:root {
  --black: #0d0d0d;
  --graphite: #242629;
  --gray: #777c82;
  --line: #d9dbdd;
  --warm: #f5f5f3;
  --white: #ffffff;
  --orange: #ff6a00;
  --green: #1e6b3c;
  --lime: #a5ff32;
  --max: 1180px;
  --shadow: 0 28px 70px rgba(0,0,0,.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--black); background: var(--white); font-family: Inter, Avenir Next, Avenir, "Segoe UI", Arial, sans-serif; line-height: 1.55; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.section { padding: 112px 0; }
.section-light { background: var(--warm); }
.hidden, .sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.skip-link { position: fixed; z-index: 999; left: 12px; top: 12px; transform: translateY(-150%); background: #fff; padding: 10px 16px; border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; height: 82px; display: flex; align-items: center; color: #fff; transition: background .25s, box-shadow .25s, height .25s; }
.site-header.scrolled { background: rgba(13,13,13,.95); box-shadow: 0 8px 30px rgba(0,0,0,.18); height: 70px; backdrop-filter: blur(15px); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; min-width: max-content; }
.brand-mark { width: 50px; color: currentColor; }
.brand-text { font-weight: 900; font-size: 25px; letter-spacing: -.06em; font-style: italic; }
.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 700; }
.site-nav > a { text-decoration: none; opacity: .84; }
.site-nav > a:hover { opacity: 1; }
.menu-toggle { display: none; background: none; border: 0; padding: 8px; }
.menu-toggle span:not(.sr-only) { display: block; width: 24px; height: 2px; background: #fff; margin: 5px; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; background: var(--orange); color: #fff; border: 2px solid var(--orange); border-radius: 5px; text-decoration: none; font-weight: 800; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(255,106,0,.25); background: #ed6300; }
.button-small { min-height: 42px; padding: 0 17px; opacity: 1 !important; }
.text-link { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.4); padding-bottom: 4px; }

.hero { min-height: 790px; position: relative; display: flex; align-items: center; overflow: hidden; color: #fff; background: radial-gradient(circle at 78% 42%, #393d3f 0, #181a1c 28%, #0b0c0d 60%); padding: 130px 0 70px; }
.hero::before { content: ""; position: absolute; width: 720px; height: 720px; border: 1px solid rgba(255,255,255,.08); border-radius: 50%; right: -190px; top: 30px; box-shadow: 0 0 0 120px rgba(255,255,255,.02), 0 0 0 240px rgba(255,255,255,.012); }
.hero-grid { position: absolute; inset: 0; opacity: .12; background-image: linear-gradient(rgba(255,255,255,.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.1) 1px, transparent 1px); background-size: 55px 55px; mask-image: linear-gradient(90deg, rgba(0,0,0,.6), transparent 70%); }
.hero-layout { position: relative; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 50px; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 18px; text-transform: uppercase; font-size: 12px; font-weight: 900; letter-spacing: .2em; color: var(--gray); }
.eyebrow span { display: inline-block; width: 34px; height: 3px; background: var(--orange); }
.eyebrow-dark { color: rgba(255,255,255,.55); }
.hero .eyebrow { color: rgba(255,255,255,.62); }
.hero h1 { margin: 0; max-width: 720px; font-size: clamp(54px, 6vw, 88px); line-height: .96; letter-spacing: -.065em; text-transform: uppercase; }
.hero h1 em { color: var(--orange); font-style: normal; }
.hero-lede { max-width: 640px; font-size: 19px; color: rgba(255,255,255,.7); margin: 28px 0; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin: 34px 0 42px; }
.hero-notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; border-top: 1px solid rgba(255,255,255,.15); padding-top: 23px; }
.hero-notes div { display: flex; flex-direction: column; gap: 4px; }
.hero-notes strong { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }
.hero-notes span { color: rgba(255,255,255,.48); font-size: 12px; }

