/* ==========================================================
   Arosia — Nature × Intelligence
   Design tokens
   ========================================================== */
:root {
  --paper: #f4f1ea;
  --paper-2: #ebe6da;
  --ink: #0b2a33;
  --ink-2: #33545c;
  --ink-3: #6a8389;
  --line: rgba(11, 42, 51, 0.14);
  --aqua: #0f9aa0;
  --aqua-2: #5fd0cf;
  --leaf: #4f7d34;
  --sun: #e9962b;
  --alert: #c4492f;
  --deep: #061a20;
  --deep-2: #0c2a32;
  --deep-line: rgba(160, 230, 228, 0.16);
  --on-deep: #e6f2f0;
  --on-deep-2: #9fbfc0;

  --f-display: "Fraunces", Georgia, serif;
  --f-body: "Inter Tight", "Inter", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;

  --r: 18px;
  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
}

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

html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
::selection { background: var(--aqua-2); color: var(--deep); }

.wrap { width: min(var(--wrap), 100% - 2 * var(--gutter)); margin-inline: auto; }

/* ---------- Type ---------- */
h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 0.5em;
  font-variation-settings: "SOFT" 60, "opsz" 120;
}
h1 { font-size: clamp(2.8rem, 7.5vw, 6.4rem); }
h2 { font-size: clamp(2rem, 4.6vw, 3.6rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.6rem); line-height: 1.2; }
em { font-style: italic; color: var(--aqua); }
p { margin: 0 0 1em; }
.lede { font-size: clamp(1.05rem, 1.5vw, 1.25rem); color: var(--ink-2); max-width: 60ch; }

.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}
.mono { font-family: var(--f-mono); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--aqua); border-color: var(--aqua); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.on-deep .btn-ghost { color: var(--on-deep); border-color: var(--on-deep-2); }
.on-deep .btn-ghost:hover { background: var(--on-deep); color: var(--deep); }
.btn .arrow { transition: transform 0.2s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Header ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: env(safe-area-inset-top, 0px);
  z-index: 60;
  background: var(--paper);
}
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--f-display);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.brand svg { width: 30px; height: 30px; }
.brand small {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
  display: block;
  margin-top: -4px;
}
.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  font-size: 0.9rem;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--ink-2);
  transition: background 0.2s, color 0.2s;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { background: var(--paper-2); color: var(--ink); }
.nav-cta { padding: 10px 18px; font-size: 0.85rem; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  color: var(--ink);
}
@media (max-width: 1100px) {
  .nav-links, .nav .nav-cta { display: none; }
  .nav-toggle { display: grid; place-items: center; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--paper);
    padding: 16px var(--gutter) 24px;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open a { font-size: 1.1rem; padding: 12px 0; display: block; }
}

/* ---------- Sections ---------- */
section { padding: clamp(72px, 10vw, 140px) 0; position: relative; }
.section-head { display: grid; gap: 12px; margin-bottom: clamp(40px, 6vw, 72px); max-width: 820px; }
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.on-deep {
  background: var(--deep);
  color: var(--on-deep);
}
.on-deep .lede, .on-deep p { color: var(--on-deep-2); }
.on-deep .eyebrow { color: var(--aqua-2); }
.on-deep em { color: var(--aqua-2); }

/* ---------- Hero ---------- */
.hero { padding: clamp(48px, 8vw, 110px) 0 clamp(40px, 6vw, 80px); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { margin-bottom: 28px; }
.hero h1 .line { display: block; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 36px; }
.tag {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  background: rgba(255, 255, 255, 0.4);
}
.hero-visual { position: relative; aspect-ratio: 1; max-width: 560px; justify-self: center; width: 100%; }
.hero-visual svg { width: 100%; height: 100%; overflow: visible; }

