/* ============================================================
   WATER. UPGRADED. — X20 Water Machine
   Light Ocean Design System
   ============================================================ */

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

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

body {
  font-family: 'Inter', sans-serif;
  background: #f0f8ff;
  color: #1a3a52;
  line-height: 1.7;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ---------- DESIGN TOKENS ---------- */
:root {
  --ocean-deep:   #003d6b;
  --ocean-mid:    #0077b6;
  --ocean-bright: #0096c7;
  --ocean-aqua:   #00b4d8;
  --ocean-light:  #90e0ef;
  --ocean-foam:   #caf0f8;
  --sky:          #e8f4fd;
  --white:        #ffffff;
  --text-dark:    #0d2c42;
  --text-mid:     #2b5876;
  --text-light:   #5a8ba8;
  --accent:       #0077b6;
  --radius:       14px;
  --shadow-sm:    0 2px 12px rgba(0,119,182,0.1);
  --shadow-md:    0 8px 32px rgba(0,119,182,0.18);
  --shadow-lg:    0 16px 48px rgba(0,60,100,0.2);
  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: all var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  box-shadow: 0 2px 24px rgba(0,100,160,0.12);
  padding: 12px 0;
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; }
.logo-wordmark {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1;
}
.logo-water {
  color: var(--ocean-deep);
  font-size: 1.1rem;
}
.logo-upgraded {
  color: var(--ocean-bright);
  font-size: 1.1rem;
  margin-left: 4px;
}
.navbar.scrolled .logo-water { color: var(--ocean-deep); }
.navbar.scrolled .logo-upgraded { color: var(--ocean-bright); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: rgba(255,255,255,0.9);
  transition: color var(--transition);
}
.navbar.scrolled .nav-links a { color: var(--text-mid); }
.nav-links a:hover { color: var(--ocean-aqua); }
.navbar.scrolled .nav-links a:hover { color: var(--ocean-bright); }
.nav-links a.nav-cta {
  background: var(--ocean-bright);
  color: white;
  padding: 10px 22px;
  border-radius: 50px;
  font-size: 0.85rem;
}
.nav-links a.nav-cta:hover { background: var(--ocean-mid); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 26px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--ocean-deep); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.72) saturate(1.2);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(0,30,60,0.55) 0%,
    rgba(0,80,140,0.35) 50%,
    rgba(0,180,216,0.2) 100%
  );
}
.hero-wave {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  z-index: 2;
  line-height: 0;
}
.hero-wave svg { width: 100%; height: 80px; }

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 120px 24px 100px;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

/* Logo Badge */
.hero-logo-area { }
.logo-badge {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(12px);
  border-radius: 50px;
  padding: 10px 22px;
}
.logo-drop-icon {
  width: 40px;
  height: 40px;
  background: var(--ocean-aqua);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: white;
}
.logo-badge-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-badge-x20 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 1.4rem;
  color: white;
  letter-spacing: 0.05em;
}
.logo-badge-sub {
  font-size: 0.72rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Nav logo image */
.nav-logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  display: block;
}
.navbar:not(.scrolled) .nav-logo-img {
  filter: brightness(0) invert(1); /* white on dark hero */
}
/* When the logo image is present, hide the text wordmark */
.nav-logo-img:not([style*="display:none"]) ~ .logo-wordmark { display: none !important; }

/* ===== BOLD HEADLINE — the key upgrade ===== */
.hero-headline-block {
  display: flex;
  flex-direction: column;
  align-items: center;
}
/* Eyebrow label above headline */
.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ocean-aqua);
  margin-bottom: 12px;
  display: block;
}

