:root {
  --navy: #092943;
  --navy-2: #123d5b;
  --blue: #0d6da8;
  --blue-light: #dcecf5;
  --orange: #ed6b2d;
  --orange-dark: #d6531c;
  --ink: #13232f;
  --muted: #5f6f7a;
  --line: #dce3e8;
  --soft: #f3f6f8;
  --white: #ffffff;
  --shadow-sm: 0 10px 24px rgba(9, 41, 67, .08);
  --shadow-lg: 0 30px 70px rgba(9, 41, 67, .16);
  --container: 1240px;
  --header-h: 82px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Segoe UI", Arial, Helvetica, sans-serif; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; letter-spacing: 0; }
h2 { margin-bottom: 24px; font-size: clamp(2.2rem, 4.2vw, 4rem); font-weight: 680; }
p { color: var(--muted); }
.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.section { padding: 112px 0; }
.skip-link { position: fixed; z-index: 9999; top: 12px; left: 12px; transform: translateY(-150%); padding: 10px 16px; color: white; background: var(--navy); }
.skip-link:focus { transform: none; }
.section-index { margin-bottom: 18px; color: var(--blue); font-size: .78rem; font-weight: 750; text-transform: uppercase; letter-spacing: .12em; }
.section-index.light { color: #84c9ee; }

.site-header { position: fixed; z-index: 1000; inset: 0 0 auto; height: var(--header-h); color: var(--white); border-bottom: 1px solid rgba(255,255,255,.18); transition: background .3s ease, color .3s ease, box-shadow .3s ease; }
.site-header.scrolled { color: var(--ink); background: rgba(255,255,255,.96); box-shadow: 0 8px 30px rgba(9,41,67,.1); backdrop-filter: blur(16px); }
.nav-shell { width: min(1380px, calc(100% - 48px)); height: 100%; margin: auto; display: flex; align-items: center; gap: 34px; }
.brand { display: flex; flex: 0 0 auto; width: 145px; height: 54px; align-items: center; }
.brand img { width: 100%; height: auto; filter: brightness(0) invert(1); transition: filter .3s; }
.site-header.scrolled .brand img, .footer-brand img { filter: none; }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: 27px; }
.main-nav a { position: relative; font-size: .87rem; font-weight: 650; }
.main-nav a::after { position: absolute; content: ""; inset: auto 0 -10px; height: 2px; background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .2s; }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.nav-cta { display: inline-flex; min-height: 44px; align-items: center; gap: 14px; padding: 0 20px; color: white; background: var(--orange); font-size: .86rem; font-weight: 750; }
.nav-cta:hover { background: var(--orange-dark); }
.menu-toggle { display: none; width: 44px; height: 44px; margin-left: auto; padding: 10px; border: 0; background: transparent; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: currentColor; }

.hero { position: relative; min-height: 650px; height: calc(100vh - 32px); max-height: 840px; overflow: hidden; color: var(--white); background: linear-gradient(118deg, #071d2f 0%, #0b3452 58%, #0f5476 100%); }
.hero::before { position: absolute; content: ""; inset: 0; background: linear-gradient(90deg, rgba(3,17,29,.42), transparent 52%); }
.hero-lines { position: absolute; inset: 0; opacity: .24; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 88px 88px; mask-image: linear-gradient(to right, black, transparent 80%); }
.hero-grid { position: relative; height: 100%; display: grid; grid-template-columns: .86fr 1.14fr; align-items: center; padding-top: var(--header-h); }
.hero-copy { position: relative; z-index: 2; padding-bottom: 35px; }
.hero h1 { max-width: 700px; margin-bottom: 25px; font-size: clamp(3.4rem, 5.35vw, 5.55rem); font-weight: 720; }
.hero-copy > p { max-width: 650px; color: rgba(255,255,255,.78); font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; gap: 18px; padding: 0 25px; border: 1px solid transparent; border-radius: 2px; font-size: .9rem; font-weight: 750; transition: transform .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--orange); }
.button-primary:hover { background: var(--orange-dark); }
.button-secondary { color: var(--white); border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.04); }
.button-secondary:hover { border-color: white; background: rgba(255,255,255,.1); }
.hero-metrics { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 650px; margin: 36px 0 0; }
.hero-metrics div { padding: 0 22px; border-left: 1px solid rgba(255,255,255,.24); }
.hero-metrics div:first-child { padding-left: 0; border-left: 0; }
.hero-metrics dt { font-size: 1.35rem; font-weight: 700; }
.hero-metrics dd { margin: 5px 0 0; color: rgba(255,255,255,.6); font-size: .77rem; }
.metric-note { margin-top: 12px; font-size: .7rem !important; }
.hero-media { position: relative; align-self: stretch; display: flex; align-items: center; justify-content: center; }
.hero-media img { position: relative; z-index: 1; width: 116%; height: auto; max-width: none; transform: translate(4%, 3%); }
.hero-glow { position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; background: rgba(74,176,224,.18); filter: blur(90px); }
.model-rail { position: absolute; z-index: 2; right: -5px; bottom: 90px; display: flex; gap: 2px; }
.model-rail span { padding: 10px 14px; color: rgba(255,255,255,.8); background: rgba(6,29,46,.8); border-top: 2px solid var(--orange); font-size: .7rem; font-weight: 700; }
.scroll-cue { position: absolute; z-index: 3; left: 50%; bottom: 23px; display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.7); font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; transform: translateX(-50%); }
.scroll-cue span { position: relative; width: 1px; height: 28px; overflow: hidden; background: rgba(255,255,255,.24); }
.scroll-cue span::after { position: absolute; content: ""; inset: -100% 0 0; background: white; animation: scrollLine 1.8s infinite; }
@keyframes scrollLine { to { transform: translateY(200%); } }

