*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --navy: #263359; --navy-deep: #1a2440; --navy-darker: #111a30;
  --cyan: #75fae2; --cyan-dim: rgba(117,250,226,.15);
  --purple: #7b4ff5; --purple-deep: #560ff3;
  --surface: rgba(255,255,255,.04); --surface-hover: rgba(255,255,255,.07);
  --border: rgba(255,255,255,.08); --border-light: rgba(255,255,255,.12);
  --text-primary: #fff; --text-secondary: rgba(255,255,255,.65); --text-muted: rgba(255,255,255,.4);
  --font-display: 'Outfit', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --radius: 14px; --radius-lg: 22px; --radius-xl: 32px;
}
html { scroll-behavior: smooth; font-size: 16px; overscroll-behavior: none; }
body { font-family: var(--font-body); background: var(--navy-deep); color: var(--text-primary); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
::selection { background: var(--cyan); color: var(--navy-deep); }
.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.gradient-text { background: linear-gradient(135deg, var(--cyan), var(--purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* ====== LOADER ====== */
.loader { position: fixed; inset: 0; z-index: 9999; background: var(--navy-darker); display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 1.5rem; transition: opacity .5s ease, visibility .5s ease; }
.loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-logo { height: 70px; opacity: 0; animation: loaderFadeIn .4s .05s ease forwards; }
.loader-bar { width: 160px; height: 3px; background: var(--border); border-radius: 10px; overflow: hidden; }
.loader-bar-inner { height: 100%; width: 0%; background: linear-gradient(90deg, var(--cyan), var(--purple)); border-radius: 10px; animation: loaderFill .85s .15s cubic-bezier(.4, 0, .2, 1) forwards; }
@keyframes loaderFadeIn { to { opacity: 1; } }
@keyframes loaderFill { to { width: 100%; } }

/* ====== SCROLL PROGRESS ====== */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; z-index: 999; background: linear-gradient(90deg, var(--cyan), var(--purple)); width: 0%; transition: width .08s; }

/* ====== NAV ====== */
nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 1rem 2rem; border-bottom: 1px solid transparent; transition: border-color .5s; }
nav::before { content: ''; position: absolute; inset: 0; z-index: -1; background: rgba(26,36,64,.82); backdrop-filter: blur(24px) saturate(1.4); -webkit-backdrop-filter: blur(24px) saturate(1.4); opacity: 0; transition: opacity .5s; pointer-events: none; }
nav.scrolled { border-bottom-color: var(--border); }
nav.scrolled::before { opacity: 1; }
.nav-inner { max-width: 1280px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.logo-link { text-decoration: none; display: flex; align-items: center; }
.logo-link img { height: 38px; width: auto; }
.nav-links { display: flex; gap: 2.25rem; align-items: center; }
.nav-links a { font-family: var(--font-display); font-size: .78rem; font-weight: 500; color: var(--text-secondary); text-decoration: none; letter-spacing: .04em; text-transform: uppercase; transition: color .25s; }
.nav-links a:hover, .nav-links a.active { color: var(--cyan); }
.nav-cta { background: var(--cyan) !important; color: var(--navy-deep) !important; padding: .55rem 1.4rem !important; border-radius: 100px; font-weight: 700 !important; transition: box-shadow .3s, transform .2s !important; }
.nav-cta:hover { box-shadow: 0 0 25px rgba(117,250,226,.4) !important; transform: translateY(-1px) !important; color: var(--navy-deep) !important; }
/* NAV DROPDOWN */
.nav-dropdown { position: relative; display: flex; align-items: center; }
.nav-dropdown::after { content: ''; position: absolute; top: 100%; left: 0; right: 0; height: 1.25rem; }
.nav-dropdown > a { display: flex; align-items: center; gap: .3rem; }
.nav-dropdown > a .ndrop-chevron { transition: transform .25s; margin-top: 1px; }
.nav-dropdown:hover > a .ndrop-chevron { transform: rotate(180deg); }
.nav-dropdown-menu { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(-6px); width: 520px; background: rgba(6,10,32,.97); backdrop-filter: blur(24px) saturate(180%); -webkit-backdrop-filter: blur(24px) saturate(180%); border: 1px solid rgba(117,250,226,.13); border-radius: 16px; padding: 1.25rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0 .75rem; opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; z-index: 500; box-shadow: 0 24px 64px rgba(0,0,0,.6); }
.nav-dropdown:hover .nav-dropdown-menu { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.ndm-col-label { font-family: var(--font-display); font-size: .62rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--cyan); padding: .2rem .75rem .5rem; border-bottom: 1px solid rgba(117,250,226,.1); margin-bottom: .35rem; }
.nav-dropdown-menu a { display: flex !important; align-items: center !important; padding: .45rem .75rem !important; border-radius: 8px !important; font-size: .72rem !important; font-weight: 500 !important; color: rgba(180,195,230,.8) !important; text-transform: none !important; letter-spacing: .01em !important; transition: background .18s, color .18s !important; white-space: nowrap; }
.nav-dropdown-menu a:hover { background: rgba(117,250,226,.08) !important; color: var(--white) !important; }
.hamburger { display: none; background: none; border: none; cursor: pointer; width: 28px; height: 20px; position: relative; z-index: 200; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.hamburger span { display: block; width: 100%; height: 2px; background: #fff; position: absolute; left: 0; transition: .3s; }
.hamburger span:nth-child(1) { top: 0; } .hamburger span:nth-child(2) { top: 9px; } .hamburger span:nth-child(3) { top: 18px; }
.hamburger.active span:nth-child(1) { top: 9px; transform: rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 9px; transform: rotate(-45deg); }

