/* ═══════════════════════════════════════
   RESTORING SEALIFE — LANDING PAGE
   ═══════════════════════════════════════ */

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

:root {
  --deep: #041e2e;
  --abyss: #0a2a3c;
  --ocean: #0e4d64;
  --teal: #1a8a7d;
  --kelp: #2db89a;
  --foam: #7dd8c4;
  --pale: #d4f1ec;
  --sand: #f5efe6;
  --shell: #faf8f4;
  --ink: #1c2a30;
  --muted: #5e7178;
  --coral: #e06347;
  --gold: #d4a853;

  --ff-display: 'Cormorant Garamond', Georgia, serif;
  --ff-body: 'Outfit', -apple-system, sans-serif;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-body);
  color: var(--ink);
  background: var(--shell);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ──────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.5s, backdrop-filter 0.5s, box-shadow 0.5s;
}
nav.scrolled {
  background: rgba(4, 30, 46, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}
.nav-logo {
  font-family: var(--ff-display);
  font-size: 1.35rem;
  font-weight: 400;
  color: #fff;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.nav-logo span { color: var(--foam); font-style: italic; }
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.82rem;
  font-weight: 400;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--foam); }
.nav-cta {
  font-size: 0.8rem !important;
  font-weight: 500 !important;
  color: var(--deep) !important;
  background: var(--foam);
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  transition: background 0.3s, transform 0.3s !important;
}
.nav-cta:hover {
  background: #fff !important;
  transform: translateY(-1px);
}

/* ── HAMBURGER (mobile) ──────────── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ── HERO ─────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 2rem 10rem;
  background: var(--deep);
  overflow: hidden;
}

/* Animated ocean gradient */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 120% 80% at 20% 80%, rgba(26, 138, 125, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse 100% 60% at 80% 60%, rgba(14, 77, 100, 0.35) 0%, transparent 50%),
    radial-gradient(ellipse 80% 100% at 50% 100%, rgba(45, 184, 154, 0.12) 0%, transparent 40%);
  animation: shimmer 12s ease-in-out infinite alternate;
}

@keyframes shimmer {
  0% { opacity: 0.7; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.05); }
}

/* Wave texture overlay */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: var(--shell);
  clip-path: ellipse(75% 100% at 50% 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--foam);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.3s forwards;
}
.hero-badge::before, .hero-badge::after {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--foam);
  opacity: 0.4;
}

.hero h1 {
  font-family: var(--ff-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 300;
  color: #fff;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.75rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.5s forwards;
}
.hero h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--foam);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 300;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 2.5rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.7s forwards;
}

.hero-image {
  width: min(100%, 720px);
  margin: 0 auto 2.5rem;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 24px 60px rgba(0,0,0,0.28);
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.8s forwards;
}

.hero-image img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.9s forwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--deep);
  background: var(--foam);
  border: none;
  padding: 0.9rem 2rem;
  border-radius: 100px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
}
.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(125, 216, 196, 0.25);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-body);
  font-size: 0.9rem;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.9rem 2rem;
  border-radius: 100px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.14);
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}

/* Scroll indicator */
.scroll-hint {
  position: absolute;
  bottom: 140px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 1.3s forwards;
}
.scroll-hint span {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--foam));
  margin: 0 auto;
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.7); }
  50% { opacity: 1; transform: scaleY(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── SECTION BASE ─────────────────── */
section {
  padding: 6rem 2rem;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
}
.section-eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1rem;
}
.section-heading {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  color: var(--deep);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}
.section-heading em { font-style: italic; color: var(--ocean); }
.section-intro {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
  max-width: 760px;
}
.source-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.25rem;
}
.source-list a,
.source-row a {
  color: var(--ocean);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  border-bottom: 1px solid rgba(14, 77, 100, 0.25);
}
.source-list a:hover,
.source-row a:hover {
  color: var(--teal);
  border-color: var(--teal);
}
.source-list.dark a {
  color: var(--foam);
  border-color: rgba(125, 216, 196, 0.35);
}
.source-row {
  margin-top: 0.8rem;
}