.trust-strip { position: relative; z-index: 3; margin-top: 0; color: var(--white); background: var(--orange); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid div { min-height: 114px; display: flex; flex-direction: column; justify-content: center; padding: 20px 28px; border-left: 1px solid rgba(255,255,255,.24); }
.trust-grid div:last-child { border-right: 1px solid rgba(255,255,255,.24); }
.trust-grid strong { font-size: 1.35rem; }
.trust-grid span { margin-top: 3px; color: rgba(255,255,255,.78); font-size: .79rem; }

.split-intro { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: start; }
.split-intro h2 { max-width: 610px; }
.lead-copy p { max-width: 690px; font-size: 1.06rem; }
.process-wrap { margin-top: 70px; display: grid; grid-template-columns: 1.35fr .65fr; min-height: 630px; background: var(--soft); box-shadow: var(--shadow-lg); }
.process-visual { position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; background: linear-gradient(145deg, #e7edf1, #fff); }
.process-visual img { width: 96%; height: 96%; object-fit: contain; }
.hotspot { position: absolute; width: 42px; height: 42px; padding: 0; color: white; border: 5px solid rgba(255,255,255,.8); border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 8px rgba(13,109,168,.18); font-weight: 800; }
.hotspot:hover, .hotspot.active { background: var(--orange); box-shadow: 0 0 0 10px rgba(237,107,45,.2); }
.hotspot-1 { left: 30%; top: 27%; }
.hotspot-2 { left: 25%; top: 59%; }
.hotspot-3 { left: 52%; top: 22%; }
.hotspot-4 { right: 14%; top: 41%; }
.process-panel { display: flex; flex-direction: column; justify-content: center; padding: 68px 54px; color: white; background: var(--navy); }
.process-number { width: 52px; height: 52px; display: grid; place-items: center; margin-bottom: 42px; color: var(--orange); border: 1px solid rgba(255,255,255,.22); font-weight: 800; }
.process-panel h3 { margin-bottom: 18px; font-size: 2rem; }
.process-panel p, .process-panel li { color: rgba(255,255,255,.68); }
.process-panel ul { margin: 20px 0 0; padding: 0; list-style: none; }
.process-panel li { position: relative; padding: 10px 0 10px 21px; border-top: 1px solid rgba(255,255,255,.12); font-size: .84rem; }
.process-panel li::before { position: absolute; left: 0; content: "+"; color: var(--orange); }

