:root {
  --navy: #06192b;
  --navy-2: #0b2a43;
  --navy-3: #123a55;
  --blue: #0a4fa3;
  --blue-dark: #073b7a;
  --blue-soft: #eaf2fa;
  --cyan: #b9d9f0;
  --ink: #152333;
  --muted: #607080;
  --line: #dbe4ea;
  --paper: #f5f7f8;
  --warm: #f1eee9;
  --white: #ffffff;
  --green: #2ebc83;
  --shadow: 0 28px 80px rgba(7, 27, 45, 0.13);
  --shadow-soft: 0 14px 40px rgba(7, 27, 45, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--white); color: var(--ink); font-family: Inter, Manrope, "Segoe UI", Arial, sans-serif; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { color: var(--navy); font-weight: 760; line-height: 1.08; letter-spacing: -0.042em; }
p { color: var(--muted); }
button, input { font: inherit; }
.container { width: min(calc(100% - 48px), 1220px); margin-inline: auto; }
.section { padding: 116px 0; }

.trust-bar { position: relative; z-index: 80; background: var(--navy); color: #cbd9e1; font-size: 0.73rem; letter-spacing: 0.03em; }
.trust-bar-inner { min-height: 34px; display: flex; align-items: center; justify-content: center; gap: 10px; }
.trust-bar strong { color: #fff; }
.trust-bar-inner > span:last-child::before { content: "\00b7"; margin-right: 10px; color: #7691a3; }
.trust-dot, .status-dot { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(46, 188, 131, 0.13); }

.site-header { position: sticky; top: 0; z-index: 70; border-bottom: 1px solid rgba(219, 228, 234, 0.9); background: rgba(255, 255, 255, 0.94); backdrop-filter: blur(18px); }
.header-inner { height: 78px; display: flex; align-items: center; gap: 28px; }
.brand { width: 192px; flex: 0 0 auto; }
.brand img { width: 100%; height: auto; object-fit: contain; }
.desktop-nav { display: flex; align-items: center; justify-content: center; gap: 25px; margin-left: auto; font-size: 0.82rem; font-weight: 720; }
.desktop-nav a { position: relative; color: #324454; transition: color 0.2s; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 2px; background: var(--blue); transition: right 0.2s; }
.desktop-nav a:hover { color: var(--blue-dark); }
.desktop-nav a:hover::after { right: 0; }
.button { min-height: 51px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 13px 21px; border: 1px solid transparent; border-radius: 8px; background: var(--blue); color: #fff; font-weight: 780; letter-spacing: -0.01em; box-shadow: 0 14px 35px rgba(10, 79, 163, 0.22); cursor: pointer; transition: transform 0.2s, background 0.2s, box-shadow 0.2s; }
.button:hover { transform: translateY(-2px); background: var(--blue-dark); box-shadow: 0 17px 38px rgba(0, 111, 186, 0.28); }
.button-small { min-height: 42px; padding: 9px 15px; font-size: 0.78rem; }
.header-cta { margin-left: 4px; }
.mobile-menu { display: none; margin-left: auto; }
.mobile-menu summary { width: 42px; height: 42px; display: grid; place-content: center; gap: 5px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; list-style: none; }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu summary span { width: 19px; height: 2px; display: block; background: var(--navy); }
.mobile-menu nav { position: absolute; top: 78px; left: 0; right: 0; display: grid; gap: 3px; padding: 18px 24px 24px; border-bottom: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-soft); }
.mobile-menu nav > a:not(.button) { padding: 10px 3px; border-bottom: 1px solid #eef2f4; color: var(--navy); font-weight: 700; }

