:root {
  --ink: #121923;
  --ink-2: #1d2835;
  --ink-3: #2c3947;
  --paper: #f7f8f9;
  --white: #ffffff;
  --line: #dde2e7;
  --muted: #66717e;
  --accent: #f5b800;
  --accent-2: #ffd34e;
  --radius: 18px;
  --shadow: 0 24px 70px rgba(14, 22, 31, .12);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea { font: inherit; }
::selection { background: var(--accent); color: var(--ink); }

.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 999; padding: 10px 14px; background: var(--white); color: var(--ink); border-radius: 8px; transform: translateY(-150%); transition: .2s; }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(18,25,35,.08);
  backdrop-filter: blur(14px);
}
.header-inner { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; text-decoration: none; flex: 0 0 auto; }
.brand img { width: 300px; height: auto; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { text-decoration: none; font-size: .93rem; font-weight: 650; color: #364351; transition: color .2s; }
.main-nav a:hover { color: var(--ink); }
.main-nav .nav-cta { padding: 10px 17px; color: var(--ink); background: var(--accent); border-radius: 999px; }
.menu-toggle { display: none; width: 46px; height: 42px; border: 0; background: transparent; padding: 9px; cursor: pointer; }
.menu-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--ink); transition: .2s; }

.hero { position: relative; overflow: hidden; background: linear-gradient(180deg,#fafbfc 0%,#fff 100%); }
.hero::before { content: ""; position: absolute; width: 640px; height: 640px; border-radius: 50%; right: -220px; top: -250px; background: radial-gradient(circle, rgba(245,184,0,.20), rgba(245,184,0,0) 68%); pointer-events: none; }
.hero-grid { min-height: 690px; display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 62px; padding-block: 72px 80px; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow { margin: 0 0 14px; text-transform: uppercase; letter-spacing: .16em; font-size: .76rem; font-weight: 850; color: #7b6205; }
.hero h1 { margin: 0; max-width: 760px; font-size: clamp(3.3rem, 6vw, 5.8rem); line-height: .98; letter-spacing: -.06em; font-weight: 850; }
.hero h1 span { position: relative; display: inline-block; }
.hero h1 span::after { content: ""; position: absolute; z-index: -1; left: -2%; right: -2%; bottom: .06em; height: .22em; background: var(--accent); transform: skewX(-12deg); opacity: .9; }
.hero-lead { max-width: 720px; margin: 28px 0 0; color: #56616d; font-size: 1.1rem; line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; align-items: center; }
.hero-actions-secondary { margin-top: 10px; }
.btn { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 10px; padding: 0 20px; border-radius: 9px; text-decoration: none; font-weight: 800; transition: transform .2s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 20px; height: 20px; fill: currentColor; }
.btn-primary { background: var(--accent); color: var(--ink); box-shadow: 0 10px 25px rgba(245,184,0,.24); }
.btn-primary:hover { background: var(--accent-2); box-shadow: 0 14px 28px rgba(245,184,0,.3); }
.phone-btn { min-width: 190px; white-space: nowrap; }
.phone-btn svg { flex: 0 0 auto; }
.btn-ghost { border: 1px solid #ccd3d9; background: var(--white); }
.btn-dark { background: var(--ink); color: var(--white); }
.btn.full { width: 100%; }
.hero-points { display: flex; flex-wrap: wrap; gap: 14px 28px; margin-top: 40px; padding-top: 24px; border-top: 1px solid #e0e4e8; }
.hero-points span { display: grid; gap: 2px; font-size: .82rem; color: #78828d; }
.hero-points b { color: var(--ink); font-size: .93rem; }

.hero-visual { position: relative; }
.hero-art-card { position: relative; min-height: 500px; border-radius: 28px; background: var(--ink); box-shadow: var(--shadow); overflow: hidden; }
.hero-art-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg,rgba(255,255,255,.05),transparent 50%); pointer-events: none; }
.hero-art-card > img { width: 100%; height: 100%; min-height: 500px; object-fit: cover; }
.hero-badge { position: absolute; z-index: 2; display: flex; align-items: center; gap: 10px; padding: 10px 14px; border: 1px solid rgba(255,255,255,.2); border-radius: 12px; background: rgba(18,25,35,.76); backdrop-filter: blur(10px); color: #fff; font-size: .82rem; font-weight: 750; box-shadow: 0 10px 30px rgba(0,0,0,.2); }
.hero-badge span { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; background: var(--accent); color: var(--ink); font-size: .75rem; }
.badge-one { left: 22px; bottom: 28px; }
.badge-two { right: 22px; top: 28px; }
.hero-stripe { height: 10px; background: repeating-linear-gradient(135deg,var(--accent) 0 18px,var(--ink) 18px 36px); }

