:root {
  --navy: #1F3B57;
  --navy-dark: #152A3F;
  --gold: #B08D57;
  --gold-hover: #967442;
  --teal: #3E8E96;
  --teal-dark: #2E6C73;
  --bg: #F7F5F0;
  --card: #FFFFFF;
  --text: #2A2A2A;
  --text-muted: #6B6B66;
  --border: #E4E1D8;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 4px 12px rgba(31, 59, 87, 0.05);
  --shadow-hover: 0 12px 28px rgba(31, 59, 87, 0.12);
}

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

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  position: relative;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

.wrap {
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

/* Pulse indicator dot */
.pulse-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: #10B981;
  border-radius: 50%;
  margin-right: 6px;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Top bar */
.topbar {
  background: var(--navy-dark);
  color: #D9D2C4;
  font-size: 13.5px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.topbar-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-links {
  display: flex;
  gap: 22px;
  align-items: center;
}

.topbar a {
  color: #EADFC7;
  font-weight: 600;
  transition: opacity 0.2s;
}

.topbar a:hover {
  opacity: 0.85;
}

.topbar-phone {
  background: rgba(255, 255, 255, 0.12);
  padding: 5px 14px;
  border-radius: 8px;
}

/* Header & Nav */
header {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.logo-img {
  max-height: 64px;
  width: auto;
  object-fit: contain;
  mix-blend-mode: screen;
  filter: brightness(1.1);
  border-radius: 4px;
}

.logo .mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--gold), #8E6D3A);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1F3B57;
  font-size: 19px;
  font-weight: 800;
  box-shadow: 0 2px 8px rgba(176, 141, 87, 0.3);
}

.logo .title {
  display: block;
  line-height: 1.1;
}

.logo .sub {
  font-size: 11.5px;
  font-weight: 500;
  color: #C6CFD8;
  letter-spacing: 0.5px;
  display: block;
  margin-top: 3px;
}

nav.links {
  display: flex;
  gap: 32px;
  font-size: 15px;
  font-weight: 600;
}

nav.links a {
  opacity: 0.9;
  transition: opacity .15s, color .15s;
  padding: 8px 0;
  position: relative;
}

nav.links a:hover {
  opacity: 1;
  color: #E9C98C;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: 40px;
}

.nav-cta {
  background: var(--gold);
  color: #1F3B57;
  font-weight: 700;
  font-size: 14.5px;
  padding: 12px 22px;
  border-radius: 9px;
  white-space: nowrap;
  transition: background 0.2s, transform 0.15s;
  box-shadow: 0 4px 12px rgba(176, 141, 87, 0.25);
}

.nav-cta:hover {
  background: #C49E65;
  transform: translateY(-1px);
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 26px;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  padding: 72px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(176, 141, 87, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  background: rgba(176,141,87,0.2);
  border: 1px solid rgba(233,201,140,0.3);
  color: #E9C98C;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero p.lead {
  font-size: 17px;
  color: #CBD4DC;
  margin-bottom: 34px;
  max-width: 540px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 9px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: transform .2s, box-shadow .2s, background .2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--gold);
  color: #1F3B57;
  box-shadow: 0 6px 18px rgba(176,141,87,0.3);
}

.btn-primary:hover {
  background: #C49E65;
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
}

.btn-teal {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 6px 18px rgba(62,142,150,0.3);
}

.btn-teal:hover {
  background: var(--teal-dark);
}

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

.hero-visual {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}

.hero-visual .icon-house {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: 14px;
  background: linear-gradient(135deg, #2C4C6B, #1B3247);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.3);
}

.hero-visual .icon-house img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: center;
}

.stat-row div {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 14px 8px;
}

.stat-row .num {
  font-size: 24px;
  font-weight: 800;
  color: #E9C98C;
}

.stat-row .lbl {
  font-size: 12px;
  color: #B9C2CB;
  margin-top: 2px;
  font-weight: 500;
}

/* Quality strip */
.quality-strip {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.quality-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.quality-item .q-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #EAF3EF;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal-dark);
}

.quality-item .q-icon svg {
  width: 24px;
  height: 24px;
}

.quality-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}

.quality-item p {
  font-size: 13.5px;
  color: var(--text-muted);
}

/* Section Shared */
section {
  padding: 72px 0;
}

.section-head {
  max-width: 660px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-head .tag {
  color: var(--teal-dark);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  margin: 8px 0 14px;
  color: var(--navy);
  letter-spacing: -0.5px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 16px;
}

