/* =========================================================================
   Vidal Solution — SafeAir
   Design system + components + animation
   Palette: deep blue → teal → cyan, soft grey, white space
   ========================================================================= */

:root {
  /* Brand colour ramp (pulled from the Vidal / SafeAir logos) */
  --c-ink:        #0a2540;   /* deep navy ink */
  --c-blue:       #0a3d62;   /* deep blue */
  --c-blue-600:   #1b6fb3;
  --c-blue-500:   #2e9fd6;
  --c-teal:       #2bb6c6;
  --c-cyan:       #4cc4d6;
  --c-cyan-300:   #7fdbe6;
  --c-mint:       #58c9a3;   /* soft green accent */
  --c-aqua-bg:    #eef9fb;

  --c-text:       #16384f;
  --c-muted:      #5b7287;
  --c-faint:      #8499a8;
  --c-line:       #e3edf2;
  --c-bg:         #ffffff;
  --c-bg-soft:    #f5fafc;
  --c-bg-deep:    #07273f;   /* dark sections */

  --grad-brand:   linear-gradient(120deg, #1b6fb3 0%, #2e9fd6 40%, #2bb6c6 75%, #4cc4d6 100%);
  --grad-cool:    linear-gradient(135deg, #0a3d62 0%, #15557f 45%, #1f7fb0 100%);
  --grad-deep:    linear-gradient(160deg, #07273f 0%, #0c3a5c 55%, #11567f 100%);
  --grad-text:    linear-gradient(100deg, #1b6fb3 0%, #2bb6c6 60%, #4cc4d6 100%);

  --shadow-sm:    0 2px 10px rgba(10, 61, 98, .06);
  --shadow-md:    0 12px 32px rgba(10, 61, 98, .10);
  --shadow-lg:    0 26px 60px rgba(10, 61, 98, .16);
  --shadow-glow:  0 18px 50px rgba(43, 182, 198, .28);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 999px;

  --container: 1200px;
  --gutter: clamp(20px, 5vw, 48px);

  --ff-head: 'Sora', system-ui, -apple-system, sans-serif;
  --ff-body: 'Inter', system-ui, -apple-system, sans-serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
}

/* ------------------------------- Reset -------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff-body);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4 { font-family: var(--ff-head); line-height: 1.12; color: var(--c-ink); font-weight: 700; letter-spacing: -.02em; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--c-blue); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ----------------------------- Buttons -------------------------------- */
.btn {
  --pad-y: 14px; --pad-x: 26px;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--ff-head); font-weight: 600; font-size: 15.5px; letter-spacing: -.01em;
  padding: var(--pad-y) var(--pad-x); border-radius: var(--r-pill);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s;
  white-space: nowrap; position: relative; overflow: hidden;
}
.btn--sm { --pad-y: 10px; --pad-x: 20px; font-size: 14.5px; }
.btn--lg { --pad-y: 17px; --pad-x: 34px; font-size: 16.5px; }
.btn--block { width: 100%; }

.btn--primary { background: var(--grad-brand); color: #fff; box-shadow: var(--shadow-glow); background-size: 160% 100%; }
.btn--primary:hover { transform: translateY(-2px); background-position: 100% 0; box-shadow: 0 22px 56px rgba(43,182,198,.4); }

.btn--ghost { background: #fff; color: var(--c-blue); box-shadow: inset 0 0 0 1.6px var(--c-line); }
.btn--ghost:hover { transform: translateY(-2px); box-shadow: inset 0 0 0 1.6px var(--c-cyan), var(--shadow-md); color: var(--c-blue-600); }

.btn--ghost-light { background: rgba(255,255,255,.10); color: #fff; box-shadow: inset 0 0 0 1.6px rgba(255,255,255,.5); backdrop-filter: blur(4px); }
.btn--ghost-light:hover { background: #fff; color: var(--c-blue); transform: translateY(-2px); }

.btn .arr { transition: transform .25s var(--ease); }
.btn:hover .arr { transform: translateX(3px); }

/* --------------------------- Announcement ----------------------------- */
.announce {
  background: var(--grad-deep); color: #dff3f7; font-size: 14px;
  position: relative; z-index: 60;
}
.announce__inner { display: flex; align-items: center; gap: 14px; padding: 9px 0; flex-wrap: wrap; justify-content: center; }
.announce__inner p { margin: 0; opacity: .92; }
.announce__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-cyan-300); box-shadow: 0 0 0 0 rgba(127,219,230,.7); animation: pulse 2.2s infinite; flex: none; }
.announce__link { color: #fff; font-weight: 600; white-space: nowrap; }
.announce__link:hover { color: var(--c-cyan-300); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(127,219,230,.6);} 70% { box-shadow: 0 0 0 8px rgba(127,219,230,0);} 100% { box-shadow: 0 0 0 0 rgba(127,219,230,0);} }