.hero-visual { position: relative; min-height: 560px; display: grid; place-items: center; }
.cable { position: absolute; left: -8%; right: -20%; top: 43%; height: 8px; border-radius: 20px; background: linear-gradient(#9da3a7, #393e42 45%, #111 50%, #777c80); transform: rotate(-5deg); box-shadow: 0 4px 8px rgba(0,0,0,.4); }
.cable-back { z-index: 0; }
.cable-front { z-index: 5; clip-path: polygon(0 0, 100% 0, 100% 100%, 61% 100%, 61% 0, 43% 0, 43% 100%, 0 100%); }
.product-illustration { position: relative; z-index: 2; width: 410px; height: 445px; transform: rotate(-5deg); filter: drop-shadow(0 35px 30px rgba(0,0,0,.45)); }
.frame-top { position: absolute; left: 92px; top: 125px; width: 230px; height: 61px; background: linear-gradient(110deg, #44494d, #0a0b0c 32%, #191b1d 65%, #4b5054); border-radius: 22px 22px 10px 10px; clip-path: polygon(0 16%, 8% 0, 92% 0, 100% 16%, 93% 100%, 7% 100%); }
.frame-side { position: absolute; top: 165px; width: 74px; height: 207px; background: linear-gradient(90deg, #454a4d, #08090a 35%, #25282a 80%, #111); border-radius: 12px 12px 26px 26px; }
.frame-side-left { left: 80px; transform: skewY(3deg); }
.frame-side-right { right: 74px; transform: skewY(-3deg); }
.frame-side::after { content: ""; position: absolute; width: 27px; height: 65px; border: 8px solid #0a0b0c; border-radius: 16px; bottom: 20px; left: 23px; }
.wheel { position: absolute; top: 47px; width: 128px; height: 128px; border-radius: 50%; background: radial-gradient(circle at 43% 38%, #303438, #090a0b 58%, #3d4246 60%, #111 72%); border: 7px solid #545a5f; box-shadow: inset 0 0 0 5px #0a0b0c; z-index: 3; }
.wheel-one { left: 52px; }
.wheel-two { right: 45px; }
.wheel span { position: absolute; inset: 37px; border-radius: 50%; background: radial-gradient(circle, #202326 0 28%, #aeb4b9 30% 54%, #282c2f 56%); }
.wheel::after { content: ""; position: absolute; width: 100px; height: 24px; left: 7px; top: 42px; border-top: 10px solid #040505; border-radius: 50%; }
.impact-block { position: absolute; z-index: 4; left: 65px; bottom: 16px; width: 285px; height: 90px; border-radius: 18px 18px 26px 26px; background: linear-gradient(145deg, #c3ff69, #8ded22 55%, #5ea90c); border: 4px solid #315a08; box-shadow: inset 0 8px 14px rgba(255,255,255,.25), inset 0 -10px 18px rgba(40,80,0,.28); }
.impact-block span { position: absolute; inset: 0; display: grid; place-items: center; color: #1c2a0b; font-weight: 950; letter-spacing: .18em; font-size: 20px; transform: skewX(-6deg); }
.anchor-slot { position: absolute; z-index: 4; left: 170px; top: 267px; width: 75px; height: 31px; border: 8px solid #050606; border-radius: 20px; }
.hardware { position: absolute; z-index: 4; top: 139px; width: 23px; height: 23px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fafafa, #83898d 40%, #333 70%); }
.hardware-one { left: 104px; }
.hardware-two { right: 96px; }
.hero-badge { position: absolute; z-index: 8; right: -18px; top: 58px; width: 118px; height: 118px; display: grid; align-content: center; text-align: center; border-radius: 50%; background: var(--orange); color: var(--black); box-shadow: var(--shadow); transform: rotate(7deg); }
.hero-badge strong { font-size: 37px; line-height: 1; font-style: italic; }
.hero-badge span { font-size: 7px; letter-spacing: .12em; font-weight: 900; margin-top: 7px; }
.concept-note { position: absolute; bottom: 0; right: 0; color: rgba(255,255,255,.35); font-size: 11px; }