.trust-strip { background: #fff; border-bottom: 1px solid var(--line); }
.trust-grid { min-height: 78px; display: grid; grid-template-columns: repeat(4,1fr); align-items: center; gap: 18px; }
.trust-grid div { display: flex; align-items: center; gap: 10px; color: #495563; font-size: .87rem; font-weight: 680; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px rgba(245,184,0,.14); }

.section { padding: 112px 0; }
.section-head { display: grid; grid-template-columns: 1fr .72fr; gap: 80px; align-items: end; margin-bottom: 52px; }
.section-head h2, .content-panel h2, .about-copy h2, .contact-copy h2 { margin: 0; font-size: clamp(2.25rem,4vw,4rem); line-height: 1.05; letter-spacing: -.045em; }
.section-head > p { margin: 0; color: var(--muted); line-height: 1.8; }
.section-head.light h2, .section-head.light > p { color: #fff; }
.section-head.light .eyebrow { color: var(--accent-2); }

.services { background: var(--paper); }
.service-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.service-card { min-height: 310px; padding: 34px; border: 1px solid #e0e4e8; border-radius: var(--radius); background: #fff; transition: transform .25s, box-shadow .25s, border-color .25s; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(18,25,35,.08); border-color: #d3d8de; }
.service-card-featured { grid-row: span 2; min-height: 642px; display: flex; flex-direction: column; justify-content: flex-start; padding: 44px; background: var(--ink); color: #fff; border-color: var(--ink); }
.service-card-featured p { color: #c9d0d7; }
.service-card-featured .card-kicker { color: var(--accent-2); }
.icon-wrap { width: 64px; height: 64px; display: grid; place-items: center; margin-bottom: 28px; border-radius: 16px; background: #f6f8fa; }
.service-card-featured .icon-wrap { background: #293646; }
.icon-wrap img { width: 38px; height: 38px; }
.card-kicker { margin: 0 0 8px; color: #9a7800; font-size: .72rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.service-card h3 { margin: 0 0 12px; font-size: 1.55rem; line-height: 1.2; letter-spacing: -.02em; }
.service-card p { margin: 0; color: var(--muted); }
.check-list { margin: auto 0 0; padding: 28px 0 0; list-style: none; border-top: 1px solid #334152; }
.check-list li { position: relative; padding: 7px 0 7px 28px; color: #dfe5ea; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 900; }

.brand-section { padding: 100px 0; background: var(--ink); color: #fff; }
.brand-cloud { display: grid; grid-template-columns: repeat(5,1fr); gap: 12px; }
.brand-cloud span { min-height: 74px; display: grid; place-items: center; padding: 12px; border: 1px solid #334152; border-radius: 12px; color: #e5eaee; font-size: .9rem; letter-spacing: .05em; font-weight: 850; background: #18222d; }
.brand-cloud .brand-more { color: var(--ink); background: var(--accent); border-color: var(--accent); }
.brand-note { margin: 18px 0 0; color: #7f8b97; font-size: .75rem; }

.battery-section { overflow: hidden; }
.split-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: center; }
.visual-panel { position: relative; min-height: 610px; border-radius: 28px; background: #eef1f3; overflow: hidden; }
.visual-panel img { width: 100%; height: 100%; min-height: 610px; object-fit: cover; }
.visual-label { position: absolute; left: 24px; right: 24px; bottom: 24px; display: grid; gap: 2px; padding: 18px 20px; border-radius: 12px; background: rgba(18,25,35,.9); color: #fff; }
.visual-label strong { font-size: 1rem; }
.visual-label span { color: #b7c0c9; font-size: .82rem; }
.content-panel .lead-small { margin: 22px 0 28px; color: var(--muted); font-size: 1.04rem; }
.feature-list { display: grid; gap: 2px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature-list > div { display: grid; grid-template-columns: 48px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.feature-list > div:last-child { border-bottom: 0; }
.feature-list > div > span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; background: #fff5cf; color: #7e6100; font-weight: 850; font-size: .76rem; }
.feature-list h3 { margin: 0 0 3px; font-size: 1rem; }
.feature-list p { margin: 0; color: var(--muted); font-size: .92rem; }
.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 26px; font-weight: 850; text-decoration: none; border-bottom: 2px solid var(--accent); }
.text-link span { transition: transform .2s; }
.text-link:hover span { transform: translateX(4px); }

