:root {
  --ink: #10151c;
  --muted: #5d6672;
  --bg: #f3f5f7;
  --line: #dfe3e8;
  --white: #fff;
  --accent: #fd6c08;
  --r: 14px;
  /* Swap any of these with url('images/xxx.jpg') to use real photos */
  --sky: linear-gradient(180deg, #9aa6b3 0%, #c9d0d8 55%, #8a96a3 100%);
}

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

html {
  scroll-behavior: smooth
}

body {
  font-family: Inter, system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased
}

a {
  color: inherit;
  text-decoration: none
}

h1,
h2,
h3,
h4 {
  font-family: Archivo, Inter, sans-serif;
  text-transform: uppercase;
  letter-spacing: -.01em;
  line-height: 1.05
}

h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  max-width: 16ch
}

h4 {
  font-size: 17px;
  font-weight: 700
}

.container {
  width: min(1200px, 100% - 40px);
  margin-inline: auto
}

section {
  padding: 90px 0
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: .06em
}

.tag.light {
  color: #cfd6de
}

.small {
  font-size: 13px;
  color: var(--muted)
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-radius: 999px;
  font-weight: 600;
  padding: 14px 22px;
  transition: .25s
}

.btn-sm {
  padding: 9px 9px 9px 18px;
  font-size: 13px
}

.btn i {
  font-style: normal;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff;
  color: var(--ink);
  font-size: 12px
}

.btn-dark {
  background: var(--ink);
  color: #fff
}

.btn-dark:hover {
  background: var(--accent)
}

.btn-light {
  background: #fff;
  color: var(--ink)
}

.btn-light i {
  background: var(--ink);
  color: #fff
}

/* nav */
.nav {
  position: fixed;
  inset: 14px 20px auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 14px 10px 20px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(14px);
  box-shadow: 0 6px 30px rgba(0, 0, 0, .08);
  max-width: 1200px;
  margin-inline: auto
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: Archivo;
  font-weight: 800;
  font-size: 18px
}

#menu {
  display: flex;
  gap: 4px;
  font-size: 13px;
  font-weight: 500
}

#menu a {
  padding: 8px 14px;
  border-radius: 999px;
  transition: .2s
}

#menu a:hover {
  background: rgba(0, 0, 0, .06)
}

#menu a.active,
#menu .pill {
  background: var(--accent);
  color: #fff
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--muted)
}

.burger {
  display: none;
  background: none;
  border: 0;
  width: 36px;
  height: 36px;
  cursor: pointer
}

.burger span {
  display: block;
  height: 2px;
  background: var(--ink);
  margin: 6px 8px
}

/* hero */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 0;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 16, 24, .15), rgba(10, 16, 24, .7)),
    url("https://images.unsplash.com/photo-1477959858617-67f85cf4f1df?q=80&w=944&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=NHwxMjA3fDA%3D") center/cover
}

.hero-card {
  position: absolute;
  right: 6%;
  top: 26%;
  width: 190px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .18);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .3)
}

.hero-card .play {
  height: 90px;
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(16, 21, 28, 0.25) 0%, rgba(16, 21, 28, 0.6) 100%), url('images/hero-card.jpg') center/cover no-repeat;
  display: grid;
  place-items: center;
  font-size: 20px;
  margin-bottom: 8px
}

.hero-card small {
  font-size: 11px
}

.hero-text {
  position: relative;
  width: min(1200px, 100% - 40px);
  margin: 0 auto 40px
}

.eyebrow {
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  opacity: .85;
  margin-bottom: 10px;
  max-width: 46ch
}

.hero h1 {
  font-size: clamp(64px, 13vw, 190px);
  font-weight: 800;
  line-height: .9;
  white-space: nowrap
}

/* intro */
.intro {
  padding: 70px 0 50px;
  text-align: center
}

.lead {
  font-family: Archivo;
  font-weight: 600;
  font-size: clamp(18px, 2.1vw, 26px);
  line-height: 1.4;
  max-width: 900px;
  margin: 0 auto 50px
}

.chip {
  display: inline-block;
  width: 70px;
  height: 30px;
  border-radius: 999px;
  vertical-align: middle;
  margin: 0 4px
}

.c1 {
  background: url('images/site1.jpg') center/cover no-repeat;
}

.c2 {
  background: url('images/crane2.jpg') center/cover no-repeat;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: left
}

