/* ============================================
   AURAX – Total Shelter Solution
   Brand Colors:
   - Primary Dark: #1a1a1a
   - Secondary Dark: #0d0d0d
   - Gold Accent: #C9A96E
   - Gold Light: #E8D5A3
   - White: #FFFFFF
   - Light Gray: #f5f5f5
   - Mid Gray: #888888
   - Blue Accent: #4A90D9
============================================ */

/* ---- RESET & BASE ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --dark: #0d0d0d;
  --dark-2: #1a1a1a;
  --dark-3: #242424;
  --dark-4: #2e2e2e;
  --gold: #C9A96E;
  --gold-light: #E8D5A3;
  --gold-dark: #9E7E4A;
  --white: #FFFFFF;
  --off-white: #F8F6F2;
  --light: #f0ede8;
  --gray: #888888;
  --gray-light: #cccccc;
  --blue: #4A90D9;
  --blue-light: #6BAEE8;
  --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --shadow: 0 20px 60px rgba(0,0,0,0.15);
  --shadow-dark: 0 20px 60px rgba(0,0,0,0.5);
  --radius: 12px;
  --radius-lg: 20px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--white);
  color: var(--dark-2);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.section {
  padding: 110px 0;
}

.dark-section {
  background: var(--dark-2);
  color: var(--white);
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }


/* ============================================
   NAVIGATION
============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  border-bottom: 1px solid rgba(201, 169, 110, 0.2);
}

.nav-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  flex-shrink: 0;
}

.logo-img {
  height: 48px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: var(--transition);
}

/* Logo放大100% */
.logo-img--large {
  height: 96px;
}

.navbar.scrolled .logo-img--large {
  height: 76px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.nav-link {
  color: rgba(255,255,255,0.75);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: 8px 14px;
  border-radius: 6px;
  text-transform: uppercase;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--gold);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: calc(100% - 28px);
}

.nav-cta {
  background: var(--gold);
  color: var(--dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 11px 22px;
  border-radius: 6px;
  white-space: nowrap;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(201,169,110,0.4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}


/* ============================================
   HERO
============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Hero two-column inner layout */
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1300px;
  padding: 0 40px;
  display: grid;
  /* 左侧文字略窄，右侧视频更宽，完全不重叠 */
  grid-template-columns: 5fr 6fr;
  align-items: center;
  gap: 40px;
  margin-top: 80px; /* offset for fixed navbar */
}

/* Video container – clips video and uses screen blend to knock out white */
.hero-video-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: -40px;
  /* 确保视频列完整展示，不被文字列覆盖 */
  overflow: visible;
}

.hero-video {
  width: 100%;
  max-width: 800px;
  height: auto;
  display: block;
  /* screen blend mode: white (#fff) + dark bg = bg color → effectively removes white */
  mix-blend-mode: screen;
  /* Extra brightness/contrast to strengthen the knock-out */
  filter: brightness(1.05) contrast(1.1);
  pointer-events: none;
  user-select: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(201,169,110,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(74,144,217,0.06) 0%, transparent 50%),
    linear-gradient(160deg, #050505 0%, #0f0f0f 40%, #161616 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23C9A96E' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0;
  animation: float-particle linear infinite;
}

@keyframes float-particle {
  0% { transform: translateY(100vh) translateX(0); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.3; }
  100% { transform: translateY(-10vh) translateX(var(--drift)); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: left;
  padding: 0;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(201,169,110,0.12);
  border: 1px solid rgba(201,169,110,0.3);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--gold-light);
  text-transform: uppercase;
  margin-bottom: 40px;
  animation: fadeInDown 1s ease forwards;
  /* left-aligned: no need for text-align override */
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
  font-family: 'Montserrat', sans-serif;
  /* 缩小10%: clamp(3.15rem, 8.1vw, 7.2rem) */
  font-size: clamp(3.15rem, 8.1vw, 7.2rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 20px;
  animation: fadeInUp 1s ease 0.2s both;
}

