:root{
  --black:        #000000;   /* deck slide background (dark) */
  --navy:        #0A1F2E;   /* deck slide background (dark) */
  --navy-deep:   #071620;
  --navy-line:   #1E3548;

  --light:       #F2F4F3;   /* deck slide background (light) */
  --light-card:  #FFFFFF;

  --navy-text:   #0B3165;   /* headings on light bg, e.g. "RISM Chemical..." */
  --navy-pill:   #02254E;   /* MSDS pill / flask label band */
  --blue:        #14498C;   /* Inline tag / water icon family */
  --blue-light:  #2F8FBE;   /* Offline tag gradient end */
  --green:       #0E7A3B;   /* safety leaf / check icons */
  --red:         #E0431B;   /* hazard icon */

  --text-on-navy:      #FFFFFF;
  --text-on-navy-sub:  #C3D0D8;
  --text-on-light:     #3B4750;

  --font-display: 'Poppins', sans-serif;
  --font-body:    'Inter', sans-serif;

  --wrap: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--light);
  color: var(--text-on-light);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; }
h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 700;
  margin: 0 0 0.4em;
}
p{ margin: 0 0 1em; }
ul{ margin:0; padding:0; list-style:none; }

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

a:focus-visible, .btn:focus-visible{
  outline: 3px solid var(--blue-light);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
}

/* ============================================================
   Header
   ============================================================ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 400;
  background: var(--black);
  border-bottom: 1px solid var(--navy-line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding-top: 10px;
  padding-bottom: 10px;
}
.logo{ height: 60px; width:auto; }
.site-nav{ display:flex; gap: 28px; }
.site-nav a{
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  text-decoration:none;
  color: var(--text-on-navy-sub);
  border-bottom: 2px solid transparent;
  padding-bottom: 3px;
  transition: border-color .2s, color .2s;
}

.site-nav a:hover{ color: #fff; border-color: var(--blue-light); }

@media (max-width: 760px){
  .site-nav{ display:none; }
}

/* ============================================================
   Watermark logo (as seen on several slides in the deck)
   ============================================================ */
.watermark{
  position:absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 420px;
  opacity: 0.06;
  z-index: 0;
  pointer-events: none;
}
.watermark-bottom{
  right: 20px;
  bottom: -20px;
  top: auto;
  transform: none;
}

/* ============================================================
   Navy sections (slides 1, 2, 4, 6)
   ============================================================ */
.section-navy{
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: var(--text-on-navy);
  padding: 84px 0;
}
.section-navy h2{
  color: #fff;
  font-size: 2.1rem;
}
.section-navy p{ color: var(--text-on-navy-sub); }

/* ============================================================
   Light sections (slides 3, 5)
   ============================================================ */
.section-light{
  background: var(--light);
  padding: 84px 0;
}
.section-light h2{ color: var(--navy-text); }

/* ============================================================
   Hero — slide 1
   ============================================================ */
.hero-grid{
  display:grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items:center;
}
.circle-frame{
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 0 10px rgba(255,255,255,0.04), 0 30px 70px -20px rgba(0,0,0,0.6);
}
.circle-frame img{
  width:100%; height:100%; object-fit: cover;
}
.hero-copy h1{
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  line-height: 1.05;
  margin-bottom: 22px;
}
.hero-copy p{ font-size: 1.05rem; max-width: 56ch; }
.hero-copy strong{ color:#fff; }
.hero-copy .callout{
  font-weight: 700;
  color: #fff;
  background: rgba(255,255,255,0.06);
  border-left: 3px solid var(--blue-light);
  padding: 16px 20px;
  border-radius: 2px;
}

@media (max-width: 860px){
  .hero-grid{ grid-template-columns: 1fr; }
  .circle-frame{ max-width: 340px; margin: 0 auto; }
}

/* ============================================================
   Characteristics — slide 2
   ============================================================ */
.char-grid{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items:center;
}
.char-intro{ max-width: 52ch; font-size: 1.05rem; margin-bottom: 34px; }
.char-list{ display:flex; flex-direction:column; gap: 26px; }
.char-list li{
  display:grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  align-items:flex-start;
}
.char-icon{
  width:52px; height:52px;
  border-radius: 50%;
  border: 1px solid var(--blue-light);
  display:flex; align-items:center; justify-content:center;
  color: var(--blue-light);
  flex-shrink:0;
}
.char-icon svg{ width:26px; height:26px; }
.char-list h3{
  font-size: 1.1rem;
  color:#fff;
  margin-bottom:4px;
}
.char-list p{ color: var(--text-on-navy-sub); margin:0; font-size: 0.96rem; }
.char-visual img{
  border-radius: 6px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6);
}

@media (max-width: 860px){
  .char-grid{ grid-template-columns: 1fr; }
  .char-visual{ order:-1; }
}