.dark-section { color: white; background: var(--navy); }
.tech-head { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; }
.tech-head h2 { max-width: 750px; }
.tech-head > p { color: rgba(255,255,255,.62); }
.flow-line { position: relative; margin-top: 64px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.18); }
.flow-line article { position: relative; padding: 38px 32px 52px 0; }
.flow-line article::before { position: absolute; content: ""; width: 9px; height: 9px; top: -5px; left: 0; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 7px rgba(237,107,45,.15); }
.flow-line span { color: #70b9e2; font-size: .72rem; }
.flow-line h3 { margin: 13px 0 10px; font-size: 1.25rem; }
.flow-line p { color: rgba(255,255,255,.56); font-size: .86rem; }
.advantage-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; background: #0e3450; }
.advantage-grid article { min-height: 260px; padding: 40px; border-right: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
.advantage-grid h3 { margin: 26px 0 12px; font-size: 1.18rem; }
.advantage-grid p { color: rgba(255,255,255,.58); font-size: .86rem; }
.adv-num { color: var(--orange); font-size: .75rem; font-weight: 800; }
.advantage-lead { position: relative; grid-row: span 2; min-height: 520px !important; overflow: hidden; padding: 0 !important; }
.advantage-lead img { width: 100%; height: 100%; object-fit: cover; background: white; }
.advantage-lead::after { position: absolute; content: ""; inset: 45% 0 0; background: linear-gradient(transparent, rgba(2,19,31,.94)); }
.advantage-lead div { position: absolute; z-index: 2; inset: auto 42px 42px; display: flex; flex-direction: column; }
.advantage-lead strong { font-size: 1.4rem; }
.advantage-lead span { margin-top: 6px; color: rgba(255,255,255,.66); font-size: .84rem; }

.section-heading { max-width: 930px; margin-bottom: 58px; }
.section-heading > p:last-child { max-width: 760px; font-size: 1.02rem; }
.model-selector { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.model-tab { padding: 24px 28px; text-align: left; color: #7a8790; border: 0; border-top: 3px solid transparent; background: transparent; font-size: 1.22rem; font-weight: 760; }
.model-tab span { display: block; margin-top: 6px; font-size: .73rem; font-weight: 500; }
.model-tab.active { color: var(--navy); border-top-color: var(--orange); background: var(--soft); }
.model-stage { display: grid; grid-template-columns: .75fr 1.25fr; min-height: 520px; background: var(--soft); }
.model-copy { display: flex; flex-direction: column; justify-content: center; padding: 55px; }
.model-label { margin-bottom: 20px; color: var(--orange); font-size: .76rem; font-weight: 800; }
.model-copy h3 { font-size: 2.2rem; }
.model-copy > p { font-size: .92rem; }
.model-stage > img { width: 100%; height: 100%; max-height: 560px; object-fit: contain; background: linear-gradient(135deg, #e1e8ed, #fff); }
.model-stats { margin-top: 30px; display: grid; gap: 14px; }
.model-stats div { display: flex; align-items: baseline; justify-content: space-between; padding-top: 13px; border-top: 1px solid var(--line); }
.model-stats strong { color: var(--navy); font-size: 1.15rem; }
.model-stats span { color: var(--muted); font-size: .74rem; }
.table-wrap { margin-top: 70px; }
.table-title { display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.table-title h3 { font-size: 1.8rem; }
.table-title p { max-width: 540px; text-align: right; font-size: .78rem; }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 18px 22px; text-align: left; border-bottom: 1px solid var(--line); font-size: .86rem; }
thead th { color: white; background: var(--navy); font-size: .79rem; text-transform: uppercase; }
tbody th { min-width: 230px; color: var(--navy); background: var(--soft); font-weight: 700; }
tbody td { min-width: 175px; }
.table-footnote { margin-top: 15px; font-size: .74rem; }

