:root {
  color-scheme: dark;
  --ink: #f4f8fb;
  --muted: #9aabba;
  --blue: #00a9ff;
  --blue-bright: #62d4ff;
  --deep: #05080d;
  --panel: #0b1119;
  --line: rgba(126, 201, 235, .17);
  --silver: #c9d4dc;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--deep); }
body { margin: 0; color: var(--ink); background: radial-gradient(circle at 50% -15%, rgba(0, 169, 255, .22), transparent 38rem), repeating-linear-gradient(135deg, rgba(255,255,255,.016) 0 1px, transparent 1px 18px), var(--deep); min-height: 100vh; }
a { color: inherit; }
header, main, footer { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
header { min-height: 94px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { text-decoration: none; letter-spacing: .2em; display: inline-flex; flex-direction: column; gap: 3px; line-height: 1; }
.brand span { color: var(--blue-bright); font-weight: 720; font-size: .98rem; }
.brand small { color: var(--silver); letter-spacing: .55em; font-size: .54rem; }
.menu-button { display: none; color: var(--ink); background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 10px 16px; font: inherit; }
.nav-wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
nav { display: flex; gap: 28px; border-bottom: 1px solid var(--line); overflow-x: auto; }
nav a { position: relative; padding: 17px 0 15px; white-space: nowrap; text-decoration: none; color: var(--muted); font-size: .78rem; letter-spacing: .08em; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }
nav a[aria-current="page"]::after { content: ""; position: absolute; height: 2px; background: var(--blue); left: 0; right: 0; bottom: -1px; }
.home-hero { padding: 96px 0 64px; max-width: 820px; }
.home-hero h1, .product-hero h1 { margin: 0; font-size: clamp(3rem, 8vw, 7.1rem); line-height: .92; letter-spacing: -.055em; font-weight: 760; }
.home-hero .lead { max-width: 650px; font-size: clamp(1.1rem, 2vw, 1.45rem); color: var(--muted); line-height: 1.55; }
.eyebrow, .section-label { color: var(--blue-bright); font-weight: 700; font-size: .72rem; letter-spacing: .17em; text-transform: uppercase; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding-bottom: 72px; }
.product-card { min-height: 260px; padding: 28px; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(17,27,39,.92), rgba(5,9,14,.78)); text-decoration: none; display: flex; flex-direction: column; transition: transform .2s ease, border-color .2s ease; }
.product-card:hover { transform: translateY(-3px); border-color: rgba(98, 212, 255, .5); }
.product-card h2 { margin: auto 0 8px; font-size: clamp(1.55rem, 2.8vw, 2.45rem); letter-spacing: -.035em; }
.product-card p { margin: 0 0 26px; color: var(--muted); font-size: .86rem; letter-spacing: .08em; }
.card-kicker { color: var(--silver); font-size: .68rem; line-height: 1.45; letter-spacing: .12em; }
.card-link { color: var(--blue-bright); font-size: .88rem; }
.product-hero { min-height: 560px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.product-hero::after { content: ""; position: absolute; width: 34rem; height: 34rem; right: -10rem; top: 50%; transform: translateY(-50%); border-radius: 50%; background: radial-gradient(circle, rgba(0,169,255,.2), rgba(0,169,255,.045) 44%, transparent 70%); pointer-events: none; }
.product-hero h1 { max-width: 980px; color: transparent; background: linear-gradient(180deg, #fff, #aebcc7 70%, #6b7a86); -webkit-background-clip: text; background-clip: text; }
.slogan { color: var(--blue-bright); font-size: clamp(.8rem, 2vw, 1.1rem); letter-spacing: .2em; }
.origin { margin-top: 44px; display: flex; align-items: center; gap: 12px; color: var(--silver); font-size: .8rem; letter-spacing: .12em; }
.intro-grid, .support-section { display: grid; grid-template-columns: 1.3fr .7fr; gap: 90px; padding: 80px 0; border-bottom: 1px solid var(--line); }
.profile { margin: 12px 0 0; max-width: 740px; font-size: clamp(1.25rem, 2.2vw, 1.8rem); line-height: 1.46; letter-spacing: -.02em; }
.quick-specs { border-left: 1px solid var(--line); display: grid; align-content: center; }