.title-line {
  display: block;
}

.title-line.accent {
  color: transparent;
  -webkit-text-stroke: 2px var(--gold);
}

.hero-tagline {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 300;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 24px;
  animation: fadeInUp 1s ease 0.35s both;
}

.hero-sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  margin-bottom: 48px;
  animation: fadeInUp 1s ease 0.5s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: flex-start;
  animation: fadeInUp 1s ease 0.65s both;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 2;
  animation: fadeIn 1s ease 1.2s both;
}

.hero-scroll span {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, rgba(201,169,110,0.6), transparent);
  animation: scroll-anim 2s infinite;
}

@keyframes scroll-anim {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}


/* ============================================
   BUTTONS
============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gold);
  color: var(--dark);
}

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(201,169,110,0.4);
}

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

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.btn-outline-sm {
  display: inline-block;
  padding: 10px 22px;
  border: 1.5px solid rgba(201,169,110,0.5);
  color: var(--gold);
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: var(--transition);
}

.btn-outline-sm:hover {
  background: var(--gold);
  color: var(--dark);
  border-color: var(--gold);
}

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


/* ============================================
   SECTION LABELS & TITLES
============================================ */
.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-label::before {
  content: '';
  display: block;
  width: 30px;
  height: 1px;
  background: var(--gold);
}

.section-label.light {
  color: var(--gold);
}

.section-title {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--dark-2);
  margin-bottom: 24px;
}

.section-title.light {
  color: var(--white);
}

.section-title.centered {
  text-align: center;
}

.section-desc {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
  color: var(--gray);
  font-size: 1.05rem;
  line-height: 1.8;
}


/* ============================================
   ABOUT SECTION
============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-lead {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--dark-4);
  margin-bottom: 20px;
  line-height: 1.5;
}

.about-body {
  color: #555;
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 48px;
}

.about-body strong {
  color: var(--dark-2);
  font-weight: 600;
}

.about-stats {
  display: flex;
  gap: 40px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark-2);
  line-height: 1;
}

.stat-unit {
  font-size: 1.2rem;
  color: var(--gold);
}

.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
}

/* Shield Graphic */
.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.shield-graphic {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.shield-graphic svg {
  width: 200px;
  height: 200px;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 30px rgba(201,169,110,0.3));
}

.shield-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(201,169,110,0.2);
  animation: ring-pulse 3s ease-in-out infinite;
}

.ring-1 { width: 200px; height: 200px; animation-delay: 0s; }
.ring-2 { width: 250px; height: 250px; animation-delay: 0.5s; opacity: 0.6; }
.ring-3 { width: 300px; height: 300px; animation-delay: 1s; opacity: 0.3; }

@keyframes ring-pulse {
  0%, 100% { transform: scale(0.95); opacity: 0.3; }
  50% { transform: scale(1.05); opacity: 0.8; }
}


/* ============================================
   PRODUCTS GRID
============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* 4-column variant for updated product overview */
.products-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.product-card {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  border: 1px solid rgba(0,0,0,0.06);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: default;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card.featured {
  background: var(--dark-2);
  border-color: rgba(201,169,110,0.2);
}

.product-card.featured::before {
  transform: scaleX(1);
}

.product-card.featured .card-num,
.product-card.featured .card-title {
  color: var(--white);
}

.product-card.featured .card-desc {
  color: rgba(255,255,255,0.6);
}

.product-card.featured .card-link {
  color: var(--gold);
}

.card-badge {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--gold);
  color: var(--dark);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(201,169,110,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--gold);
  margin-bottom: 24px;
}

.card-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 12px;
}

.card-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark-2);
  margin-bottom: 16px;
  line-height: 1.3;
}

.card-desc {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.8;
  margin-bottom: 28px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dark-2);
  transition: var(--transition);
}