.parts-section { background: var(--paper); }
.parts-layout { display: grid; grid-template-columns: 1.35fr .65fr; gap: 24px; align-items: start; }
.parts-main { display: grid; gap: 18px; }
.parts-visual { min-height: 315px; border-radius: 20px; overflow: hidden; background: var(--ink); border: 1px solid #22303d; box-shadow: 0 18px 42px rgba(18,25,35,.08); }
.parts-visual img { width: 100%; height: 100%; min-height: 315px; object-fit: cover; }
.parts-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
.parts-list span { min-height: 74px; display: flex; align-items: center; padding: 18px 22px; border: 1px solid var(--line); border-radius: 12px; background: #fff; font-weight: 740; }
.parts-list span::before { content: ""; width: 9px; height: 9px; margin-right: 13px; border-radius: 2px; background: var(--accent); transform: rotate(45deg); }
.parts-tip { padding: 34px; border-radius: 18px; background: var(--accent); }
.tip-label { margin: 0 0 6px; font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; font-weight: 850; }
.parts-tip h3 { margin: 0 0 18px; font-size: 1.7rem; line-height: 1.15; }
.parts-tip ol { margin: 0 0 28px; padding-left: 20px; }
.parts-tip li { padding: 4px 0; }

.process-section { padding: 102px 0; background: #18222d; color: #fff; }
.process-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.process-step { position: relative; min-height: 245px; padding: 28px; border: 1px solid #314050; border-radius: 14px; background: #1d2936; overflow: hidden; }
.process-step > span { display: inline-grid; place-items: center; width: 42px; height: 42px; margin-bottom: 42px; border-radius: 50%; background: var(--accent); color: var(--ink); font-size: .8rem; font-weight: 900; }
.process-step h3 { margin: 0 0 10px; font-size: 1.08rem; }
.process-step p { margin: 0; color: #aeb8c1; font-size: .9rem; }

.about-section { background: #fff; }
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 78px; align-items: start; }
.about-copy > p:not(.eyebrow) { max-width: 720px; color: var(--muted); font-size: 1.02rem; }
.about-facts { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-top: 34px; }
.about-facts > div { padding: 18px 0; border-top: 3px solid var(--ink); }
.about-facts strong { display: block; font-size: 1.7rem; letter-spacing: -.03em; }
.about-facts span { color: var(--muted); font-size: .78rem; }
.about-card { padding: 40px; border-radius: 22px; background: var(--paper); border: 1px solid var(--line); }
.big-check-list { margin: 18px 0 0; padding: 0; list-style: none; }
.big-check-list li { position: relative; padding: 13px 0 13px 36px; border-bottom: 1px solid #dce1e5; font-weight: 700; }
.big-check-list li:last-child { border-bottom: 0; }
.big-check-list li::before { content: "✓"; position: absolute; left: 0; top: 12px; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: var(--ink); font-size: .75rem; font-weight: 900; }

.contact-section { position: relative; overflow: hidden; padding: 106px 0; background: var(--accent); }
.contact-section::after { content: "STARTEP"; position: absolute; right: -20px; bottom: -68px; color: rgba(18,25,35,.055); font-size: clamp(7rem,18vw,16rem); line-height: 1; font-weight: 950; letter-spacing: -.08em; pointer-events: none; }
.contact-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .75fr; gap: 76px; align-items: center; }
.contact-copy .eyebrow { color: #544200; }
.contact-copy > p:not(.eyebrow) { max-width: 640px; color: #4f410c; font-size: 1.03rem; }
.contact-actions { display: grid; gap: 10px; max-width: 590px; margin-top: 30px; }
.contact-subheading { margin: 12px 0 2px; color: #544200; font-size: .82rem; font-weight: 900; letter-spacing: .14em; }
.contact-link { display: flex; align-items: center; gap: 15px; padding: 15px; border: 1px solid rgba(18,25,35,.18); border-radius: 12px; background: rgba(255,255,255,.42); text-decoration: none; transition: background .2s, transform .2s; }
.contact-link:hover { background: rgba(255,255,255,.75); transform: translateX(4px); }
.contact-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 10px; background: var(--ink); color: #fff; font-weight: 900; }
.contact-link small, .contact-link strong { display: block; }
.contact-link small { color: #68550d; font-size: .74rem; }
.contact-link strong { font-size: 1rem; }
.contact-card { padding: 36px; border-radius: 20px; background: var(--ink); color: #fff; box-shadow: 0 24px 60px rgba(18,25,35,.18); }
.contact-card h3 { margin: 0 0 18px; font-size: 1.5rem; }
.contact-card address { color: #ccd4db; font-style: normal; }
.contact-card dl { margin: 24px 0; border-top: 1px solid #364554; border-bottom: 1px solid #364554; }
.contact-card dl div { display: flex; justify-content: space-between; padding: 11px 0; }
.contact-card dt { color: #8f9ba6; }
.contact-card dd { margin: 0; font-weight: 700; }