/* ------------------------------ Header -------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s, background .3s;
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); border-color: var(--c-line); background: rgba(255,255,255,.94); }
.site-header__inner { display: flex; align-items: center; gap: 18px; height: 76px; }
.brand { flex: none; }
.brand__logo { height: 40px; width: auto; }
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 2px; }
.main-nav a {
  display: block; padding: 9px 12px; border-radius: var(--r-pill);
  font-size: 14.5px; font-weight: 500; color: var(--c-text); white-space: nowrap;
  position: relative; transition: color .2s, background .2s;
}
.main-nav a::after {
  content: ''; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 2px;
  background: var(--grad-brand); border-radius: 2px; transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.header-cta { flex: none; }
.main-nav a:hover { color: var(--c-blue-600); }
.main-nav a:hover::after, .main-nav a.is-active::after { transform: scaleX(1); }
.main-nav a.is-active { color: var(--c-blue-600); font-weight: 600; }
.header-cta { display: flex; }

.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
.nav-toggle span { width: 22px; height: 2px; background: var(--c-blue); border-radius: 2px; transition: transform .3s, opacity .3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav { padding: 12px var(--gutter) 24px; border-top: 1px solid var(--c-line); background: #fff; }
.mobile-nav ul { display: flex; flex-direction: column; gap: 2px; margin-bottom: 16px; }
.mobile-nav a { display: block; padding: 13px 12px; border-radius: 12px; font-weight: 500; font-size: 16px; }
.mobile-nav a.is-active, .mobile-nav a:hover { background: var(--c-aqua-bg); color: var(--c-blue-600); }

/* ------------------------- Section scaffolding ------------------------ */
section { position: relative; }
.section { padding: clamp(64px, 9vw, 120px) 0; }
.section--soft { background: var(--c-bg-soft); }
.section--aqua { background: linear-gradient(180deg, #fff 0%, var(--c-aqua-bg) 100%); }
.section--deep { background: var(--grad-deep); color: #d9ebf2; }
.section--deep h1, .section--deep h2, .section--deep h3 { color: #fff; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--ff-head); font-weight: 600; font-size: 13px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--c-teal); margin-bottom: 18px;
}
.eyebrow::before { content: ''; width: 22px; height: 2px; background: var(--grad-brand); border-radius: 2px; }
.section--deep .eyebrow { color: var(--c-cyan-300); }

.section-head { max-width: 760px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 16px; }
.section-head p { font-size: clamp(16.5px, 2vw, 19px); color: var(--c-muted); }
.section--deep .section-head p { color: #aacbe0; }

.lead { font-size: clamp(17px, 2.2vw, 20px); color: var(--c-muted); }
.support-line { font-family: var(--ff-head); font-weight: 500; font-size: clamp(17px, 2.4vw, 22px);
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-top: 40px; text-align: center; max-width: 820px; margin-inline: auto; }

/* ------------------------------- HERO --------------------------------- */
.hero { position: relative; overflow: hidden; background: var(--grad-deep); color: #eaf6fb; padding: clamp(72px, 10vw, 130px) 0 clamp(80px, 9vw, 120px); }
.hero__glow { position: absolute; inset: 0; background:
    radial-gradient(60% 60% at 80% 10%, rgba(76,196,214,.28), transparent 60%),
    radial-gradient(50% 50% at 10% 90%, rgba(43,182,198,.22), transparent 60%);
  z-index: 0; }
.hero .container { position: relative; z-index: 2; }
.hero__grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero__pill { display: inline-flex; align-items: center; gap: 10px; padding: 8px 16px 8px 10px; border-radius: var(--r-pill);
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); font-size: 13.5px; color: #cfeaf3; margin-bottom: 26px; backdrop-filter: blur(6px); }
.hero__pill img { height: 18px; }
.hero h1 { font-size: clamp(34px, 5.4vw, 60px); color: #fff; font-weight: 800; line-height: 1.05; letter-spacing: -.03em; }
.hero h1 .grad { background: linear-gradient(100deg, #7fdbe6, #4cc4d6 50%, #2bb6c6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__sub { font-size: clamp(16px, 2.1vw, 19px); color: #bcd9e9; margin-top: 24px; max-width: 600px; }
.hero__support { margin-top: 16px; font-size: 15px; color: #93b7cd; max-width: 560px; }
.hero__cta { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.hero__trust { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: center; }
.hero__trust span { font-size: 13.5px; color: #9fc3d8; font-weight: 500; position: relative; }
.hero__trust span:not(:last-child)::after { content: '·'; margin-left: 22px; color: #4d7693; }