.hero { min-height: 720px; position: relative; isolation: isolate; display: flex; align-items: center; overflow: hidden; background: var(--navy); }
.home-v3 .hero { padding: 0; }
.home-v3 .hero::before { content: none; }
.hero-image, .hero-overlay { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-image { z-index: -3; object-fit: cover; object-position: center; }
.hero-overlay { z-index: -2; background: linear-gradient(90deg, rgba(5, 20, 34, 0.99) 0%, rgba(5, 20, 34, 0.94) 43%, rgba(5, 20, 34, 0.68) 64%, rgba(5, 20, 34, 0.26) 100%); }
.hero::after { content: ""; position: absolute; z-index: -1; inset: 0; opacity: 0.11; background-image: linear-gradient(rgba(255,255,255,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.18) 1px, transparent 1px); background-size: 62px 62px; mask-image: linear-gradient(90deg, #000, transparent 68%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(380px, 0.72fr); gap: 84px; align-items: center; padding-top: 76px; padding-bottom: 82px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--blue-dark); font-size: 0.7rem; font-weight: 850; letter-spacing: 0.135em; text-transform: uppercase; }
.eyebrow > span { width: 23px; height: 2px; display: inline-block; background: var(--blue); }
.eyebrow.light { color: #98cbe7; }
.hero-copy h1 { max-width: 730px; margin-bottom: 25px; color: #fff; font-size: clamp(3.8rem, 6.5vw, 6.45rem); font-weight: 720; }
.hero-copy h1 em { display: block; color: var(--cyan); font: inherit; font-style: normal; letter-spacing: -0.055em; }
.hero-lead { max-width: 705px; margin-bottom: 30px; color: #c0d0da; font-size: 1.08rem; line-height: 1.75; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--navy); font-size: 0.84rem; font-weight: 800; }
.text-link span { color: var(--blue); }
.light-link { color: #fff; }
.hero-checks { display: flex; flex-wrap: wrap; gap: 17px 23px; margin: 32px 0 0; padding: 25px 0 0; border-top: 1px solid rgba(255,255,255,.14); list-style: none; color: #b9cbd6; font-size: 0.77rem; }
.check { width: 21px; height: 21px; display: inline-grid; flex: 0 0 auto; place-items: center; border-radius: 50%; background: rgba(10, 79, 163, 0.16); color: var(--cyan); font-size: 0.7rem; font-weight: 900; }
.hero-checks li { display: inline-flex; align-items: center; gap: 8px; }
.hero-card { align-self: end; overflow: hidden; border: 1px solid rgba(255,255,255,.22); border-radius: 16px; background: rgba(255,255,255,.96); box-shadow: 0 35px 85px rgba(0,0,0,.27); backdrop-filter: blur(12px); }
.hero-card-top { min-height: 49px; display: flex; align-items: center; gap: 10px; padding: 0 18px; border-bottom: 1px solid var(--line); background: #eef3f6; color: var(--navy); font-size: 0.72rem; font-weight: 780; }
.hero-card-top b { margin-left: auto; color: #8a9aa6; font-size: 0.65rem; letter-spacing: .12em; }
.hero-card-body { padding: 23px; }
.mini-label { margin-bottom: 12px; color: #82909b; font-size: 0.65rem; font-weight: 850; letter-spacing: 0.11em; text-transform: uppercase; }
.management-line { display: grid; grid-template-columns: 40px 1fr auto; gap: 12px; align-items: center; margin-top: 8px; padding: 11px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.management-line.active { border-color: rgba(10,79,163,.45); background: var(--blue-soft); box-shadow: inset 3px 0 var(--blue); }
.management-line > b { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 7px; background: var(--navy); color: #fff; font-size: 0.67rem; letter-spacing: .06em; }
.management-line.active > b { background: var(--blue); }
.management-line strong, .management-line small { display: block; }
.management-line strong { color: var(--navy); font-size: 0.81rem; line-height: 1.3; }
.management-line small { margin-top: 2px; color: #71818d; font-size: 0.65rem; line-height: 1.35; }
.management-line > i { width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font-size: 0.63rem; font-style: normal; }
.engineer-seal { display: flex; align-items: center; gap: 11px; margin-top: 18px; padding: 13px; border-radius: 10px; background: var(--navy); }
.seal-monogram { width: 43px; height: 43px; display: grid; flex: 0 0 auto; place-items: center; border: 1px solid rgba(185,217,240,.45); border-radius: 50%; background: rgba(10,79,163,.16); color: var(--cyan); font-family: inherit; font-size: 0.9rem; font-weight: 800; }
.engineer-seal small, .engineer-seal strong { display: block; }
.engineer-seal small { color: #7f9aab; font-size: 0.59rem; letter-spacing: .09em; text-transform: uppercase; }
.engineer-seal strong { color: #fff; font-size: 0.72rem; }

