:root{
  --blue-main:#0D4FB6;
  --blue-dark:#083A8A;
  --green-accent:#7ED957;
  --navy:#1E2A39;
  --offwhite:#F7FAFF;
  --white:#FFFFFF;
  --soft-border:#e6edf7;
}

/* ============================= */
/* BASE */
/* ============================= */

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
  overflow-x:hidden;
  scrollbar-gutter:stable;
}

body{
  overflow-x:hidden;
}

body{
  margin:0;
  font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  background:var(--blue-dark);
  color:var(--navy);
  line-height:1.7;
}

img{
  max-width:100%;
  height:auto;
  display:block;
}

iframe{
  display:block;
}

/* ============================= */
/* ACCESSIBILITY */
/* ============================= */

.skip-link{
  position:absolute;
  left:-9999px;
  top:1rem;
  background:var(--green-accent);
  color:#05386b;
  padding:.6rem .9rem;
  border-radius:6px;
  font-weight:600;
  text-decoration:none;
  z-index:2000;
}

.skip-link:focus{
  left:1rem;
}

/* ============================= */
/* NAVIGATION */
/* ============================= */

.main-nav{
  position:fixed;
  top:1.2rem;
  right:1.5rem;
  z-index:1000;
  transition:transform .35s ease, opacity .35s ease;
}

.main-nav.nav-hidden{
  transform:translateY(-140%);
  opacity:0;
  pointer-events:none;
}

.main-nav > ul{
  list-style:none;
  margin:0;
  padding:.18rem .28rem;
  display:flex;
  gap:.02rem;
  transition:padding .25s ease, gap .25s ease, background .25s ease;
}

.main-nav > ul:hover{
  padding:.25rem .4rem;
  gap:.1rem;
  background:rgba(94,207,173,.38);
  backdrop-filter:blur(24px) saturate(1.4);
  -webkit-backdrop-filter:blur(24px) saturate(1.4);
  border:1px solid rgba(255,255,255,.55);
  border-bottom-color:rgba(255,255,255,.2);
  border-radius:999px;
  box-shadow:0 4px 20px rgba(0,0,0,.15), inset 0 1px 0 rgba(255,255,255,.5);
}

.main-nav > ul > li{
  position:relative;
}

.main-nav > ul > li > a{
  display:block;
  padding:.36rem .78rem;
  text-decoration:none;
  font-weight:600;
  color:rgba(255,255,255,.92);
  border-radius:999px;
  font-size:.95rem;
  letter-spacing:.02em;
  transition:background .2s ease, color .2s ease;
}

.main-nav > ul > li > a:hover,
.main-nav > ul > li > a:focus{
  background:var(--green-accent);
  color:#05386b;
}

/* ============================= */
/* SUBMENU                       */
/* ============================= */

.has-submenu{
  position:relative;
}

.submenu-toggle{
  display:block;
  padding:.36rem .78rem;
  background:none;
  border:none;
  font:inherit;
  font-weight:600;
  font-size:.95rem;
  letter-spacing:.02em;
  color:rgba(255,255,255,.92);
  border-radius:999px;
  cursor:pointer;
  transition:background .2s ease, color .2s ease;
}

.submenu-toggle:hover,
.submenu-toggle:focus{
  background:var(--green-accent);
  color:#05386b;
  outline:none;
}

.submenu-toggle[aria-expanded="true"]{
  background:var(--green-accent);
  color:#05386b;
}

.submenu-arrow{
  font-size:.75rem;
  display:inline-block;
  transition:transform .2s ease;
}

.submenu-toggle[aria-expanded="true"] .submenu-arrow{
  transform:rotate(180deg);
}

.submenu{
  display:none;
  position:absolute;
  top:calc(100% + .5rem);
  left:50%;
  transform:translateX(-50%);
  list-style:none;
  margin:0;
  padding:.4rem;
  min-width:220px;
  background:rgba(13,79,182,.95);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid rgba(126,217,87,.25);
  border-radius:14px;
  box-shadow:0 12px 32px rgba(0,0,0,.3);
  z-index:1001;
  flex-direction:column;
  gap:0;
}

.submenu.is-open{
  display:flex;
  flex-direction:column;
}

.submenu li a{
  display:block;
  padding:.6rem 1rem;
  border-radius:10px;
  color:rgba(255,255,255,.9);
  font-size:.88rem;
  white-space:nowrap;
  text-decoration:none;
}

.submenu li a:hover,
.submenu li a:focus{
  background:var(--green-accent);
  color:#05386b;
}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:none;
  background:rgba(13,79,182,.55);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid rgba(126,217,87,.25);
  border-radius:50%;
  box-shadow:0 8px 24px rgba(0,0,0,.25);
  padding:0;
  cursor:pointer;
}