.orbit { transform-origin: 250px 250px; animation: spin 40s linear infinite; }
.orbit.rev { animation-direction: reverse; animation-duration: 60s; }
@keyframes spin { to { transform: rotate(360deg); } }
.pulse { animation: pulse 3s ease-in-out infinite; transform-origin: center; transform-box: fill-box; }
@keyframes pulse { 50% { opacity: 0.35; transform: scale(1.6); } }
.ripple { animation: ripple 4s ease-out infinite; transform-origin: 250px 250px; }
.ripple.d2 { animation-delay: 1.3s; }
.ripple.d3 { animation-delay: 2.6s; }
@keyframes ripple { from { transform: scale(0.6); opacity: 0.7; } to { transform: scale(1.25); opacity: 0; } }
.wave { animation: wave 6s ease-in-out infinite alternate; }
@keyframes wave { to { transform: translateX(-40px); } }

.readout {
  position: absolute;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  line-height: 1.4;
  box-shadow: 0 8px 30px -12px rgba(11, 42, 51, 0.3);
}
.readout b { display: block; font-size: 1rem; color: var(--ink); font-weight: 600; }
.readout span { color: var(--ink-3); }
.readout.r1 { top: 10%; left: -2%; }
.readout.r2 { top: 46%; right: -4%; }
.readout.r3 { bottom: 6%; left: 10%; }
@media (max-width: 520px) { .readout { font-size: 0.62rem; } .readout b { font-size: 0.85rem; } .readout.r2 { right: 0; } .readout.r1 { left: 0; } }

/* ---------- Ticker ---------- */
.ticker {
  border-block: 1px solid var(--line);
  background: var(--paper-2);
  overflow: hidden;
  padding: 0;
}
.ticker-track {
  display: flex;
  gap: 56px;
  padding: 16px 0;
  width: max-content;
  animation: marquee 40s linear infinite;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--ink-2);
  white-space: nowrap;
}
.ticker-track span::before { content: "◆ "; color: var(--aqua); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.stat { padding: 28px 24px 8px 0; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat + .stat { padding-left: 24px; }
.stat-num { font-family: var(--f-display); font-size: clamp(2.4rem, 5vw, 4rem); line-height: 1; letter-spacing: -0.03em; }
.stat-num sup { font-size: 0.4em; vertical-align: top; color: var(--aqua); margin-left: 2px; }
.stat-label { font-size: 0.9rem; color: var(--ink-2); margin-top: 10px; }
@media (max-width: 800px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { border-bottom: 1px solid var(--line); padding: 24px 12px 20px 0 !important; }
  .stat:nth-child(2n) { border-right: 0; padding-left: 16px !important; }
}

/* ---------- Patent ---------- */
.patent-badge {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px dashed var(--sun);
  color: var(--sun);
  border-radius: 999px;
  margin-bottom: 20px;
}
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 56px;
  border: 1px solid var(--deep-line);
  border-radius: var(--r);
  overflow: hidden;
}
.step {
  padding: 28px 24px 32px;
  border-right: 1px solid var(--deep-line);
  position: relative;
}
.step:last-child { border-right: 0; }
.step-no { font-family: var(--f-mono); font-size: 0.72rem; color: var(--aqua-2); letter-spacing: 0.12em; }
.step h3 { margin: 14px 0 10px; color: var(--on-deep); }
.step p { font-size: 0.92rem; margin: 0; }
.step-icon { height: 64px; margin: 18px 0 8px; }
@media (max-width: 900px) {
  .process { grid-template-columns: 1fr 1fr; }
  .step:nth-child(2) { border-right: 0; }
  .step:nth-child(-n + 2) { border-bottom: 1px solid var(--deep-line); }
}
@media (max-width: 540px) {
  .process { grid-template-columns: 1fr; }
  .step { border-right: 0; border-bottom: 1px solid var(--deep-line); }
}
.fluoride-meter { margin-top: 32px; }
.fm-row { display: grid; grid-template-columns: 120px 1fr 70px; gap: 14px; align-items: center; margin-bottom: 14px; font-family: var(--f-mono); font-size: 0.78rem; }
.fm-bar { height: 10px; border-radius: 99px; background: rgba(255, 255, 255, 0.08); position: relative; overflow: hidden; }
.fm-bar i { position: absolute; inset: 0 auto 0 0; border-radius: inherit; width: var(--w); }
.fm-row.in .fm-bar i { animation: grow 1.6s cubic-bezier(.2,.8,.2,1); }
@keyframes grow { from { width: 0; } }
.fm-limit { font-family: var(--f-mono); font-size: 0.72rem; color: var(--on-deep-2); margin-top: 6px; }