.proof-strip { position: relative; z-index: 2; border-bottom: 1px solid var(--line); background: #fff; }
.proof-grid { min-height: 102px; display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-grid > div { display: flex; align-items: center; justify-content: center; gap: 13px; border-right: 1px solid var(--line); }
.proof-grid > div:first-child { border-left: 1px solid var(--line); }
.proof-grid strong { color: var(--blue-dark); font-family: inherit; font-size: 1.45rem; font-weight: 800; }
.proof-grid span { color: #526372; font-size: 0.74rem; font-weight: 720; }

.section-heading { margin-bottom: 52px; }
.section-heading h2, .engineer-copy h2, .comparison-copy h2, .faq-grid h2, .quote-copy h2 { margin-bottom: 0; font-size: clamp(2.45rem, 4.7vw, 4.45rem); }
.split-heading { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .65fr); gap: 95px; align-items: end; }
.split-heading > p, .heading-aside > p { margin-bottom: 4px; font-size: 0.98rem; line-height: 1.8; }
.heading-aside .text-link { margin-top: 16px; }
.services-section { background: #fff; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.service-card { min-height: 388px; position: relative; padding: 30px; overflow: hidden; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; transition: transform .25s, box-shadow .25s, z-index .25s; }
.service-card::before { content: ""; position: absolute; inset: auto -40px -90px auto; width: 180px; height: 180px; border-radius: 50%; background: var(--blue-soft); opacity: 0; transition: opacity .25s; }
.service-card:hover { z-index: 2; transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card:hover::before { opacity: 1; }
.service-number { color: #9aa8b2; font-size: 0.65rem; font-weight: 850; letter-spacing: .12em; }
.service-symbol { position: relative; width: 79px; height: 64px; margin: 27px 0 36px; }
.service-symbol i { position: absolute; border: 2px solid var(--blue); background: rgba(10,79,163,.08); }
.service-symbol i:first-child { inset: 13px 8px 7px 8px; }
.service-symbol i:nth-child(2) { left: 0; top: 6px; width: 58px; height: 2px; border: 0; background: var(--blue); transform: rotate(-25deg); transform-origin: left; }
.service-symbol i:nth-child(3) { right: 2px; top: 2px; width: 19px; height: 19px; border-radius: 50%; }
.service-card:nth-child(2) .service-symbol i:first-child, .service-card:nth-child(5) .service-symbol i:first-child { border-radius: 50%; }
.service-card h3 { min-height: 52px; margin-bottom: 13px; font-size: 1.35rem; }
.service-card > p { min-height: 89px; margin-bottom: 16px; font-size: 0.84rem; line-height: 1.7; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 22px; }
.tag-row span { padding: 4px 8px; border-radius: 4px; background: var(--paper); color: #687986; font-size: 0.61rem; font-weight: 720; }
.card-link, .model-body a, .article-body a { position: relative; z-index: 1; display: inline-flex; gap: 9px; color: var(--navy); font-size: .75rem; font-weight: 820; }
.card-link span, .model-body a span, .article-body a span { color: var(--blue); }