.stats>div {
  background: var(--bg);
  border-radius: var(--r);
  padding: 20px 22px
}

.stats b {
  font-family: Archivo;
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 700
}

.stats span {
  font-family: Archivo;
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 700
}

.stats small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-top: 4px
}

/* image placeholders */
.blueprint,
.about-img,
.mv-img,
.process-img,
.ins-img,
.photo {
  background-size: cover;
  background-position: center
}

.blueprint {
  height: 380px;
  width: 100%;
  border-radius: var(--r);
  margin-top: 30px;
  display: block;
  object-fit: cover;
  object-position: center;
  background: transparent url('Building Sketch Drawing-selection.png') center/cover no-repeat;
  border: 0px solid var(--line);
}

.tower {
  background: url('images/tower.jpg') center/cover no-repeat;
  height: 220px;
  border-radius: var(--r);
  margin: 26px 0 20px;
  width: 100%;
  max-width: 460px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .06)
}

.site1 {
  background: url('images/site1.jpg') center/cover no-repeat
}

.site2 {
  background: url('images/site2.jpg') center/cover no-repeat
}

.meeting {
  background: url('images/meeting.jpg') center/cover no-repeat
}

.crane1 {
  background: linear-gradient(180deg, rgba(16, 21, 28, 0.15) 30%, rgba(16, 21, 28, 0.8) 100%), url('images/crane1.jpg') center/cover no-repeat
}

.crane2 {
  background: linear-gradient(180deg, rgba(16, 21, 28, 0.15) 30%, rgba(16, 21, 28, 0.8) 100%), url('images/crane2.jpg') center/cover no-repeat
}

.b1 {
  background: url('images/b1.jpg') center/cover no-repeat
}

.b2 {
  background: url('images/b2.jpg') center/cover no-repeat
}

.b3 {
  background: url('images/b3.jpg') center/cover no-repeat
}

/* about */
.about {
  background: var(--bg)
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px
}

.about-right p {
  color: var(--muted);
  margin-bottom: 20px
}

.about-right h5 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 8px
}

.mv {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 50px
}

.mv-card {
  background: #fff;
  border-radius: var(--r);
  overflow: hidden
}

.mv-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  height: auto;
}

.mv-body {
  padding: 20px 22px 26px
}

.mv-body h4 {
  margin: 12px 0 8px
}

.mv-body p {
  font-size: 13px;
  color: var(--muted)
}

.ico {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--bg);
  display: grid;
  place-items: center;
  font-size: 16px
}

/* expertise */
.expertise {
  position: relative;
  color: #fff;
  overflow: hidden
}

.exp-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 22, 30, .35), rgba(15, 22, 30, .6)), url("https://plus.unsplash.com/premium_photo-1661340695541-ee1ca7efedd0?q=80&w=1600&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=NHwxMjA3fDA%3D") center/cover #4d5a68
}

.expertise .container {
  position: relative
}

.exp-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 70px
}

.exp-card {
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: var(--r);
  padding: 24px;
  min-height: 220px;
  transition: .3s
}

.exp-card:hover {
  background: rgba(255, 255, 255, .22);
  transform: translateY(-6px)
}

.exp-card .ico {
  background: rgba(255, 255, 255, .2);
  margin-bottom: 60px
}

.exp-card p {
  font-size: 13px;
  opacity: .8;
  margin-top: 8px
}

/* process */
.process-head,
.why-head,
.ins-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: end;
  margin-bottom: 46px
}

.process-head p,
.why-head p,
.ins-head p {
  color: var(--muted);
  font-size: 14px
}

.process-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px
}

.process-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 380px;
  border-radius: var(--r)
}

.steps {
  list-style: none;
  display: flex;
  flex-direction: column
}

.steps li {
  padding: 22px 0;
  border-top: 1px solid var(--line)
}

.steps li:last-child {
  border-bottom: 1px solid var(--line)
}

.steps small {
  color: var(--accent);
  font-weight: 600;
  font-size: 12px
}

.steps h4 {
  margin: 6px 0
}

.steps p {
  color: var(--muted);
  font-size: 14px
}

/* why */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px
}

.why-stack {
  display: grid;
  gap: 14px
}

.why-card {
  border-radius: var(--r);
  padding: 24px;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end
}