/* ====== REVEAL ====== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: .1s; } .reveal-d2 { transition-delay: .2s; } .reveal-d3 { transition-delay: .3s; }

/* ====== PRODUCT HERO ====== */
.product-hero { min-height: 88vh; display: flex; align-items: center; padding: 7rem 2rem 5rem; position: relative; overflow: hidden; }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(100px); pointer-events: none; animation: orbFloat 8s ease-in-out infinite; }
.hero-orb-1 { width: 600px; height: 600px; top: -200px; right: -150px; background: radial-gradient(circle, rgba(117,250,226,.18), transparent 70%); }
.hero-orb-2 { width: 500px; height: 500px; bottom: -150px; left: -100px; background: radial-gradient(circle, rgba(123,79,245,.15), transparent 70%); animation-delay: 3s; }
.hero-orb-3 { width: 350px; height: 350px; top: 40%; left: 50%; background: radial-gradient(circle, rgba(86,15,243,.12), transparent 70%); animation-delay: 5s; }
@keyframes orbFloat { 0%,100% { transform: translate(0,0) scale(1); } 33% { transform: translate(30px,-20px) scale(1.05); } 66% { transform: translate(-20px,15px) scale(.95); } }
.hero-grid-bg { position: absolute; inset: 0; background-image: linear-gradient(rgba(117,250,226,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(117,250,226,.03) 1px, transparent 1px); background-size: 80px 80px; mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, black, transparent); pointer-events: none; }
.product-hero .container { position: relative; z-index: 1; width: 100%; }
.product-hero-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 4.5rem; align-items: center; }

/* Breadcrumb */
.breadcrumb { display: flex; align-items: center; gap: .5rem; margin-bottom: 1.25rem; animation: fadeUp .7s ease both; }
.breadcrumb a { font-family: var(--font-display); font-size: .72rem; font-weight: 500; color: var(--text-muted); text-decoration: none; text-transform: uppercase; letter-spacing: .04em; transition: color .2s; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb .bc-sep { color: var(--border-light); font-size: .72rem; user-select: none; }
.breadcrumb .bc-current { font-family: var(--font-display); font-size: .72rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .04em; }