.quick-specs div { padding: 18px 0 18px 28px; display: flex; flex-direction: column; gap: 7px; border-bottom: 1px solid var(--line); }
.quick-specs span, .timing-grid span { color: var(--muted); font-size: .68rem; letter-spacing: .13em; }
.quick-specs strong { font-size: 1.15rem; }
.guide-section, .timing-section { padding: 88px 0; border-bottom: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: .32fr .68fr; gap: 40px; align-items: start; margin-bottom: 45px; }
.section-heading p { margin: 9px 0 0; }
.section-heading h2, .support-section h2 { font-size: clamp(2rem, 4vw, 4rem); line-height: 1.03; letter-spacing: -.045em; margin: 0; }
.steps { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.steps li { display: grid; grid-template-columns: .32fr .68fr; gap: 40px; padding: 29px 0; border-bottom: 1px solid var(--line); }
.step-number { color: var(--blue); font-size: .82rem; letter-spacing: .12em; }
.steps h3 { margin: 0 0 8px; font-size: 1.08rem; }
.steps p, .support-section p { margin: 0; color: var(--muted); line-height: 1.65; max-width: 720px; }
.timing-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.timing-grid div { min-height: 140px; padding: 25px; display: flex; flex-direction: column; justify-content: space-between; border-right: 1px solid var(--line); background: rgba(11,17,25,.55); }
.timing-grid div:last-child { border-right: 0; }
.timing-grid strong { font-size: clamp(1.25rem, 2.4vw, 2rem); }
.note { color: var(--muted); max-width: 850px; line-height: 1.6; margin: 22px 0 0; font-size: .92rem; }
.care-list { list-style: none; padding: 0; margin: 0 0 0 32%; }
.care-list li { padding: 21px 0 21px 34px; border-bottom: 1px solid var(--line); position: relative; line-height: 1.55; }
.care-list li::before { content: ""; position: absolute; left: 0; top: 29px; width: 9px; height: 2px; background: var(--blue); }
.support-box { align-self: start; border: 1px solid var(--line); padding: 25px; display: flex; flex-direction: column; gap: 14px; color: var(--muted); }
.support-box strong { color: var(--ink); margin-bottom: 4px; }
.safety-callout { width: min(1120px, calc(100% - 40px)); margin: 0 auto 72px; padding: 22px 0; border-top: 1px solid rgba(255,184,77,.35); border-bottom: 1px solid rgba(255,184,77,.18); display: grid; grid-template-columns: .3fr .7fr; gap: 32px; }
.safety-callout strong { color: #ffd18b; }
.safety-callout span { color: var(--muted); line-height: 1.55; }
footer { padding: 35px 0 55px; border-top: 1px solid var(--line); color: var(--muted); display: flex; justify-content: space-between; gap: 32px; font-size: .82rem; line-height: 1.7; }
footer div:last-child { text-align: right; }
.revision { color: #718392; }
@media (max-width: 820px) {
  header { min-height: 78px; }
  .menu-button { display: block; }
  .nav-wrap { display: none; }
  .nav-wrap.open { display: block; }
  nav { flex-direction: column; gap: 0; padding: 7px 0; }
  nav a { padding: 13px 0; }
  nav a[aria-current="page"]::after { display: none; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 220px; }
  .product-hero { min-height: 500px; }
  .product-hero::after { right: -20rem; }
  .intro-grid, .support-section { grid-template-columns: 1fr; gap: 44px; padding: 60px 0; }
  .quick-specs { border-left: 0; border-top: 1px solid var(--line); }
  .quick-specs div { padding-left: 0; }
  .section-heading, .steps li { grid-template-columns: 1fr; gap: 12px; }
  .care-list { margin-left: 0; }
  .timing-grid { grid-template-columns: 1fr; }
  .timing-grid div { min-height: 105px; border-right: 0; border-bottom: 1px solid var(--line); }
  .timing-grid div:last-child { border-bottom: 0; }
  .safety-callout { grid-template-columns: 1fr; gap: 10px; }
}
@media (max-width: 560px) {
  header, main, footer, .nav-wrap, .safety-callout { width: min(100% - 28px, 1120px); }
  .home-hero { padding-top: 72px; }
  .product-hero { min-height: 430px; }
  .origin { gap: 8px; flex-wrap: wrap; line-height: 1.6; }
  footer { flex-direction: column; }
  footer div:last-child { text-align: left; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .product-card { transition: none; } }