/* ==========================================================================
   WHY AAC BLOCKS? — ADVANTAGES & ENGINEERING GUIDE STYLES
   Source: https://aac-block-advantages-guide.mitesh958.chatgpt.site/
   ========================================================================== */

:root {
  --navy: #0B1727;
  --blue: #0C4F80;
  --silver: #EEF2F5;
  --light: #F5F7F8;
  --text: #0B1727;
  --sub: #5E6874;
  --muted: #84909C;
  --line: #DCE2E7;
  --hi: #8FC6EC;
  --pad: clamp(22px, 7vw, 110px);
  --max: 1400px;
}

.why-aac-body {
  margin: 0;
  font-family: 'Inter', 'Geist', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.why-aac-body * {
  box-sizing: border-box;
}

.why-aac-body a {
  color: inherit;
}

.why-aac-body img {
  display: block;
  max-width: 100%;
}

.wac-wrap {
  max-width: var(--max);
  margin: auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

/* ==========================================================================
   Typography & Shared Utilities
   ========================================================================== */

.wac-eyebrow {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--blue);
  margin: 0 0 22px;
  display: block;
}

.wac-section-title {
  font-size: clamp(44px, 6vw, 86px);
  line-height: .98;
  letter-spacing: -.055em;
  margin: 0;
  font-weight: 650;
  color: var(--text);
}

.wac-section-title span {
  color: var(--muted);
  font-weight: 400;
}

.wac-lead {
  font-size: clamp(17px, 1.45vw, 20px);
  color: var(--sub);
  max-width: 620px;
  margin: 28px 0;
  line-height: 1.65;
}

.wac-actions {
  display: flex;
  align-items: center;
  gap: 25px;
  flex-wrap: wrap;
}

.wac-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff !important;
  text-decoration: none;
  padding: 15px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14.5px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(12, 79, 128, 0.2);
}

.wac-btn:hover {
  background: #083c63;
  transform: translateY(-2px);
}

.wac-text-link {
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1.5px solid var(--muted);
  padding: 4px 0;
  color: var(--navy);
  transition: all 0.2s ease;
}

.wac-text-link:hover {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

.wac-section {
  padding: clamp(90px, 11vw, 165px) 0;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.wac-hero {
  min-height: calc(100vh - 72px);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #f7f7f6;
}

.wac-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
}

.wac-hero:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, .98) 0%, rgba(255, 255, 255, .91) 32%, rgba(255, 255, 255, .2) 60%, rgba(255, 255, 255, 0) 100%);
  pointer-events: none;
}

.wac-hero-copy {
  position: relative;
  z-index: 2;
  width: min(650px, 48vw);
  padding-top: 80px;
  padding-bottom: 80px;
}

.wac-hero h1 {
  font-size: clamp(46px, 6.2vw, 92px);
  line-height: .98;
  letter-spacing: -.055em;
  margin: 0;
  color: var(--navy);
  font-weight: 700;
}

.wac-hero h1 span {
  color: var(--muted);
  font-weight: 400;
  display: block;
}

/* ==========================================================================
   01 Intro Section: What is AAC?
   ========================================================================== */

.wac-intro {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(50px, 9vw, 150px);
}

.wac-copy {
  font-size: 18px;
  color: var(--sub);
  line-height: 1.7;
}

.wac-copy p:first-child {
  margin-top: 0;
}

.wac-process-note {
  margin-top: 40px;
  padding-left: 22px;
  border-left: 2px solid var(--hi);
  color: var(--navy);
  font-weight: 500;
  font-size: 16.5px;
}

/* ==========================================================================
   02 Dark Section: Five Practical Advantages
   ========================================================================== */

.wac-dark {
  background: linear-gradient(135deg, #104F7D, #09263D);
  color: #fff;
}

.wac-dark .wac-eyebrow {
  color: var(--hi);
}

.wac-dark .wac-section-title {
  color: #fff;
}

.wac-dark .wac-section-title span {
  color: #9db4c3;
}

.wac-section-head {
  display: grid;
  grid-template-columns: 1.05fr .75fr;
  gap: 60px;
  align-items: end;
  margin-bottom: 85px;
}