.why-card p {
  font-size: 13px;
  opacity: .75;
  margin-top: 6px
}

.photo {
  color: #fff;
  min-height: 460px
}

.dark {
  background: #171c23;
  color: #fff;
  justify-content: space-between;
  min-height: 223px
}

.dark .ico {
  background: rgba(255, 255, 255, .1)
}

/* faq */
.faq {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px
}

.faq-left p {
  color: var(--muted);
  font-size: 14px;
  margin: 18px 0 26px
}

details {
  border-bottom: 1px solid var(--line);
  padding: 18px 0
}

summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 20px
}

summary::after {
  content: "+";
  font-size: 20px;
  line-height: 1
}

details[open] summary::after {
  content: "–"
}

details p {
  color: var(--muted);
  font-size: 14px;
  margin-top: 10px;
  max-width: 60ch
}

/* insights */
.ins-head {
  grid-template-columns: 1.2fr 1.2fr auto
}

.ins-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px
}

.ins-img {
  height: 230px;
  border-radius: var(--r);
  margin-bottom: 14px;
  transition: .4s
}

article:hover .ins-img {
  transform: scale(1.02)
}

.meta {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 8px
}

.ins-grid h4 {
  text-transform: none;
  font-family: Inter;
  font-size: 17px;
  margin-bottom: 6px
}

.ins-grid p {
  font-size: 13px;
  color: var(--muted)
}

/* footer */
.footer {
  position: relative;
  background: #2a3340;
  color: #fff;
  padding: 90px 0 20px;
  overflow: hidden
}

.foot-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(35, 43, 54, .55), rgba(20, 26, 34, .85)), url("https://plus.unsplash.com/premium_photo-1725408023469-d0659e7f3545?q=80&w=870&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=NHwxMjA3fDA%3D") center/cover #232b36
}

.footer .container {
  position: relative
}

.cta {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 30px;
  margin-bottom: 90px;
  flex-wrap: wrap
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  font-size: 13px
}

.foot-grid h6 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .08em;
  opacity: .6;
  margin: 0 0 14px
}

.foot-grid a {
  display: block;
  margin-bottom: 8px;
  opacity: .9
}

.foot-grid a:hover {
  opacity: 1;
  text-decoration: underline
}

.footer .small {
  color: #cfd6de;
  max-width: 36ch;
  margin-bottom: 24px
}

.sub {
  display: flex;
  background: #fff;
  border-radius: 999px;
  padding: 4px;
  max-width: 340px
}

.sub input {
  flex: 1;
  border: 0;
  background: none;
  padding: 0 14px;
  font: inherit;
  outline: none;
  min-width: 0
}

.sub button {
  background: var(--ink);
  color: #fff;
  border: 0;
  border-radius: 999px;
  padding: 9px 18px;
  font-weight: 600;
  cursor: pointer
}

.wordmark {
  font-family: Archivo;
  font-weight: 800;
  font-size: clamp(36px, 10.5vw, 160px);
  line-height: .85;
  color: rgba(255, 255, 255, .55);
  margin: 50px 0 10px;
  letter-spacing: -.02em;
  text-align: center
}

.legal {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  opacity: .6;
  flex-wrap: wrap;
  gap: 10px
}

/* reveal */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s, transform .8s
}

.reveal.in {
  opacity: 1;
  transform: none
}

/* responsive */
@media(max-width:900px) {
  section {
    padding: 60px 0
  }

  #menu,
  .phone {
    display: none
  }

  .burger {
    display: block
  }

  .menu-open #menu {
    display: flex;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    border-radius: 20px;
    padding: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .12)
  }

  .stats,
  .exp-grid {
    grid-template-columns: 1fr 1fr
  }

  .about-grid,
  .mv,
  .process-head,
  .process-body,
  .why-head,
  .why-grid,
  .faq,
  .ins-head,
  .ins-grid,
  .foot-grid {
    grid-template-columns: 1fr
  }

  .hero-card {
    display: none
  }

  .tower {
    width: 100%
  }
}

/* hero v2 — 3-slide carousel */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 0;
  height: min(88vh, 760px);
  margin: 14px;
  border-radius: 26px;
  background: #10151c;
}

.hero-slider {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
}

.hero-slider.grabbing {
  cursor: grabbing;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  transform: scale(1.02);
  display: flex;
  align-items: flex-end;
  color: #fff;
}

.hero-slide.active {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
  z-index: 2;
}

.hero-bg {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-size: cover;
  background-position: center;
}