.applications { background: var(--soft); }
.application-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 85px; }
.application-copy { align-self: center; }
.application-copy p { font-size: .95rem; }
.industry-list { margin-top: 35px; display: flex; flex-wrap: wrap; gap: 8px; }
.industry-list span { padding: 8px 12px; color: var(--navy); border: 1px solid #cad9e2; background: white; font-size: .73rem; font-weight: 650; }
.material-board { display: grid; grid-template-columns: repeat(2, 1fr); background: white; box-shadow: var(--shadow-sm); }
.material { min-height: 136px; display: flex; align-items: center; gap: 22px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.material-swatch { flex: 0 0 auto; width: 68px; height: 68px; border-radius: 50%; border: 8px solid white; box-shadow: 0 4px 18px rgba(9,41,67,.16); background-color: #e7e5df; background-image: radial-gradient(circle at 30% 24%, rgba(255,255,255,.9) 0 4%, transparent 5%), radial-gradient(circle at 68% 72%, rgba(70,80,84,.24) 0 3%, transparent 4%), radial-gradient(circle at 45% 52%, rgba(255,255,255,.7) 0 7%, transparent 8%); background-size: 22px 22px, 16px 16px, 34px 34px; }
.material h3 { margin: 0 0 7px; font-size: 1rem; }
.material p { margin: 0; font-size: .72rem; }
.material-calcite .material-swatch { background-color: #f3f1ea; }
.material-dolomite .material-swatch { background-color: #d9d2c5; }
.material-talc .material-swatch { background-color: #dce6de; }
.material-barite .material-swatch { background-color: #b9c2c6; }
.material-kaolin .material-swatch { background-color: #f0e4d3; }
.material-gypsum .material-swatch { background-color: #e7e2df; }
.material-bentonite .material-swatch { background-color: #a99c8b; }
.suitability-note { margin-top: 36px; padding: 26px 30px; display: flex; align-items: flex-start; gap: 38px; color: white; background: var(--navy); }
.suitability-note strong { flex: 0 0 120px; color: #8bd1f4; }
.suitability-note p { margin: 0; color: rgba(255,255,255,.68); font-size: .82rem; }

.cases { color: white; background: #071f32; }
.section-heading.inverse p { color: rgba(255,255,255,.6); }
.case-feature { position: relative; height: 600px; overflow: hidden; }
.case-feature img { width: 100%; height: 100%; object-fit: cover; }
.case-feature::after { position: absolute; content: ""; inset: 0; background: linear-gradient(90deg, rgba(4,22,35,.88), transparent 65%); }
.case-caption { position: absolute; z-index: 2; left: 55px; bottom: 55px; width: min(470px, calc(100% - 70px)); }
.case-caption span, .video-row span { color: #83c9ef; font-size: .72rem; text-transform: uppercase; }
.case-caption h3 { margin: 12px 0; font-size: 2rem; }
.case-caption p { color: rgba(255,255,255,.65); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 16px; }
.case-grid figure { position: relative; height: 310px; margin: 0; overflow: hidden; }
.case-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-grid figure:hover img { transform: scale(1.03); }
.case-grid figcaption { position: absolute; inset: auto 0 0; padding: 45px 22px 18px; background: linear-gradient(transparent, rgba(3,18,28,.9)); font-size: .82rem; font-weight: 650; }
.video-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 16px; }
.video-row article { display: grid; grid-template-columns: 230px 1fr; align-items: center; min-height: 380px; background: #0d314c; }
.video-row video { width: 100%; height: 380px; object-fit: cover; background: #021019; }
.video-row article > div { padding: 32px; }
.video-row h3 { margin-top: 12px; }

.comparison-head { display: grid; grid-template-columns: 1fr .75fr; gap: 90px; align-items: end; }
.comparison-head p { font-size: .96rem; }
.comparison-table-wrap { margin-top: 60px; overflow-x: auto; box-shadow: var(--shadow-sm); }
.comparison-table th, .comparison-table td { min-width: 220px; padding: 22px 24px; }
.comparison-table thead th { background: var(--navy); }
.comparison-table tbody th { background: #f3f6f8; }
.comparison-table .highlight { background: #e8f4fa; }
.comparison-table thead .highlight { color: white; background: var(--blue); }
.decision-callout { margin-top: 36px; padding: 30px 36px; display: flex; align-items: center; justify-content: space-between; gap: 40px; color: white; background: var(--navy); }
.decision-callout div { display: flex; flex-direction: column; max-width: 760px; }
.decision-callout span { margin-top: 5px; color: rgba(255,255,255,.64); font-size: .82rem; }

.parts { background: var(--soft); }
.parts-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: end; }
.parts-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 30px; }
.parts-points span { position: relative; padding-left: 18px; color: var(--navy); font-size: .78rem; font-weight: 650; }
.parts-points span::before { position: absolute; left: 0; content: "+"; color: var(--orange); }
.parts-rail { margin-top: 55px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.parts-rail article { padding-bottom: 24px; background: white; border-bottom: 3px solid transparent; transition: transform .2s, box-shadow .2s, border-color .2s; }
.parts-rail article:hover { transform: translateY(-4px); border-bottom-color: var(--orange); box-shadow: var(--shadow-sm); }
.parts-rail img { width: 100%; height: 180px; object-fit: contain; padding: 20px; background: #edf1f3; }
.parts-rail h3, .parts-rail p { margin-inline: 22px; }
.parts-rail h3 { margin-top: 22px; margin-bottom: 9px; font-size: 1rem; }
.parts-rail p { margin-bottom: 0; font-size: .74rem; }