/* Category badge */
.cat-badge { display: inline-flex; align-items: center; gap: .5rem; background: var(--surface); border: 1px solid var(--border-light); padding: .4rem .8rem .4rem .55rem; border-radius: 100px; margin-bottom: 1.25rem; animation: fadeUp .7s .08s ease both; }
.cat-badge svg { width: 14px; height: 14px; color: var(--cyan); }
.cat-badge span { font-family: var(--font-display); font-size: .65rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--cyan); }

/* Titles & text */
.product-hero h1 { font-family: var(--font-display); font-size: clamp(2.2rem, 4.5vw, 3.8rem); line-height: 1.08; font-weight: 700; letter-spacing: -.01em; margin-bottom: 1rem; animation: fadeUp .7s .14s ease both; }
.product-tagline { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 1.75rem; max-width: 500px; animation: fadeUp .7s .2s ease both; }

/* Cert logos hero */
.hero-cert-logos { display: flex; flex-wrap: wrap; align-items: center; gap: .65rem; margin-bottom: 2rem; animation: fadeUp .7s .25s ease both; }
.hero-cert-logos img { height: 52px; width: auto; opacity: .85; transition: opacity .3s, transform .3s; border-radius: 8px; background: rgba(255,255,255,.92); padding: 5px 10px; }
.hero-cert-logos img:hover { opacity: 1; transform: scale(1.06); }

/* CTA row */
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; animation: fadeUp .7s .3s ease both; }
.btn-primary { display: inline-flex; align-items: center; gap: .5rem; background: var(--cyan); color: var(--navy-deep); padding: .85rem 2rem; border-radius: 100px; font-family: var(--font-display); font-size: .85rem; font-weight: 700; text-decoration: none; border: none; cursor: pointer; letter-spacing: .03em; text-transform: uppercase; transition: box-shadow .3s, transform .25s; position: relative; overflow: hidden; }
.btn-primary::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, transparent, rgba(255,255,255,.28), transparent); transform: translateX(-100%); transition: transform .5s; }
.btn-primary:hover::before { transform: translateX(100%); }
.btn-primary:hover { box-shadow: 0 0 35px rgba(117,250,226,.4); transform: translateY(-2px); }
.btn-ghost { display: inline-flex; align-items: center; gap: .5rem; background: transparent; color: var(--text-primary); padding: .85rem 2rem; border-radius: 100px; font-family: var(--font-display); font-size: .85rem; font-weight: 500; text-decoration: none; letter-spacing: .03em; text-transform: uppercase; border: 1px solid var(--border-light); transition: border-color .3s, background .3s; }
.btn-ghost:hover { border-color: var(--cyan); background: var(--cyan-dim); }

/* Product visual (right) */
.product-hero-visual { position: relative; animation: fadeUp .8s .35s ease both; }
.product-img-frame { width: 100%; aspect-ratio: 4/3; border-radius: var(--radius-xl); overflow: hidden; background: var(--navy-darker); border: 1px solid var(--border-light); position: relative; }
.product-img-frame::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(117,250,226,.06) 0%, transparent 60%); pointer-events: none; z-index: 1; }
.product-img-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; display: block; }
.product-img-frame:hover img { transform: scale(1.04); }

/* Floating stat chips */
.hero-stat { position: absolute; background: rgba(26,36,64,.88); backdrop-filter: blur(16px); border: 1px solid var(--border-light); border-radius: var(--radius); padding: .6rem 1rem; font-family: var(--font-display); font-size: .7rem; font-weight: 600; display: flex; align-items: center; gap: .45rem; z-index: 3; }
.hero-stat-1 { top: -14px; right: 24px; animation: floatCard 5s ease-in-out infinite; }
.hero-stat-2 { bottom: 20px; left: -18px; animation: floatCard 5s 2s ease-in-out infinite; }
.stat-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); flex-shrink: 0; }
.stat-dot-purple { background: var(--purple); box-shadow: 0 0 8px var(--purple); }
@keyframes floatCard { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* ====== SECTION COMMON ====== */
section { padding: 5.5rem 0; position: relative; }
.section-label { display: inline-flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-size: .72rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); margin-bottom: 1rem; }
.section-label::before { content: ''; width: 24px; height: 2px; background: linear-gradient(90deg, var(--cyan), var(--purple)); display: block; }
.section-title { font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1.15; font-weight: 700; letter-spacing: -.01em; margin-bottom: .75rem; }