.nav-toggle span{
  display:block;
  width:20px;
  height:2px;
  background:white;
  margin:4px auto;
  border-radius:999px;
  transition:transform .22s ease, opacity .2s ease;
}

/* ============================= */
/* HERO */
/* ============================= */

.hero{
  background: linear-gradient(180deg,var(--blue-main) 0%,var(--blue-dark) 100%);
  color:white;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:92vh;
  padding:7rem 1.2rem 5rem;
  text-align:center;
  width:100%;
  box-sizing:border-box;
}

.hero-content{
  max-width:880px;
  margin:0 auto;
}

.hero-logo{
  width:200px;
  height:auto;
  margin:0 auto 1.4rem;
}

.hero-title{
  font-size:clamp(3.2rem,6vw,5.2rem);
  margin:0;
  letter-spacing:-.035em;
  line-height:1.02;
  font-weight:700;
  color:white;
  text-decoration:none;
}

.brand-accent{
  color:var(--green-accent);
}

.slogan{
  font-size:clamp(.95rem,1.4vw,1.2rem);
  margin:1rem auto 0;
  max-width:560px;
  opacity:.96;
  color:#A8C8BC;
  text-wrap:balance;
}

.hero-divider{
  width:92px;
  height:4px;
  border-radius:999px;
  margin:1.35rem auto 0;
  background:rgba(255,255,255,.35);
}

.hero-intro{
  margin:2.2rem auto 0;
  font-size:clamp(1.05rem,1.5vw,1.3rem);
  max-width:660px;
  line-height:1.75;
}

.hero-actions{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:1.2rem;
  margin-top:2.2rem;
  flex-wrap:wrap;
}

.btn-cta{
  display:inline-block;
  margin-top:0;
  background:var(--green-accent);
  color:#05386b;
  padding:1rem 1.9rem;
  border-radius:14px;
  text-decoration:none;
  font-weight:700;
  box-shadow:0 8px 18px rgba(0,0,0,.2);
  transition:transform .2s ease, opacity .2s ease;
}

.btn-cta:hover{
  transform:translateY(-2px);
  opacity:.96;
}

.btn-secondary{
  display:inline-block;
  margin-top:0;
  margin-left:0;
  color:rgba(255,255,255,.85);
  text-decoration:none;
  font-weight:600;
  font-size:.95rem;
  border-bottom:1px solid rgba(255,255,255,.35);
  padding-bottom:.1rem;
  transition:color .2s ease, border-color .2s ease;
}

.btn-secondary:hover{
  color:var(--green-accent);
  border-color:var(--green-accent);
}

/* ============================= */
/* SECTIONS */
/* ============================= */

.section{
  max-width:1120px;
  margin:auto;
  padding:5rem 1.4rem;
}

.section h2{
  font-size:clamp(2rem,3vw,2.7rem);
  margin:0 0 1rem;
}

.section h3{
  line-height:1.25;
}

.section-heading{
  margin-bottom:2rem;
}

.section-intro{
  max-width:100%;
  color:#334155;
  margin:0;
}

.divider{
  border-top:1px solid rgba(13,79,182,.15);
}

/* ============================= */
/* SERVICES */
/* ============================= */

.services-section{
  margin-top:-1.5rem;
}

.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:32px;
  align-items:stretch;
  grid-auto-rows:1fr;
}

/* ============================= */
/* CARDS */
/* ============================= */

.card{
  background: white;
  border-radius:22px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  width:100%;
  height:100%;
  min-height:100%;
  border:none;
  border-left: 5px solid var(--green-accent);
  box-shadow:
    0 2px 4px rgba(0,0,0,.04),
    0 8px 16px rgba(13,79,182,.07),
    0 24px 48px rgba(0,0,0,.11);
  transition:transform .35s ease, box-shadow .35s ease;
}

.card:hover{
  transform:translateY(-6px);
  box-shadow:
    0 4px 8px rgba(0,0,0,.05),
    0 16px 32px rgba(13,79,182,.12),
    0 40px 72px rgba(0,0,0,.16);
}

.card-image{
  width:100%;
  position:relative;
  overflow:hidden;
  background:#dfe7f3;
  aspect-ratio:4 / 3;
  min-height:280px;
}

.card-image img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center center;
  transition:transform .6s ease;
}

.card:hover .card-image img{
  transform:scale(1.08);
}


.card-body{
  flex:1 1 auto;
  padding:1.4rem 1.6rem 1.4rem;
  display:flex;
  flex-direction:column;
  justify-content:flex-start;
}

.card-body h3{
  margin-top:.4rem;
  margin-bottom:.8rem;
  font-size:1.35rem;
  color:var(--blue-dark);
}

