: 1px solid var(--border-o);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--orange);
}

.card-title {
  font-family: var(--font-h);
  font-size: 18px; font-weight: 600;
  color: var(--orange); letter-spacing: 0.3px;
}

.card-desc {
  font-size: 13px; font-weight: 300;
  color: var(--muted); line-height: 1.85;
  flex: 1;
}

.card-list {
  display: flex; flex-direction: column; gap: 7px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.card-list li {
  font-size: 12px; font-weight: 400;
  color: var(--muted2);
  padding-left: 14px; position: relative;
}
.card-list li::before {
  content: '';
  position: absolute; left: 0; top: 50%;
  transform: translateY(-50%);
  width: 5px; height: 1px;
  background: var(--orange); opacity: 0.6;
}

/* ================================================================
   POR QUE MTA METAL
================================================================ */
.why-section { background: var(--bg); }

.why-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.why-title {
  font-family: var(--font-h);
  font-size: clamp(44px, 6.5vw, 84px);
  font-weight: 600;
  line-height: 1.0;
  color: var(--white);
  letter-spacing: -1px;
  margin-bottom: 24px;
}
.why-title .accent { color: var(--orange); }

.why-desc {
  font-size: 15px; font-weight: 300;
  color: var(--muted); line-height: 1.85;
  margin-bottom: 36px;
  max-width: 420px;
}

.why-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.why-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 10px;
  transition: border-color var(--t) var(--ease);
}
.why-card:hover { border-color: var(--border-o); }

.why-icon {
  width: 36px; height: 36px;
  background: var(--orange-faint);
  border: 1px solid var(--border-o);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--orange);
}

.why-card-title {
  font-family: var(--font-h);
  font-size: 14px; font-weight: 600;
  color: var(--orange); letter-spacing: 0.2px;
}

.why-card-desc {
  font-size: 12px; font-weight: 300;
  color: var(--muted); line-height: 1.75;
}

/* ================================================================
   PORTFÓLIO
================================================================ */
.portfolio-section { background: var(--bg-1); }

.port-header { text-align: center; margin-bottom: 40px; }
.port-header .s-sub { margin-inline: auto; }

.port-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
}

.filter-btn {
  padding: 9px 22px;
  background: transparent; color: var(--muted);
  font-family: var(--font-b);
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.5px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--t) var(--ease);
}
.filter-btn:hover { border-color: var(--orange); color: var(--orange); }
.filter-btn.active { background: var(--orange); color: #000; border-color: var(--orange); }

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

.port-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  background: var(--bg-3);
}
.port-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-expo), filter 0.4s var(--ease);
  filter: brightness(0.85);
}
.port-item:hover img { transform: scale(1.06); filter: brightness(1); }

.port-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  display: flex; align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}
.port-item:hover .port-overlay { opacity: 1; }
.port-overlay span {
  font-family: var(--font-h);
  font-size: 13px; font-weight: 600;
  color: var(--white); letter-spacing: 0.5px;
}

.port-item.hidden { display: none; }
.port-item:last-child:nth-child(3n+1) { grid-column: 2; }

/* ================================================================
   SOBRE
================================================================ */
.sobre-section { background: var(--bg); }

.sobre-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.sobre-left p {
  font-size: 14px; font-weight: 300;
  color: var(--muted); line-height: 1.9;
  margin-bottom: 14px;
}

.sobre-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 24px; }
.sobre-tags span {
  padding: 6px 14px;
  border: 1px solid var(--border-o);
  border-radius: 999px;
  font-size: 11px; font-weight: 500;
  color: var(--muted2);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.sobre-right { display: flex; flex-direction: column; gap: 20px; }

.sobre-num {
  font-family: var(--font-h);
  font-size: clamp(72px, 10vw, 120px);
  font-weight: 600; color: var(--orange);
  line-height: 1; letter-spacing: -3px;
}

.sobre-num-label {
  font-size: 14px; font-weight: 300;
  color: var(--muted); line-height: 1.6;
}

.sobre-stats {
  display: flex; gap: 40px; margin-top: 8px;
}
.sobre-stats div { display: flex; align-items: baseline; gap: 2px; flex-direction: column; }
.sobre-stats strong {
  font-family: var(--font-h);
  font-size: 36px; font-weight: 600;
  color: var(--white); line-height: 1;
}
.sobre-stats span { font-size: 20px; color: var(--orange); }
.sobre-stats p { font-size: 11px; color: var(--muted2); letter-spacing: 1.5px; text-transform: uppercase; }

.sobre-logo { border-radius: 50%; opacity: 0.8; margin-top: 8px; }

/* ================================================================
   CONTATO
================================================================ */
.contact-section { background: var(--bg-1); padding-block: 0; }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 90vh;
}

.contact-left {
  background: var(--bg);
  padding: 100px var(--pad);
  display: flex; flex-direction: column;
  justify-content: center; gap: 24px;
  border-right: 1px solid var(--border);
}
.contact-left p {
  font-size: 14px; font-weight: 300;
  color: var(--muted); line-height: 1.85;
  max-width: 380px;
}