/* Hero visual: layered glass dashboard + airflow */
.hero__visual { position: relative; min-height: 380px; }
.hero-card {
  position: absolute; border-radius: var(--r-lg); background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.16); backdrop-filter: blur(10px); box-shadow: 0 24px 60px rgba(0,0,0,.3);
  padding: 18px 20px; color: #eaf6fb;
}
.hero-card__top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.hero-card__top .icon { width: 20px; height: 20px; color: var(--c-cyan-300); }
.hero-card__label { font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; color: #9fc3d8; }
.hero-card__val { font-family: var(--ff-head); font-weight: 700; font-size: 30px; color: #fff; }
.hero-card__val small { font-size: 14px; color: #9fc3d8; font-weight: 500; }
.hero-card--main { top: 0; left: 0; width: 64%; z-index: 3; animation: float 7s ease-in-out infinite; }
.hero-card--risk { top: 40%; right: 0; width: 54%; z-index: 4; animation: float 8s ease-in-out infinite .8s; }
.hero-card--badge { bottom: 0; left: 8%; z-index: 5; display: flex; align-items: center; gap: 12px; padding: 14px 18px; animation: float 6.5s ease-in-out infinite .4s; }
.hero-card--badge .icon { width: 26px; height: 26px; color: var(--c-mint); }
.hero-bar { height: 7px; border-radius: 4px; background: rgba(255,255,255,.12); overflow: hidden; margin-top: 6px; }
.hero-bar i { display: block; height: 100%; border-radius: 4px; background: var(--grad-brand); animation: grow 2.4s var(--ease) forwards; }
.hero-spark { display: flex; align-items: flex-end; gap: 4px; height: 46px; margin-top: 8px; }
.hero-spark i { flex: 1; background: linear-gradient(180deg, #4cc4d6, #1b6fb3); border-radius: 3px; opacity: .85; animation: bar 1.6s var(--ease) backwards; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes grow { from { width: 0; } to { width: var(--w, 72%); } }
@keyframes bar { from { transform: scaleY(.1); opacity: 0; } to { transform: scaleY(1); opacity: .85; } }

/* ----------------------------- Airflow SVG ---------------------------- */
.airflow { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; }
.airflow__lines path { fill: none; stroke: url(#flowGrad); stroke-width: 2; stroke-linecap: round;
  stroke-dasharray: 14 10; animation: flow 9s linear infinite; opacity: .55; }
.airflow__lines path:nth-child(2) { animation-duration: 11s; opacity: .4; }
.airflow__lines path:nth-child(3) { animation-duration: 13s; opacity: .5; }
.airflow__lines path:nth-child(4) { animation-duration: 10s; opacity: .35; }
.airflow__lines path:nth-child(5) { animation-duration: 12s; opacity: .45; }
.airflow--hero { opacity: .9; }
.airflow--band { opacity: .35; }
@keyframes flow { to { stroke-dashoffset: -240; } }

/* ----------------------------- Reveal anim ---------------------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); will-change: opacity, transform; }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }
.reveal[data-d="5"] { transition-delay: .40s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .airflow__lines path, .hero-card, .announce__dot { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ----------------------------- Card grids ----------------------------- */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }

.card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg);
  padding: 30px 28px; box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: #d2e7ef; }
.card__icon {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 20px;
  background: linear-gradient(135deg, var(--c-aqua-bg), #dff3f7); color: var(--c-teal);
  transition: transform .35s var(--ease-spring), background .35s, color .35s;
}
.card__icon .icon { width: 26px; height: 26px; }
.card:hover .card__icon { transform: scale(1.06) rotate(-3deg); background: var(--grad-brand); color: #fff; }
.card h3 { font-size: 19.5px; margin-bottom: 10px; }
.card p { color: var(--c-muted); font-size: 15.5px; }
.card__top-accent { position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--grad-brand); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease); }
.card:hover .card__top-accent { transform: scaleX(1); }