/* ====== VIDEO SECTION ====== */
.video-section { background: var(--navy); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 4rem 0; }
.video-section-inner { display: grid; grid-template-columns: 1fr 2fr; gap: 3.5rem; align-items: center; }
.video-label h2 { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; margin-bottom: .5rem; }
.video-label p { font-size: .9rem; color: var(--text-muted); line-height: 1.7; }
.video-wrap { position: relative; width: 100%; padding-bottom: 56.25%; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-light); background: #000; box-shadow: 0 30px 70px rgba(0,0,0,.4); }
.video-wrap iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }
/* Façade */
.yt-facade { position: absolute; inset: 0; cursor: pointer; }
.yt-thumb { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s ease, filter .4s ease; filter: brightness(.85); }
.yt-facade:hover .yt-thumb { transform: scale(1.03); filter: brightness(.7); }
.yt-play {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 72px; height: 72px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(10,15,30,.72); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  transition: background .25s, transform .25s;
  box-shadow: 0 0 0 2px rgba(255,255,255,.12);
}
.yt-facade:hover .yt-play { background: var(--cyan); transform: translate(-50%, -50%) scale(1.08); }
.yt-play svg { width: 28px; height: 28px; fill: #fff; margin-left: 3px; }
.yt-facade:hover .yt-play svg { fill: var(--navy-deep); }

/* ====== DESCRIPTION SECTION ====== */
.desc-section { background: var(--navy-deep); }
.desc-grid { display: grid; grid-template-columns: 1fr 1.8fr; gap: 5rem; align-items: start; }
.desc-label-col { position: sticky; top: 7rem; }
.desc-text p { font-size: .95rem; color: var(--text-secondary); line-height: 1.85; margin-bottom: 1rem; }
.desc-text p:last-child { margin-bottom: 0; }
.desc-text p strong { color: var(--text-primary); }
.desc-text .tech-p { color: var(--text-muted); font-size: .9rem; }
.desc-text .tech-p strong { color: var(--text-secondary); }

/* ====== BENEFITS + SPECS ====== */
.benspec-section { background: var(--navy); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.benspec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.benspec-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem; transition: border-color .3s, transform .3s; }
.benspec-card:hover { border-color: rgba(117,250,226,.2); transform: translateY(-3px); }
.benspec-card h3 { font-family: var(--font-display); font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan); margin-bottom: 1.25rem; display: flex; align-items: center; gap: .5rem; }
.benspec-card h3::before { content: ''; width: 20px; height: 2px; background: linear-gradient(90deg, var(--cyan), var(--purple)); display: block; flex-shrink: 0; }
.benefits-list { list-style: none; display: flex; flex-direction: column; gap: .7rem; }
.benefits-list li { display: flex; align-items: flex-start; gap: .6rem; font-size: .88rem; color: var(--text-secondary); line-height: 1.55; }
.benefits-list li svg { flex-shrink: 0; margin-top: 2px; }
.specs-table { width: 100%; border-collapse: collapse; }
.specs-table tr { border-bottom: 1px solid var(--border); transition: background .2s; }
.specs-table tr:last-child { border-bottom: none; }
.specs-table tr:hover { background: var(--surface-hover); }
.specs-table td { padding: .65rem .5rem; font-size: .84rem; vertical-align: top; }
.specs-table td:first-child { color: var(--text-muted); font-weight: 500; width: 42%; white-space: nowrap; }
.specs-table td:last-child { color: var(--text-secondary); }