.contact-details { display: flex; flex-direction: column; gap: 20px; margin-top: 8px; }
.cd-item span {
  display: block;
  font-size: 9px; font-weight: 500;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--muted2); margin-bottom: 5px;
}
.cd-item p, .cd-item a {
  font-size: 14px; font-weight: 300;
  color: var(--muted); line-height: 1.65;
}
.cd-item a:hover { color: var(--orange); }

.contact-right {
  padding: 100px var(--pad);
  background: var(--bg-2);
  display: flex; align-items: center;
}

.contact-form {
  width: 100%; max-width: 520px;
  display: flex; flex-direction: column; gap: 18px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group label {
  font-size: 9px; font-weight: 500;
  letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--muted2);
}
.form-group label span { color: var(--orange); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 13px 16px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-b); font-size: 14px; font-weight: 300;
  outline: none; resize: vertical;
  transition: border-color var(--t) var(--ease);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.12); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--orange-dim); }
.form-group select {
  appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23555' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center;
  padding-right: 40px;
}
.form-group select option { background: var(--bg-3); color: var(--white); }

/* ================================================================
   FOOTER
================================================================ */
.footer {
  background: #000;
  border-top: 1px solid var(--border);
  padding-top: 72px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand { display: flex; gap: 16px; align-items: flex-start; }
.footer-brand img { width: 48px; height: 48px; border-radius: 50%; object-fit: contain; flex-shrink: 0; }
.footer-name {
  font-family: var(--font-h);
  font-size: 12px; font-weight: 600;
  letter-spacing: 2px; color: var(--white); margin-bottom: 6px;
}
.footer-desc { font-size: 12px; font-weight: 300; color: var(--muted2); line-height: 1.8; margin-bottom: 8px; }
.footer-tag { font-size: 9px; font-weight: 500; letter-spacing: 2px; text-transform: uppercase; color: var(--orange); }

.footer-nav h5, .footer-contact h5 {
  font-size: 9px; font-weight: 500;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--muted2); margin-bottom: 18px;
}
.footer-nav ul { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { font-size: 13px; font-weight: 300; color: var(--muted2); transition: color var(--t) var(--ease); }
.footer-nav a:hover { color: var(--orange); }

.footer-contact { font-size: 13px; }
.footer-contact p, .footer-contact a { display: block; font-weight: 300; color: var(--muted2); margin-bottom: 7px; line-height: 1.65; }
.footer-contact a:hover { color: var(--orange); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-block: 24px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
}
.footer-bottom p { font-size: 11px; font-weight: 300; color: rgba(255,255,255,0.12); }

/* ================================================================
   WHATSAPP FLUTUANTE
================================================================ */
.wpp-float {
  position: fixed; bottom: 32px; right: 32px; z-index: 998;
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px 14px 16px;
  background: #25d366; border-radius: 999px;
  box-shadow: 0 4px 20px rgba(37,211,102,0.3);
  transition: transform var(--t) var(--ease-expo), box-shadow var(--t) var(--ease);
}
.wpp-float:hover { transform: translateY(-3px); box-shadow: 0 10px 36px rgba(37,211,102,0.48); }
.wpp-float span {
  font-size: 12px; font-weight: 500; color: #fff;
  white-space: nowrap;
  max-width: 0; overflow: hidden; opacity: 0;
  transition: max-width 0.4s var(--ease-expo), opacity 0.25s var(--ease);
}
.wpp-float:hover span { max-width: 140px; opacity: 1; }

/* ================================================================
   FOCUS
================================================================ */
:focus-visible { outline: 1px solid var(--orange); outline-offset: 3px; border-radius: 4px; }

/* ================================================================
   RESPONSIVE — TABLET (≤1024px)
================================================================ */
@media (max-width: 1024px) {
  :root { --section-py: 90px; --pad: 32px; }

  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-imgs { height: 400px; }

  .cards-grid { grid-template-columns: 1fr 1fr; }

  .why-inner { grid-template-columns: 1fr; gap: 56px; }
  .why-title { font-size: clamp(44px, 8vw, 72px); }

  .sobre-inner { grid-template-columns: 1fr; gap: 56px; }

  .contact-inner { grid-template-columns: 1fr; }
  .contact-left, .contact-right { padding: 72px var(--pad); }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }

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

/* ================================================================
   RESPONSIVE — MOBILE (≤768px)
================================================================ */
@media (max-width: 768px) {
  :root { --h-height: 64px; --section-py: 72px; --pad: 20px; }

  .nav-menu, .btn-nav { display: none; }
  .hamburger { display: flex; }
  .nav-logo-tag { display: none; }

  .hero-imgs { height: 300px; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }

  .cards-grid { grid-template-columns: 1fr; }

  .why-cards { grid-template-columns: 1fr; }

  .port-grid { grid-template-columns: 1fr 1fr; }
  .port-filters { gap: 8px; }
  .filter-btn { padding: 8px 14px; font-size: 11px; }

  .sobre-stats { gap: 24px; }

  .form-row { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .wpp-float { bottom: 20px; right: 16px; padding: 14px; border-radius: 50%; }
  .wpp-float span { display: none; }
}

/* ================================================================
   RESPONSIVE — SMALL (≤480px)
================================================================ */
@media (max-width: 480px) {
  .port-grid { grid-template-columns: 1fr; }
  .hero-imgs { height: 240px; }
}