/* compact icon chip cards (Why this matters) */
.chip-cards { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.chip-card {
  flex: 1 1 180px; max-width: 220px; text-align: center; background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--r-md); padding: 26px 18px; box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s;
}
.chip-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.chip-card .chip-ic { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--c-aqua-bg), #dff3f7); color: var(--c-teal); transition: transform .3s var(--ease-spring); }
.chip-card:hover .chip-ic { transform: scale(1.1); }
.chip-card .chip-ic .icon { width: 26px; height: 26px; }
.chip-card span { font-family: var(--ff-head); font-weight: 600; font-size: 15px; color: var(--c-ink); }

/* ------------------------- Four-layer framework ----------------------- */
.layers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.layer {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg); padding: 30px 26px;
  position: relative; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s;
  overflow: hidden;
}
.layer::before { content: ''; position: absolute; inset: 0; background: var(--grad-cool); opacity: 0; transition: opacity .4s; z-index: 0; }
.layer > * { position: relative; z-index: 1; }
.layer:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.layer:hover::before { opacity: 1; }
.layer:hover h3, .layer:hover p, .layer:hover .layer__num { color: #fff; }
.layer:hover .layer__ic { background: rgba(255,255,255,.18); color: #fff; }
.layer__num { font-family: var(--ff-head); font-weight: 800; font-size: 14px; color: var(--c-faint); letter-spacing: .1em; transition: color .3s; }
.layer__ic { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; margin: 16px 0 20px;
  background: linear-gradient(135deg, var(--c-aqua-bg), #dff3f7); color: var(--c-teal); transition: background .35s, color .35s, transform .35s var(--ease-spring); }
.layer:hover .layer__ic { transform: scale(1.05); }
.layer__ic .icon { width: 28px; height: 28px; }
.layer h3 { font-size: 21px; margin-bottom: 10px; transition: color .3s; }
.layer p { color: var(--c-muted); font-size: 15px; transition: color .3s; }
.layer__arrow { position: absolute; top: 50%; right: -14px; z-index: 3; color: var(--c-cyan); width: 26px; height: 26px; }
.layers .layer:last-child .layer__arrow { display: none; }

/* --------------------- Intelligent insight cards ---------------------- */
.insight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.insight {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-md); padding: 24px 22px;
  box-shadow: var(--shadow-sm); cursor: pointer; transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
  position: relative;
}
.insight:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: #cfe6ef; }
.insight__head { display: flex; align-items: flex-start; gap: 14px; }
.insight__ic { width: 46px; height: 46px; flex: none; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--c-aqua-bg), #dff3f7); color: var(--c-teal); transition: transform .3s var(--ease-spring), background .3s, color .3s; }
.insight:hover .insight__ic { background: var(--grad-brand); color: #fff; transform: rotate(-4deg) scale(1.05); }
.insight__ic .icon { width: 24px; height: 24px; }
.insight h3 { font-size: 16.5px; line-height: 1.25; }
.insight__num { font-family: var(--ff-head); font-size: 12px; font-weight: 700; color: var(--c-faint); margin-left: auto; }
.insight__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .4s var(--ease); margin-top: 0; }
.insight.is-open .insight__body { grid-template-rows: 1fr; margin-top: 14px; }
.insight__body > div { overflow: hidden; }
.insight__body p { color: var(--c-muted); font-size: 14.5px; }
.insight__sectors { display: inline-block; margin-top: 10px; font-size: 12px; font-weight: 600; color: var(--c-teal);
  background: var(--c-aqua-bg); padding: 4px 10px; border-radius: var(--r-pill); }
.insight__toggle { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--c-blue-500); display: inline-flex; align-items: center; gap: 6px; }
.insight__toggle .pm { width: 16px; height: 16px; transition: transform .3s; }
.insight.is-open .insight__toggle .pm { transform: rotate(45deg); }