.engineer-section { padding: 120px 0; position: relative; overflow: hidden; background: var(--navy); }
.engineer-section::before { content: "IC"; position: absolute; right: -30px; top: -105px; color: rgba(255,255,255,.025); font-family: inherit; font-size: 32rem; font-weight: 850; line-height: 1; }
.engineer-grid { position: relative; display: grid; grid-template-columns: minmax(360px, .86fr) minmax(0, 1.14fr); gap: 100px; align-items: center; }
.engineer-visual { position: relative; }
.engineer-visual > img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 4px; box-shadow: 25px 25px 0 rgba(98,200,255,.09); }
.visual-caption { position: absolute; left: 25px; right: -45px; bottom: 25px; display: flex; align-items: center; gap: 14px; padding: 16px; border: 1px solid rgba(255,255,255,.13); border-radius: 8px; background: rgba(7,27,45,.91); backdrop-filter: blur(14px); }
.visual-caption strong, .visual-caption small { display: block; }
.visual-caption strong { color: #fff; font-size: .8rem; }
.visual-caption small { color: #8da7b8; font-size: .67rem; }
.engineer-copy h2 { max-width: 780px; margin-bottom: 25px; color: #fff; }
.engineer-intro { color: #b3c6d1; font-size: 1.05rem; line-height: 1.8; }
.engineer-intro strong { color: #fff; }
.principles-list { margin-top: 32px; }
.principles-list article { display: grid; grid-template-columns: 43px 1fr; gap: 18px; padding: 21px 0; border-top: 1px solid rgba(255,255,255,.13); }
.principles-list article:last-child { border-bottom: 1px solid rgba(255,255,255,.13); }
.principles-list b { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid rgba(98,200,255,.35); border-radius: 50%; color: var(--cyan); font-size: .65rem; }
.principles-list h3 { margin: 2px 0 5px; color: #fff; font-size: 1rem; letter-spacing: -.02em; }
.principles-list p { margin: 0; color: #8fa8b8; font-size: .82rem; }
.professional-note { margin: 20px 0 0; padding-left: 14px; border-left: 2px solid var(--blue); color: #748f9f; font-size: .7rem; }

.process-section { background: var(--paper); }
.centered-heading { max-width: 790px; margin-right: auto; margin-left: auto; text-align: center; }
.centered-heading .eyebrow { justify-content: center; }
.centered-heading > p:last-child { margin-top: 17px; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; counter-reset: item; list-style: none; }
.process-grid li { min-height: 270px; position: relative; padding: 27px 27px 31px; border: 1px solid var(--line); border-right: 0; background: #fff; }
.process-grid li:last-child { border-right: 1px solid var(--line); }
.process-grid li::after { content: ""; position: absolute; z-index: 2; right: -8px; top: 57px; width: 15px; height: 15px; border-top: 1px solid var(--line); border-right: 1px solid var(--line); background: #fff; transform: rotate(45deg); }
.process-grid li:last-child::after { display: none; }
.process-grid li > span { display: grid; width: 43px; height: 43px; place-items: center; margin-bottom: 43px; border-radius: 50%; background: var(--blue-soft); color: var(--blue-dark); font-size: .69rem; font-weight: 850; }
.process-grid h3 { margin-bottom: 12px; font-size: 1.08rem; }
.process-grid p { margin: 0; font-size: .78rem; }
.process-callout { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-top: 22px; padding: 20px 25px; border-radius: 8px; background: var(--navy); }
.process-callout > div { display: flex; align-items: center; gap: 12px; }
.process-callout strong { color: #fff; font-size: .8rem; }
.process-callout p { margin: 0; color: #93aab9; font-size: .77rem; }

.models-section { background: #fff; }
.models-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.model-card { grid-column: span 4; overflow: hidden; border: 1px solid var(--line); border-radius: 3px; background: #fff; box-shadow: 0 8px 25px rgba(7,27,45,.04); transition: transform .25s, box-shadow .25s; }
.model-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); }
.model-card.featured { grid-column: span 8; display: grid; grid-template-columns: 1.2fr .8fr; }
.model-card.featured > a { display: grid; grid-template-columns: 1.2fr .8fr; height: 100%; }
.media-frame { width: 100%; aspect-ratio: 16 / 10; overflow: hidden; background: #d9e2e7; }
.model-card.featured .media-frame { height: 100%; aspect-ratio: auto; }
.media-frame img, .article-media img { width: 100%; height: 100%; object-fit: cover; object-position: center; transition: transform .55s ease; }
.model-card:hover img, .article-card:hover img { transform: scale(1.035); }
.model-body { padding: 24px; }
.model-body > span, .article-meta > span { color: var(--blue-dark); font-size: .63rem; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.model-body h3 { margin: 8px 0 10px; font-size: 1.28rem; }
.model-body p { min-height: 66px; margin-bottom: 19px; font-size: .8rem; }
.model-card.featured .model-body { display: flex; flex-direction: column; justify-content: center; padding: 34px; background: var(--navy); }
.model-card.featured .model-body > span { color: var(--cyan); }
.model-card.featured .model-body h3, .model-card.featured .model-body a { color: #fff; }
.model-card.featured .model-body p { color: #98afbd; }
.image-disclaimer { margin: 20px 0 0; color: #81909b; font-size: .68rem; text-align: center; }