/* Slide 1 Background */
.slide1-bg {
  background:
    linear-gradient(180deg, rgba(10, 16, 24, .15) 30%, rgba(10, 16, 24, .65) 100%),
    url("https://images.unsplash.com/photo-1477959858617-67f85cf4f1df?q=80&w=944&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=NHwxMjA3fDA%3D") center/cover;
}

/* Slide 2 Background (Modern Living) */
.slide2-bg {
  background:
    linear-gradient(180deg, rgba(16, 21, 28, 0.5) 0%, rgba(16, 21, 28, 0.08) 120px, rgba(255, 255, 255, 0) 45%, rgba(245, 245, 247, 0.55) 100%),
    url("images/hero-slide2.jpg") center/cover no-repeat;
}

/* Slide 3 Background (Smart Building) */
.slide3-bg {
  background:
    linear-gradient(180deg, rgba(16, 21, 28, 0.55) 0%, rgba(16, 21, 28, 0.15) 120px, rgba(16, 21, 28, 0.65) 100%),
    url("images/hero-slide3.jpg") center/cover no-repeat;
}

/* Slide 1 Elements */
.hero-card {
  right: 5%;
  top: auto;
  bottom: 90px;
  width: 170px;
  padding: 8px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .22);
  z-index: 3;
}

.hero-card .play {
  height: 110px;
  background: linear-gradient(180deg, rgba(16, 21, 28, 0.25) 0%, rgba(16, 21, 28, 0.6) 100%), url('images/hero-card.jpg') center/cover no-repeat;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 20px;
  margin-bottom: 8px;
}

.hero-text {
  width: calc(100% - 64px);
  margin: 0 32px 32px;
  z-index: 3;
}

.eyebrow {
  font-size: 11px;
  font-weight: 500;
  max-width: 48ch;
  margin-bottom: 14px;
  line-height: 1.5;
}

.hero h1 {
  font-family: Inter, sans-serif;
  font-weight: 500;
  font-size: clamp(44px, 8.4vw, 120px);
  line-height: 1;
  letter-spacing: -.02em;
  white-space: normal;
}

/* Slide 2 Styling (Modern Living - Ref 1) */
.slide2-left {
  position: absolute;
  left: 36px;
  top: 96px;
  max-width: 290px;
  z-index: 3;
}

.slide2-desc {
  font-size: 12px;
  color: #2a333f;
  line-height: 1.5;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.88);
  padding: 10px 14px;
  border-radius: 12px;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: #e45b00;
}

.slide2-headline {
  position: absolute;
  right: 50px;
  top: 90px;
  text-align: left;
  z-index: 3;
}

.slide2-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #4b5563;
  margin-bottom: 4px;
}

.slide2-title {
  font-family: Archivo, Inter, sans-serif;
  font-weight: 700;
  font-size: clamp(32px, 5.2vw, 64px);
  line-height: 1.05;
  color: #10151c;
  text-transform: none;
  letter-spacing: -0.02em;
}

.slide2-badge {
  position: absolute;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
  border-radius: 12px;
  padding: 10px 16px;
  color: var(--ink);
  z-index: 3;
}

.badge-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 2px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: #fff;
}

.slide2-badge small {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.slide2-badge strong {
  display: block;
  font-family: Archivo, sans-serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.1;
}

.badge-exp {
  left: 15%;
  top: 36%;
}

.badge-clients {
  right: 26%;
  top: 52%;
}

.slide2-proof {
  position: absolute;
  left: 36px;
  bottom: 28px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-radius: 16px;
  padding: 12px 16px;
  color: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  z-index: 3;
  max-width: 240px;
}

.avatar-stack {
  display: flex;
  margin-bottom: 6px;
}

.avatar-stack .av {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid #fff;
  margin-left: -6px;
  display: inline-block;
}
.avatar-stack .av:first-child { margin-left: 0; }
.avatar-stack .av1 { background: #7b8794; }
.avatar-stack .av2 { background: #d4a574; }
.avatar-stack .av3 { background: #394552; }
.avatar-stack .av4 { background: var(--accent); color: #fff; font-size: 10px; display: grid; place-items: center; }

.slide2-proof p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.35;
}
.slide2-proof strong {
  color: var(--ink);
}

.slide2-bottom-cards {
  position: absolute;
  right: 140px;
  bottom: 28px;
  display: flex;
  gap: 12px;
  z-index: 3;
}