/* ----------------------------- Protect cards -------------------------- */
.protect-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.protect-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg); padding: 34px 32px;
  box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s; position: relative; overflow: hidden;
}
.protect-card::after { content: ''; position: absolute; top: -60px; right: -60px; width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(76,196,214,.16), transparent 70%); }
.protect-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.protect-card__tag { display: inline-block; font-family: var(--ff-head); font-weight: 700; font-size: 13px; letter-spacing: .08em;
  color: #fff; background: var(--grad-brand); padding: 6px 14px; border-radius: var(--r-pill); margin-bottom: 18px; }
.protect-card h3 { font-size: 23px; margin-bottom: 12px; }
.protect-card > p { color: var(--c-muted); margin-bottom: 20px; }
.benefits { display: grid; gap: 10px; }
.benefits li { display: flex; gap: 11px; align-items: flex-start; font-size: 15px; color: var(--c-text); }
.benefits .tick { flex: none; width: 22px; height: 22px; border-radius: 50%; background: linear-gradient(135deg, var(--c-teal), var(--c-cyan)); color: #fff; display: grid; place-items: center; margin-top: 1px; }
.benefits .tick svg { width: 13px; height: 13px; }

/* ---------------------------- Industry cards -------------------------- */
.industry { display: grid; grid-template-columns: 1.1fr 1fr; gap: 0; border: 1px solid var(--c-line); border-radius: var(--r-lg);
  overflow: hidden; box-shadow: var(--shadow-sm); background: #fff; margin-bottom: 22px; transition: box-shadow .35s; }
.industry:hover { box-shadow: var(--shadow-md); }
.industry:nth-child(even) .industry__visual { order: 2; }
.industry__body { padding: clamp(28px, 4vw, 46px); }
.industry__body .eyebrow { margin-bottom: 12px; }
.industry__body h3 { font-size: clamp(22px, 3vw, 30px); margin-bottom: 14px; }
.industry__body > p { color: var(--c-muted); margin-bottom: 20px; }
.industry__visual { background: var(--grad-cool); position: relative; min-height: 240px; overflow: hidden; display: grid; place-items: center; }
.industry__visual .icon { width: 84px; height: 84px; color: rgba(255,255,255,.9); position: relative; z-index: 2; }
.industry__visual .airflow { opacity: .5; }
.point-list { display: grid; gap: 11px; }
.point-list li { display: flex; gap: 11px; align-items: flex-start; font-size: 15px; }
.point-list .dot { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--grad-brand); margin-top: 9px; }

/* ---------------------------- Project cards --------------------------- */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.project {
  border: 1px solid var(--c-line); border-radius: var(--r-lg); overflow: hidden; background: #fff;
  box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s; display: flex; flex-direction: column;
}
.project:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.project__media { height: 168px; background: var(--grad-cool); position: relative; overflow: hidden; display: grid; place-items: center; }
.project__media .icon { width: 64px; height: 64px; color: rgba(255,255,255,.92); position: relative; z-index: 2; transition: transform .5s var(--ease); }
.project:hover .project__media .icon { transform: scale(1.12); }
.project__media .airflow { opacity: .55; }
.project__tag { position: absolute; top: 14px; left: 14px; z-index: 3; font-size: 12px; font-weight: 600; color: var(--c-blue);
  background: rgba(255,255,255,.92); padding: 5px 12px; border-radius: var(--r-pill); backdrop-filter: blur(4px); }
.project__body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.project__body h3 { font-size: 19px; margin-bottom: 10px; }
.project__body p { color: var(--c-muted); font-size: 15px; flex: 1; }
.project__points { margin-top: 16px; display: grid; gap: 8px; }
.project__points li { font-size: 13.5px; color: var(--c-text); display: flex; gap: 8px; }
.project__points .dot { flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--c-teal); margin-top: 7px; }

/* ----------------------------- Partner cards -------------------------- */
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.partner {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg); padding: 32px 30px; box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s; text-align: center;
}
.partner:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.partner__logo { height: 56px; display: grid; place-items: center; margin-bottom: 22px; }
.partner__logo img { max-height: 52px; width: auto; object-fit: contain; filter: saturate(1); transition: transform .35s var(--ease); }
.partner:hover .partner__logo img { transform: scale(1.05); }
.partner h3 { font-size: 19px; margin-bottom: 10px; }
.partner p { color: var(--c-muted); font-size: 15px; }

.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.category-pill { display: flex; align-items: center; gap: 12px; padding: 16px 20px; background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--r-md); font-weight: 500; font-size: 15px; box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s; }
.category-pill:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.category-pill .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--grad-brand); flex: none; }

/* ----------------------------- Standards strip ------------------------ */
.standards { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: clamp(28px, 6vw, 64px); }
.standards img { height: 46px; width: auto; object-fit: contain; opacity: .62; filter: grayscale(.3); transition: opacity .3s, filter .3s, transform .3s; }
.standards img:hover { opacity: 1; filter: none; transform: scale(1.06); }
.standards--leed img, .standards img[alt="LEED"] { height: 58px; }