/* ── PROBLEM ──────────────────────── */
.problem {
  background: var(--shell);
}
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.problem-text p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-weight: 300;
}
.problem-visual {
  display: grid;
  gap: 1rem;
}
.stat-card {
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s;
}
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.stat-number {
  font-family: var(--ff-display);
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--ocean);
  line-height: 1;
  margin-bottom: 0.35rem;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.5;
}
.stat-card.highlight {
  background: var(--deep);
  border-color: transparent;
}
.stat-card.highlight .stat-number { color: var(--foam); }
.stat-card.highlight .stat-label { color: rgba(255,255,255,0.6); }
.stat-card.highlight .source-row a {
  color: var(--foam);
  border-color: rgba(125, 216, 196, 0.35);
}

/* ── EVIDENCE ─────────────────────── */
.evidence {
  background: var(--shell);
  padding-top: 2rem;
}
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

/* ── SOLUTION ─────────────────────── */
.solution {
  background: var(--deep);
  position: relative;
  overflow: hidden;
}
.solution::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 80px;
  background: var(--shell);
  clip-path: ellipse(75% 100% at 50% 0%);
}
.solution .section-eyebrow { color: var(--foam); }
.solution .section-heading { color: #fff; }
.solution .section-heading em { color: var(--foam); }

.solution-intro {
  font-size: 1.15rem;
  font-weight: 300;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  max-width: 640px;
  margin-bottom: 1rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}
.feature {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 2rem;
  transition: background 0.4s, border-color 0.4s, transform 0.4s var(--ease-out);
}
.feature:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(125, 216, 196, 0.2);
  transform: translateY(-4px);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(125, 216, 196, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
}
.feature h3 {
  font-family: var(--ff-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: #fff;
  margin-bottom: 0.6rem;
}
.feature p {
  font-size: 0.88rem;
  font-weight: 300;
  color: rgba(255,255,255,0.5);
  line-height: 1.65;
}

/* ── ABOUT ────────────────────────── */
.about {
  background: var(--sand);
}
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 3rem;
  align-items: start;
}
.about p {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
}
.note-card {
  background: #fff;
  border: 1px solid rgba(14, 77, 100, 0.1);
  border-radius: 14px;
  padding: 1.5rem;
}
.note-card h3 {
  font-family: var(--ff-display);
  font-size: 1.25rem;
  color: var(--deep);
  margin-bottom: 0.6rem;
}
.note-card p {
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ── HOW IT WORKS ─────────────────── */
.how-it-works {
  background: var(--shell);
  position: relative;
}
.how-it-works::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 80px;
  background: var(--deep);
  clip-path: ellipse(75% 100% at 50% 0%);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  counter-reset: step;
}
.step {
  position: relative;
  counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--ff-display);
  font-size: 3rem;
  font-weight: 300;
  color: var(--pale);
  line-height: 1;
  margin-bottom: 1rem;
  display: block;
}
.step h3 {
  font-family: var(--ff-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--deep);
  margin-bottom: 0.5rem;
}
.step p {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.65;
}
/* Connecting line */
.step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 1.5rem;
  right: -1rem;
  width: calc(2rem);
  height: 1px;
  background: var(--pale);
}

/* ── PROJECTS ─────────────────────── */
.sites {
  background: #fff;
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.project-card {
  background: var(--shell);
  border: 1px solid rgba(0,0,0,0.05);
  border-radius: 14px;
  padding: 1.75rem;
}
.project-card.priority {
  border-color: rgba(224, 99, 71, 0.4);
}
.project-card.compact {
  background: #fff;
}
.project-card h3 {
  font-family: var(--ff-display);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.25;
  color: var(--deep);
  margin: 0.75rem 0 1rem;
}
.project-card p {
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.65;
}
.project-note {
  color: var(--coral) !important;
  font-weight: 500 !important;
  margin-bottom: 1rem;
}
.detail-list {
  display: grid;
  gap: 0.7rem;
  margin: 1rem 0 1.25rem;
}
.detail-list div {
  display: grid;
  grid-template-columns: minmax(120px, 0.42fr) minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid rgba(14, 77, 100, 0.08);
}
.detail-list dt {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ocean);
}
.detail-list dd {
  font-size: 0.85rem;
  font-weight: 300;
  line-height: 1.55;
  color: var(--muted);
}
.sites-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.site-card {
  border-radius: 14px;
  padding: 1.75rem 1.5rem;
  background: var(--shell);
  border: 1px solid rgba(0,0,0,0.04);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s;
  position: relative;
  overflow: hidden;
}
.site-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.06);
}
.site-card.priority {
  border-color: var(--coral);
  border-width: 1.5px;
}
.site-priority-tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 0.75rem;
}
.site-name {
  font-family: var(--ff-display);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--deep);
  margin-bottom: 0.5rem;
}
.site-desc {
  font-size: 0.82rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.6;
}
.site-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.9rem;
}
.site-tag {
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--ocean);
  background: var(--pale);
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
}