.trust-strip { background: var(--orange); color: var(--black); }
.trust-grid { min-height: 92px; display: grid; grid-template-columns: repeat(4, 1fr); align-items: center; }
.trust-grid div { display: flex; align-items: center; justify-content: center; gap: 12px; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; border-right: 1px solid rgba(0,0,0,.18); }
.trust-grid div:last-child { border: 0; }
.trust-icon { font-size: 20px; }

.section-heading { max-width: 760px; margin-bottom: 56px; }
.section-heading h2, .engineering-copy h2, .safety-panel h2, .about-copy h2, .signup-wrap h2, .contact-copy h2 { margin: 0 0 20px; font-size: clamp(40px, 5vw, 66px); line-height: 1; letter-spacing: -.055em; }
.section-heading > p:last-child, .engineering-copy > p, .about-copy > p, .signup-wrap > div > p:last-child, .contact-copy > p:last-child { color: #666b70; font-size: 18px; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step-card { position: relative; min-height: 360px; padding: 30px; background: #fff; border: 1px solid #e3e4e4; overflow: hidden; transition: transform .25s, box-shadow .25s; }
.step-card:hover { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(0,0,0,.08); }
.step-number { color: var(--orange); font-size: 12px; font-weight: 900; letter-spacing: .15em; }
.step-card h3 { font-size: 22px; margin: 22px 0 10px; letter-spacing: -.025em; }
.step-card p { color: #686d71; font-size: 14px; }
.step-graphic { height: 120px; position: relative; margin: 27px -5px 8px; }
.step-graphic::before { content: ""; position: absolute; left: 0; right: 0; top: 52px; height: 4px; background: #a7aaac; transform: rotate(-4deg); }
.step-graphic i { position: absolute; width: 65px; height: 65px; border-radius: 50%; background: #141617; border: 5px solid #575c60; z-index: 2; top: 18px; }
.step-graphic i::after { content: ""; position: absolute; inset: 20px; background: #9da2a6; border-radius: 50%; }
.step-graphic b { position: absolute; z-index: 3; width: 65px; height: 48px; background: var(--lime); border-radius: 10px; top: 67px; }
.guide i { left: 30px; }
.guide b { left: 30px; }
.impact i { left: 15px; }
.impact b { right: 15px; }
.decel i { right: 22px; }
.decel b { right: 22px; }
.decel::after { content: "← ← ←"; position: absolute; left: 10px; top: 17px; color: var(--orange); letter-spacing: 8px; font-weight: 900; }
.reset i { left: 30px; }
.reset b { left: 30px; }
.reset::after { content: "↶"; position: absolute; right: 20px; top: 0; font-size: 70px; color: var(--orange); }

.engineering-section { color: #fff; background: var(--black); overflow: hidden; }
.engineering-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: center; }
.engineering-copy > p { color: rgba(255,255,255,.58); }
.feature-list { list-style: none; padding: 0; margin: 42px 0 0; border-top: 1px solid rgba(255,255,255,.13); }
.feature-list li { display: grid; grid-template-columns: 52px 1fr; gap: 15px; padding: 22px 0; border-bottom: 1px solid rgba(255,255,255,.13); }
.feature-list li > span { color: var(--orange); font-size: 12px; font-weight: 900; letter-spacing: .1em; padding-top: 4px; }
.feature-list strong { display: block; margin-bottom: 6px; }
.feature-list p { margin: 0; color: rgba(255,255,255,.48); font-size: 14px; }
.exploded-card { position: relative; min-height: 640px; border: 1px solid rgba(255,255,255,.1); background: radial-gradient(circle at 45% 40%, #303437, #151719 58%, #0b0c0d); box-shadow: 0 40px 90px rgba(0,0,0,.4); }
.exploded-card::before { content: ""; position: absolute; inset: 0; opacity: .15; 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: 35px 35px; }
.exploded-svg { position: absolute; inset: 65px 25px 60px; width: calc(100% - 50px); height: calc(100% - 125px); }
.diagram-label { position: absolute; z-index: 2; font-size: 10px; text-transform: uppercase; letter-spacing: .14em; color: rgba(255,255,255,.65); }
.diagram-label span { position: absolute; height: 1px; background: var(--orange); top: 50%; }
.label-a { top: 45px; left: 28px; }
.label-a span { width: 100px; left: calc(100% + 12px); }
.label-b { right: 25px; top: 250px; }
.label-b span { width: 80px; right: calc(100% + 12px); }
.label-c { left: 30px; bottom: 85px; }
.label-c span { width: 80px; left: calc(100% + 12px); }
.spec-chips { position: absolute; left: 22px; right: 22px; bottom: 20px; display: flex; justify-content: space-between; gap: 12px; }
.spec-chips span { padding: 8px 10px; border: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.35); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }

.safety-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: start; }
.safety-panel { display: grid; grid-template-columns: 90px 1fr; gap: 28px; padding: 45px; background: #fff; border: 1px solid #e0e1e2; }
.safety-mark { width: 80px; height: 80px; display: grid; place-items: center; background: var(--orange); font-size: 50px; font-weight: 950; }
.safety-panel h2 { font-size: clamp(38px, 4.4vw, 60px); }
.safety-panel p:last-child { color: #656a6e; }
.safety-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.safety-cards article { padding: 30px; background: #fff; border: 1px solid #e0e1e2; min-height: 190px; }
.safety-cards strong { display: block; margin-bottom: 14px; font-size: 17px; }
.safety-cards p { margin: 0; color: #6d7276; font-size: 14px; }

.about-section { color: #fff; background: #17191b; }
.about-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 80px; align-items: center; }
.about-visual { position: relative; height: 520px; overflow: hidden; border: 1px solid rgba(255,255,255,.1); background: linear-gradient(140deg, #25282a, #0b0c0d); }
.topo-lines { position: absolute; inset: -20%; opacity: .18; background: repeating-radial-gradient(ellipse at 45% 60%, transparent 0 18px, #fff 20px 21px, transparent 23px 35px); transform: rotate(-10deg); }
.about-logo { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.about-logo .kg { position: relative; font-size: 150px; line-height: .8; font-weight: 950; font-style: italic; letter-spacing: -.14em; color: #fff; text-shadow: 12px 12px 0 rgba(255,106,0,.8); }
.about-logo > span:last-child { font-size: 12px; letter-spacing: .22em; font-weight: 800; color: rgba(255,255,255,.55); margin-top: 35px; }
.about-copy > p { color: rgba(255,255,255,.55); }
.about-signoff { margin-top: 38px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.13); display: flex; flex-direction: column; gap: 4px; }
.about-signoff strong { color: var(--orange); }
.about-signoff span { color: rgba(255,255,255,.4); }

.faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 80px; }
.faq-list details { border-top: 1px solid #cfd1d2; padding: 22px 0; }
.faq-list details:last-child { border-bottom: 1px solid #cfd1d2; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 800; font-size: 18px; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; font-size: 26px; color: var(--orange); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { max-width: 760px; color: #686d71; }

.signup-section { color: #fff; background: var(--orange); }
.signup-wrap { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 80px; }
.signup-wrap h2 { color: var(--black); }
.signup-wrap > div > p:last-child { color: rgba(0,0,0,.64); }
.signup-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.signup-form input, .contact-form input, .contact-form select, .contact-form textarea { width: 100%; border: 1px solid transparent; border-radius: 4px; padding: 15px 16px; background: #fff; color: #111; outline: none; }
.signup-form input:focus, .contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--black); box-shadow: 0 0 0 3px rgba(0,0,0,.12); }
.signup-form .button { grid-column: 1 / -1; background: var(--black); border-color: var(--black); }
.form-note { grid-column: 1 / -1; margin: 3px 0 0; color: rgba(0,0,0,.5); font-size: 11px; }