/* ----------------------------- Evidence cards ------------------------- */
.evidence-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.evidence-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: var(--r-lg);
  padding: 30px 28px; transition: transform .35s var(--ease), background .35s, border-color .35s; backdrop-filter: blur(4px); }
.evidence-card:hover { transform: translateY(-5px); background: rgba(255,255,255,.1); border-color: rgba(127,219,230,.4); }
.evidence-card__src { font-size: 12.5px; font-weight: 600; letter-spacing: .04em; color: var(--c-cyan-300); text-transform: uppercase; margin-bottom: 12px; display: block; }
.evidence-card h3 { font-size: 19px; color: #fff; margin-bottom: 12px; }
.evidence-card p { color: #b7d4e5; font-size: 14.5px; }

/* ------------------------------- Stats -------------------------------- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; }
.stat__num { font-family: var(--ff-head); font-weight: 800; font-size: clamp(34px, 5vw, 52px);
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; letter-spacing: -.03em; }
.section--deep .stat__num { background: linear-gradient(100deg, #7fdbe6, #4cc4d6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat__label { margin-top: 10px; font-size: 14.5px; color: var(--c-muted); font-weight: 500; }
.section--deep .stat__label { color: #aacbe0; }

/* --------------------------- Video / storyboard ----------------------- */
.video-block { display: grid; grid-template-columns: 1.1fr .9fr; gap: 46px; align-items: center; }
.video-frame { position: relative; border-radius: var(--r-xl); overflow: hidden; aspect-ratio: 16/10; background: var(--grad-deep); box-shadow: var(--shadow-lg); }
.video-frame .airflow { opacity: .6; }
.video-frame__play { position: absolute; inset: 0; display: grid; place-items: center; z-index: 3; }
.play-btn { width: 84px; height: 84px; border-radius: 50%; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.4);
  display: grid; place-items: center; backdrop-filter: blur(6px); transition: transform .3s var(--ease-spring), background .3s; }
.play-btn::before { content: ''; position: absolute; inset: -10px; border-radius: 50%; border: 2px solid rgba(127,219,230,.5); animation: ring 2.4s ease-out infinite; }
.play-btn:hover { transform: scale(1.08); background: rgba(255,255,255,.26); }
.play-btn svg { width: 30px; height: 30px; color: #fff; margin-left: 4px; }
@keyframes ring { 0% { transform: scale(1); opacity: .8; } 100% { transform: scale(1.5); opacity: 0; } }
.video-frame__caption { position: absolute; bottom: 18px; left: 20px; right: 20px; z-index: 3; color: #cfeaf3; font-size: 13.5px; }
.storyboard { display: grid; gap: 4px; max-height: 420px; overflow-y: auto; padding-right: 8px; }
.storyboard__item { padding: 12px 14px; border-left: 2px solid var(--c-line); transition: border-color .3s, background .3s; }
.storyboard__item:hover { border-color: var(--c-cyan); background: var(--c-bg-soft); }
.storyboard__item h4 { font-size: 14.5px; display: flex; justify-content: space-between; gap: 10px; }
.storyboard__item h4 span { color: var(--c-faint); font-weight: 600; font-size: 12.5px; }
.storyboard__item p { font-size: 13.5px; color: var(--c-muted); margin-top: 4px; }

/* ------------------------------- FAQ ---------------------------------- */
.faq { max-width: 820px; margin-inline: auto; display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--c-line); border-radius: var(--r-md); background: #fff; overflow: hidden; transition: box-shadow .3s, border-color .3s; }
.faq-item.is-open { box-shadow: var(--shadow-md); border-color: #cfe6ef; }
.faq-q { width: 100%; text-align: left; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  font-family: var(--ff-head); font-weight: 600; font-size: 17px; color: var(--c-ink); }
.faq-q .pm { width: 22px; height: 22px; flex: none; color: var(--c-teal); transition: transform .3s; }
.faq-item.is-open .faq-q .pm { transform: rotate(45deg); }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .35s var(--ease); }
.faq-item.is-open .faq-a { grid-template-rows: 1fr; }
.faq-a > div { overflow: hidden; }
.faq-a p { padding: 0 24px 22px; color: var(--c-muted); font-size: 15.5px; }