/* ====== INSTALLATION ====== */
.install-section { background: var(--navy-darker); border-top: 1px solid var(--border); }
.install-header { margin-bottom: 2rem; }
.install-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1rem; }
.install-grid-4 { grid-template-columns: repeat(4, 1fr); }
.install-item { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: var(--navy-deep); transition: border-color .3s, transform .3s, box-shadow .3s; }
.install-item:hover { border-color: rgba(117,250,226,.2); transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0,0,0,.2); }
.install-item img { width: 100%; height: 155px; object-fit: cover; object-position: top; display: block; transition: transform .4s; }
.install-item:hover img { transform: scale(1.05); }
.install-item span { display: block; padding: .55rem .75rem; font-size: .7rem; color: var(--text-muted); line-height: 1.4; }
.install-note { margin-top: 1.5rem; font-size: .78rem; color: var(--text-secondary); font-weight: 400; line-height: 1.6; }
.install-warning-banner { margin-top: 1.5rem; background: #c0392b; border-radius: var(--radius); padding: 1.25rem 2rem; text-align: center; font-size: .82rem; font-weight: 600; color: #fff; letter-spacing: .07em; text-transform: uppercase; }

/* STOPKit concept & positioner info blocks */
.stopkit-info { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; margin-bottom: 2.5rem; padding-bottom: 2.5rem; border-bottom: 1px solid var(--border); }
.stopkit-info-text h3 { font-size: 1.15rem; font-weight: 600; color: var(--text-primary); margin-bottom: .85rem; }
.stopkit-info-text p { font-size: .88rem; color: var(--text-secondary); line-height: 1.75; }
.stopkit-info-img img { width: 100%; border-radius: var(--radius); display: block; }
.stopkit-patented { margin-top: 1.25rem; }
.stopkit-patented img { height: 55px; }
@media (max-width: 768px) { .stopkit-info { grid-template-columns: 1fr; } }

/* Install sub-groups (ROLLERKiT suporte vs tubulação) */
.install-subgroup { margin-bottom: 2rem; }
.install-subgroup + .install-subgroup { padding-top: 2rem; border-top: 1px solid var(--border); }
.install-subgroup-title { font-size: 1rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 1rem; }

/* Tank types suitability block (PATCH) */
.tank-types { margin-bottom: 2.5rem; padding-bottom: 2.5rem; border-bottom: 1px solid var(--border); }
.tank-types-title { font-size: .95rem; color: var(--text-secondary); font-weight: 500; margin-bottom: 1.25rem; line-height: 1.5; }
.tank-types-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.tank-types-grid img { width: 100%; border-radius: var(--radius); aspect-ratio: 4/3; object-fit: cover; display: block; }
@media (max-width: 768px) { .tank-types-grid { grid-template-columns: repeat(2, 1fr); } }

/* Subsea tool blocks (BOBiPREG® + Alças Submarinas) */
.install-intro { font-size: .95rem; color: var(--text-secondary); line-height: 1.75; margin-bottom: 1rem; max-width: 820px; }
.subsea-tool-block { margin-top: 3rem; padding-top: 2.5rem; border-top: 1px solid var(--border); }
.subsea-tool-title { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--cyan); margin-bottom: .75rem; }
.subsea-tool-desc { font-size: .95rem; color: var(--text-secondary); line-height: 1.75; margin-bottom: 1.5rem; max-width: 720px; }

/* Full-width install image (R1D composite) */
.install-img-full { margin-bottom: 1.25rem; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: #fff; }
.install-img-full img { width: 100%; height: auto; display: block; }
.install-notes { display: flex; flex-wrap: wrap; gap: .65rem; margin-bottom: 1rem; }
.install-note-tag { font-size: .75rem; font-weight: 600; padding: .35rem .85rem; border-radius: 100px; background: rgba(117,250,226,.08); border: 1px solid rgba(117,250,226,.18); color: var(--cyan); }
.install-note-tag-alt { background: rgba(123,79,245,.08); border-color: rgba(123,79,245,.18); color: var(--purple); }