.company-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: center; }
.company-copy p { font-size: .94rem; }
.credential-list { margin-top: 30px; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.credential-list span { padding: 13px 10px 13px 0; border-bottom: 1px solid var(--line); font-size: .76rem; font-weight: 650; }
.company-main { width: 100%; height: 430px; object-fit: cover; box-shadow: var(--shadow-lg); }
.company-small { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.company-small img { width: 100%; height: 180px; object-fit: cover; }
.certificate-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 70px; }
.certificate-row figure { margin: 0; padding: 20px; background: var(--soft); border: 1px solid var(--line); }
.certificate-row img { width: 100%; height: 260px; object-fit: contain; mix-blend-mode: multiply; }
.certificate-row figcaption { margin-top: 15px; color: var(--navy); font-size: .75rem; font-weight: 700; }

.service { color: white; background: linear-gradient(115deg, var(--navy) 0 53%, #0f4868 53% 100%); }
.service-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 110px; }
.service-title { align-self: center; }
.service-title p { color: rgba(255,255,255,.65); }
.service-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.2); }
.service-steps li { display: grid; grid-template-columns: 75px 1fr; gap: 24px; padding: 25px 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.service-steps li > span { color: var(--orange); font-weight: 750; }
.service-steps h3 { margin: 0 0 8px; font-size: 1.05rem; }
.service-steps p { margin: 0; color: rgba(255,255,255,.6); font-size: .82rem; }

.faq-layout { display: grid; grid-template-columns: .62fr 1.38fr; gap: 100px; align-items: start; }
.faq-sticky { position: sticky; top: 120px; }
.faq-sticky > p { font-size: .9rem; }
.faq-sticky a { color: var(--blue); font-size: .86rem; font-weight: 750; }
.accordion { border-top: 1px solid var(--line); }
.accordion details { border-bottom: 1px solid var(--line); }
.accordion summary { position: relative; padding: 25px 55px 25px 0; cursor: pointer; list-style: none; color: var(--navy); font-size: 1.02rem; font-weight: 700; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary span::before, .accordion summary span::after { position: absolute; content: ""; right: 4px; top: 50%; width: 18px; height: 2px; background: var(--blue); }
.accordion summary span::after { transform: rotate(90deg); transition: transform .2s; }
.accordion details[open] summary span::after { transform: rotate(0); }
.accordion details p { max-width: 780px; padding: 0 55px 24px 0; font-size: .88rem; }

.contact { padding: 105px 0; color: white; background: #062035; }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 95px; }
.contact-copy h2 { font-size: clamp(2.6rem, 4.5vw, 4.6rem); }
.contact-copy > p { color: rgba(255,255,255,.65); }
.contact-details { margin-top: 48px; display: grid; gap: 22px; }
.contact-details a, .contact-details address { display: flex; flex-direction: column; color: white; font-style: normal; font-size: .88rem; }
.contact-details span { margin-bottom: 4px; color: #79c3e9; font-size: .7rem; text-transform: uppercase; }
.inquiry-form { padding: 46px; color: var(--ink); background: white; box-shadow: 0 26px 70px rgba(0,0,0,.22); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.inquiry-form label { display: grid; gap: 8px; margin-bottom: 18px; color: var(--navy); font-size: .75rem; font-weight: 700; }
.inquiry-form input, .inquiry-form textarea { width: 100%; padding: 13px 2px; color: var(--ink); border: 0; border-bottom: 1px solid #bfcbd3; border-radius: 0; outline: none; background: transparent; font-size: .88rem; resize: vertical; }
.inquiry-form input:focus, .inquiry-form textarea:focus { border-bottom-color: var(--orange); box-shadow: 0 1px 0 var(--orange); }
.form-submit { margin-top: 18px; display: flex; align-items: center; gap: 22px; }
.form-submit p { margin: 0; font-size: .7rem; }