.hero-main-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(4rem, 12vw, 9rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-align: center;
  text-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 8px 32px rgba(0,100,200,0.3);
}
.hero-word-water {
  display: block;
  color: #ffffff;
}
.hero-word-upgraded {
  display: block;
  color: var(--ocean-aqua);
  /* Shimmer gradient treatment */
  background: linear-gradient(90deg, #00d4ff, #0096c7, #00e5ff, #48cae4);
  background-size: 300% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}
@keyframes shimmer {
  0%   { background-position: 0% center; }
  100% { background-position: 300% center; }
}
.hero-title-underline {
  width: 120px;
  height: 4px;
  background: linear-gradient(90deg, var(--ocean-aqua), var(--ocean-light));
  border-radius: 4px;
  margin: 18px auto 0;
}
.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 400;
  color: rgba(255,255,255,0.88);
  margin-top: 16px;
  line-height: 1.6;
}

/* Pills */
.hero-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(8px);
  color: white;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 50px;
  letter-spacing: 0.04em;
}
.pill i { color: var(--ocean-aqua); }

/* CTA */
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ocean-bright);
  color: white;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 15px 34px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  letter-spacing: 0.03em;
  box-shadow: 0 8px 32px rgba(0,150,199,0.5);
  transition: all var(--transition);
}
.btn-primary:hover {
  background: var(--ocean-mid);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,119,182,0.5);
}
.btn-primary.btn-large { font-size: 1.05rem; padding: 18px 42px; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 15px 28px;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.5);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.15);
  border-color: white;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--ocean-mid);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 30px;
  border-radius: 50px;
  border: 2px solid var(--ocean-mid);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-secondary:hover {
  background: var(--ocean-mid);
  color: white;
}

/* Scroll hint */
.hero-scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.scroll-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(-8px); opacity: 1; }
}

/* ============================================================
   SECTION SHARED STYLES
   ============================================================ */
.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ocean-bright);
  background: rgba(0,150,199,0.1);
  border: 1px solid rgba(0,150,199,0.2);
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 18px;
}
.section-label.light {
  color: white;
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.3);
}
.section-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--ocean-deep);
  line-height: 1.15;
  margin-bottom: 18px;
}
.section-sub {
  font-size: 1.1rem;
  color: var(--text-mid);
  max-width: 680px;
  margin: 0 auto 56px;
  line-height: 1.7;
}

/* ============================================================
   INTRO STRIP
   ============================================================ */
.intro-strip {
  background: var(--white);
  padding: 36px 0;
  box-shadow: var(--shadow-sm);
}
.intro-strip-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.intro-item {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 200px;
}
.intro-icon {
  width: 48px;
  height: 48px;
  background: var(--ocean-foam);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--ocean-bright);
  flex-shrink: 0;
}
.intro-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.intro-text strong {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ocean-deep);
}
.intro-text span {
  font-size: 0.8rem;
  color: var(--text-light);
}
.intro-divider {
  width: 1px;
  height: 48px;
  background: var(--ocean-foam);
}

/* ============================================================
   TECHNOLOGY
   ============================================================ */
.technology {
  background: var(--sky);
  padding: 100px 0;
  text-align: center;
}
.tech-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  text-align: left;
  margin-top: 16px;
}
.tech-split-img {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.tech-split-img img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.tech-split-img:hover img { transform: scale(1.04); }
.tech-img-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-radius: 50px;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--ocean-deep);
  box-shadow: var(--shadow-sm);
}
.tech-img-badge i { color: var(--ocean-bright); }
.tech-split-content h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--ocean-deep);
  margin-bottom: 16px;
}
.tech-split-content p {
  color: var(--text-mid);
  margin-bottom: 16px;
}
.tech-feature-list { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.tech-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-mid);
}
.tech-feature i { color: var(--ocean-aqua); font-size: 0.85rem; }

