:root {
  --red: #C8281E;
  --amber: #F2A60D;
  --green: #1DB584;
  --ink: #14161a;
  --muted: #5b616b;
  --line: #e4e6ea;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --card: #ffffff;
  --btn-bg: #14161a;
  --btn-fg: #ffffff;
  --dark: #111317;
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --red: #E8412F;
    --amber: #FFB82E;
    --green: #3DD6A0;
    --ink: #eef0f3;
    --muted: #a3a9b3;
    --line: #2a2e35;
    --bg: #0f1114;
    --bg-soft: #16191e;
    --card: #1a1d23;
    --btn-bg: #eef0f3;
    --btn-fg: #111317;
    --dark: #0a0b0d;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --red: #E8412F; --amber: #FFB82E; --green: #3DD6A0;
  --ink: #eef0f3; --muted: #a3a9b3; --line: #2a2e35;
  --bg: #0f1114; --bg-soft: #16191e; --card: #1a1d23;
  --btn-bg: #eef0f3; --btn-fg: #111317; --dark: #0a0b0d;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: "Geist", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.08rem; font-weight: 600; }
p { margin: 0 0 1em; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }

.skip { position: absolute; left: -999px; top: 8px; background: var(--btn-bg); color: var(--btn-fg); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  padding: 12px 22px; border-radius: 999px;
  font: inherit; font-weight: 600; font-size: .98rem;
  text-decoration: none; cursor: pointer;
  transition: transform .15s ease, opacity .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-small { padding: 8px 16px; font-size: .9rem; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 1.3rem; letter-spacing: -0.02em; color: var(--ink); }
.logo img { height: 22px; width: auto; }
.footer-logo { color: #fff; font-size: 1.15rem; }
.footer-logo img { height: 18px; }

.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a:not(.btn) { text-decoration: none; color: var(--muted); font-weight: 500; font-size: .95rem; }
.site-nav a:not(.btn):hover { color: var(--ink); }
.menu-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.menu-toggle .bar { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

@media (max-width: 820px) {
  .menu-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
  }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px 4px; border-bottom: 1px solid var(--line); }
  .site-nav .btn { margin-top: 12px; }
}

/* Hero */
.hero { padding: 72px 0 64px; background: radial-gradient(1100px 500px at 85% -10%, color-mix(in srgb, var(--amber) 14%, transparent), transparent 60%), var(--bg); }
.hero-inner { display: grid; grid-template-columns: 1.35fr 1fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 6px; font-size: .9rem; font-weight: 600; color: var(--muted); margin-bottom: 18px; }
.dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.dot.red, .lamp.red { background: var(--red); }
.dot.amber, .lamp.amber { background: var(--amber); }
.dot.green, .lamp.green { background: var(--green); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 40em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.hero-visual { display: flex; justify-content: center; }
.signal {
  background: var(--dark); border-radius: 28px; padding: 22px;
  display: grid; gap: 16px; width: 100%; max-width: 300px;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.45);
}
.lamp {
  height: 78px; border-radius: 18px; display: flex; align-items: center; padding: 0 22px;
  color: #fff; font-weight: 600; font-size: 1.05rem;
  animation: glow 6s infinite; opacity: .5;
}
.lamp.amber { color: #1d1500; animation-delay: 2s; }
.lamp.green { color: #00281a; animation-delay: 4s; }
@keyframes glow { 0%, 30% { opacity: 1; } 36%, 100% { opacity: .5; } }
@media (prefers-reduced-motion: reduce) { .lamp { animation: none; opacity: 1; } html { scroll-behavior: auto; } }

@media (max-width: 820px) {
  .hero { padding: 48px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .signal { max-width: none; grid-template-columns: repeat(3, 1fr); padding: 14px; gap: 10px; border-radius: 20px; }
  .lamp { height: 64px; padding: 0 10px; justify-content: center; font-size: .85rem; text-align: center; border-radius: 12px; }
}

