:root{
  --bg:#f7f5ef;
  --ink:#1f2933;
  --muted:#5f6b7a;
  --line:#d8dee8;
  --card:#ffffff;
  --blue:#00274c;
  --blue2:#1d4e89;
  --maize:#ffcb05;
  --maize-soft:#fff4bf;
  --soft:#eef3f8;
  --soft2:#fff8dc;
  --shadow:0 16px 38px rgba(0,39,76,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Georgia,"Times New Roman",serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  font-size: 20px;
}
a{color:var(--blue2);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{
  position:sticky;top:0;z-index:20;
  display:flex;justify-content:space-between;align-items:center;gap:24px;
  padding:16px 6vw;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);
  border-bottom:4px solid var(--maize);
  box-shadow:0 4px 18px rgba(0,39,76,.06);
}
.brand{
  font-family:Arial,Helvetica,sans-serif;
  font-weight:800;color:var(--blue);letter-spacing:-.02em;
}
.site-header nav{display:flex;gap:18px;flex-wrap:wrap}
.site-header nav a{
  font-family:Arial,Helvetica,sans-serif;
  color:var(--blue);font-size:.94rem;font-weight:600;
}
.hero{
  display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center;
  padding:86px 6vw 78px;
  background:
    radial-gradient(circle at 90% 10%, rgba(255,203,5,.30), transparent 30%),
    linear-gradient(135deg,#ffffff 0%,#eef3f8 52%,#fff8dc 100%);
  border-bottom:1px solid var(--line);
}
.eyebrow{
  font-family:Arial,Helvetica,sans-serif;
  text-transform:uppercase;letter-spacing:.14em;color:var(--blue2);font-weight:800;font-size:.76rem;
}
h1,h2,h3{line-height:1.14;margin:0 0 16px;letter-spacing:-.025em;color:var(--blue)}
h1{font-size:clamp(2.6rem,5.7vw,5.1rem);max-width:900px}
h2{font-size:clamp(2rem,3.8vw,3.05rem)}
h3{font-size:1.28rem}.lead{font-size:1.25rem;color:#34465c;max-width:730px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.button{
  font-family:Arial,Helvetica,sans-serif;
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 18px;border-radius:4px;border:1px solid var(--blue);
  background:#fff;color:var(--blue);font-weight:700;
  box-shadow:0 8px 18px rgba(0,39,76,.08);
}
.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.button.primary:hover{background:#001f3d;text-decoration:none}.button:hover{text-decoration:none;background:var(--maize-soft)}
.section{padding:74px 6vw}.section.alt{background:#eef3f8}.section-intro{max-width:820px;color:var(--muted);font-size:1.1rem}
.two-col{display:grid;grid-template-columns:.9fr 1.1fr;gap:42px}.steps{display:grid;gap:14px}
.steps div,.card,.video-tile,.accordion details{
  background:var(--card);border:1px solid var(--line);border-left:5px solid var(--maize);
  border-radius:8px;padding:22px;box-shadow:var(--shadow)
}
.steps strong{display:block;margin-bottom:6px;color:var(--blue)}.steps span{color:var(--muted)}
.cards{display:grid;gap:18px;margin-top:28px}.cards.three{grid-template-columns:repeat(3,1fr)}.card p{color:var(--muted)}
.figure{margin:28px 0;background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px;box-shadow:var(--shadow)}
.figure img{width:100%;display:block;border-radius:6px;background:#fff}.figure.wide img{max-height:780px;object-fit:contain}
.figure figcaption{font-size:.95rem;color:var(--muted);margin-top:10px}
.video-card{
  background:linear-gradient(180deg,#ffffff,#f8fafc);
  border:1px solid var(--line);border-top:6px solid var(--maize);
  border-radius:10px;padding:16px;box-shadow:0 22px 52px rgba(0,39,76,.18)
}
.intro-video{width:100%;aspect-ratio:16/9;display:block;border-radius:6px;background:#000;box-shadow:inset 0 0 0 1px rgba(255,255,255,.15)}
.video-placeholder{aspect-ratio:16/9;border-radius:6px;background:linear-gradient(135deg,#00274c,#1d4e89);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:22px;color:#fff;font-weight:800}
.video-placeholder small{font-weight:500;color:#fff4bf;max-width:360px}.video-placeholder.small{font-size:1rem;aspect-ratio:16/9}
.results-grid 
.result-card 
.result-card img 
.code-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}.results-grid,.code-grid{grid-template-columns:repeat(2,1fr)}
.video-tile p{color:var(--muted)}.accordion{display:grid;gap:12px;margin-top:28px}.accordion summary{cursor:pointer;font-weight:800;color:var(--blue)}.accordion p{color:var(--muted)}
pre{overflow-x:auto;background:#00274c;color:#f7f5ef;border-radius:8px;padding:18px;font-size:.92rem}.citation pre{max-width:880px}.note{color:var(--muted)}
.footer{padding:32px 6vw;border-top:4px solid var(--maize);display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;color:var(--muted);background:#fff}
@media(max-width:900px){.hero,.two-col,.cards.three,.video-grid,.results-grid,.code-grid{grid-template-columns:1fr}.site-header{align-items:flex-start;flex-direction:column}.section{padding:54px 5vw}.hero{padding:56px 5vw}}
.featured-video-section {
    max-width: 1300px;
    margin: 80px auto;
    padding: 0 24px;
}

.featured-video-header {
    text-align: center;
    margin-bottom: 32px;
}

.featured-badge {
    display: inline-block;
    background: #FFCB05;
    color: #00274C;
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 8px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
}

.featured-video-header h2 {
    font-size: 2.7rem;
    color: #00274C;
    margin-bottom: 16px;
    font-weight: 700;
}

.featured-video-header p {
    max-width: 820px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.7;
    color: #555;
}

.featured-video-card {
    position: relative;
    border-radius: 28px;
    overflow: hidden;

    background: #000;

    box-shadow:
        0 20px 50px rgba(0, 39, 76, 0.18),
        0 6px 18px rgba(0,0,0,0.08);

    transition: transform 0.35s ease;
}

.featured-video-card:hover {
    transform: translateY(-4px);
}

.featured-video {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 9;
}

.evidence-section {
    max-width: 1250px;
    margin: 90px auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    max-width: 850px;
    margin: 0 auto 48px;
}

.section-kicker {
    display: inline-block;
    color: #00274C;
    background: #FFCB05;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 7px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
}

.section-header h2 {
    color: #00274C;
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.section-header p {
    color: #555;
    font-size: 1.08rem;
    line-height: 1.7;
}

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

.evidence-card {
    background: #ffffff;
    border: 1px solid rgba(0, 39, 76, 0.12);
    border-radius: 22px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0, 39, 76, 0.08);
}

.evidence-image {
    height: 330px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 22px;
    background: #f7f9fb;
    border-radius: 16px;
    overflow: hidden;
}

.evidence-image img {
    max-width: 100%;
    max-height: 310px;
    object-fit: contain;
    display: block;
}

.evidence-text h3 {
    color: #00274C;
    font-size: 1.35rem;
    margin-bottom: 10px;
}

.evidence-text p {
    color: #4b4b4b;
    font-size: 1rem;
    line-height: 1.65;
}

/* Mobile */
@media (max-width: 850px) {
    .evidence-grid {
        grid-template-columns: 1fr;
    }

    .evidence-image {
        height: auto;
        padding: 12px;
    }

    .evidence-image img {
        max-height: none;
    }
}