.wac-section-head p {
  color: #c6d2da;
  font-size: 18px;
  margin: 0;
  line-height: 1.65;
}

.wac-benefits {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid rgba(255, 255, 255, .2);
}

.wac-benefit {
  padding: 35px 25px 20px 0;
  border-right: 1px solid rgba(255, 255, 255, .15);
  margin-right: 25px;
}

.wac-benefit:last-child {
  border-right: 0;
  margin-right: 0;
}

.wac-benefit .wac-num {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--hi);
  font-weight: 700;
}

.wac-benefit h3 {
  font-size: 21px;
  line-height: 1.25;
  margin: 38px 0 14px;
  color: #fff;
  font-weight: 650;
}

.wac-benefit p {
  color: #c6d2da;
  font-size: 14.5px;
  margin: 0;
  line-height: 1.6;
}

/* ==========================================================================
   03 Limits Section: Important Limitations
   ========================================================================== */

.wac-limits {
  background: var(--silver);
}

.wac-limits-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(55px, 10vw, 150px);
}

.wac-limits ul {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid #cbd3d9;
}

.wac-limits li {
  padding: 20px 0;
  border-bottom: 1px solid #cbd3d9;
  display: grid;
  grid-template-columns: 35px 1fr;
  color: var(--sub);
  font-size: 16px;
  line-height: 1.6;
}

.wac-limits li:before {
  content: "—";
  color: var(--blue);
  font-weight: 700;
}

/* ==========================================================================
   04 Comparison Section: AAC Blocks vs Red Bricks
   ========================================================================== */

.wac-comparison {
  overflow-x: auto;
  margin-top: 65px;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.wac-comparison table {
  border-collapse: collapse;
  width: 100%;
  min-width: 760px;
  font-size: 15px;
}

.wac-comparison th {
  text-align: left;
  background: var(--navy);
  color: #fff;
  padding: 20px;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}

.wac-comparison td {
  padding: 20px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--text);
  line-height: 1.6;
}

.wac-comparison td:first-child {
  font-weight: 650;
  width: 22%;
  color: var(--navy);
  background: #fff;
}

.wac-comparison tbody tr:nth-child(even) {
  background: var(--light);
}

/* ==========================================================================
   05 Quality Section: Why Manufacturing Quality Matters
   ========================================================================== */

.wac-quality {
  background: var(--light);
}

.wac-quality-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(60px, 9vw, 130px);
  margin-top: 75px;
}

.wac-steps {
  border-top: 1px solid var(--line);
}

.wac-step {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 30px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.wac-step strong {
  font-size: 15.5px;
  color: var(--navy);
  font-weight: 650;
}

.wac-step span {
  color: var(--sub);
  font-size: 15px;
  line-height: 1.55;
}

/* ==========================================================================
   06 Investor Section: The Market Buys Reliable Blocks
   ========================================================================== */

.wac-investor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(60px, 9vw, 140px);
}

.wac-investor-list {
  counter-reset: item;
  margin: 0;
  padding: 0;
  list-style: none;
}

.wac-investor-list li {
  counter-increment: item;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 40px 1fr;
  color: var(--sub);
  font-size: 16px;
  line-height: 1.55;
}

.wac-investor-list li:first-child {
  border-top: 1px solid var(--line);
}

.wac-investor-list li:before {
  content: "0" counter(item);
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

/* ==========================================================================
   07 Standards Section: IS Standard for AAC Blocks
   ========================================================================== */

.wac-standards {
  background: var(--navy);
  color: #fff;
}

.wac-standards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(60px, 9vw, 140px);
  align-items: center;
}

.wac-standards h2 {
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.04;
  letter-spacing: -.045em;
  margin: 0;
  color: #fff;
}

.wac-standard-box {
  border-left: 1px solid #456175;
  padding-left: clamp(30px, 5vw, 75px);
}