/* Sections */
.section { padding: 88px 0; }
.section-title { text-align: center; }
.section-sub { text-align: center; color: var(--muted); max-width: 640px; margin: 0 auto 44px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  display: flex; flex-direction: column; text-decoration: none;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: border-color .15s ease, transform .15s ease;
}
.card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--ink) 30%, var(--line)); }
.card p { color: var(--muted); flex: 1; }
.card-link { font-weight: 600; font-size: .95rem; }
.card-tag {
  align-self: flex-start; display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  margin-bottom: 14px; color: var(--muted);
}
.card-tag::before { content: ""; width: 12px; height: 12px; border-radius: 4px; background: currentColor; }
.card-tag.red::before { background: var(--red); }
.card-tag.amber::before { background: var(--amber); }
.card-tag.green::before { background: var(--green); }

.product { border-top: 1px solid var(--line); }
.product.alt { background: var(--bg-soft); }
.product-inner { display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; align-items: start; }
.product-head { position: sticky; top: 100px; }
.product-head p { color: var(--muted); }
.head-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 8px; }
.text-link { font-weight: 600; font-size: .95rem; color: var(--muted); }
.text-link:hover { color: var(--ink); }
.soon { font-size: .85rem; font-weight: 600; color: var(--muted); border: 1px solid var(--line); padding: 4px 12px; border-radius: 999px; }

.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.feature p { color: var(--muted); font-size: .96rem; margin: 0; }

@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr; }
  .product-inner { grid-template-columns: 1fr; gap: 32px; }
  .product-head { position: static; }
}
@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .features { grid-template-columns: 1fr; }
}

/* Why */
.why { background: var(--dark); color: #eef0f3; }
.why .section-title { margin-bottom: 44px; }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.why-grid > div { border-top: 3px solid; padding-top: 18px; }
.why-grid > div:nth-child(1) { border-color: #E8412F; }
.why-grid > div:nth-child(2) { border-color: #FFB82E; }
.why-grid > div:nth-child(3) { border-color: #3DD6A0; }
.why-grid > div:nth-child(4) { border-color: #6b7280; }
.why-grid p { color: #a3a9b3; font-size: .96rem; }
@media (max-width: 960px) { .why-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .why-grid { grid-template-columns: 1fr; } }

/* Contact */
.contact-inner { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: start; }
.contact-copy p { color: var(--muted); }
.ticks { list-style: none; padding: 0; margin: 20px 0 0; }
.ticks li { position: relative; padding-left: 28px; margin-bottom: 10px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: .45em; width: 12px; height: 12px; border-radius: 4px; background: var(--green); }

.contact-form { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 28px; display: grid; gap: 16px; }
.contact-form label { display: grid; gap: 6px; font-size: .92rem; font-weight: 600; }
.contact-form .opt { font-weight: 400; color: var(--muted); }
.row.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  font: inherit; font-weight: 400; font-size: 1rem;
  color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 13px; width: 100%;
}
textarea { resize: vertical; min-height: 120px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--amber); outline-offset: 0; border-color: transparent; }
.contact-form .consent { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: var(--muted); }
.consent input { margin-top: 4px; width: 18px; height: 18px; flex: none; accent-color: var(--green); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 0; font-size: .95rem; min-height: 1.4em; }
.form-status.ok { color: var(--green); font-weight: 600; }
.form-status.err { color: var(--red); font-weight: 600; }
.contact-form .invalid { border-color: var(--red); }
.contact-form button { justify-self: start; }

@media (max-width: 860px) {
  .contact-inner { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .row.two { grid-template-columns: 1fr; }
  .contact-form { padding: 20px; }
  .contact-form button { justify-self: stretch; }
}

/* Footer */
.site-footer { background: var(--dark); color: #a3a9b3; padding: 36px 0; border-top: 1px solid #23262c; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer a { text-decoration: none; color: #a3a9b3; font-size: .92rem; }
.site-footer a:hover { color: #fff; }
.copy { margin: 0; font-size: .88rem; }

/* Privacy page */
.prose { max-width: 760px; margin: 0 auto; padding: 64px 16px 88px; }
.prose h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
.prose h2 { font-size: 1.25rem; margin-top: 2em; }
.prose p, .prose li { color: var(--muted); }