: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;
}

body{
  margin:0;
  font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  background:linear-gradient(180deg,#f8fbff 0%,#eef5ff 100%);
  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:1rem;
  right:1rem;
  z-index:1000;
}

.main-nav ul{
  list-style:none;
  margin:0;
  padding:.75rem 1rem;
  display:flex;
  gap:.45rem;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.45);
  border-radius:18px;
  box-shadow:0 12px 30px rgba(15,23,42,.12);
}

.main-nav li{
  position:relative;
}

.main-nav a{
  display:block;
  padding:.55rem .95rem;
  text-decoration:none;
  font-weight:600;
  color:var(--navy);
  border-radius:10px;
  font-size:.95rem;
  transition:background .2s ease, color .2s ease, transform .2s ease;
}

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

.nav-toggle{
  display:none;
  width:48px;
  height:48px;
  border:none;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.45);
  border-radius:16px;
  box-shadow:0 12px 30px rgba(15,23,42,.12);
  padding:0;
  cursor:pointer;
}

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

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

.hero{
  background:
    radial-gradient(circle at 50% 10%, rgba(255,255,255,.08), transparent 28%),
    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;
}

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

.hero-logo{
  width:160px;
  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;
}

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

.slogan{
  font-size:clamp(1.25rem,2vw,1.8rem);
  margin:1rem auto 0;
  max-width:28ch;
  opacity:.96;
}

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

.hero-intro{
  margin:1.7rem auto 0;
  font-size:clamp(1.05rem,1.5vw,1.3rem);
  max-width:720px;
  line-height:1.75;
}

.btn-cta{
  display:inline-block;
  margin-top:2.2rem;
  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;
}

/* ============================= */
/* 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:760px;
  color:#334155;
  margin:0;
}

.divider{
  border-top:1px solid var(--soft-border);
}

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

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

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

.card{
  background:white;
  border-radius:18px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  height:100%;
  border:1px solid rgba(15,58,138,.06);
  box-shadow:0 10px 26px rgba(0,0,0,.10);
  transition:transform .2s ease, box-shadow .2s ease;
}

.card:hover{
  transform:translateY(-4px);
  box-shadow:0 16px 32px rgba(0,0,0,.12);
}

.card-image{
  width:100%;
  height:240px;
  position:relative;
  overflow:hidden;
  background:#dfe7f3;
}

.card-image img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center center;
  transition:transform .35s ease;
}

.card:hover .card-image img{
  transform:scale(1.05);
}

.card-overlay{
  position:absolute;
  inset:auto 0 0 0;
  padding:1.25rem 1.4rem;
  background:linear-gradient(180deg,transparent 0%,rgba(9,24,58,.78) 100%);
  color:white;
}

.card-overlay h3{
  margin:0;
  font-size:1.65rem;
  line-height:1.1;
  font-weight:700;
  color:white;
  letter-spacing:-0.02em;
}

.card-body{
  flex-grow:1;
  padding:1.35rem 1.4rem 1.5rem;
  display:flex;
  flex-direction:column;
}

.card-body p{
  margin-top:0;
}

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

.service-list{
  margin:.4rem 0 0;
  padding-left:1.15rem;
}

.service-list li{
  margin-bottom:.45rem;
  line-height:1.6;
}

.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);
}

/* ============================= */
/* 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:0;
  margin-bottom:.7rem;
  color:var(--blue-dark);
}

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

.series-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  margin-top:1.6rem;
}

.series-card{
  background:white;
  padding:1.6rem;
  border-radius:16px;
  box-shadow:0 8px 20px rgba(0,0,0,.08);
  border:1px solid rgba(15,58,138,.06);
}

.series-card.primary{
  border:2px solid var(--blue-main);
  box-shadow:0 10px 24px rgba(13,79,182,.14);
}

.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;
}

.section-content.about img{
  width:360px;
  height:420px;
  object-fit:cover;
  object-position:center;
  border-radius:16px;
  box-shadow:0 10px 22px rgba(0,0,0,.14);
}

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

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

.testimonial-grid{
  margin-top:1.4rem;
  margin-bottom:1.4rem;
}

.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:.9rem;
  border:1px solid rgba(15,58,138,.06);
  box-shadow:0 6px 14px rgba(0,0,0,.05);
  overflow:hidden;
  transition:.25s ease;
}

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

summary{
  font-weight:600;
  cursor:pointer;
  padding:1rem 1.2rem 1rem 2.4rem;
  list-style:none;
  position:relative;
  font-size:1rem;
}

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

summary:before{
  content:"▾";
  position:absolute;
  left:1rem;
  font-size:.9rem;
  transition:transform .2s ease;
}

details[open] summary:before{
  transform:rotate(180deg);
}

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{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:40px;
  max-width:1100px;
  margin:auto;
}

#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-radius:12px;
}

/* ============================= */
/* 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 var(--soft-border);
  background:#f3f8ff;
  padding:2.4rem 1.4rem 3rem;
}

.footer-inner{
  max-width:1120px;
  margin:0 auto;
}

.footer-brand{
  margin-top:0;
  margin-bottom:.3rem;
  color:var(--blue-dark);
}

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

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

/* ============================= */
/* 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:start;
  }

  .card-image{
    height:220px;
  }

  .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;
  }

  .section-content.about img{
    width:300px;
    height:360px;
  }

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

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

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 1rem;
    left: 1rem;
    right: 1rem;
    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(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.14);
  }

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

  .main-nav a {
    width: 100%;
    padding: 0.85rem 1rem;
    font-size: 0.98rem;
    text-align: left;
    border-radius: 12px;
  }

  .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;
    white-space:nowrap;
  }

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

  .slogan {
    font-size:.98rem;
    line-height:1.42;
    max-width:24ch;
    margin:1rem auto 0;
  }

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

  .hero-intro {
    font-size:.98rem;
    line-height:1.58;
    max-width:31ch;
    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;
  }

  .card-image {
    height:190px;
  }

  .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;
  }

  .section-content.about img {
    width:100%;
    max-width:440px;
    height:300px;
  }

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

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