.compare { width: 100%; border-collapse: collapse; margin-top: 18px; font-size: 0.92rem; }
.compare th, .compare td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--deep-line); }
.compare th { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--on-deep-2); font-weight: 500; }
.compare td:nth-child(2) { color: var(--aqua-2); }
.table-scroll { overflow-x: auto; }

/* ---------- Pillars (Tech stack) ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .pillars { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .pillars { grid-template-columns: 1fr; } }
.pillar {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  min-height: 300px;
}
.pillar:hover { transform: translateY(-4px); box-shadow: 0 20px 50px -24px rgba(11, 42, 51, 0.35); }
.pillar .p-idx { font-family: var(--f-mono); font-size: 0.72rem; color: var(--ink-3); display: flex; justify-content: space-between; }
.pillar .p-ico { width: 48px; height: 48px; margin: 10px 0 6px; }
.pillar h3 { margin: 0; }
.pillar p { color: var(--ink-2); font-size: 0.95rem; margin: 0; }
.pillar ul { margin: auto 0 0; padding: 14px 0 0; list-style: none; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 6px; }
.pillar li { font-family: var(--f-mono); font-size: 0.7rem; padding: 4px 9px; background: var(--paper); border-radius: 6px; color: var(--ink-2); }
.pillar.feature { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.pillar.feature p { color: #b9cfd0; }
.pillar.feature .p-idx { color: var(--aqua-2); }
.pillar.feature li { background: rgba(255, 255, 255, 0.08); color: #cfe3e2; }
.pillar.feature ul { border-top-color: rgba(255,255,255,.14); }