.slide2-card {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-radius: 14px;
  padding: 12px 16px;
  max-width: 190px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  color: var(--ink);
}

.s2-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}
.s2-card-head h6 {
  font-size: 12px;
  font-weight: 700;
  margin: 0;
}
.s2-icon {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 10px;
}
.slide2-card p {
  font-size: 10.5px;
  color: var(--muted);
  line-height: 1.35;
}

/* Slide 3 Styling (Smart Building, Precision Cost - Ref 2) */
.slide3-left {
  position: absolute;
  left: 36px;
  top: 90px;
  max-width: 500px;
  z-index: 3;
}

.slide3-title {
  font-family: Archivo, Inter, sans-serif;
  font-size: clamp(30px, 5.2vw, 56px);
  font-weight: 800;
  line-height: 1.05;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.slide3-desc {
  font-size: 13px;
  color: #c9d2db;
  line-height: 1.5;
  margin-bottom: 18px;
  max-width: 440px;
}

.btn-yellow {
  background: #fdbb08;
  color: #10151c;
  font-weight: 700;
}
.btn-yellow:hover {
  background: #e8a902;
}

.slide3-crane-card {
  position: absolute;
  right: 50px;
  top: 90px;
  max-width: 310px;
  background: rgba(255, 255, 255, 0.95);
  color: #10151c;
  border-radius: 14px;
  padding: 14px 18px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
  z-index: 3;
}

.crane-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  font-weight: 700;
  color: #5d6672;
  letter-spacing: .06em;
  margin-bottom: 6px;
}

.slide3-crane-card h5 {
  font-family: Archivo, sans-serif;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 6px;
  color: #10151c;
}

.slide3-crane-card p {
  font-size: 11px;
  color: #5d6672;
  line-height: 1.4;
  margin-bottom: 10px;
}

.crane-badge {
  display: inline-block;
  background: rgba(253, 108, 8, 0.12);
  color: #d85700;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .04em;
}

.slide3-mat-card {
  position: absolute;
  left: 36px;
  bottom: 28px;
  display: flex;
  gap: 12px;
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  color: #10151c;
  border-radius: 14px;
  padding: 12px 16px;
  max-width: 340px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
  z-index: 3;
}

.mat-pic {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #f3f5f7;
  display: grid;
  place-items: center;
  font-size: 18px;
  flex-shrink: 0;
}

.mat-info h6 {
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: .04em;
  margin-bottom: 3px;
  color: #10151c;
}

.mat-info p {
  font-size: 10.5px;
  color: #5d6672;
  line-height: 1.35;
  margin-bottom: 4px;
}

.mat-btn {
  font-size: 10.5px;
  font-weight: 700;
  color: #d85700;
  text-decoration: none;
}

.slide3-expert-card {
  position: absolute;
  right: 140px;
  bottom: 28px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 14px;
  padding: 12px 18px;
  max-width: 210px;
  color: #fff;
  z-index: 3;
}

.slide3-expert-card h3 {
  font-family: Archivo, sans-serif;
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 2px;
}

.slide3-expert-card p {
  font-size: 10.5px;
  opacity: .85;
  line-height: 1.3;
  margin-bottom: 6px;
}

/* Slider Controls */
.hero-controls {
  position: absolute;
  right: 36px;
  bottom: 28px;
  display: flex;
  align-items: center;
  z-index: 10;
}

.hero-dots {
  display: flex;
  gap: 8px;
  background: rgba(16, 21, 28, 0.55);
  backdrop-filter: blur(10px);
  padding: 4px 6px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.hero-dot {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.65);
  font-family: Archivo, Inter, sans-serif;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
  cursor: pointer;
  transition: all .25s ease;
}

.hero-dot:hover:not(.active) {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.hero-dot.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(253, 108, 8, 0.4);
}

.nav {
  inset: 30px 40px auto
}

@media(max-width:900px) {
  .hero {
    height: 78vh;
    margin: 8px;
    border-radius: 20px
  }