.contact-section { color: #fff; background: #0d0d0d; }
.contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; align-items: start; }
.contact-copy > p:last-child { color: rgba(255,255,255,.5); }
.contact-form { display: grid; gap: 10px; }
.contact-form label { margin-top: 6px; color: rgba(255,255,255,.6); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.contact-form input, .contact-form select, .contact-form textarea { background: #1b1d1f; border-color: #33373a; color: #fff; }
.contact-form textarea { resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-row > div { display: grid; gap: 10px; }
.contact-form .button { justify-self: start; margin-top: 14px; }

.site-footer { color: #fff; background: #060707; border-top: 1px solid #252729; padding: 55px 0 22px; }
.footer-top { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: start; gap: 45px; }
.brand-footer { align-self: start; }
.footer-top p { margin: 0; color: rgba(255,255,255,.42); font-size: 13px; }
.footer-top p strong { color: var(--orange); }
.footer-top nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 20px; }
.footer-top nav a { color: rgba(255,255,255,.6); text-decoration: none; font-size: 13px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; margin-top: 45px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.3); font-size: 11px; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1050px) {
  .hero-layout, .engineering-layout, .safety-layout, .about-layout, .faq-layout, .signup-wrap, .contact-layout { grid-template-columns: 1fr; }
  .hero { padding-top: 150px; }
  .hero-copy { max-width: 800px; }
  .hero-visual { min-height: 500px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .engineering-copy { max-width: 760px; }
  .exploded-card { min-height: 600px; }
  .safety-cards { grid-template-columns: repeat(4, 1fr); }
  .safety-cards article { min-height: 175px; }
  .about-visual { height: 430px; }
  .faq-layout .section-heading { margin-bottom: 0; }
}

@media (max-width: 820px) {
  .site-header { background: rgba(13,13,13,.95); height: 70px; }
  .menu-toggle { display: block; }
  .site-nav { position: fixed; inset: 70px 0 auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 10px 20px 24px; background: #0d0d0d; border-top: 1px solid #2b2d2f; }
  .site-nav.open { display: flex; }
  .site-nav > a { padding: 14px 5px; border-bottom: 1px solid #26282a; }
  .site-nav .button { margin-top: 12px; }
  .hero-notes { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr 1fr; padding: 16px 0; }
  .trust-grid div { min-height: 48px; border: 0; }
  .safety-cards { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-top nav { grid-column: 1 / -1; justify-content: flex-start; }
}

@media (max-width: 620px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .section { padding: 78px 0; }
  .hero { min-height: auto; padding: 120px 0 55px; }
  .hero h1 { font-size: 51px; }
  .hero-lede { font-size: 16px; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 18px; }
  .text-link { align-self: flex-start; }
  .hero-visual { min-height: 415px; margin-top: 10px; overflow: hidden; }
  .product-illustration { transform: rotate(-5deg) scale(.76); }
  .hero-badge { right: 0; top: 32px; width: 90px; height: 90px; }
  .hero-badge strong { font-size: 28px; }
  .concept-note { left: 0; right: auto; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid div { justify-content: flex-start; padding-left: 10%; }
  .steps, .safety-cards { grid-template-columns: 1fr; }
  .step-card { min-height: 330px; }
  .exploded-card { min-height: 500px; }
  .diagram-label { display: none; }
  .exploded-svg { inset: 35px 0 70px; width: 100%; height: calc(100% - 105px); }
  .spec-chips { flex-direction: column; align-items: flex-start; }
  .safety-panel { grid-template-columns: 1fr; padding: 28px; }
  .safety-mark { width: 58px; height: 58px; font-size: 36px; }
  .about-visual { height: 350px; }
  .about-logo .kg { font-size: 110px; }
  .signup-form, .field-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-top nav { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

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