/* ---------- Digital Twin ---------- */
.twin {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 0;
  border: 1px solid var(--deep-line);
  border-radius: 22px;
  overflow: hidden;
  background: var(--deep-2);
}
@media (max-width: 980px) { .twin { grid-template-columns: 1fr; } }
.twin-stage { padding: 20px; border-right: 1px solid var(--deep-line); position: relative; min-width: 0; }
@media (max-width: 980px) { .twin-stage { border-right: 0; border-bottom: 1px solid var(--deep-line); } }
.twin-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--on-deep-2);
  margin-bottom: 10px;
  gap: 10px;
  flex-wrap: wrap;
}
.live-dot { display: inline-flex; align-items: center; gap: 8px; color: var(--aqua-2); }
.live-dot::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--aqua-2); box-shadow: 0 0 0 0 var(--aqua-2); animation: live 1.8s infinite; }
@keyframes live { 70% { box-shadow: 0 0 0 8px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
.twin-svg { width: 100%; height: auto; }
.twin-svg text { font-family: var(--f-mono); }
.flow-line { stroke-dasharray: 6 8; animation: flow 1.2s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -28; } }
.twin-side { padding: 22px; display: flex; flex-direction: column; gap: 18px; }
.scenarios { display: flex; flex-wrap: wrap; gap: 8px; }
.scenario {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  padding: 8px 12px;
  border-radius: 999px;
  background: transparent;
  color: var(--on-deep-2);
  border: 1px solid var(--deep-line);
  cursor: pointer;
  transition: all 0.2s;
}
.scenario:hover { color: var(--on-deep); border-color: var(--aqua-2); }
.scenario[aria-pressed="true"] { background: var(--aqua-2); color: var(--deep); border-color: var(--aqua-2); }
.gauges { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.gauge {
  border: 1px solid var(--deep-line);
  border-radius: 12px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.02);
}
.gauge .g-label { font-family: var(--f-mono); font-size: 0.66rem; color: var(--on-deep-2); letter-spacing: 0.08em; text-transform: uppercase; }
.gauge .g-val { font-family: var(--f-display); font-size: 1.7rem; line-height: 1.1; color: var(--on-deep); margin-top: 4px; }
.gauge .g-val small { font-family: var(--f-mono); font-size: 0.68rem; color: var(--on-deep-2); margin-left: 4px; }
.gauge .g-track { height: 4px; border-radius: 4px; background: rgba(255, 255, 255, 0.08); margin-top: 8px; overflow: hidden; }
.gauge .g-track i { display: block; height: 100%; background: var(--aqua-2); border-radius: inherit; transition: width 0.8s ease, background 0.4s; }
.gauge.warn .g-track i { background: var(--sun); }
.gauge.bad .g-track i { background: #ef6c4d; }
.gauge.warn .g-val { color: #f5c27a; }
.gauge.bad .g-val { color: #ff9c84; }
.ai-insight {
  border-radius: 14px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(95, 208, 207, 0.12), rgba(95, 208, 207, 0.02));
  border: 1px solid rgba(95, 208, 207, 0.3);
  font-size: 0.9rem;
  color: var(--on-deep);
  min-height: 120px;
}
.ai-insight .ai-h { font-family: var(--f-mono); font-size: 0.68rem; color: var(--aqua-2); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 8px; display: flex; gap: 8px; align-items: center; }
.ai-insight p { color: var(--on-deep); margin: 0 0 6px; }
.ai-insight .ai-act { font-family: var(--f-mono); font-size: 0.74rem; color: var(--on-deep-2); }
.spark { width: 100%; height: 60px; }
.twin-note { font-family: var(--f-mono); font-size: 0.66rem; color: var(--on-deep-2); opacity: 0.7; }

.twin-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; }
@media (max-width: 900px) { .twin-features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .twin-features { grid-template-columns: 1fr; } }
.twin-features div { border-top: 1px solid var(--deep-line); padding-top: 16px; }
.twin-features h4 { font-family: var(--f-body); font-weight: 600; font-size: 1rem; letter-spacing: 0; margin: 0 0 6px; color: var(--on-deep); }
.twin-features p { font-size: 0.9rem; margin: 0; }

/* ---------- Deep Intelligence ---------- */
.layers { display: grid; gap: 0; border-top: 1px solid var(--line); }
.layer {
  display: grid;
  grid-template-columns: 80px 1fr 1.3fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: background 0.3s, padding 0.3s;
}
.layer:hover { background: var(--paper-2); padding-inline: 16px; }
.layer .l-no { font-family: var(--f-mono); color: var(--aqua); font-size: 0.85rem; padding-top: 6px; }
.layer h3 { margin: 0; }
.layer p { margin: 0; color: var(--ink-2); }
@media (max-width: 760px) { .layer { grid-template-columns: 48px 1fr; } .layer p { grid-column: 2; } }

/* ---------- Nature × AI ---------- */
.duo { display: grid; grid-template-columns: 1fr auto 1fr; gap: 0; align-items: stretch; }
.duo-col { padding: clamp(24px, 4vw, 48px); border-radius: var(--r); }
.duo-col.nature { background: #e4ead7; }
.duo-col.ai { background: var(--ink); color: var(--paper); }
.duo-col.ai p, .duo-col.ai li { color: #b9cfd0; }
.duo-col ul { padding: 0; margin: 20px 0 0; list-style: none; }
.duo-col li { padding: 10px 0; border-top: 1px solid rgba(11,42,51,.12); font-size: 0.95rem; }
.duo-col.ai li { border-top-color: rgba(255,255,255,.12); }
.duo-col li b { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; display: block; color: var(--leaf); font-weight: 500; }
.duo-col.ai li b { color: var(--aqua-2); }
.duo-x {
  display: grid;
  place-items: center;
  font-family: var(--f-display);
  font-size: 3rem;
  font-style: italic;
  padding: 0 clamp(12px, 2vw, 28px);
  color: var(--aqua);
}
@media (max-width: 860px) { .duo { grid-template-columns: 1fr; } .duo-x { padding: 12px 0; font-size: 2.2rem; } }