/* R1D application types */
.r1d-apps { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 2rem; }
.r1d-app-block { background: var(--navy-deep); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.r1d-app-title { font-family: var(--font-display); font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 1rem; }
.r1d-app-title.cyan { color: var(--cyan); }
.r1d-app-title.purple { color: var(--purple); }
.r1d-temp { display: inline-block; font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--white); margin-bottom: .75rem; }
.r1d-app-items { display: flex; flex-direction: column; gap: .75rem; }
.r1d-app-item strong { display: block; font-size: .85rem; font-weight: 600; color: var(--text-primary); }
.r1d-app-item p { font-size: .75rem; color: var(--text-muted); margin-top: .2rem; line-height: 1.5; }
@media (max-width: 600px) { .r1d-apps { grid-template-columns: 1fr; } }

/* R1D install step sprite crops */
.r1d-step {
  width: 100%; height: 155px;
  background-image: url('../assets/images/rd1.png');
  background-size: 600% auto;
  background-repeat: no-repeat;
  background-position: 0% top;
  transition: transform .4s;
}
.install-item:hover .r1d-step { transform: scale(1.05); }
.r1d-s1 { background-position: 0% top; }
.r1d-s2 { background-position: 20% top; }
.r1d-s3 { background-position: 40% top; }
.r1d-s4 { background-position: 60% top; }
.r1d-s5 { background-position: 80% top; }
.r1d-s6 { background-position: 100% top; }

/* ====== COMPLEMENTARY PRODUCT ====== */
.comp-section { background: var(--navy-deep); border-top: 1px solid var(--border); }
.comp-card { background: linear-gradient(135deg, rgba(117,250,226,.04), rgba(123,79,245,.06)); border: 1px solid var(--border-light); border-radius: var(--radius-lg); padding: 2rem 2.25rem; display: flex; gap: 2rem; align-items: flex-start; transition: border-color .3s; }
.comp-card:hover { border-color: rgba(117,250,226,.2); }
.comp-icon { width: 50px; height: 50px; background: var(--cyan-dim); border: 1px solid rgba(117,250,226,.2); border-radius: 14px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.comp-icon svg { width: 22px; height: 22px; color: var(--cyan); }
.comp-body strong { font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; color: var(--cyan); display: block; margin-bottom: .4rem; }
.comp-body p { font-size: .9rem; color: var(--text-secondary); line-height: 1.72; }

/* ====== CTA ====== */
.cta-section { padding: 6rem 0; background: var(--navy); border-top: 1px solid var(--border); }
.cta-box { background: linear-gradient(135deg, var(--navy-darker), rgba(123,79,245,.12), var(--navy-darker)); border-radius: var(--radius-xl); padding: 4.5rem 4rem; text-align: center; position: relative; overflow: hidden; border: 1px solid var(--border-light); }
.cta-box::before { content: ''; position: absolute; top: -150px; right: -150px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(117,250,226,.1), transparent 60%); pointer-events: none; }
.cta-box::after { content: ''; position: absolute; bottom: -100px; left: -100px; width: 350px; height: 350px; background: radial-gradient(circle, rgba(123,79,245,.08), transparent 60%); pointer-events: none; }
.cta-box .section-label { justify-content: center; }
.cta-box .section-title { position: relative; z-index: 1; }
.cta-box > p { color: var(--text-secondary); font-size: .98rem; max-width: 480px; margin: 0 auto 2.5rem; position: relative; z-index: 1; line-height: 1.75; }
.btn-glow { display: inline-flex; align-items: center; gap: .5rem; background: var(--cyan); color: var(--navy-deep); padding: 1rem 2.5rem; border-radius: 100px; font-family: var(--font-display); font-size: .9rem; font-weight: 700; text-decoration: none; letter-spacing: .04em; text-transform: uppercase; transition: box-shadow .35s, transform .25s; position: relative; z-index: 1; }
.btn-glow:hover { box-shadow: 0 0 50px rgba(117,250,226,.4), 0 0 100px rgba(117,250,226,.12); transform: translateY(-2px); }
.btn-glow svg { flex-shrink: 0; }