.wac-standard-code {
  color: var(--hi);
  font-size: 13px;
  letter-spacing: .14em;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.wac-standard-box p {
  color: #c8d3da;
  font-size: 16.5px;
  line-height: 1.65;
}

.wac-official-link {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid var(--hi);
  padding-bottom: 5px;
  font-weight: 600;
  font-size: 15px;
  margin-top: 16px;
  transition: all 0.2s ease;
}

.wac-official-link:hover {
  color: var(--hi);
}

/* ==========================================================================
   08 Approach Section: One Connected Production System
   ========================================================================== */

.wac-approach {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(60px, 9vw, 140px);
}

/* ==========================================================================
   09 FAQ Section
   ========================================================================== */

.wac-faq {
  background: var(--light);
}

.wac-faq details {
  border-bottom: 1px solid var(--line);
  padding: 25px 0;
}

.wac-faq details:first-child {
  border-top: 1px solid var(--line);
}

.wac-faq summary {
  cursor: pointer;
  font-size: 20px;
  font-weight: 600;
  list-style: none;
  padding-right: 30px;
  position: relative;
  color: var(--navy);
  transition: color 0.2s ease;
}

.wac-faq summary:hover {
  color: var(--blue);
}

.wac-faq summary::-webkit-details-marker {
  display: none;
}

.wac-faq summary:after {
  content: "+";
  position: absolute;
  right: 0;
  color: var(--blue);
  font-size: 26px;
  line-height: 1;
  font-weight: 300;
}

.wac-faq details[open] summary:after {
  content: "−";
}

.wac-faq details p {
  max-width: 850px;
  color: var(--sub);
  font-size: 16px;
  line-height: 1.65;
  margin: 16px 0 0;
}

/* ==========================================================================
   10 CTA Section: Discuss Your AAC Plant Requirement
   ========================================================================== */

.wac-cta {
  text-align: center;
  background: linear-gradient(180deg, #fff, #eef2f5);
}

.wac-cta h2 {
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.04;
  letter-spacing: -.045em;
  margin: 0;
  color: var(--navy);
}

.wac-cta h2 span {
  color: var(--muted);
}

.wac-cta p {
  max-width: 670px;
  margin: 24px auto 34px;
  color: var(--sub);
  font-size: 18px;
  line-height: 1.6;
}

.wac-cta .wac-btn {
  padding: 16px 32px;
  font-size: 15px;
}

/* ==========================================================================
   Responsive Styles
   ========================================================================== */

@media (max-width: 980px) {
  .wac-benefits {
    grid-template-columns: 1fr 1fr;
  }
  .wac-benefit {
    border-bottom: 1px solid rgba(255, 255, 255, .15);
    margin-bottom: 20px;
  }
  .wac-intro,
  .wac-section-head,
  .wac-limits-grid,
  .wac-quality-grid,
  .wac-investor-grid,
  .wac-standards-grid,
  .wac-approach {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .wac-hero-copy {
    width: 65vw;
  }
  .wac-hero:after {
    background: linear-gradient(90deg, rgba(255, 255, 255, .98) 0%, rgba(255, 255, 255, .88) 48%, rgba(255, 255, 255, .15) 80%);
  }
}

@media (max-width: 640px) {
  .wac-hero {
    min-height: 790px;
    align-items: flex-start;
  }
  .wac-hero-img {
    height: 54%;
    top: auto;
    object-position: 70% center;
  }
  .wac-hero:after {
    background: linear-gradient(180deg, #fff 0%, #fff 48%, rgba(255, 255, 255, .72) 66%, rgba(255, 255, 255, .05) 90%);
  }
  .wac-hero-copy {
    width: 100%;
    padding-top: 70px;
  }
  .wac-hero h1 {
    font-size: 44px;
  }
  .wac-section-title {
    font-size: 40px;
  }
  .wac-benefits {
    grid-template-columns: 1fr;
  }
  .wac-benefit {
    margin: 0 0 20px;
    padding-right: 0;
    border-right: 0;
  }
  .wac-step {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .wac-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .wac-actions .wac-btn {
    width: 100%;
  }
}