/* ----------------------------- CTA band ------------------------------- */
.cta-band { background: var(--grad-deep); color: #fff; padding: clamp(60px, 8vw, 96px) 0; position: relative; overflow: hidden; text-align: center; }
.cta-band__flow { position: absolute; inset: 0; }
.cta-band__inner { position: relative; z-index: 2; max-width: 820px; margin-inline: auto; }
.cta-band h2 { font-size: clamp(24px, 3.6vw, 38px); color: #fff; margin-bottom: 28px; }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ------------------------------ Footer -------------------------------- */
.site-footer { background: var(--c-ink); color: #9fbdd0; padding: clamp(48px, 6vw, 72px) 0 0; }
.site-footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 44px; }
.site-footer__logo { background: #fff; padding: 8px 12px; border-radius: 10px; }
.site-footer__tag { color: #cfe2ee; font-weight: 600; margin-top: 16px; font-family: var(--ff-head); font-size: 15px; }
.site-footer__desc { font-size: 14px; margin-top: 10px; max-width: 320px; color: #82a3ba; }
.site-footer__safeair { margin-top: 18px; background: #fff; display: inline-block; padding: 8px 12px; border-radius: 10px; }
.site-footer__col h3 { font-size: 14px; color: #fff; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 16px; }
.site-footer__col ul { display: grid; gap: 10px; }
.site-footer__col a { font-size: 14.5px; color: #9fbdd0; transition: color .2s, padding-left .2s; }
.site-footer__col a:hover { color: var(--c-cyan-300); padding-left: 4px; }
.site-footer__bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13.5px; color: #6f93ab; }

/* ------------------------------- Forms -------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 48px; align-items: start; }
.contact-info .info-item { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--c-line); }
.contact-info .info-item:last-child { border-bottom: none; }
.contact-info .info-ic { width: 44px; height: 44px; flex: none; border-radius: 12px; display: grid; place-items: center; background: var(--c-aqua-bg); color: var(--c-teal); }
.contact-info .info-ic .icon { width: 22px; height: 22px; }
.contact-info h4 { font-size: 14px; color: var(--c-faint); text-transform: uppercase; letter-spacing: .06em; }
.contact-info p { font-size: 16px; color: var(--c-ink); font-weight: 500; }

.form-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg); padding: clamp(26px, 4vw, 40px); box-shadow: var(--shadow-md); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 600; color: var(--c-ink); }
.field label .req { color: #e0556b; }
.field input, .field select, .field textarea {
  font: inherit; font-size: 15.5px; padding: 13px 15px; border: 1.5px solid var(--c-line); border-radius: var(--r-sm);
  background: var(--c-bg-soft); color: var(--c-text); transition: border-color .25s, box-shadow .25s, background .25s; width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--c-cyan); background: #fff; box-shadow: 0 0 0 4px rgba(76,196,214,.15); }
.field textarea { resize: vertical; min-height: 110px; }
.consent { display: flex; gap: 12px; align-items: flex-start; grid-column: 1 / -1; margin-top: 4px; }
.consent input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--c-teal); flex: none; }
.consent label { font-size: 14px; color: var(--c-muted); font-weight: 400; }
.form-actions { grid-column: 1 / -1; display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.form-note { grid-column: 1 / -1; font-size: 13.5px; color: var(--c-faint); margin-top: 4px; }
.form-alert { grid-column: 1 / -1; padding: 14px 18px; border-radius: var(--r-sm); font-size: 14.5px; font-weight: 500; display: flex; gap: 10px; align-items: center; }
.form-alert--ok { background: #e6f7f0; color: #157a52; border: 1px solid #b6e6d3; }
.form-alert--err { background: #fdeef0; color: #b33148; border: 1px solid #f6cdd4; }

/* --------------------------- Misc / utilities ------------------------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 70px); align-items: center; }
.prose p { color: var(--c-muted); margin-bottom: 16px; font-size: 16.5px; }
.prose p:last-child { margin-bottom: 0; }
.center { text-align: center; }
.mt-l { margin-top: 40px; }
.value-list { display: grid; gap: 14px; max-width: 720px; }
.value-list li { display: flex; gap: 14px; align-items: flex-start; padding: 18px 22px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-md); box-shadow: var(--shadow-sm); font-size: 16px; font-weight: 500; transition: transform .3s, box-shadow .3s; }
.value-list li:hover { transform: translateX(6px); box-shadow: var(--shadow-md); }
.value-list .num { flex: none; width: 34px; height: 34px; border-radius: 10px; background: var(--grad-brand); color: #fff; display: grid; place-items: center; font-family: var(--ff-head); font-weight: 700; font-size: 15px; }