.site-footer { padding: 66px 0 26px; background: #0e141c; color: #c5cdd4; }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(3,1fr); gap: 54px; }
.footer-brand img { width: 330px; max-width: 100%; height: auto; }
.footer-brand p { max-width: 300px; color: #818d98; font-size: .88rem; }
.site-footer h3 { margin: 0 0 14px; color: #fff; font-size: .86rem; }
.site-footer a, .site-footer span { display: block; margin: 7px 0; color: #8e99a4; text-decoration: none; font-size: .84rem; }
.footer-contact-label { display: block; margin: 7px 0 2px; color: #fff; font-size: .84rem; font-weight: 800; }
.footer-contact-gap { margin-top: 15px; }
.footer-central-email { margin-top: 18px !important; }
.site-footer a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 52px; padding-top: 18px; border-top: 1px solid #27313d; }
.footer-bottom span, .footer-bottom a { margin: 0; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } .btn, .contact-link, .service-card { transition: none; } }

@media (max-width: 1020px) {
  .main-nav { gap: 18px; }
  .main-nav a { font-size: .86rem; }
  .hero-grid { grid-template-columns: 1fr; min-height: auto; padding-top: 56px; }
  .hero-copy { max-width: 790px; }
  .hero-visual { max-width: 800px; }
  .hero-art-card, .hero-art-card > img { min-height: 430px; }
  .trust-grid { grid-template-columns: repeat(2,1fr); padding-block: 18px; }
  .section-head { grid-template-columns: 1fr; gap: 18px; }
  .brand-cloud { grid-template-columns: repeat(3,1fr); }
  .split-layout, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .visual-panel, .visual-panel img { min-height: 520px; }
  .parts-layout { grid-template-columns: 1fr; }
  .parts-visual, .parts-visual img { min-height: 290px; }
  .process-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .header-inner { min-height: 82px; }
  .brand img { width: 230px; }
  .menu-toggle { display: block; }
  .main-nav { position: absolute; left: 14px; right: 14px; top: 88px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 10px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: 0 18px 45px rgba(18,25,35,.14); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 14px; }
  .main-nav .nav-cta { margin-top: 6px; text-align: center; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-grid { gap: 42px; padding-block: 48px 58px; }
  .hero h1 { font-size: clamp(3rem,15vw,5rem); }
  .hero-lead { font-size: 1rem; }
  .hero-points { display: grid; grid-template-columns: 1fr 1fr; }
  .hero-art-card, .hero-art-card > img { min-height: 380px; }
  .badge-two { top: 14px; right: 14px; }
  .badge-one { bottom: 14px; left: 14px; }
  .trust-grid { grid-template-columns: 1fr; gap: 10px; }
  .section { padding: 82px 0; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card-featured { grid-row: auto; min-height: 540px; padding: 34px; }
  .brand-section, .process-section { padding: 82px 0; }
  .brand-cloud { grid-template-columns: repeat(2,1fr); }
  .split-layout { gap: 44px; }
  .visual-panel, .visual-panel img { min-height: 390px; }
  .parts-visual, .parts-visual img { min-height: 250px; }
  .parts-list { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .process-step { min-height: auto; }
  .process-step > span { margin-bottom: 26px; }
  .about-facts { grid-template-columns: 1fr; }
  .contact-grid { gap: 42px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 460px) {
  .hero-actions .btn { width: 100%; }
  .hero-points { grid-template-columns: 1fr; }
  .hero-art-card, .hero-art-card > img { min-height: 325px; }
  .hero-badge { font-size: .72rem; padding: 7px 9px; }
  .hero-badge span { width: 26px; height: 26px; }
  .brand-cloud { grid-template-columns: 1fr; }
  .contact-card, .about-card, .parts-tip { padding: 28px; }
}