.card-link:hover {
  color: var(--gold);
  gap: 12px;
}


/* ============================================
   DETAIL SECTIONS
============================================ */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.detail-grid.reverse {
  direction: rtl;
}

.detail-grid.reverse > * {
  direction: ltr;
}

.detail-body {
  font-size: 1rem;
  line-height: 1.9;
  color: #555;
  margin-bottom: 40px;
}

.dark-section .detail-body {
  color: rgba(255,255,255,0.6);
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.feature-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(201,169,110,0.12);
  border: 1px solid rgba(201,169,110,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: var(--gold);
  flex-shrink: 0;
}

.feature-icon.gold { color: var(--gold); }
.feature-icon.blue {
  background: rgba(74,144,217,0.12);
  border-color: rgba(74,144,217,0.2);
  color: var(--blue);
}

.feature-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--dark-2);
}

.dark-section .feature-text h4 {
  color: var(--white);
}

.feature-text p {
  font-size: 0.88rem;
  color: #777;
  line-height: 1.7;
}

.dark-section .feature-text p {
  color: rgba(255,255,255,0.5);
}

/* Visual Cards */
.visual-card {
  border-radius: var(--radius-lg);
  padding: 44px;
  border: 1px solid rgba(201,169,110,0.15);
}

.light-card {
  background: var(--off-white);
  border-color: rgba(0,0,0,0.06);
}

.dark-card {
  background: rgba(255,255,255,0.04);
  border-color: rgba(201,169,110,0.15);
}

.visual-icon-lg {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  background: rgba(201,169,110,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--gold);
  margin-bottom: 24px;
}

.visual-icon-lg.gold { color: var(--gold); }
.visual-icon-lg.blue {
  background: rgba(74,144,217,0.15);
  color: var(--blue);
}

.visual-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--dark-2);
}

.dark-card h3 { color: var(--white); }

/* Spec List */
.spec-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid rgba(201,169,110,0.1);
  font-size: 0.87rem;
}

.spec-item:last-child { border-bottom: none; }

.spec-label { color: rgba(255,255,255,0.5); }
.spec-value { color: var(--gold-light); font-weight: 600; }

/* Energy Meters */
.energy-meters {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.meter-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.meter-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: #555;
}

.meter-bar {
  height: 6px;
  background: rgba(0,0,0,0.08);
  border-radius: 3px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: 3px;
  transition: width 1.8s cubic-bezier(0.25,0.46,0.45,0.94);
}

.meter-pct {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gold);
  text-align: right;
}

/* Water Stages */
.water-stages {
  display: flex;
  flex-direction: column;
}

.stage {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
}

.stage-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(74,144,217,0.15);
  border: 1px solid rgba(74,144,217,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--blue-light);
  flex-shrink: 0;
}

.stage-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 2px;
}

.stage-desc {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
}

.stage-arrow {
  font-size: 0.65rem;
  color: rgba(74,144,217,0.4);
  padding: 0 0 0 10px;
}


/* ============================================
   WHY AURAX
============================================ */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.pillar {
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--off-white);
  border: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition);
  text-align: center;
}

.pillar:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.pillar-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--dark);
  margin: 0 auto 20px;
}

.pillar h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--dark-2);
}

.pillar p {
  font-size: 0.87rem;
  color: #666;
  line-height: 1.8;
}


/* ============================================
   PROCESS SECTION
============================================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(10% + 18px);
  right: calc(10% + 18px);
  height: 1px;
  background: rgba(201,169,110,0.2);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 16px;
  position: relative;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gold);
  background: var(--dark-2);
  position: relative;
  z-index: 1;
  margin-bottom: 28px;
  transition: var(--transition);
}

.step:hover .step-num {
  background: var(--gold);
  color: var(--dark);
}

.step-line {
  display: none;
}

.step-content h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.step-content p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.75;
}