/* ---------- SDG ---------- */
.sdg-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 900px) { .sdg-grid { grid-template-columns: 1fr 1fr; } }
.sdg {
  border-radius: 14px;
  padding: 20px;
  color: #fff;
  min-height: 210px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.sdg .sdg-no { font-family: var(--f-display); font-size: 3.2rem; line-height: 1; }
.sdg h3 { font-family: var(--f-body); font-weight: 700; font-size: 0.92rem; text-transform: uppercase; letter-spacing: 0.02em; margin: 6px 0 auto; line-height: 1.25; }
.sdg p { font-size: 0.85rem; color: rgba(255, 255, 255, 0.92); margin: 14px 0 0; line-height: 1.45; }
.sdg.primary { grid-column: span 2; grid-row: span 2; min-height: 432px; }
.sdg.primary .sdg-no { font-size: 6rem; }
.sdg.primary h3 { font-size: 1.3rem; }
.sdg.primary p { font-size: 1rem; }
@media (max-width: 520px) { .sdg.primary { min-height: 320px; } .sdg { min-height: 190px; } }

/* ---------- Impact / Deployments ---------- */
.impact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--deep-line); border: 1px solid var(--deep-line); border-radius: var(--r); overflow: hidden; }
@media (max-width: 800px) { .impact-grid { grid-template-columns: 1fr; } }
.impact-cell { background: var(--deep); padding: 32px; }
.impact-cell .big { font-family: var(--f-display); font-size: clamp(2.6rem, 5vw, 3.8rem); line-height: 1; color: var(--on-deep); }
.impact-cell .big sup { font-size: 0.4em; color: var(--aqua-2); vertical-align: top; }
.impact-cell h3 { font-family: var(--f-body); font-weight: 600; font-size: 1rem; letter-spacing: 0; margin: 14px 0 6px; color: var(--on-deep); }
.impact-cell p { font-size: 0.9rem; margin: 0; }

.sites { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 72px; align-items: center; }
@media (max-width: 860px) { .sites { grid-template-columns: 1fr; } }
.site-list { list-style: none; padding: 0; margin: 0; }
.site-list li { display: flex; justify-content: space-between; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--deep-line); }
.site-list li span:last-child { font-family: var(--f-mono); font-size: 0.75rem; color: var(--on-deep-2); text-align: right; }
.map-svg circle.node { fill: var(--aqua-2); }

.awards { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 56px; }
.award {
  flex: 1 1 260px;
  border: 1px solid var(--deep-line);
  border-radius: 14px;
  padding: 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.award .yr { font-family: var(--f-mono); font-size: 0.75rem; color: var(--sun); white-space: nowrap; padding-top: 3px; }
.award b { display: block; color: var(--on-deep); font-weight: 600; margin-bottom: 2px; }
.award span { font-size: 0.88rem; color: var(--on-deep-2); }