/* ============================================================
   Safety — slide 3
   ============================================================ */
.msds-badge{
  display:inline-block;
  background: var(--navy-pill);
  color:#fff;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 20px;
  margin-bottom: 26px;
}
.safety-title{
  font-size: 1.9rem;
  max-width: 30ch;
}
.safety-sub{
  color: var(--text-on-light);
  opacity: 0.75;
  font-size: 1.05rem;
  margin-bottom: 46px;
}
.safety-grid{
  display:grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 50px;
  align-items:center;
}
.safety-visual img{
  border-radius: 6px;
  box-shadow: 0 24px 50px -18px rgba(20,15,10,0.2);
}
.safety-list{ display:flex; flex-direction:column; gap: 26px; }
.safety-item{
  display:grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  align-items:flex-start;
}
.safety-icon{
  width: 46px; height: 46px;
  border-radius: 50%;
  display:flex; align-items:center; justify-content:center;
  background: var(--light-card);
  flex-shrink:0;
}
.safety-icon svg{ width:22px; height:22px; }
.icon-green{ color: var(--green); box-shadow: 0 0 0 1px rgba(14,122,59,0.3), 0 0 14px rgba(14,122,59,0.25); }
.icon-red{ color: var(--red); box-shadow: 0 0 0 1px rgba(224,67,27,0.3), 0 0 14px rgba(224,67,27,0.25); }
.icon-blue{ color: var(--blue); box-shadow: 0 0 0 1px rgba(20,73,140,0.3), 0 0 14px rgba(20,73,140,0.25); }
.safety-item h3{
  font-size: 1.05rem;
  color: var(--navy-text);
  margin-bottom: 3px;
  text-decoration: underline;
  text-decoration-color: rgba(11,49,101,0.25);
  text-underline-offset: 3px;
}
.safety-item p{ margin:0; font-size: 0.95rem; color: var(--text-on-light); }

.safety-footer-bar{
  margin-top: 44px;
  background: linear-gradient(90deg, var(--green), var(--navy-pill));
  color: #fff;
  font-weight: 600;
  font-size: 0.98rem;
  padding: 16px 26px;
  border-radius: 30px;
}
.safety-footnote{
  margin-top: 18px;
  color: var(--text-on-light);
  opacity: 0.7;
  font-size: 0.92rem;
}

@media (max-width: 860px){
  .safety-grid{ grid-template-columns: 1fr; }
  .safety-visual{ max-width: 280px; margin: 0 auto; }
}

/* ============================================================
   Implementation — slide 4
   ============================================================ */
.impl-layout{
  display:grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 44px;
  margin-top: 40px;
  align-items:start;
}
.impl-diagram{
  background: #fff;
  border-radius: 6px;
  padding: 8px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.55);
}
.impl-text h3{
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 12px;
}
.impl-text h3:not(:first-child){ margin-top: 26px; }
.impl-text ul{ display:flex; flex-direction:column; gap: 10px; }
.impl-text li{
  color: var(--text-on-navy-sub);
  font-size: 0.96rem;
  padding-left: 18px;
  position: relative;
}
.impl-text li::before{
  content:'';
  position:absolute;
  left:0; top:0.6em;
  width:6px; height:6px;
  border-radius: 50%;
  background: var(--blue-light);
}
.impl-footnote{
  margin-top: 34px;
  font-weight: 600;
  color: #fff;
  font-size: 1rem;
  max-width: 70ch;
}

@media (max-width: 900px){
  .impl-layout{ grid-template-columns: 1fr; }
}

/* ============================================================
   Benefits — slide 5
   ============================================================ */
.benefits-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom: 44px;
}
.benefits-head h2{ margin:0; font-size: 2.1rem; }
.benefits-logo{ height: 56px; width:auto; }
.benefits-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.benefit{
  background: var(--light-card);
  border-radius: 6px;
  padding: 30px 26px;
  box-shadow: 0 10px 30px -18px rgba(11,49,101,0.15);
}
.benefit-icon{
  width:48px; height:48px;
  color: var(--blue);
  margin-bottom: 18px;
}
.benefit-icon svg{ width:100%; height:100%; }
.benefit h3{
  font-size: 1.1rem;
  color: var(--navy-text);
  margin-bottom: 10px;
}
.benefit p{ margin:0; font-size: 0.95rem; color: var(--text-on-light); }

@media (max-width: 860px){
  .benefits-grid{ grid-template-columns: 1fr; }
  .benefits-head{ flex-direction:column; align-items:flex-start; gap: 16px; }
}

/* ============================================================
   Environment — slide 6
   ============================================================ */
.section-env{ position: relative; }
.env-grid{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items:center;
}
.env-intro{
  color: var(--text-on-navy-sub);
  font-weight: 600;
  margin-bottom: 26px;
}
.env-list{ display:flex; flex-direction:column; gap: 14px; }
.env-list li{
  color: var(--text-on-navy-sub);
  font-size: 1.02rem;
  padding-left: 24px;
  position: relative;
}
.env-list li::before{
  content:'';
  position:absolute;
  left:0; top:0.5em;
  width:9px; height:9px;
  border-radius: 50%;
  background: var(--green);
}
.env-visual img{
  border-radius: 10px;
}

@media (max-width: 860px){
  .env-grid{ grid-template-columns: 1fr; }
  .env-visual{ order:-1; }
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{
  background: var(--navy-deep);
  border-top: 1px solid var(--navy-line);
  padding: 30px 0;
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.footer-logo{ height: 34px; }
.footer-inner p{
  margin:0;
  font-size: 13px;
  color: var(--text-on-navy-sub);
}