.card-body .series-badge{
  margin-bottom:.85rem;
}

.card-body p{
  margin:0;
  line-height:1.6;
  color:var(--navy);
}

.card-body p + p{
  margin-top:.5rem;
}

.card-body p:last-child{
  margin-bottom:0;
}

.service-list{
  margin:.35rem 0 0;
  padding-left:1.1rem;
}

.service-list li{
  margin-bottom:.3rem;
  line-height:1.5;
}

.card-tags{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  margin-top:1rem;
}

.tag{
  display:inline-flex;
  align-items:center;
  padding:.38rem .7rem;
  border-radius:999px;
  background:#eef5ff;
  color:var(--blue-dark);
  font-size:.78rem;
  font-weight:600;
  border:1px solid rgba(13,79,182,.08);
}

/* Crop each image to its best focal point */
.structural-card .card-image img{
  object-position:65% top;
}

.scarwork-card .card-image img{
  object-position:center 80%;
}

/* overlay统一到底部 */
.card-overlay{
  position:absolute;
  inset:0;
  display:flex;
  align-items:flex-end;
  padding:1.25rem 1.4rem;
  background:
    linear-gradient(180deg, transparent 35%, rgba(5,15,40,.88) 100%),
    radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,.35) 100%);
}

/* ============================= */
/* START HERE */
/* ============================= */

.start-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1rem;
  margin-top:1.5rem;
}

.start-card{
  background:white;
  padding:1.35rem;
  border-radius:16px;
  box-shadow:0 8px 18px rgba(0,0,0,.08);
  border:1px solid rgba(15,58,138,.06);
}

.start-card h3{
  margin-top:.5rem;
  margin-bottom:.7rem;
  color:var(--blue-dark);
}

.start-icon{
  width:36px;
  height:36px;
  color:var(--blue-main);
  display:block;
}

/* ============================= */
/* SI SERIES */
/* ============================= */

.series-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-top:1.6rem;
  align-items:stretch;
}

.series-card{
  background:white;
  padding:1.8rem;
  border-radius:22px;
  box-shadow:
    0 2px 4px rgba(0,0,0,.04),
    0 8px 20px rgba(13,79,182,.08),
    0 24px 48px rgba(0,0,0,.10);
  border:none;
  display:flex;
  flex-direction:column;
  transition:transform .35s ease, box-shadow .35s ease;
}

.series-card:hover{
  transform:translateY(-6px);
  box-shadow:
    0 4px 8px rgba(0,0,0,.06),
    0 16px 32px rgba(13,79,182,.14),
    0 36px 64px rgba(0,0,0,.14);
}

.series-card.primary{
  background:linear-gradient(145deg, #2B7BE0 0%, var(--blue-main) 50%, var(--blue-dark) 100%);
  border-left:5px solid var(--green-accent);
  box-shadow:
    0 4px 8px rgba(0,0,0,.07),
    0 16px 32px rgba(13,79,182,.25),
    0 32px 64px rgba(13,79,182,.12);
}

.series-card.primary:hover{
  box-shadow:
    0 6px 12px rgba(0,0,0,.10),
    0 24px 48px rgba(13,79,182,.30),
    0 48px 80px rgba(0,0,0,.20);
}

.series-badge{
  display:inline-block;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:.3rem .75rem;
  border-radius:20px;
  margin-bottom:1rem;
  background:var(--green-accent);
  color:var(--navy);
}

.series-badge.secondary{
  background:rgba(13,79,182,.1);
  color:var(--blue-dark);
}

#services .card-body .series-badge{
  display:inline-flex;
  align-self:flex-start;
  background:var(--green-accent);
  color:var(--navy);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.08em;
  padding:.35rem 1rem;
  border-radius:999px;
  margin-bottom:.85rem;
  box-shadow:0 2px 8px rgba(126,217,87,.25);
}

.series-card h3{
  margin-top:0;
  margin-bottom:.8rem;
  color:var(--blue-dark);
}

/* ============================= */
/* ABOUT LAYOUT */
/* ============================= */

.section-content.about{
  display:flex;
  align-items:center;
  gap:2.5rem;
}

.about-photos{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:.65rem;
  flex-shrink:0;
  width:380px;
}

.about-photos img{
  width:100%;
  aspect-ratio:3/4;
  height:auto;
  object-fit:cover;
  object-position:center center;
  display:block;
  border-radius:12px;
  box-shadow:0 8px 18px rgba(0,0,0,.14);
}

/* Tom Myers — both faces from top */
.about-photos img:nth-child(2){
  object-position:center 30%;
}