/* ---------- ATM band ---------- */
.atm-band { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 860px) { .atm-band { grid-template-columns: 1fr; } }
.atm-card {
  border-radius: 22px;
  padding: clamp(28px, 4vw, 44px);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 380px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease;
}
.atm-card:hover { transform: translateY(-4px); }
.atm-card.solar { background: linear-gradient(160deg, #f8d48f, #e9962b); color: #2b1a05; }
.atm-card.grid { background: linear-gradient(160deg, #bfe7e5, #5fd0cf); color: var(--deep); }
.atm-card h3 { font-size: clamp(1.8rem, 3vw, 2.4rem); margin: 0; }
.atm-card p { max-width: 42ch; margin: 0; }
.atm-card .go { margin-top: auto; font-weight: 600; display: inline-flex; gap: 8px; align-items: center; }
.atm-card svg.deco { position: absolute; right: -30px; bottom: -30px; width: 240px; opacity: 0.25; }
.atm-card ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.atm-card li { font-family: var(--f-mono); font-size: 0.7rem; padding: 5px 10px; border-radius: 99px; background: rgba(255, 255, 255, 0.45); }

/* ---------- FAQ ---------- */
.faq { max-width: 880px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 40px 22px 0;
  font-family: var(--f-display);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 18px;
  font-family: var(--f-mono);
  font-size: 1.4rem;
  color: var(--aqua);
  transition: transform 0.25s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-2); padding-bottom: 18px; margin: 0; max-width: 70ch; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 6vw, 80px); }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-list { list-style: none; padding: 0; margin: 32px 0 0; }
.contact-list li { padding: 16px 0; border-top: 1px solid var(--deep-line); display: grid; grid-template-columns: 110px 1fr; gap: 10px; }
.contact-list .k { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--on-deep-2); padding-top: 3px; }
.contact-list a { color: var(--on-deep); text-decoration: none; border-bottom: 1px solid var(--deep-line); }
.contact-list a:hover { border-color: var(--aqua-2); }
form.enquiry { display: grid; gap: 14px; background: var(--deep-2); padding: clamp(22px, 3vw, 36px); border-radius: 22px; border: 1px solid var(--deep-line); }
.field { display: grid; gap: 6px; }
.field label { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--on-deep-2); }
.field input, .field select, .field textarea {
  font: inherit;
  font-size: 0.95rem;
  color: var(--on-deep);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--deep-line);
  border-radius: 10px;
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.field select option { background: var(--deep-2); }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--aqua-2); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 520px) { .field-row { grid-template-columns: 1fr; } }
form.enquiry .btn { justify-self: start; background: var(--aqua-2); color: var(--deep); border-color: var(--aqua-2); cursor: pointer; }
.form-note { font-size: 0.8rem; color: var(--on-deep-2); margin: 0; }
.form-result { display: grid; gap: 10px; border: 1px solid var(--aqua-2); border-radius: 12px; padding: 14px; }
.form-result p { margin: 0; color: var(--on-deep); font-size: 0.9rem; }
.form-result textarea { font: inherit; font-size: 0.82rem; color: var(--on-deep); background: rgba(255, 255, 255, 0.04); border: 1px solid var(--deep-line); border-radius: 8px; padding: 10px; width: 100%; }
.form-result button { justify-self: start; font: inherit; font-size: 0.85rem; font-weight: 600; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--aqua-2); background: transparent; color: var(--aqua-2); cursor: pointer; }

/* ---------- Footer ---------- */
.site-footer { background: var(--deep); color: var(--on-deep-2); padding: 64px 0 32px; border-top: 1px solid var(--deep-line); font-size: 0.9rem; }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; }
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.site-footer h4 { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--aqua-2); font-weight: 500; margin-bottom: 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-footer a { color: var(--on-deep-2); text-decoration: none; }
.site-footer a:hover { color: var(--on-deep); }
.site-footer .brand { color: var(--on-deep); margin-bottom: 14px; }
.site-footer .brand small { color: var(--on-deep-2); }
.foot-big {
  font-family: var(--f-display);
  font-size: clamp(3rem, 12vw, 10rem);
  line-height: 0.9;
  color: var(--on-deep);
  opacity: 0.08;
  letter-spacing: -0.04em;
  margin: 56px 0 24px;
  white-space: nowrap;
  overflow: hidden;
}
.foot-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; border-top: 1px solid var(--deep-line); padding-top: 24px; font-family: var(--f-mono); font-size: 0.72rem; }