.page-hero { background: var(--grad-deep); color: #eaf6fb; padding: clamp(70px, 9vw, 120px) 0 clamp(56px, 7vw, 96px); position: relative; overflow: hidden; }
.page-hero__glow { position: absolute; inset: 0; background: radial-gradient(55% 55% at 85% 15%, rgba(76,196,214,.25), transparent 60%); z-index: 0; }
.page-hero .container { position: relative; z-index: 2; max-width: 880px; }
.page-hero h1 { font-size: clamp(32px, 5vw, 54px); color: #fff; font-weight: 800; }
.page-hero p { font-size: clamp(16.5px, 2.1vw, 20px); color: #bcd9e9; margin-top: 22px; max-width: 720px; }
.page-hero__cta { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }

.breadcrumb { font-size: 13.5px; color: #93b7cd; margin-bottom: 16px; display: flex; gap: 8px; align-items: center; }
.breadcrumb a:hover { color: #fff; }

.note-strip { background: var(--c-aqua-bg); border-radius: var(--r-md); padding: 22px 26px; display: flex; gap: 14px; align-items: flex-start; }
.note-strip .icon { width: 24px; height: 24px; color: var(--c-teal); flex: none; }
.note-strip p { font-size: 15px; color: var(--c-blue); }

/* Before/After storytelling */
.flow-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; counter-reset: step; }
.flow-step { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-md); padding: 22px 18px; text-align: center; box-shadow: var(--shadow-sm); position: relative; transition: transform .3s, box-shadow .3s; }
.flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.flow-step .step-n { width: 38px; height: 38px; margin: 0 auto 12px; border-radius: 50%; background: var(--grad-brand); color: #fff; display: grid; place-items: center; font-family: var(--ff-head); font-weight: 700; }
.flow-step p { font-size: 14px; font-weight: 500; color: var(--c-ink); }
.flow-step::after { content: '→'; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); color: var(--c-cyan); font-size: 18px; z-index: 2; }
.flow-step:last-child::after { display: none; }

/* article list */
.article-list { display: grid; gap: 12px; }
.article-row { display: flex; align-items: center; gap: 16px; padding: 20px 24px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-md); box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s, border-color .3s; }
.article-row:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: #cfe6ef; }
.article-row .a-num { font-family: var(--ff-head); font-weight: 700; color: var(--c-faint); font-size: 15px; flex: none; width: 30px; }
.article-row h3 { font-size: 17px; font-weight: 600; }
.article-row .arr { margin-left: auto; color: var(--c-teal); }

/* back to top */
.to-top { position: fixed; right: 22px; bottom: 22px; width: 46px; height: 46px; border-radius: 50%; background: var(--grad-brand);
  color: #fff; display: grid; place-items: center; box-shadow: var(--shadow-glow); z-index: 40; opacity: 0; pointer-events: none;
  transform: translateY(12px); transition: opacity .3s, transform .3s; }
.to-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { transform: translateY(-3px); }

/* ----------------------------- Responsive ----------------------------- */
@media (max-width: 1040px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--5 { grid-template-columns: repeat(3, 1fr); }
  .insight-grid { grid-template-columns: repeat(2, 1fr); }
  .layers { grid-template-columns: repeat(2, 1fr); }
  .layer__arrow { display: none; }
  .project-grid, .partner-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { grid-template-columns: 1fr 1fr; }
  .flow-step::after { display: none; }
}
/* Collapse the 9-item nav to a hamburger before it gets cramped. */
@media (max-width: 1080px) {
  .main-nav, .header-cta { display: none; }
  .nav-toggle { display: flex; }
}
@media (max-width: 920px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { min-height: 340px; max-width: 460px; }
  .video-block { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .evidence-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .grid--2, .grid--3, .grid--4, .grid--5,
  .insight-grid, .layers, .project-grid, .partner-grid,
  .category-grid, .protect-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .industry { grid-template-columns: 1fr; }
  .industry:nth-child(even) .industry__visual { order: 0; }
  .industry__visual { min-height: 180px; }
  .flow-steps { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; }
  .chip-card { flex-basis: 140px; }
  .announce__inner { font-size: 13px; }
  .hero__cta .btn, .page-hero__cta .btn { flex: 1 1 auto; }
}
@media (max-width: 420px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}