.section-content.about > div{
  flex:1;
}

/* ============================= */
/* TESTIMONIALS */
/* ============================= */


.testimonial{
  margin:0;
  background:white;
  border-left:4px solid var(--green-accent);
  padding:1.2rem 1.25rem;
  border-radius:14px;
  box-shadow:0 8px 18px rgba(0,0,0,.07);
}

.testimonial p{
  margin:0 0 .6rem;
}

.testimonial footer{
  font-weight:600;
  color:#475569;
}

/* ============================= */
/* FAQ */
/* ============================= */

.faq-category{
  margin-bottom:3rem;
}

.faq-category h3{
  font-size:1.4rem;
  margin-bottom:1rem;
  color:var(--blue-dark);
}

details{
  background:white;
  border-radius:14px;
  margin-bottom:1rem;
  border:1px solid rgba(15,58,138,.08);
  box-shadow:0 4px 12px rgba(0,0,0,.06);
  overflow:hidden;
  transition:.25s ease;
}

details:hover{
  box-shadow:0 10px 22px rgba(0,0,0,.08);
}

summary{
  font-weight:700;
  cursor:pointer;
  padding:1.1rem 3.2rem 1.1rem 1.4rem;
  list-style:none;
  position:relative;
  font-size:1.02rem;
  line-height:1.4;
}

summary::-webkit-details-marker{
  display:none;
}

summary:after{
  content:"+";
  position:absolute;
  right:1.2rem;
  top:50%;
  transform:translateY(-50%);
  font-size:1.3rem;
  font-weight:300;
  line-height:1;
  transition:transform .2s ease, opacity .2s ease;
  opacity:.7;
}

details[open] summary:after{
  content:"×";
  opacity:1;
}

details p{
  padding:0 1.2rem 1rem 1.2rem;
  margin:0;
  color:#475569;
  line-height:1.65;
  font-size:.95rem;
}

details p + p{
  margin-top:.7rem;
}

details[open]{
  border:1px solid rgba(13,79,182,.18);
}

/* ============================= */
/* FAQ LAYOUT */
/* ============================= */

#faq{
  max-width:none;
  margin:0;
}

#faq h2{
  grid-column:1 / -1;
}

/* ============================= */
/* VIDEO */
/* ============================= */

.video-wrapper{
  display:flex;
  justify-content:center;
  margin-top:1rem;
}

.video-wrapper iframe{
  width:100%;
  max-width:720px;
  height:405px;
  border:0;
  border-radius:12px;
}

.yt-facade{
  position:relative;
  width:100%;
  max-width:720px;
  aspect-ratio:16/9;
  border-radius:12px;
  overflow:hidden;
  cursor:pointer;
  background:#000;
}

.yt-facade img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transition:opacity .2s;
}

.yt-facade:hover img{ opacity:.85; }

.yt-play{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background:none;
  border:none;
  cursor:pointer;
  padding:0;
}

.yt-play svg{
  width:68px;
  height:48px;
  filter:drop-shadow(0 2px 8px rgba(0,0,0,.4));
  transition:transform .15s;
}

.yt-facade:hover .yt-play svg{ transform:scale(1.1); }

/* ============================= */
/* FORM */
/* ============================= */

form{
  max-width:560px;
  margin-top:1.2rem;
  display:flex;
  flex-direction:column;
  gap:1rem;
}

label{
  font-weight:600;
  color:var(--navy);
  margin-bottom:-.4rem;
}

input,
textarea,
select{
  padding:.9rem;
  border-radius:8px;
  border:1px solid #ccd5e3;
  font-family:inherit;
  font-size:1rem;
  background:white;
  color:var(--navy);
}

input:focus,
textarea:focus,
select:focus{
  outline:none;
  border-color:var(--blue-main);
  box-shadow:0 0 0 3px rgba(13,79,182,.12);
}

.form-note{
  margin:0;
  font-size:.95rem;
  color:#475569;
}

/* ============================= */
/* FOOTER */
/* ============================= */

.site-footer{
  border-top:1px solid rgba(13,79,182,.15);
  background:#f3f8ff;
  padding:2.4rem 1.4rem 3rem;
}

.footer-inner{
  max-width:1120px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:3rem;
}

.footer-brand{
  margin-top:0;
  margin-bottom:.3rem;
  color:white;
  text-decoration:none;
}

.footer-inner p{
  margin:.2rem 0;
}

.footer-note{
  margin-top:1rem !important;
  max-width:720px;
  color:#475569;
  font-size:.95rem;
}

.footer-left{
  flex:1 1 auto;
}

.footer-right{
  display:flex;
  flex-direction:row;
  align-items:center;
  justify-content:center;
  gap:2rem;
  flex-shrink:0;
}