/* ====== CERT LOGOS (generic) ====== */
.cert-logos-row { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: .75rem; }
.cert-logos-row img { height: 52px; width: auto; opacity: .85; transition: opacity .3s, transform .3s; border-radius: 8px; background: rgba(255,255,255,.92); padding: 5px 10px; }
.cert-logos-row img:hover { opacity: 1; transform: scale(1.05); }

/* ====== FOOTER ====== */
footer { background: var(--navy-darker); border-top: 1px solid var(--border); padding: 4rem 0 2rem; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid var(--border); }
.footer-brand { display: flex; flex-direction: column; gap: 1rem; }
.footer-brand img { height: 32px; width: auto; align-self: flex-start; }
.footer-brand p { font-size: .85rem; color: var(--text-muted); line-height: 1.7; max-width: 280px; }
.footer-social { display: flex; gap: 1.25rem; margin-top: 1.25rem; }
.footer-social a { position: relative; width: 46px; height: 46px; display: inline-flex; align-items: center; justify-content: center; border-radius: 14px; color: #75fae2; background: rgba(117, 250, 226, .06); border: 1px solid rgba(117, 250, 226, .18); transition: transform .4s cubic-bezier(.16, 1, .3, 1), background .35s, box-shadow .4s, border-color .35s; }
.footer-social a::before { content: ''; position: absolute; inset: 0; border-radius: 14px; padding: 1px; background: linear-gradient(135deg, var(--cyan), var(--purple)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .35s ease; pointer-events: none; }
.footer-social a svg { transition: transform .4s cubic-bezier(.16, 1, .3, 1); }
.footer-social a:hover { background: rgba(117, 250, 226, .12); transform: translateY(-3px); box-shadow: 0 14px 32px -10px rgba(117, 250, 226, .45); border-color: transparent; }
.footer-social a:hover::before { opacity: 1; }
.footer-social a:hover svg { transform: scale(1.12); }
.footer-col h4 { font-family: var(--font-display); font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan); margin-bottom: 1rem; }
.footer-col a { display: block; font-size: .84rem; color: var(--text-muted); text-decoration: none; margin-bottom: .6rem; transition: color .2s; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; font-size: .72rem; color: var(--text-muted); }

/* ====== RESPONSIVE ====== */
@media (max-width: 1024px) {
  .product-hero-layout { grid-template-columns: 1fr; gap: 3rem; }
  .product-hero-visual { max-width: 520px; margin: 0 auto; }
  .video-section-inner { grid-template-columns: 1fr; gap: 2rem; }
  .desc-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .desc-label-col { position: static; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  nav { padding: 1rem 1.25rem; border-bottom-color: var(--border); }
  nav::before { opacity: 1; background: rgba(17,26,48,.96); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .nav-links { display: flex; flex-direction: column; position: fixed; inset: 0; background: var(--navy-deep); justify-content: center; align-items: center; gap: 2rem; z-index: 9000; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .22s ease, visibility .22s ease; }
  .nav-links.open { opacity: 1; visibility: visible; pointer-events: auto; }
  .nav-links a { font-size: 1.1rem; }
  .hamburger { display: block; z-index: 9001; }
  .nav-dropdown { display: contents; }
  .ndrop-chevron { display: none !important; }
  .nav-dropdown-menu { display: none !important; }
  .product-hero { padding: 6rem 1.5rem 3.5rem; min-height: auto; }
  .product-hero h1 { font-size: 2.1rem; }
  .hero-stat { display: none; }
  section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }
  .benspec-grid { grid-template-columns: 1fr; }
  .install-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .install-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cta-box { padding: 3rem 1.75rem; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: .5rem; text-align: center; }
  .comp-card { flex-direction: column; gap: 1rem; }
}
@media (max-width: 480px) {
  .install-grid { grid-template-columns: 1fr 1fr; }
  .install-grid-4 { grid-template-columns: 1fr 1fr; }
  .hero-cert-logos img { height: 40px; }
}