/* Units & Filter */
.unit-filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--teal);
  color: var(--navy);
}

.filter-btn.active {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
  box-shadow: 0 4px 12px rgba(31, 59, 87, 0.2);
}

.units-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 26px;
}

.unit-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
  display: flex;
  flex-direction: column;
}

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

.unit-thumb {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #D8E4E6, #C3D6D9);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.unit-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.unit-card:hover .unit-thumb img {
  transform: scale(1.05);
}

.badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: #E1F5EE;
  color: #0F6E56;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.unit-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.unit-body h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 6px;
}

.unit-meta {
  display: flex;
  gap: 16px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.unit-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.unit-card-actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.unit-cta {
  display: block;
  text-align: center;
  width: 100%;
  padding: 12px;
  border-radius: 9px;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.unit-cta:hover {
  background: var(--navy-dark);
}

.unit-cta-secondary {
  display: block;
  text-align: center;
  width: 100%;
  padding: 10px;
  border-radius: 9px;
  background: #fff;
  color: var(--navy);
  font-weight: 700;
  font-size: 13.5px;
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.unit-cta-secondary:hover {
  border-color: var(--teal);
  background: #F0F7F7;
}

.units-note {
  text-align: center;
  margin-top: 36px;
  font-size: 14.5px;
  color: var(--navy);
  background: #FFF7E8;
  border: 1px dashed #E3C98C;
  padding: 16px 24px;
  border-radius: 12px;
  line-height: 1.5;
}

/* Lightbox Modal */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 26, 38, 0.92);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox-overlay.open {
  display: flex;
}

.lightbox-content {
  background: #fff;
  border-radius: 18px;
  max-width: 720px;
  width: 100%;
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0,0,0,0.4);
}

.lightbox-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}

.lightbox-header h3 {
  color: var(--navy);
  font-size: 18px;
  font-weight: 800;
}

.lightbox-close {
  background: none;
  border: none;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.2s;
}

.lightbox-close:hover {
  color: var(--navy);
}

.lightbox-main {
  aspect-ratio: 4/3;
  background: #0D1C29;
  position: relative;
}

.lightbox-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lightbox-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 20px;
  background: linear-gradient(0deg, rgba(0,0,0,.8), transparent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.9);
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  color: var(--navy);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transition: background 0.2s;
}

.lightbox-nav:hover {
  background: #fff;
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-thumbs {
  display: flex;
  gap: 10px;
  padding: 16px 24px;
  overflow-x: auto;
}

.lightbox-thumbs img {
  width: 72px;
  height: 52px;
  object-fit: cover;
  border-radius: 8px;
  cursor: pointer;
  opacity: 0.5;
  border: 2px solid transparent;
  transition: opacity 0.2s, border-color 0.2s;
}

.lightbox-thumbs img.active {
  opacity: 1;
  border-color: var(--teal);
}

/* Gallery Section */
.gallery-strip {
  background: var(--bg);
  padding: 40px 0 72px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 16px;
  height: 440px;
}

.gallery-grid a {
  border-radius: 14px;
  overflow: hidden;
  display: block;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}

.gallery-grid a:hover img {
  transform: scale(1.04);
}

.gallery-grid .g-1 {
  grid-row: 1 / 3;
}

.gallery-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px 12px;
  background: linear-gradient(0deg, rgba(21,42,63,0.85), transparent);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
}

/* Services */
.services-section {
  background: var(--navy);
  position: relative;
}

.services-section .section-head .tag {
  color: #E9C98C;
}

.services-section .section-head h2 {
  color: #fff;
}

.services-section .section-head p {
  color: #C6CFD8;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.service-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 26px;
  transition: background 0.2s, transform 0.2s;
}

.service-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-3px);
}

.service-card .s-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(176,141,87,0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.service-card .s-icon svg {
  width: 24px;
  height: 24px;
  stroke: #E9C98C;
}

.service-card h4 {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-card p {
  color: #B9C2CB;
  font-size: 14px;
  line-height: 1.5;
}

/* Calculator Section */
.calculator-section {
  background: var(--bg);
}

.calculator-card {
  background: var(--navy-dark);
  border-radius: 24px;
  padding: 44px;
  color: #fff;
  box-shadow: var(--shadow-hover);
}

.calc-header {
  text-align: center;
  margin-bottom: 36px;
}

.calc-header h2 {
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  margin-top: 6px;
}

.calc-header p {
  color: #C6CFD8;
  font-size: 15px;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.calc-inputs .field label {
  color: #E9C98C;
}