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-it-works {
  background: var(--white);
  padding: 100px 0;
  text-align: center;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  text-align: left;
}
.step-card {
  background: var(--sky);
  border: 1px solid var(--ocean-foam);
  border-radius: var(--radius);
  padding: 36px 30px;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.step-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.step-number {
  font-family: 'Montserrat', sans-serif;
  font-size: 4rem;
  font-weight: 900;
  color: var(--ocean-foam);
  line-height: 1;
  margin-bottom: 12px;
}
.step-icon-wrap {
  width: 52px;
  height: 52px;
  background: var(--ocean-bright);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: white;
  margin-bottom: 20px;
}
.step-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--ocean-deep);
  margin-bottom: 14px;
}
.step-desc { font-size: 0.92rem; color: var(--text-mid); margin-bottom: 20px; }
.contaminant-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.ctag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(220,0,0,0.07);
  color: #b91c1c;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 6px;
}
.ctag i { font-size: 0.65rem; }
.benefit-pills { display: flex; flex-direction: column; gap: 8px; }
.bpill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(0,150,199,0.08);
  color: var(--ocean-mid);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 8px;
}
.bpill i { color: var(--ocean-bright); }
.light-features { display: flex; flex-direction: column; gap: 14px; }
.lf-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-mid);
}
.lf-item i { color: var(--ocean-aqua); margin-top: 3px; flex-shrink: 0; }

/* ============================================================
   BENEFITS
   ============================================================ */
.benefits {
  background: var(--sky);
  padding: 100px 0;
  text-align: center;
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: left;
  margin-bottom: 72px;
}
.benefit-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--ocean-foam);
  transition: all var(--transition);
}
.benefit-card:hover {
  transform: translateY(-6px) rotateX(3deg);
  box-shadow: var(--shadow-md);
}
.bc-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--ocean-foam), rgba(0,180,216,0.15));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--ocean-bright);
  margin-bottom: 18px;
}
.benefit-card h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  color: var(--ocean-deep);
  margin-bottom: 10px;
}
.benefit-card p { font-size: 0.88rem; color: var(--text-mid); }

/* Photo row */
.benefits-photo-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  text-align: left;
}
.benefits-photo-wrap {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.benefits-photo-wrap img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.benefits-photo-wrap:hover img { transform: scale(1.04); }
.benefits-photo-copy h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 2rem;
  color: var(--ocean-deep);
  margin-bottom: 20px;
}
.benefits-photo-copy p { color: var(--text-mid); margin-bottom: 28px; font-size: 1rem; }

/* ============================================================
   SCIENCE
   ============================================================ */
.science {
  background: var(--white);
  padding: 100px 0;
  text-align: center;
}
.science-intro-text {
  max-width: 780px;
  margin: -24px auto 56px;
  font-size: 1rem;
  color: var(--text-mid);
  background: var(--sky);
  border-left: 4px solid var(--ocean-aqua);
  padding: 20px 28px;
  border-radius: 0 12px 12px 0;
  text-align: left;
  line-height: 1.8;
}
.studies-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}
.study-card {
  background: var(--sky);
  border: 1px solid var(--ocean-foam);
  border-radius: var(--radius);
  padding: 30px 26px;
  text-align: left;
  transition: all var(--transition);
}
.study-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.study-status {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ocean-bright);
  background: rgba(0,150,199,0.1);
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.study-card h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  color: var(--ocean-deep);
  margin-bottom: 10px;
}
.study-card p { font-size: 0.87rem; color: var(--text-mid); }
.science-metrics {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.metric-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--sky);
  border: 1px solid var(--ocean-foam);
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-mid);
}
.metric-item i { color: var(--ocean-bright); }

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  background: var(--sky);
  padding: 100px 0;
  text-align: center;
}
.faq-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}
.faq-tab {
  background: white;
  border: 1px solid var(--ocean-foam);
  color: var(--text-mid);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 9px 22px;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
}
.faq-tab:hover, .faq-tab.active {
  background: var(--ocean-bright);
  color: white;
  border-color: var(--ocean-bright);
}
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  text-align: left;
}
.faq-item {
  border-bottom: 1px solid var(--ocean-foam);
}
.faq-item.hidden { display: none; }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 0;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ocean-deep);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: color var(--transition);
}
.faq-q:hover { color: var(--ocean-bright); }
.faq-q i { font-size: 0.8rem; color: var(--ocean-bright); transition: transform var(--transition); flex-shrink: 0; }
.faq-q.open i { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-a.open {
  max-height: 300px;
  padding-bottom: 20px;
}
.faq-a p { font-size: 0.93rem; color: var(--text-mid); line-height: 1.75; }