.site-footer { color: white; background: #041624; }
.footer-top { min-height: 190px; display: grid; grid-template-columns: 170px 1fr 1.3fr; gap: 55px; align-items: center; }
.footer-brand img { filter: brightness(0) invert(1); }
.footer-top p { margin: 0; color: rgba(255,255,255,.54); font-size: .8rem; }
.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 30px; }
.footer-links a { color: rgba(255,255,255,.72); font-size: .78rem; }
.footer-links a:hover { color: #7ac6ed; }
.footer-bottom { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 30px; color: rgba(255,255,255,.42); border-top: 1px solid rgba(255,255,255,.1); font-size: .7rem; }
.whatsapp-float { position: fixed; z-index: 900; right: 24px; bottom: 24px; min-height: 54px; display: flex; align-items: center; gap: 11px; padding: 8px 18px 8px 9px; color: white; border-radius: 28px; background: #168a57; box-shadow: 0 12px 30px rgba(0,0,0,.25); }
.whatsapp-float span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; color: #168a57; background: white; font-size: .7rem; font-weight: 850; }
.whatsapp-float strong { font-size: .8rem; }
.back-top { position: fixed; z-index: 850; right: 30px; bottom: 90px; width: 42px; height: 42px; padding: 0; color: var(--navy); border: 1px solid var(--line); background: white; box-shadow: var(--shadow-sm); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; }
.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-3px); }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
[data-reveal].revealed { opacity: 1; transform: none; }

@media (max-width: 1100px) {
  :root { --header-h: 72px; }
  .main-nav { gap: 17px; }
  .main-nav a { font-size: .76rem; }
  .nav-cta { padding-inline: 14px; }
  .hero { min-height: 650px; }
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .hero-media img { width: 122%; }
  .process-wrap { min-height: 560px; }
  .process-panel { padding: 44px 35px; }
  .advantage-grid { grid-template-columns: 1.25fr 1fr; }
  .advantage-lead { grid-row: span 3; }
  .application-layout, .company-grid { gap: 55px; }
  .parts-rail { grid-template-columns: repeat(3, 1fr); }
  .video-row article { grid-template-columns: 190px 1fr; }
}

@media (max-width: 860px) {
  .container { width: min(var(--container), calc(100% - 32px)); }
  .section { padding: 84px 0; }
  .nav-shell { width: calc(100% - 32px); }
  .menu-toggle { display: block; }
  .nav-cta { display: none; }
  .main-nav { position: fixed; top: var(--header-h); right: 0; left: 0; display: grid; gap: 0; padding: 12px 24px 24px; color: var(--ink); background: white; box-shadow: var(--shadow-lg); transform: translateY(-130%); transition: transform .3s; }
  .main-nav.open { transform: none; }
  .main-nav a { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: .86rem; }
  .hero { height: calc(100vh - 28px); min-height: 780px; max-height: 900px; }
  .hero-grid { display: block; padding-top: 120px; padding-bottom: 60px; }
  .hero h1 { font-size: 3.85rem; }
  .hero-copy { position: relative; z-index: 3; width: 61%; padding: 0; }
  .hero-media { position: absolute; z-index: 1; right: -9%; bottom: -3%; width: 58%; min-height: 0; }
  .hero-media img { width: 100%; transform: none; filter: none; }
  .model-rail { right: 8%; bottom: 45px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .split-intro, .tech-head, .application-layout, .comparison-head, .parts-intro, .company-grid, .service-grid, .faq-layout, .contact-grid { grid-template-columns: 1fr; gap: 45px; }
  .process-wrap { grid-template-columns: 1fr; }
  .process-visual { min-height: 530px; }
  .process-panel { min-height: 420px; }
  .flow-line { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: 1fr 1fr; }
  .advantage-lead { grid-row: auto; grid-column: span 2; }
  .model-stage { grid-template-columns: 1fr; }
  .model-stage > img { max-height: 460px; order: -1; }
  .model-copy { padding: 42px; }
  .material-board { grid-template-columns: repeat(2, 1fr); }
  .case-feature { height: 520px; }
  .case-grid { grid-template-columns: 1fr 1fr; }
  .case-grid figure:last-child { grid-column: span 2; }
  .video-row { grid-template-columns: 1fr 1fr; }
  .video-row article { grid-template-columns: 1fr; }
  .video-row video { height: 430px; }
  .parts-rail { grid-template-columns: repeat(2, 1fr); }
  .service { background: linear-gradient(145deg, var(--navy), #0f4868); }
  .faq-sticky { position: static; }
  .footer-top { grid-template-columns: 150px 1fr; }
  .footer-links { grid-column: span 2; padding-bottom: 35px; }
}