.comparison-section { padding: 115px 0; background: linear-gradient(135deg, #071b2d, #0d3149); }
.comparison-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 90px; align-items: center; }
.comparison-copy h2 { margin-bottom: 22px; color: #fff; }
.comparison-copy > p:not(.eyebrow) { color: #9bb1c0; font-size: .94rem; }
.button-light { margin-top: 17px; background: #fff; color: var(--navy); box-shadow: none; }
.button-light:hover { background: var(--blue-soft); color: var(--navy); }
.comparison-table { border: 1px solid rgba(255,255,255,.14); border-radius: 10px; overflow: hidden; background: rgba(255,255,255,.035); }
.table-head, .table-row { display: grid; grid-template-columns: .55fr .9fr 1.2fr; }
.table-head { background: rgba(0,0,0,.2); color: #88a1b0; font-size: .63rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.table-head span, .table-row > * { padding: 13px 16px; border-right: 1px solid rgba(255,255,255,.1); }
.table-head span:last-child, .table-row > *:last-child { border-right: 0; }
.table-row { border-top: 1px solid rgba(255,255,255,.1); color: #a8bdca; font-size: .74rem; }
.table-row strong { color: #fff; }
.table-row > span:last-child { display: flex; align-items: center; gap: 8px; color: #d8e7ef; }
.table-row .check { width: 19px; height: 19px; }

.guides-section { background: var(--warm); }
.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.article-card { overflow: hidden; border: 1px solid #ded9d1; border-radius: 4px; background: #fff; transition: transform .25s, box-shadow .25s; }
.article-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); }
.article-media { width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: #d8d4ce; }
.article-body { padding: 25px; }
.article-meta { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.article-meta small { color: #8c969d; font-size: .62rem; }
.article-body h3 { min-height: 77px; margin: 12px 0; font-size: 1.23rem; }
.article-body > p { min-height: 79px; font-size: .8rem; }
.sources-note { display: grid; grid-template-columns: auto auto 1fr; gap: 18px; align-items: center; margin-top: 24px; padding: 19px 22px; border: 1px solid #dcd6ce; background: rgba(255,255,255,.53); }
.sources-note strong { color: var(--navy); font-size: .72rem; }
.sources-note span { color: var(--blue-dark); font-size: .7rem; font-weight: 820; letter-spacing: .04em; }
.sources-note p { margin: 0; color: #7f898f; font-size: .68rem; text-align: right; }

.faq-section { padding: 115px 0; background: #fff; }
.faq-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 105px; }
.faq-grid h2 { margin-bottom: 19px; }
.faq-grid > div:first-child > p:last-child { font-size: .9rem; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px 0; color: var(--navy); font-weight: 780; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { width: 29px; height: 29px; display: grid; flex: 0 0 auto; place-items: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue-dark); font-size: 1.1rem; font-weight: 400; transition: transform .2s; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { max-width: 750px; margin: -7px 50px 24px 0; font-size: .82rem; line-height: 1.75; }

.quote-section { padding: 100px 0; position: relative; overflow: hidden; background: var(--blue-soft); }
.quote-section::before { content: ""; position: absolute; inset: 0; opacity: .26; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 55px 55px; }
.quote-shell { position: relative; display: grid; grid-template-columns: .76fr 1.24fr; gap: 80px; align-items: center; padding: 62px; border-radius: 13px; background: var(--navy); box-shadow: var(--shadow); }
.quote-copy h2 { margin-bottom: 22px; color: #fff; }
.quote-copy > p:not(.eyebrow) { color: #9eb3c1; }
.quote-copy ul { display: grid; gap: 11px; margin: 25px 0; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); list-style: none; color: #c3d3dd; font-size: .77rem; }
.quote-copy li { display: flex; align-items: center; gap: 9px; }
.quote-copy > a { color: var(--cyan); font-size: .8rem; font-weight: 760; }
.quote-form { padding: 31px; border-radius: 10px; background: #fff; }
.form-progress { display: flex; align-items: center; margin-bottom: 25px; }
.form-progress span { width: 31px; height: 31px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: #84939e; font-size: .64rem; font-weight: 800; }
.form-progress span.active { border-color: var(--blue); background: var(--blue); color: #fff; }
.form-progress i { flex: 1; height: 1px; background: var(--line); }
.quote-form h3 { margin-bottom: 18px; font-size: 1.37rem; }
.project-option { position: relative; display: grid; grid-template-columns: 43px 1fr auto; gap: 12px; align-items: center; margin-top: 9px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; }
.project-option.active { border-color: rgba(10,79,163,.45); background: var(--blue-soft); }
.project-option input { position: absolute; opacity: 0; }
.project-option > b { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 7px; background: var(--navy); color: #fff; font-size: .65rem; }
.project-option.active > b { background: var(--blue); }
.project-option strong, .project-option small { display: block; }
.project-option strong { color: var(--navy); font-size: .8rem; }
.project-option small { color: #74838e; font-size: .66rem; }
.project-option em { width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font-size: .62rem; font-style: normal; }
.form-button { width: 100%; margin-top: 18px; border: 0; }
.privacy-copy { margin: 11px 0 0; color: #8a979f; font-size: .61rem; text-align: center; }

