:root {
  --paper: #f5f7f5;
  --paper-deep: #eaede9;
  --paper-ink: #ffffff;
  --ink: #16181a;
  --ink-2: #474e52;
  --ink-3: #5a6368;
  --line: #cfd5ce;
  --line-strong: #a8afaa;
  --signal: #2547d0;
  --signal-deep: #1b37a6;
  --signal-soft: #e4e9fb;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
::selection { color: #fff; background: var(--signal); }
a { color: inherit; }
.container { width: min(1180px, 100% - 48px); margin-inline: auto; }
.reading { width: min(760px, 100%); }
.container.reading { width: min(760px, 100% - 48px); }

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
}
.header-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 11px; font-family: var(--font-display); font-weight: 700; font-size: 20px; letter-spacing: -.02em; text-decoration: none; }
.brand-mark { width: 36px; height: 36px; border-radius: 10px; display: block; }
.brand .kvm { color: var(--ink-3); font-weight: 500; }
.nav { display: flex; align-items: center; gap: 10px; }
.nav a { color: var(--ink-2); padding: 9px 12px; border-radius: 999px; font-size: 14px; text-decoration: none; transform: translateY(0); transition: color .15s ease, background-color .15s ease, transform .18s cubic-bezier(.16, 1, .3, 1), box-shadow .18s ease; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current] { color: #fff; background: var(--signal); font-weight: 600; }
.nav .buy { color: #fff; background: var(--ink); padding-inline: 18px; font-weight: 500; }
.nav .buy:hover { color: #fff; background: var(--signal); }

@media (hover: hover) and (pointer: fine) {
  .nav a:hover { background: var(--paper-deep); transform: translateY(-2px); }
  .nav a[aria-current]:hover, .nav .buy:hover { color: #fff; background: var(--signal); box-shadow: 0 5px 14px color-mix(in srgb, var(--signal) 22%, transparent); }
}

@media (prefers-reduced-motion: reduce) {
  .nav a { transform: none !important; transition: color .15s ease, background-color .15s ease; }
}
.nav-toggle { display: none; width: 44px; height: 44px; background: none; border: 1px solid var(--line-strong); border-radius: 6px; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav-toggle span { display: block; width: 16px; height: 1.5px; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.hero { padding-block: clamp(64px, 10vw, 112px) clamp(54px, 8vw, 88px); border-bottom: 1px solid var(--line); }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--ink-3); font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow .dot { width: 7px; height: 7px; background: var(--signal); border-radius: 50%; }
h1, h2, h3 { font-family: var(--font-display); }
h1 { max-width: 13ch; margin-top: 20px; font-size: clamp(42px, 7vw, 76px); line-height: .98; letter-spacing: -.04em; text-wrap: balance; }
.lead { max-width: 66ch; margin-top: 24px; color: var(--ink-2); font-size: clamp(17px, 2vw, 20px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; border: 1px solid var(--line-strong); border-radius: 7px; font-weight: 600; text-decoration: none; }
.button.primary { color: #fff; background: var(--ink); border-color: var(--ink); }
.button.primary:hover { background: var(--signal); border-color: var(--signal); }
.button.secondary:hover { background: var(--paper-deep); }
.facts { margin-top: 42px; display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line-strong); }
.fact { padding: 18px 18px 18px 0; }
.fact + .fact { padding-left: 18px; border-left: 1px solid var(--line); }
.fact .k { color: var(--ink-3); font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; }
.fact .v { margin-top: 5px; font-weight: 650; }