.calc-result .res-box {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  padding: 32px;
  text-align: center;
}

.res-lbl {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: #B9C2CB;
  font-weight: 700;
  display: block;
  margin-bottom: 8px;
}

.res-amount {
  font-size: 32px;
  font-weight: 800;
  color: #E9C98C;
  margin-bottom: 12px;
}

.res-desc {
  font-size: 13px;
  color: #CBD4DC;
  margin-bottom: 24px;
  line-height: 1.4;
}

/* How It Works Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  text-align: center;
  padding: 0 14px;
}

.step .step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  margin: 0 auto 16px;
  box-shadow: 0 4px 14px rgba(62,142,150,0.3);
}

.step h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}

.step p {
  font-size: 14.5px;
  color: var(--text-muted);
}

/* Contact */
.contact-section {
  background: var(--card);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: start;
}

.contact-info h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 26px;
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
}

.contact-list .c-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #EAF3EF;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal-dark);
  flex-shrink: 0;
}

.whatsapp-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #25D366;
  color: #fff;
  font-weight: 700;
  padding: 15px 26px;
  border-radius: 10px;
  font-size: 16px;
  box-shadow: 0 6px 18px rgba(37, 211, 102, 0.3);
  transition: transform 0.2s, background 0.2s;
}

.whatsapp-btn:hover {
  background: #20BD5A;
  transform: translateY(-2px);
}

form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 14.5px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(62, 142, 150, 0.15);
}

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

.submit-btn {
  width: 100%;
  padding: 14px;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.2s, transform 0.15s;
}

.submit-btn:hover {
  background: var(--navy-dark);
  transform: translateY(-1px);
}

.form-note {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-top: 12px;
  text-align: center;
}

/* Footer */
footer {
  background: var(--navy-dark);
  color: #B9C2CB;
  padding: 48px 0 28px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.logo-footer {
  margin-bottom: 14px;
  color: #fff;
}

.footer-desc {
  font-size: 13.5px;
  color: #A0ACB9;
  line-height: 1.5;
  max-width: 380px;
}

footer h5 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
}

footer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

footer a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #8B95A0;
}

/* Responsiveness & Mobile Optimization */
body, html {
  overflow-x: hidden;
  max-width: 100%;
}

@media (max-width: 992px) {
  .hero h1 { font-size: 34px; }
  .calc-grid { grid-template-columns: 1fr; }
  .quality-grid { grid-template-columns: 1fr 1fr; }
  .nav-actions { margin-left: 16px; }
}

@media (max-width: 860px) {
  .topbar .wrap {
    justify-content: center;
    text-align: center;
    gap: 8px;
  }
  
  .topbar-links {
    width: 100%;
    justify-content: center;
    gap: 14px;
    font-size: 12.5px;
  }

  .nav {
    padding: 14px 0;
  }

  .logo-img {
    max-height: 48px;
  }

  .logo .title {
    font-size: 18px;
  }

  .logo .sub {
    font-size: 10.5px;
  }

  .nav-actions {
    margin-left: 0;
    gap: 10px;
  }

  .nav-cta {
    padding: 9px 14px;
    font-size: 13px;
  }

  .hero-grid, .contact-grid, .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero {
    padding: 40px 0 52px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero p.lead {
    font-size: 15px;
    margin-bottom: 24px;
  }

  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }

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

  .steps {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    height: auto;
    gap: 12px;
  }

  .gallery-grid .g-1 {
    grid-row: auto;
    grid-column: 1;
    aspect-ratio: 16/9;
  }

  .gallery-grid a:not(.g-1) {
    aspect-ratio: 16/10;
  }

  nav.links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navy-dark);
    flex-direction: column;
    padding: 24px 20px;
    gap: 18px;
    box-shadow: 0 12px 24px rgba(0,0,0,0.4);
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  nav.links.open {
    display: flex;
  }

  .menu-btn { display: block; }
  .field-row { grid-template-columns: 1fr; }
  .calculator-card { padding: 22px 18px; }
  
  .calc-header h2 { font-size: 22px; }
  
  input[type="text"], input[type="tel"], input[type="email"], input[type="number"], select, textarea {
    font-size: 16px !important;
  }
}

@media (max-width: 600px) {
  .quality-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .stat-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .unit-filter-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-btn {
    width: 100%;
    text-align: center;
  }

  .section-head h2 {
    font-size: 26px;
  }

  .contact-info h2 {
    font-size: 26px;
  }

  .nav-cta {
    display: none;
  }
}