.site-footer { padding: 78px 0 25px; background: #051522; }
.footer-grid { display: grid; grid-template-columns: 1.35fr .8fr .8fr 1fr; gap: 60px; }
.footer-brand > img { width: 195px; height: auto; object-fit: contain; filter: brightness(1.25); }
.footer-brand > p { max-width: 320px; margin: 20px 0; color: #78909f; font-size: .8rem; }
.footer-credential { display: flex; align-items: center; gap: 11px; color: #a7bac5; font-size: .68rem; line-height: 1.5; }
.footer-credential .seal-monogram { width: 37px; height: 37px; font-size: .72rem; }
.footer-grid > div:not(:first-child) { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; color: #8096a4; font-size: .74rem; }
.footer-grid h2 { margin-bottom: 11px; color: #fff; font-size: .77rem; letter-spacing: .03em; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 57px; padding-top: 21px; border-top: 1px solid rgba(255,255,255,.1); color: #607987; font-size: .66rem; }
.footer-bottom div { display: flex; gap: 20px; }
.mobile-cta { display: none; }

@media (max-width: 1080px) {
  .desktop-nav { gap: 16px; }
  .desktop-nav a { font-size: .75rem; }
  .hero-grid { grid-template-columns: 1fr .72fr; gap: 45px; }
  .hero-copy h1 { font-size: clamp(3.5rem, 7vw, 5.3rem); }
  .split-heading { gap: 55px; }
  .engineer-grid { gap: 65px; }
  .comparison-grid { gap: 55px; }
  .quote-shell { gap: 45px; padding: 48px; }
}

@media (max-width: 900px) {
  .desktop-nav, .header-cta { display: none; }
  .mobile-menu { display: block; }
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; padding-top: 85px; }
  .hero-copy { max-width: 720px; }
  .hero-card { width: min(100%, 570px); justify-self: end; }
  .hero-overlay { background: linear-gradient(90deg, rgba(5,20,34,.98), rgba(5,20,34,.8)); }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-grid > div { min-height: 78px; border-bottom: 1px solid var(--line); }
  .split-heading, .engineer-grid, .comparison-grid, .faq-grid, .quote-shell { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .engineer-visual { max-width: 600px; }
  .engineer-visual > img { aspect-ratio: 16 / 11; }
  .visual-caption { right: 25px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid li:nth-child(2) { border-right: 1px solid var(--line); }
  .process-grid li:nth-child(2)::after { display: none; }
  .process-grid li:nth-child(n+3) { border-top: 0; }
  .model-card, .model-card.featured { grid-column: span 6; }
  .model-card.featured { display: block; }
  .model-card.featured > a { display: block; }
  .model-card.featured .media-frame { aspect-ratio: 16 / 10; }
  .articles-grid { grid-template-columns: 1fr 1fr; }
  .article-card:last-child { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; }
  .article-card:last-child .article-media { aspect-ratio: auto; }
  .article-body h3, .article-body > p { min-height: 0; }
  .sources-note { grid-template-columns: 1fr 1fr; }
  .sources-note p { grid-column: 1 / -1; text-align: left; }
  .quote-shell { gap: 30px; }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2 / -1; }
}