.footer-social{
  display:flex;
  align-items:center;
  gap:.5rem;
  margin-top:.8rem;
}

.footer-disclaimer{
  max-width:1120px;
  margin:1.5rem auto 0;
  padding:1rem 1.4rem 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:.85rem;
  color:rgba(255,255,255,.5);
  line-height:1.5;
}

.footer-logo{
  object-fit:contain;
  display:block;
}

.footer-logo--tfl{
  height:120px;
  width:120px;
}

.footer-tfl-logo{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.5rem;
}

.footer-tfl-icon{
  height:72px;
  width:72px;
  object-fit:contain;
  display:block;
}

.footer-tfl-name{
  font-size:.85rem;
  font-weight:700;
  letter-spacing:normal;
  color:#ffffff;
  text-align:center;
}

.footer-tfl-lab{
  color:var(--green-accent);
}

.footer-logo--atsi{
  height:90px;
  width:auto;
}

.footer-location{
  display:flex;
  align-items:flex-start;
  gap:.4rem;
  margin:.2rem 0;
}

.footer-location-label{
  white-space:nowrap;
  color:rgba(255,255,255,.8);
}

.footer-location-link{
  color:rgba(255,255,255,.85);
  text-decoration:none;
  font-size:.95rem;
  line-height:1.4;
}

.footer-location-link:hover{
  color:var(--green-accent);
  text-decoration:underline;
}

/* ============================= */
/* TABLET */
/* ============================= */

@media(max-width:1024px){

  .main-nav{
    left:50%;
    right:auto;
    transform:translateX(-50%);
  }

  .main-nav ul{
    padding:.65rem .85rem;
    gap:.35rem;
  }

  .main-nav a{
    padding:.5rem .8rem;
    font-size:.92rem;
  }

  .card-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:24px;
    align-items:stretch;
    grid-auto-rows:1fr;
  }

  .card-image{
    min-height:260px;
  }

  .card-overlay h3{
    font-size:1.45rem;
  }

  .card-body{
    padding:1.1rem;
  }

  .card-body p,
  .service-list li{
    font-size:.95rem;
    line-height:1.55;
  }

  .tag{
    padding:.32rem .6rem;
    font-size:.76rem;
  }

  #faq{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:28px;
  }

  .faq-category h3{
    font-size:1.25rem;
  }

  summary{
    font-size:.95rem;
  }

  .hero-title{
    font-size:3.5rem;
  }

  .hero-logo{
    width:132px;
  }

  .hero-intro{
    font-size:1.12rem;
    max-width:580px;
  }

  .about-photos{
    width:300px;
  }


  .start-grid,
  .series-grid{
    grid-template-columns:1fr;
  }
}

/* ============================= */
/* MOBILE */
/* ============================= */

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 1rem;
    right: 1rem;
    left: auto;
    transform: none;
    width: auto;
    max-width: none;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-left: auto;
  }

  .main-nav ul {
    display: none;
    flex-direction: column;
    gap: 0.45rem;
    margin-top: 0.65rem;
    padding: 0.75rem;
    border-radius: 20px;
    background: rgba(160, 195, 230, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.2);
  }

  .main-nav.is-open > ul {
    display: flex;
  }

  .submenu {
    position: static;
    transform: none;
    min-width: 0;
    width: 100%;
    border-radius: 12px;
    margin-top: .3rem;
    padding: .35rem .5rem;
    background: var(--blue-main);
    border: 1px solid rgba(126,217,87,.3);
    box-shadow: none;
  }

  .submenu li a {
    color: rgba(255,255,255,.9) !important;
    font-size: 0.95rem;
  }

  .submenu-toggle {
    width: 100%;
    padding: 0.85rem 1rem;
    font-size: 0.98rem;
    text-align: left;
    border-radius: 12px;
    color: var(--navy);
  }

  .submenu-toggle[aria-expanded="true"] {
    background: var(--green-accent);
    color: #05386b;
  }

  .main-nav a {
    width: 100%;
    padding: 0.85rem 1rem;
    font-size: 0.98rem;
    text-align: left;
    border-radius: 12px;
    color: var(--navy);
    font-weight: 600;
  }

  .main-nav.is-open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .main-nav.is-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .main-nav.is-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .hero {
    min-height:auto;
    padding:5.6rem 1.35rem 3.8rem;
  }

  .hero-content {
    max-width:560px;
    margin:0 auto;
    padding:0;
  }

  .hero-logo {
    width:92px;
    margin:0 auto .95rem;
  }

  .hero-title {
    font-size:clamp(1.95rem, 7.2vw, 2.55rem);
    line-height:1.04;
    letter-spacing:-0.028em;
    margin:0;
  }