/* ============================================================
   WAITLIST
   ============================================================ */
.waitlist {
  position: relative;
  padding: 120px 0;
  text-align: center;
  overflow: hidden;
}
.waitlist-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.waitlist-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6) saturate(1.4);
}
.waitlist-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(0,30,80,0.75) 0%,
    rgba(0,100,180,0.55) 100%
  );
}
.waitlist-inner { position: relative; z-index: 2; }
.waitlist-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: white;
  margin-bottom: 20px;
  line-height: 1.2;
}
.waitlist-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 18px;
}
.waitlist-urgency {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ocean-light);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 36px;
}
.waitlist-urgency i { color: #fbbf24; }
.waitlist-form { max-width: 560px; margin: 0 auto 20px; }
.wf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}
.waitlist-form input {
  width: 100%;
  padding: 14px 18px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  color: white;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}
.waitlist-form input::placeholder { color: rgba(255,255,255,0.6); }
.waitlist-form input:focus { border-color: var(--ocean-aqua); }
.wf-note { font-size: 0.78rem; color: rgba(255,255,255,0.55); margin-top: 12px; }
.wf-success {
  text-align: center;
  color: white;
  padding: 40px 0;
}
.wf-success i { font-size: 3rem; color: #86efac; margin-bottom: 12px; }
.wf-success h3 { font-size: 1.5rem; margin-bottom: 8px; }
.wf-success p { color: rgba(255,255,255,0.75); }
.waitlist-tagline {
  margin-top: 40px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: var(--white);
  padding: 100px 0;
}
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 72px;
  align-items: center;
}
.about-img-wrap {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-wrap img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}
.about-copy p {
  color: var(--text-mid);
  margin-bottom: 18px;
  font-size: 1rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--ocean-deep);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 32px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.footer-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}
.footer-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  margin-bottom: 8px;
}
.footer-logo-img:not([style*="display:none"]) ~ div { display: none !important; }
.footer-logo .logo-water { color: white; }
.footer-logo .logo-upgraded { color: var(--ocean-aqua); }
.footer-tagline { font-size: 0.85rem; color: rgba(255,255,255,0.45); }
.footer-links {
  display: flex;
  gap: 56px;
}
.fl-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.fl-col strong {
  color: white;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.fl-col a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.fl-col a:hover { color: var(--ocean-aqua); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-bottom p { font-size: 0.82rem; }
.footer-disclaimer { color: rgba(255,255,255,0.3); font-size: 0.75rem !important; }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  background: var(--ocean-bright);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 900;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--ocean-mid); transform: translateY(-3px); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .steps-grid { grid-template-columns: 1fr; max-width: 600px; margin: 0 auto; }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .studies-grid { grid-template-columns: 1fr; max-width: 600px; margin: 0 auto 56px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: 20px 24px;
    gap: 20px;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open a { color: var(--text-mid); }
  .nav-toggle { display: flex; }
  .hero-main-title { font-size: clamp(3.5rem, 16vw, 7rem); }
  .tech-split { grid-template-columns: 1fr; gap: 36px; }
  .benefits-grid { grid-template-columns: 1fr; }
  .benefits-photo-row { grid-template-columns: 1fr; gap: 36px; }
  .about-inner { grid-template-columns: 1fr; gap: 36px; }
  .wf-row { grid-template-columns: 1fr; }
  .intro-strip-grid { flex-direction: column; align-items: flex-start; }
  .intro-divider { width: 48px; height: 1px; }
  .footer-top { flex-direction: column; }
  .footer-links { flex-wrap: wrap; gap: 32px; }
}

@media (max-width: 480px) {
  .hero-content { gap: 20px; padding: 100px 20px 80px; }
  .hero-main-title { font-size: clamp(3rem, 18vw, 5rem); }
  .hero-pills { gap: 8px; }
  .pill { font-size: 0.74rem; padding: 6px 14px; }
  .hero-cta-group { flex-direction: column; width: 100%; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
}