@media (max-width: 620px) {
  body { padding-bottom: 62px; }
  .container { width: min(calc(100% - 30px), 1220px); }
  .section { padding: 82px 0; }
  .trust-bar-inner { min-height: 40px; justify-content: flex-start; font-size: .63rem; }
  .trust-bar-inner > span:last-child { display: none; }
  .header-inner { height: 67px; }
  .brand { width: 166px; }
  .mobile-menu nav { top: 67px; }
  .hero-image { object-position: 63% center; }
  .hero-overlay { background: linear-gradient(0deg, rgba(5,20,34,1) 16%, rgba(5,20,34,.91) 70%, rgba(5,20,34,.6)); }
  .hero-grid { gap: 45px; padding-top: 66px; padding-bottom: 62px; }
  .hero-copy h1 { font-size: clamp(3.05rem, 15vw, 4.3rem); }
  .hero-lead { font-size: .96rem; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 14px; }
  .hero-actions .button { width: 100%; }
  .hero-actions .text-link { justify-content: center; }
  .hero-checks { display: grid; gap: 10px; }
  .hero-card { width: 100%; }
  .hero-card-body { padding: 17px; }
  .management-line { grid-template-columns: 38px 1fr auto; padding: 9px; }
  .management-line > b { width: 38px; height: 38px; }
  .management-line small { font-size: .6rem; }
  .proof-grid { grid-template-columns: 1fr 1fr; }
  .proof-grid > div { justify-content: flex-start; padding: 0 13px; }
  .proof-grid strong { font-size: 1.15rem; }
  .proof-grid span { font-size: .65rem; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2, .engineer-copy h2, .comparison-copy h2, .faq-grid h2, .quote-copy h2 { font-size: clamp(2.25rem, 11vw, 3.2rem); }
  .split-heading { gap: 18px; }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; padding: 25px; }
  .service-card > p, .service-card h3 { min-height: 0; }
  .engineer-section { padding: 83px 0; }
  .engineer-grid { gap: 55px; }
  .engineer-visual > img { aspect-ratio: 4 / 5; }
  .visual-caption { left: 13px; right: 13px; bottom: 13px; }
  .visual-caption small { display: none; }
  .process-grid { grid-template-columns: 1fr; }
  .process-grid li, .process-grid li:nth-child(2) { min-height: auto; border-right: 1px solid var(--line); border-bottom: 0; }
  .process-grid li:last-child { border-bottom: 1px solid var(--line); }
  .process-grid li:nth-child(n+3) { border-top: 1px solid var(--line); }
  .process-grid li::after { display: none; }
  .process-grid li > span { margin-bottom: 25px; }
  .process-callout { align-items: flex-start; flex-direction: column; gap: 8px; }
  .model-card, .model-card.featured { grid-column: 1 / -1; }
  .model-card.featured .model-body { padding: 25px; }
  .comparison-section { padding: 82px 0; }
  .comparison-table { overflow-x: auto; }
  .table-head, .table-row { min-width: 650px; }
  .articles-grid { grid-template-columns: 1fr; }
  .article-card:last-child { grid-column: auto; display: block; }
  .article-card:last-child .article-media { aspect-ratio: 16 / 9; }
  .sources-note { grid-template-columns: 1fr; }
  .sources-note p { grid-column: auto; }
  .faq-section { padding: 82px 0; }
  .faq-grid { gap: 35px; }
  .quote-section { padding: 55px 0; }
  .quote-shell { padding: 25px 19px; }
  .quote-form { padding: 21px 16px; }
  .project-option { grid-template-columns: 40px 1fr auto; }
  .project-option > b { width: 40px; height: 40px; }
  .site-footer { padding-top: 65px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 38px 25px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid > div:last-child { grid-column: 1 / -1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 10px; }
  .mobile-cta { position: fixed; z-index: 100; left: 0; right: 0; bottom: 0; min-height: 62px; display: flex; align-items: center; justify-content: center; gap: 9px; background: var(--blue); color: #fff; font-size: .83rem; font-weight: 820; box-shadow: 0 -10px 30px rgba(7,27,45,.2); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}