/* ============================================
   CONTACT SECTION
============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.contact-info p {
  color: #666;
  line-height: 1.9;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(201,169,110,0.1);
  border: 1px solid rgba(201,169,110,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--gold);
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
  margin-bottom: 2px;
}

.contact-value {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--dark-2);
}

/* Contact Form */
.contact-form-wrap {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid rgba(0,0,0,0.05);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid rgba(0,0,0,0.1);
  border-radius: 8px;
  font-size: 0.92rem;
  font-family: 'Inter', sans-serif;
  background: var(--white);
  color: var(--dark-2);
  transition: var(--transition);
  outline: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201,169,110,0.12);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.form-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--gray);
  text-align: center;
  justify-content: center;
}

.form-note i { color: var(--gold); }

/* Form Success */
.form-success {
  text-align: center;
  padding: 48px 0;
}

.success-icon {
  font-size: 3rem;
  color: var(--gold);
  margin-bottom: 20px;
}

.form-success h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--dark-2);
}

.form-success p {
  color: #666;
  line-height: 1.8;
}


/* ============================================
   FOOTER
============================================ */
.footer {
  background: var(--dark);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-logo {
  height: 44px;
  width: auto;
  filter: brightness(0) invert(1) opacity(0.85);
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

.footer-social a:hover {
  background: rgba(201,169,110,0.15);
  border-color: var(--gold);
  color: var(--gold);
}

.footer-links h4 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.4);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--gold);
  padding-left: 4px;
}

.footer-contact h4 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 14px;
}

.footer-contact p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.04em;
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
  transition: var(--transition);
}

.footer-legal a:hover { color: var(--gold); }


/* ============================================
   ANIMATIONS
============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Scroll-triggered reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }


/* ============================================
   ESSENTIAL SURVIVAL UTILITIES
============================================ */
.utilities-header {
  max-width: 720px;
  margin-bottom: 56px;
}

.utilities-intro {
  margin-bottom: 0;
  color: #555;
}

.utilities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.utility-card {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.utility-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.utility-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.utility-card:hover::before {
  transform: scaleX(1);
}

.utility-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(201,169,110,0.12);
  border: 1px solid rgba(201,169,110,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: var(--gold);
  margin-bottom: 18px;
}

.utility-card h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dark-2);
  margin-bottom: 10px;
  line-height: 1.35;
}

.utility-card p {
  font-size: 0.83rem;
  color: #666;
  line-height: 1.75;
}

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 1200px) {
  .products-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .utilities-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1100px) {
  .pillars-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); gap: 32px; }
  .process-steps::before { display: none; }
}

@media (max-width: 900px) {
  .container { padding: 0 28px; }
  .section { padding: 80px 0; }

  .nav-menu, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(8,8,8,0.98);
    backdrop-filter: blur(20px);
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 999;
  }

  .nav-menu.open .nav-link {
    font-size: 1.2rem;
    padding: 12px 24px;
  }

  .about-grid,
  .detail-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .detail-grid.reverse { direction: ltr; }

  .about-visual { order: -1; }
  .detail-visual { order: -1; }

  .products-grid { grid-template-columns: 1fr; }
  .products-grid-4 { grid-template-columns: 1fr 1fr; }
  .utilities-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }

  /* Hero mobile: stack vertically */
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 0 20px;
    gap: 0;
    margin-top: 100px;
  }
  .hero-content {
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
    align-items: center;
  }
  .hero-video-wrap {
    margin-right: 0;
    margin-top: -40px;
  }
  .hero-video {
    width: 100%;
  }
  .logo-img--large {
    height: 72px;
  }
  .navbar.scrolled .logo-img--large {
    height: 58px;
  }
}

@media (max-width: 600px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .about-stats { flex-direction: column; gap: 20px; }
  .pillars-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .products-grid-4 { grid-template-columns: 1fr; }
  .utilities-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .contact-form-wrap { padding: 28px; }
  .form-row { grid-template-columns: 1fr; }
  .nav-container { padding: 0 20px; }
}