@media (max-width: 560px) {
  :root { --header-h: 66px; }
  .section { padding: 68px 0; }
  h2 { font-size: 2.4rem; }
  .brand { width: 124px; }
  .hero { height: calc(100vh - 22px); min-height: 760px; max-height: 840px; }
  .hero-grid { padding-top: 105px; padding-bottom: 45px; }
  .hero-copy { width: 100%; }
  .hero h1 { margin-bottom: 22px; font-size: 3rem; }
  .hero-copy > p { font-size: .96rem; }
  .hero-actions { margin-top: 27px; }
  .button { width: 100%; }
  .hero-metrics { margin-top: 36px; grid-template-columns: repeat(3, minmax(0,1fr)); }
  .hero-metrics div { padding: 0 10px; }
  .hero-metrics dt { font-size: .96rem; }
  .hero-metrics dd { font-size: .62rem; line-height: 1.35; }
  .hero-media { right: -23%; bottom: -5%; width: 79%; opacity: .38; }
  .hero-media img { width: 100%; filter: none; }
  .model-rail { display: none; }
  .scroll-cue { display: none; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .trust-grid div { min-height: 96px; padding: 16px; }
  .trust-grid strong { font-size: 1rem; }
  .process-visual { min-height: 360px; }
  .hotspot { width: 34px; height: 34px; border-width: 4px; font-size: .72rem; }
  .process-panel { min-height: 390px; padding: 35px 26px; }
  .process-number { margin-bottom: 25px; }
  .flow-line { grid-template-columns: 1fr; }
  .flow-line article { padding-bottom: 22px; }
  .advantage-grid { display: block; }
  .advantage-grid article { min-height: 0; padding: 30px 24px; }
  .advantage-lead { min-height: 420px !important; }
  .model-selector { grid-template-columns: 1fr; }
  .model-tab { padding: 16px 20px; }
  .model-copy { padding: 30px 24px; }
  .model-copy h3 { font-size: 1.8rem; }
  .table-title { align-items: flex-start; flex-direction: column; }
  .table-title p { text-align: left; }
  .material-board { grid-template-columns: 1fr; }
  .material { min-height: 110px; }
  .suitability-note { flex-direction: column; gap: 10px; }
  .suitability-note strong { flex-basis: auto; }
  .case-feature { height: 440px; }
  .case-caption { left: 24px; bottom: 24px; }
  .case-caption h3 { font-size: 1.55rem; }
  .case-grid, .video-row { grid-template-columns: 1fr; }
  .case-grid figure:last-child { grid-column: auto; }
  .case-grid figure { height: 250px; }
  .video-row video { height: 520px; }
  .decision-callout { flex-direction: column; align-items: stretch; padding: 26px; }
  .parts-points, .credential-list { grid-template-columns: 1fr; }
  .parts-rail { grid-template-columns: 1fr 1fr; gap: 8px; }
  .parts-rail img { height: 135px; }
  .parts-rail h3, .parts-rail p { margin-inline: 15px; }
  .certificate-row { grid-template-columns: 1fr 1fr; gap: 8px; }
  .certificate-row figure { padding: 12px; }
  .certificate-row img { height: 190px; }
  .service-steps li { grid-template-columns: 48px 1fr; }
  .accordion summary { padding-right: 40px; font-size: .92rem; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .inquiry-form { padding: 30px 22px; }
  .form-submit { flex-direction: column; align-items: stretch; }
  .footer-top { grid-template-columns: 1fr; gap: 22px; padding: 40px 0; }
  .footer-links { grid-column: auto; grid-template-columns: 1fr; padding-bottom: 0; }
  .footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; gap: 4px; }
  .whatsapp-float { right: 14px; bottom: 14px; padding-right: 10px; }
  .whatsapp-float strong { display: none; }
  .back-top { right: 19px; bottom: 78px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}