  .hero-title .brand-accent {
    display:inline;
    margin-top:0;
  }

  .slogan {
    font-size:.88rem;
    line-height:1.42;
    max-width:none;
    white-space:normal;
    margin:1rem auto 0;
  }

  .hero-divider {
    width:96px;
    margin:1.05rem auto 0;
  }

  .hero-intro {
    font-size:.98rem;
    line-height:1.58;
    max-width:480px;
    margin:1.45rem auto 0;
  }

  .btn-cta {
    display:block;
    width:min(100%, 320px);
    margin:1.9rem auto 0;
    padding:1rem 1.5rem;
    font-size:1rem;
    border-radius:16px;
    text-align:center;
  }

  .section {
    padding:3.8rem 1.2rem;
  }

  .card-grid {
    grid-template-columns:1fr;
    gap:22px;
    align-items:stretch;
    grid-auto-rows:auto;
  }

  .card-image {
    min-height:220px;
    aspect-ratio:4 / 3;
  }

  .card-overlay {
    padding:1rem;
  }

  .card-overlay h3 {
    font-size:1.18rem;
  }

  .card-body {
    padding:1rem;
  }

  .card-body p,
  .service-list li {
    font-size:.92rem;
    line-height:1.55;
  }

  .card-tags {
    gap:.4rem;
  }

  .tag {
    padding:.28rem .52rem;
    font-size:.72rem;
  }

  .section-content.about {
    flex-direction:column;
    gap:24px;
  }

  .about-photos{
    width:100%;
    max-width:480px;
  }

  .about-photos img{
    height:auto;
  }

  .video-wrapper iframe {
    height:230px;
  }

  #faq {
    grid-template-columns:1fr;
    gap:22px;
  }
}

/* ============================= */
/* RETURN TO TOP BUTTON          */
/* ============================= */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--green-accent);
  color: #05386b;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease, background .2s ease;
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: white;
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ============================================= */
/* GLOBAL THEME — SINGLE SOURCE OF TRUTH         */
/* ============================================= */

/* Body and main — exact hero blue, no gaps */
body {
  background: var(--blue-dark);
}

html, body, main {
  background: linear-gradient(180deg, var(--blue-main) 0%, var(--blue-dark) 100%);
}

/* Blue sections */
#start-here,
#pricing,
#case-studies,
#faq {
  background: linear-gradient(180deg, var(--blue-main) 0%, var(--blue-dark) 100%);
}

/* Services matches hero bottom colour */
#services {
  background: var(--blue-dark);
}

/* Dividers — subtle white line */
.divider {
  border-top: 1px solid rgba(255,255,255,.12);
}

/* Green break line between every section */
.hero,
section {
  border-bottom: 2px solid var(--green-accent);
}

/* Remove any gap between hero and services */
.services-section {
  margin-top: 0;
}

/* ============================================= */
/* WHITE TEXT ON BLUE                            */
/* ============================================= */

.section h2,
.section h3,
.section p,
.section li,
.section-intro,
summary {
  color: white;
}

.section-intro {
  color: rgba(255,255,255,.85);
}

/* ============================================= */
/* CARDS                                         */
/* ============================================= */

.card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  box-shadow: 0 10px 26px rgba(0,0,0,.2);
}

.card-body p,
.service-list li {
  color: rgba(255,255,255,.9);
}

.start-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-left: 4px solid var(--green-accent);
}

.start-card h3 { color: var(--green-accent); }
.start-card p  { color: rgba(255,255,255,.88); }

.series-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
}

.series-card h3          { color: var(--green-accent); }
.series-card p,
.series-card li          { color: rgba(255,255,255,.88); }
.series-card.primary     { background: rgba(255,255,255,.13); border: 2px solid var(--green-accent); }

/* ============================================= */
/* TAGS                                          */
/* ============================================= */

.tag {
  background: rgba(126,217,87,.15);
  color: var(--green-accent);
  border: 1px solid rgba(126,217,87,.3);
}

/* ============================================= */
/* FAQ — 2 COLUMN GRID                           */
/* ============================================= */

/* The grid lives on the inner .section div inside <section id="faq"> */
#faq > .section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  max-width: 1100px;
  margin: auto;
  padding: 5rem 1.4rem;
}

#faq > .section > h2 {
  grid-column: 1 / -1;
  color: white;
}

.faq-category h3 {
  color: white;
  border-left: 4px solid var(--green-accent);
  padding-left: .85rem;
  font-size: 1.15rem;
  margin-bottom: 1.2rem;
}

details {
  background: rgba(255,255,255,.11);
  border: 1px solid rgba(255,255,255,.18);
}

details[open] {
  background: rgba(255,255,255,.16);
  border-color: rgba(126,217,87,.5);
}

details[open] summary { color: var(--green-accent); }
details p             { color: rgba(255,255,255,.85); }
summary               { color: white; }
summary:after         { color: var(--green-accent); font-size: 1.5rem; opacity: 1; }