  .hero-text {
    width: calc(100% - 36px);
    margin: 0 18px 22px
  }

  .eyebrow br {
    display: none
  }

  .nav {
    inset: 16px 16px auto;
  }
  .slide2-left, .slide2-badge, .slide2-bottom-cards, .slide3-crane-card, .slide3-mat-card, .slide3-expert-card {
    display: none;
  }
  .slide2-headline, .slide3-left {
    position: static;
    margin: 20px 18px 80px;
    max-width: 100%;
  }
  .slide2-proof {
    left: 18px;
    bottom: 24px;
    max-width: calc(100% - 160px);
  }
  .hero-controls {
    right: 18px;
    bottom: 20px;
    flex-direction: row-reverse;
    align-items: center;
  }
}

/* expertise v2 — light framed image with staggered glass cards */
.expertise {
  background: #fff;
  color: var(--ink)
}

.exp-bg {
  display: none
}

.expertise>.container {
  border-radius: var(--r);
  padding: 36px 36px 40px;
  text-align: center;
  background: linear-gradient(180deg, #fff 0, rgba(255, 255, 255, .85) 18%, rgba(255, 255, 255, 0) 52%),
    url("https://plus.unsplash.com/premium_photo-1661340695541-ee1ca7efedd0?q=80&w=1600&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=NHwxMjA3fDA%3D") center/cover #c9d3de
}

.expertise .tag.light {
  color: var(--muted)
}

.expertise h2 {
  max-width: 20ch;
  margin: 0 auto
}

.exp-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 90px;
  text-align: left
}

.exp-card {
  background: rgba(70, 80, 92, .72);
  backdrop-filter: blur(16px);
  border: 0;
  border-radius: 10px;
  color: #fff;
  min-height: 190px;
  margin: 4px;
  padding: 18px
}

.exp-card:hover {
  transform: none;
  background: rgba(55, 65, 77, .82)
}

.exp-card .ico {
  background: #fff;
  color: var(--ink);
  width: 30px;
  height: 30px;
  border-radius: 6px;
  margin-bottom: 44px
}

.exp-card:nth-child(1) {
  grid-column: 2;
  grid-row: 1
}

.exp-card:nth-child(2) {
  grid-column: 3;
  grid-row: 1
}

.exp-card:nth-child(3) {
  grid-column: 1;
  grid-row: 2
}

.exp-card:nth-child(4) {
  grid-column: 2;
  grid-row: 2
}

@media(max-width:900px) {
  .expertise>.container {
    padding: 24px 16px
  }

  .exp-grid {
    grid-template-columns: 1fr;
    margin-top: 40px
  }

  .exp-card:nth-child(n) {
    grid-column: auto;
    grid-row: auto
  }
}

/* nav: transparent over hero, pill after scrolling */
.nav {
  transition: background .3s, box-shadow .3s, backdrop-filter .3s, color .3s, inset .3s
}

.nav:not(.scrolled) {
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  color: #fff
}

.nav:not(.scrolled) .nav-right {
  color: rgba(255, 255, 255, .85)
}

.nav:not(.scrolled) #menu a:hover {
  background: rgba(255, 255, 255, .15)
}

.nav:not(.scrolled) #menu a.active {
  background: rgba(255, 255, 255, .22);
  color: #fff
}

.nav:not(.scrolled) .btn-dark {
  background: #fff;
  color: var(--ink)
}

.nav:not(.scrolled) .btn-dark i {
  background: var(--ink);
  color: #fff
}

.nav:not(.scrolled) .burger span {
  background: #fff
}

@media(max-width:900px) {
  .nav:not(.scrolled).nav {
    color: #fff
  }

  .menu-open .nav:not(.scrolled) #menu a {
    color: var(--ink)
  }
}

/* scroll animations */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background: var(--accent);
  transform-origin: 0 50%;
  transform: scaleX(0);
  z-index: 100
}

.reveal.from-left {
  transform: translateX(-50px)
}

.reveal.from-right {
  transform: translateX(50px)
}

.reveal.zoom {
  transform: scale(.92)
}

.reveal.in {
  transform: none
}

.hero-bg,
.hero h1,
.hero-card {
  will-change: transform
}

.stagger {
  transition-delay: calc(var(--i, 0)*110ms)
}

.steps li {
  transition: padding-left .3s, border-color .3s
}

.steps li:hover {
  padding-left: 12px;
  border-color: var(--accent)
}

.mv-card,
.why-card {
  transition: opacity .8s, transform .6s, box-shadow .35s
}

.mv-card:hover,
.why-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .12)
}

@media(prefers-reduced-motion:reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none
  }

  .hero-bg,
  .hero h1,
  .hero-card {
    transform: none !important
  }
}