/* ---------- Landing (SEO) pages ---------- */
.crumbs { font-family: var(--f-mono); font-size: 0.74rem; color: var(--ink-3); padding-top: 28px; }
.crumbs a { color: var(--ink-3); text-decoration: none; }
.crumbs a:hover { color: var(--ink); }
.crumbs span { margin: 0 8px; }
.prose { max-width: 760px; }
.prose h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-top: 1.6em; }
.prose h3 { margin-top: 1.4em; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: 0.4em; }
.spec-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 0.95rem; }
.spec-table th, .spec-table td { text-align: left; padding: 14px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table th { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; width: 36%; }
.how-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 32px 0; }
@media (max-width: 860px) { .how-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .how-grid { grid-template-columns: 1fr; } }
.how { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.how .n { font-family: var(--f-mono); color: var(--aqua); font-size: 0.78rem; }
.how h3 { font-size: 1.15rem; margin: 8px 0 6px; }
.how p { font-size: 0.9rem; color: var(--ink-2); margin: 0; }
.use-cases { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0; }
.cta-strip { background: var(--ink); color: var(--paper); border-radius: 22px; padding: clamp(28px, 5vw, 56px); display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta-strip h2 { margin: 0; font-size: clamp(1.6rem, 3.4vw, 2.6rem); }
.cta-strip .btn-solid { background: var(--aqua-2); color: var(--deep); border-color: var(--aqua-2); }

/* ---------- Reveal ---------- */
/* Content is visible at rest; scrolling into view only adds a gentle lift. */
.reveal.in { animation: rise 0.9s cubic-bezier(.2,.8,.2,1); }
@keyframes rise { from { transform: translateY(14px); } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--aqua); outline-offset: 3px; }

/* ---------- Water quality & E. coli ---------- */
.q-panel { background: var(--ink); color: var(--paper); border-radius: 22px; padding: clamp(18px, 3vw, 28px); min-width: 0; }
.q-head { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-family: var(--f-mono); font-size: 0.7rem; margin-bottom: 16px; }
.q-time { color: #9fbfc0; }
.q-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(255, 255, 255, 0.1); border-radius: 14px; overflow: hidden; }
.q-cell { background: var(--ink); padding: 14px 16px; display: grid; gap: 2px; }
.q-k { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; color: #9fbfc0; }
.q-v { font-family: var(--f-display); font-size: 1.6rem; line-height: 1.15; font-variant-numeric: tabular-nums; }
.q-v small { font-family: var(--f-mono); font-size: 0.64rem; color: #9fbfc0; margin-left: 4px; }
.q-ok { font-family: var(--f-mono); font-size: 0.66rem; color: var(--aqua-2); display: inline-flex; align-items: center; gap: 6px; }
.q-ok::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--aqua-2); }
.q-cell:first-child { background: #0f3d47; }
.q-cell:first-child .q-v { color: var(--aqua-2); }
.q-foot { font-size: 0.66rem; color: #9fbfc0; margin: 12px 0 0; }

.q-sub { margin: clamp(56px, 7vw, 88px) 0 24px; font-size: clamp(1.5rem, 2.6vw, 2rem); }
.ecoli-flow { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: none; }
@media (max-width: 900px) { .ecoli-flow { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .ecoli-flow { grid-template-columns: 1fr; } }
.ecoli-flow li { border-top: 2px solid var(--ink); padding-top: 16px; position: relative; }
.ecoli-flow li:nth-child(3) { border-top-color: var(--alert); }
.ecoli-flow li:nth-child(4) { border-top-color: var(--leaf); }
.ef-no { font-family: var(--f-mono); font-size: 0.75rem; color: var(--ink-3); }
.ecoli-flow h4 { font-family: var(--f-body); font-weight: 600; font-size: 1.05rem; letter-spacing: 0; margin: 6px 0 6px; }
.ecoli-flow p { font-size: 0.92rem; color: var(--ink-2); margin: 0; }