/* ============================================= */
/* TESTIMONIAL                                   */
/* ============================================= */

.testimonial {
  background: rgba(255,255,255,.08);
  border-left: 4px solid var(--green-accent);
}

.testimonial p,
.testimonial footer { color: rgba(255,255,255,.9); }

/* ============================================= */
/* ABOUT                                         */
/* ============================================= */

.section-content.about div h2,
.section-content.about div p { color: white; }

.section-content.about div p {
  line-height: 1.75;
  margin: 0;
  color: rgba(255,255,255,.88);
}

/* First intro paragraph */
.section-content.about > div > p:first-of-type {
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--green-accent) !important;
  margin-bottom: 1.4rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid rgba(255,255,255,.15);
}

/* Labeled about points */
.about-point {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: .9rem 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.about-point--who {
  border-bottom: none;
  padding-bottom: 0;
}

.about-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--green-accent);
}

/* ============================================= */
/* FORM                                          */
/* ============================================= */

label { color: rgba(255,255,255,.9); }

input, textarea, select {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  color: white;
}

input::placeholder,
textarea::placeholder { color: rgba(255,255,255,.4); }

input:focus,
textarea:focus,
select:focus {
  border-color: var(--green-accent);
  box-shadow: 0 0 0 3px rgba(126,217,87,.2);
  outline: none;
}

select option { background: var(--blue-dark); color: white; }

.form-note { color: rgba(255,255,255,.65); }

form .btn-cta {
  align-self: flex-start;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

/* ============================================= */
/* FOOTER                                        */
/* ============================================= */

.site-footer {
  background: var(--blue-dark);
  border-top: 2px solid var(--green-accent);
}

.footer-inner p,
.footer-inner a    { color: rgba(255,255,255,.8); }

.social-link {
  display: inline-flex;
  align-items: center;
  color: rgba(255,255,255,.7);
  transition: color .2s ease, transform .2s ease;
}

.social-link:hover {
  color: var(--green-accent);
  transform: translateY(-2px);
}
.footer-brand,
.footer-brand strong { color: white !important; text-decoration: none !important; }
.footer-note       { color: rgba(255,255,255,.6); }

/* ============================================= */
/* RESPONSIVE FAQ                                */
/* ============================================= */

@media (max-width: 1024px) {
  #faq > .section {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (max-width: 768px) {
  #faq > .section {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .case-study-grid {
    grid-template-columns: 1fr;
  }
}



/* ============================================= */
/* ALL SECTIONS — UNIFORM HERO BLUE              */
/* ============================================= */

/* Silver alternating sections */
#services,
#si-series,
#about,
#contact {
  background: linear-gradient(180deg, #F2F6FF 0%, #E8EFFF 100%) !important;
}

/* ============================================= */
/* CASE STUDIES                                  */
/* ============================================= */

.case-study-grid {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.case-study-card {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.case-study-img {
  width: 100%;
  max-width: 100%;
  border-radius: 0;
  box-shadow: 0 8px 24px rgba(0,0,0,.10);
  display: block;
}

.case-study-tag {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: rgba(255,255,255,.85);
  border-left: 3px solid var(--green-accent);
  padding-left: .6rem;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .case-study-grid {
    grid-template-columns: 1fr;
  }
}

.site-footer {
  background: var(--blue-dark);
  border-top: 2px solid var(--green-accent);
}

/* ============================================= */
/* FAQ — FIX BOX & RESTORE 2-COLUMN GRID        */
/* ============================================= */

/* Remove any border/padding on the outer section */
#faq {
  border: none;
  box-shadow: none;
  padding: 0;
  margin: 0;
  max-width: none;
  width: 100%;
}

/* Grid on the inner .section div */
#faq > .section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 1.4rem;
  border: none;
  box-shadow: none;
  background: transparent;
}

#faq > .section > h2 {
  grid-column: 1 / -1;
  color: white;
  margin: 0 0 1rem;
}

@media (max-width: 768px) {
  #faq > .section {
    grid-template-columns: 1fr;
    gap: 22px;
  }
}

/* ============================================= */
/* FAQ GRID — FINAL OVERRIDE                     */
/* ============================================= */

#faq > .section {
  display: grid !important;
  grid-template-columns: repeat(2, 1fr) !important;
  gap: 2.5rem !important;
  max-width: 1120px !important;
  width: 100% !important;
  margin: 0 auto !important;
  padding: 5rem 2.5rem !important;
  box-sizing: border-box !important;
}