/* ── DATA ─────────────────────────── */
.data {
  background: var(--sand);
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.metric-card {
  background: #fff;
  border: 1px solid rgba(14, 77, 100, 0.08);
  border-radius: 14px;
  padding: 1.35rem;
}
.metric-card h3 {
  min-height: 2.5rem;
  font-family: var(--ff-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ocean);
}
.metric-value {
  font-family: var(--ff-display);
  font-size: 2rem;
  font-weight: 500;
  color: var(--deep);
  line-height: 1;
  margin: 1rem 0 0.75rem;
}
.metric-card p {
  font-size: 0.8rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--muted);
}

/* ── PARTNERS ─────────────────────── */
.partners {
  background: var(--sand);
}
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
  justify-content: center;
}
.partner-pill {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--ocean);
  background: #fff;
  padding: 0.7rem 1.5rem;
  border-radius: 100px;
  border: 1px solid rgba(14, 77, 100, 0.1);
  transition: border-color 0.3s, transform 0.3s;
}
.partner-pill:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
}

/* ── CTA ──────────────────────────── */
.cta {
  background: var(--deep);
  text-align: center;
  padding: 7rem 2rem;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 70%, rgba(45, 184, 154, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 60% 80% at 70% 30%, rgba(14, 77, 100, 0.2) 0%, transparent 50%);
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin: 0 auto;
}
.cta .section-eyebrow { color: var(--foam); text-align: center; }
.cta h2 {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 300;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}
.cta h2 em { font-style: italic; color: var(--foam); }
.cta p {
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.email-form {
  display: flex;
  gap: 0.75rem;
  max-width: 440px;
  margin: 0 auto;
}
.email-form input[type="email"] {
  flex: 1;
  font-family: var(--ff-body);
  font-size: 0.9rem;
  padding: 0.85rem 1.25rem;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.06);
  color: #fff;
  outline: none;
  transition: border-color 0.3s, background 0.3s;
}
.email-form input[type="email"]::placeholder {
  color: rgba(255,255,255,0.35);
}
.email-form input[type="email"]:focus {
  border-color: var(--foam);
  background: rgba(255,255,255,0.1);
}
.email-form button {
  font-family: var(--ff-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--deep);
  background: var(--foam);
  border: none;
  padding: 0.85rem 1.75rem;
  border-radius: 100px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.3s, transform 0.3s;
}
.email-form button:hover {
  background: #fff;
  transform: translateY(-1px);
}

/* ── FOOTER ───────────────────────── */
footer {
  background: var(--abyss);
  padding: 3rem 2rem;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand {
  font-family: var(--ff-display);
  font-size: 1.1rem;
  color: rgba(255,255,255,0.5);
}
.footer-brand span { color: var(--foam); font-style: italic; }
.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-links a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--foam); }
.footer-copy {
  width: 100%;
  text-align: center;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.2);
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

/* ── SCROLL REVEAL ────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ───────────────────── */
@media (max-width: 900px) {
  .problem-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .evidence-grid { grid-template-columns: 1fr 1fr; }
  .features { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step:not(:last-child)::after { display: none; }
  .sites-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(4, 30, 46, 0.97);
    backdrop-filter: blur(20px);
    padding: 1.5rem 2rem;
    gap: 1.25rem;
  }
  .hamburger { display: flex; }
  .hero { padding: 7rem 1.5rem 8rem; }
  .hero-sub { font-size: 0.95rem; }
  section { padding: 4rem 1.5rem; }
  .evidence-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .sites-grid { grid-template-columns: 1fr; }
  .detail-list div { grid-template-columns: 1fr; gap: 0.25rem; }
  .metric-grid { grid-template-columns: 1fr; }
  .email-form { flex-direction: column; }
  .email-form button { width: 100%; }
}