.barriers { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
@media (max-width: 900px) { .barriers { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .barriers { grid-template-columns: 1fr; } }
.barrier { padding: 22px; display: grid; gap: 6px; align-content: start; border-right: 1px solid var(--line); background: #fff; position: relative; }
.barrier:last-child { border-right: 0; background: var(--ink); color: var(--paper); }
.barrier:last-child span { color: #b9cfd0; }
.barrier b { font-family: var(--f-display); font-weight: 400; font-size: 1.3rem; }
.barrier span { font-size: 0.9rem; color: var(--ink-2); }
.barrier::after { content: "→"; position: absolute; right: -9px; top: 22px; z-index: 1; font-family: var(--f-mono); color: var(--aqua); background: var(--paper); border-radius: 50%; width: 18px; text-align: center; line-height: 18px; font-size: 0.8rem; }
.barrier:last-child::after { display: none; }
@media (max-width: 900px) {
  .barrier { border-bottom: 1px solid var(--line); }
  .barrier::after { display: none; }
}

/* ==========================================================
   Photo edition
   ========================================================== */
.ph { margin: 0; display: grid; gap: 8px; min-width: 0; }
.ph img { width: 100%; height: 100%; object-fit: cover; border-radius: 14px; background: var(--paper-2); }
.ph figcaption { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); }
.on-deep .ph figcaption { color: var(--on-deep-2); }

.hero-photo { margin: 0; position: absolute; inset: 4% 6%; }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; border-radius: 46% 46% 44% 44% / 38% 38% 52% 52%; box-shadow: 0 30px 60px -30px rgba(11, 42, 51, 0.5); }
.hero-photo figcaption { position: absolute; left: 50%; bottom: -6px; transform: translateX(-50%); white-space: nowrap; font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; background: var(--ink); color: var(--paper); padding: 6px 12px; border-radius: 999px; }
.hero-visual .readout { z-index: 2; }

.field-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 220px; gap: 14px; }
.field-grid .ph { grid-template-rows: minmax(0, 1fr) auto; }
.field-grid .tall { grid-row: span 2; }
.field-grid .wide { grid-column: span 2; }
@media (max-width: 900px) { .field-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 200px; } }
@media (max-width: 520px) { .field-grid { grid-template-columns: 1fr; grid-auto-rows: 240px; } .field-grid .tall { grid-row: span 1; } .field-grid .wide { grid-column: span 1; } }

.diagram { margin-top: 40px; }
.diagram img { background: #fff; object-fit: contain; padding: clamp(8px, 2vw, 20px); max-height: 560px; }

.duo-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 12px; margin-bottom: 20px; max-width: 100%; }

.mosaic { display: grid; grid-template-columns: 1fr 1fr; grid-auto-rows: 180px; gap: 10px; }
.mosaic .ph { grid-template-rows: minmax(0, 1fr) auto; }
@media (max-width: 520px) { .mosaic { grid-auto-rows: 140px; } }

.award-photos { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 72px; }
.award-photos .ph img { aspect-ratio: 3 / 2; height: auto; }
@media (max-width: 640px) { .award-photos { grid-template-columns: 1fr; } }
.award-photos + .awards { margin-top: 24px; }

.atm-photo { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; max-width: 100%; }
.atm-card { min-height: 0; }

.photo-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 28px 0 8px; }
.photo-row .ph img { aspect-ratio: 4 / 3; height: auto; }
@media (max-width: 640px) { .photo-row { grid-template-columns: 1fr; } }

/* ---------- Original Arosia Water logo ---------- */
.brand-logo { height: 54px; width: auto; display: block; }
@media (max-width: 520px) { .brand-logo { height: 46px; } }
.brand-foot { display: inline-flex; background: var(--paper); padding: 12px 18px; border-radius: 14px; margin-bottom: 18px; }
.brand-foot img { height: 72px; width: auto; display: block; }