#faq > .section > h2 {
  grid-column: 1 / -1 !important;
}

.faq-category {
  width: 100%;
  min-width: 0;
}

@media (max-width: 768px) {
  #faq > .section {
    grid-template-columns: 1fr !important;
    padding: 3rem 1.2rem !important;
  }
}

@media (max-width: 768px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }

  .footer-right {
    width: 100%;
    justify-content: center;
    align-items: flex-start;
    gap: 2rem;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(255,255,255,.12);
  }

  .footer-logo--tfl {
    height: 70px;
    width: 70px;
  }

  .footer-logo--atsi {
    height: 56px;
  }

  .footer-tfl-icon {
    height: 56px;
    width: 56px;
  }

  .footer-location {
    flex-direction: column;
    gap: .1rem;
  }

  .footer-location-link {
    font-size: .88rem;
    line-height: 1.5;
  }

  .footer-disclaimer {
    text-align: center;
    padding: 1rem 1.2rem 0;
  }
}

/* ============================================= */
/* SILVER-BLUE SECTION OVERRIDES                 */
/* ============================================= */

/* Dividers on silver-blue */
#services .divider,
#si-series .divider,
#about .divider,
#contact .divider {
  border-top-color: rgba(13,79,182,.15);
}

/* Text on near-white sections */
#services .section h2,
#services .section h3,
#services .section p,
#services .section li,
#si-series .section h2,
#si-series .section h3,
#si-series .section p,
#si-series .section li,
#si-series .section-intro,
#contact .section h2,
#contact .section-intro { color: var(--navy); }

/* --- Services --- */
#services .card {
  background: #1a3f8b !important;
  border: 1px solid rgba(255,255,255,.22) !important;
  border-left: 5px solid var(--green-accent) !important;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.15),
    0 8px 24px rgba(8,58,138,.22),
    0 32px 56px rgba(0,0,0,.14) !important;
}
#services .card-image {
  aspect-ratio: 3 / 2 !important;
  min-height: unset !important;
}
.structural-card .card-image img {
  object-position: center top;
}
#services .card-body h3 { color: #fff !important; }
#services .card-body p,
#services .service-list li { color: rgba(255,255,255,.88) !important; }
#services .card-body strong { color: var(--green-accent) !important; }
#services .tag {
  background: rgba(255,255,255,.12) !important;
  color: rgba(255,255,255,.9) !important;
  border: 1px solid rgba(255,255,255,.2) !important;
}

/* --- SI Series --- */
#si-series .series-card:not(.primary) {
  background: white;
  border: none;
}
#si-series .series-card:not(.primary) h3 { color: var(--blue-dark); }
#si-series .series-card:not(.primary) p,
#si-series .series-card:not(.primary) li { color: var(--navy); }
#si-series .series-badge.secondary {
  background: rgba(13,79,182,.1);
  color: var(--blue-dark);
}

/* primary card — dark gradient stays intact */
#si-series .series-card.primary {
  background: var(--blue-main) !important;
  border: 1px solid rgba(255,255,255,.22) !important;
  border-left: 5px solid var(--green-accent) !important;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.15),
    0 8px 24px rgba(8,58,138,.22),
    0 32px 56px rgba(0,0,0,.14) !important;
}
#si-series .series-card.primary h3 { color: white !important; }
#si-series .series-card.primary p,
#si-series .series-card.primary li { color: rgba(255,255,255,.88) !important; }
#si-series .series-card.primary strong { color: var(--green-accent) !important; }
#si-series .series-card.primary .series-badge {
  background: var(--green-accent);
  color: var(--navy);
}

/* --- About (silver background overrides) --- */
#about .section-content.about div h2 { color: var(--navy) !important; }
#about .section-content.about div p { color: var(--navy) !important; }
#about .section-content.about > div > p:first-of-type {
  color: var(--blue-dark) !important;
  border-bottom-color: rgba(13,79,182,.15) !important;
}
#about .about-point { border-bottom-color: rgba(13,79,182,.1); }
#about .about-label { color: var(--blue-dark) !important; }

/* --- Contact (silver background overrides) --- */
#contact label { color: var(--navy); }

#contact input,
#contact textarea,
#contact select {
  background: white;
  border: 1px solid #ccd5e3;
  color: var(--navy);
}

#contact input::placeholder,
#contact textarea::placeholder { color: #94a3b8; }

#contact input:focus,
#contact textarea:focus,
#contact select:focus {
  border-color: var(--blue-main);
  box-shadow: 0 0 0 3px rgba(13,79,182,.12);
}

#contact select option { background: white; color: var(--navy); }
#contact .form-note { color: #475569; }