.section { padding-block: clamp(58px, 8vw, 88px); }
.section.alt { background: var(--paper-deep); border-block: 1px solid var(--line); }
h2 { max-width: 18ch; font-size: clamp(31px, 4.8vw, 48px); line-height: 1.06; letter-spacing: -.035em; text-wrap: balance; }
h3 { margin-top: 32px; font-size: 22px; letter-spacing: -.02em; }
.section p, .section li { color: var(--ink-2); font-size: 16.5px; }
.section p { max-width: 70ch; margin-top: 16px; }
.section strong { color: var(--ink); }
.section ul, .section ol { margin: 20px 0 0 22px; }
.section li + li { margin-top: 9px; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .72fr); gap: clamp(40px, 8vw, 96px); align-items: start; }
.proof { position: sticky; top: 96px; padding: 26px; background: var(--paper-ink); border: 1px solid var(--line-strong); border-radius: 10px; }
.proof .label { color: var(--ink-3); font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; }
.proof .statement { margin-top: 14px; color: var(--ink); font-family: var(--font-display); font-size: 25px; font-weight: 650; line-height: 1.15; letter-spacing: -.025em; }
.proof ul { margin-top: 20px; }
.proof li { font-size: 14.5px; }
.steps { margin-top: 34px; border-top: 1px solid var(--line-strong); }
.step { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding-block: 24px; border-bottom: 1px solid var(--line); }
.step .n { color: var(--signal); font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; }
.step h3 { margin-top: 0; }
.step p { margin-top: 8px; }
.comparison { width: 100%; margin-top: 30px; border-collapse: collapse; background: var(--paper-ink); }
.comparison th, .comparison td { padding: 16px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.comparison th { font-size: 13px; }
.comparison td { color: var(--ink-2); font-size: 14px; }
.product-shot { margin-top: 34px; }
.product-shot img { width: 100%; height: auto; display: block; border: 1px solid var(--line-strong); border-radius: 10px; }
.product-shot figcaption { margin-top: 10px; color: var(--ink-3); font-family: var(--font-mono); font-size: 11px; }
.related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 32px; background: var(--line); border: 1px solid var(--line); }
.related a { min-height: 170px; padding: 24px; background: var(--paper-ink); text-decoration: none; }
.related a:hover { background: var(--signal-soft); }
.related .k { color: var(--ink-3); font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.related .t { margin-top: 18px; font-family: var(--font-display); font-size: 20px; font-weight: 650; line-height: 1.15; }
.related .more { margin-top: 24px; color: var(--signal-deep); font-size: 13px; font-weight: 650; }
.faq { margin-top: 30px; border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { padding: 19px 4px; cursor: pointer; font-weight: 650; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--signal); font-family: var(--font-mono); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .answer { max-width: 68ch; padding: 0 4px 22px; color: var(--ink-2); }
.close { text-align: center; }
.close h2, .close p { margin-inline: auto; }
.close .hero-actions { justify-content: center; }

.footer { padding-block: 38px 30px; border-top: 1px solid var(--line); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.footer .brand-mark { width: 30px; height: 30px; border-radius: 8px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a { color: var(--ink-2); font-size: 13px; text-decoration: none; }
.footer-links a:hover { color: var(--ink); }
.legal { width: 100%; color: var(--ink-3); font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

@media (max-width: 820px) {
  .nav-toggle { display: flex; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 24px 18px; background: var(--paper); border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav a { min-height: 44px; padding: 13px 0; border-top: 1px solid var(--line); border-radius: 0; font-size: 15px; }
  .nav a:first-child { border-top: 0; }
  .nav a[aria-current] { border-radius: 999px; }
  .nav .buy { margin-top: 14px; padding-inline: 14px; border-top: 0; border-radius: 999px; text-align: center; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .fact:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .fact:nth-child(4) { border-top: 1px solid var(--line); }
  .split { grid-template-columns: 1fr; }
  .proof { position: static; }
  .related { grid-template-columns: 1fr; }
  .related a { min-height: 0; }
}

@media (max-width: 520px) {
  .hero { padding-top: 54px; }
  h1 { font-size: clamp(39px, 12vw, 56px); }
  .facts { grid-template-columns: 1fr; }
  .fact, .fact + .fact { padding: 14px 0; border-left: 0; border-top: 1px solid var(--line); }
  .fact:first-child { border-top: 0; }
  .step { grid-template-columns: 40px 1fr; gap: 10px; }
  .comparison { display: block; overflow-x: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}