/* ==========================================================================
   Captiosys Micro Technologies — site stylesheet
   Company palette is drawn from the logo (ring red + ring blue) on deep ink.
   Product accents: CuroNexus blue (#1D5FE0), Vytel EDTA violet (#4B3B8F).
   ========================================================================== */

:root {
  --ink: #0E1726;
  --ink-2: #1B2638;
  --ink-soft: #4A5568;
  --ink-faint: #6E7A8A;
  --paper: #F6F5F1;
  --paper-2: #EEEDE7;
  --surface: #FFFFFF;
  --rule: #DEDCD4;
  --rule-strong: #C7C4BA;

  /* Logo colours */
  --cap-red: #E2435C;
  --cap-blue: #1F4E8C;

  /* Products */
  --cn: #1D5FE0;
  --cn-50: #EAF1FE;
  --cn-700: #1849B8;
  --vy: #4B3B8F;
  --vy-50: #F1EEF9;
  --vy-700: #3E3077;

  /* Vacutainer cap colours (Vytel status) */
  --tube-lavender: #8C78D0;
  --tube-gold: #D9A21B;
  --tube-red: #C8352B;
  --tube-blue: #5AA9D6;
  --tube-green: #3E9A63;
  --tube-grey: #9AA3A8;

  --f-display: "Fraunces", Georgia, serif;
  --f-body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;
  --f-logo: "Poppins", var(--f-body);

  --r-sm: 8px;
  --r: 14px;
  --r-lg: 22px;
  --wrap: 1180px;
  --shadow: 0 1px 2px rgba(14, 23, 38, .05), 0 8px 28px rgba(14, 23, 38, .07);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 500; line-height: 1.12; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.5rem, 5.4vw, 4.4rem); font-variation-settings: "opsz" 144; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.8rem); font-variation-settings: "opsz" 96; }
h3 { font-size: 1.35rem; font-family: var(--f-body); font-weight: 600; letter-spacing: -.005em; }
h4 { font-size: 1.05rem; font-family: var(--f-body); font-weight: 600; }
em { font-style: italic; }
.wrap { width: min(var(--wrap), 100% - 40px); margin-inline: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 100; border-radius: 6px; }
:focus-visible { outline: 2px solid var(--cn); outline-offset: 3px; border-radius: 4px; }

.eyebrow {
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: inline-flex; align-items: center; gap: .6em;
  margin-bottom: 1.1rem;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 40em; }
.muted { color: var(--ink-faint); }
.mono { font-family: var(--f-mono); font-size: .85em; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246, 245, 241, .86);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.site-header.scrolled { border-bottom-color: var(--rule); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--f-logo); font-weight: 500; font-size: 1.42rem; letter-spacing: -.01em; color: var(--ink); }
.logo-mark { width: 38px; height: auto; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; font-size: .95rem; font-weight: 500; color: var(--ink-soft); padding: 8px 12px; border-radius: 999px; transition: background .15s, color .15s; }
.nav-links a:hover { color: var(--ink); background: var(--paper-2); }
.nav-links a[aria-current="page"] { color: var(--ink); background: var(--surface); box-shadow: inset 0 0 0 1px var(--rule); }
.nav-links .prod-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--rule-strong); border-radius: 10px; width: 42px; height: 42px; cursor: pointer; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 4px auto; transition: transform .2s, opacity .2s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55em;
  font: 600 .98rem/1 var(--f-body);
  padding: 14px 22px; border-radius: 999px;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s, background .15s, box-shadow .15s, color .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ink:hover { background: var(--ink-2); box-shadow: 0 8px 20px rgba(14, 23, 38, .18); }
.btn-line { border-color: var(--rule-strong); color: var(--ink); background: transparent; }
.btn-line:hover { background: var(--surface); }
.btn-cn { background: var(--cn); color: #fff; }
.btn-cn:hover { background: var(--cn-700); }
.btn-vy { background: var(--vy); color: #fff; }
.btn-vy:hover { background: var(--vy-700); }
.btn-light { background: #fff; color: var(--ink); }
.btn .arr { transition: transform .15s; }
.btn:hover .arr { transform: translateX(3px); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Sections ---------- */
section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-head { max-width: 720px; margin-bottom: 52px; }
.band-ink { background: var(--ink); color: #E8ECF2; }
.band-ink h2, .band-ink h3, .band-ink h4 { color: #fff; }
.band-ink .eyebrow, .band-ink .muted { color: #93A0B4; }
.band-ink .lede { color: #B9C3D2; }
.band-surface { background: var(--surface); border-block: 1px solid var(--rule); }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 88px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.hero h1 em { color: var(--cap-red); font-style: italic; }
.hero .lede { margin: 1.4rem 0 2rem; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 2.2rem; font-size: .9rem; color: var(--ink-faint); }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--tube-green); }

/* Care loop diagram */
.loop { position: relative; aspect-ratio: 680 / 520; width: 100%; max-width: 620px; margin-inline: auto; }
.loop svg { width: 100%; height: 100%; overflow: visible; }
.loop .node-label { font: 600 13px var(--f-body); fill: var(--ink); }
.loop .node-sub { font: 500 10.5px var(--f-mono); letter-spacing: .08em; text-transform: uppercase; }
.loop .center-title { font: 500 26px var(--f-display); fill: var(--ink); }
.loop .center-sub { font: 500 11px var(--f-mono); letter-spacing: .12em; text-transform: uppercase; fill: var(--ink-faint); }
.loop .runner { offset-rotate: 0deg; }
@media (prefers-reduced-motion: no-preference) {
  .loop .spin-slow { transform-origin: 340px 260px; animation: spin 60s linear infinite; }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Cards / grids ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--r-lg);
  padding: 30px; position: relative;
}
.card p:last-child { margin-bottom: 0; }
.card .num { font-family: var(--f-mono); font-size: .78rem; color: var(--ink-faint); letter-spacing: .1em; display: block; margin-bottom: 18px; }
.band-ink .card { background: var(--ink-2); border-color: #2A3850; }
.band-ink .card p { color: #B9C3D2; }

/* Product cards (home) */
.product-card {
  border-radius: 28px; padding: 40px; position: relative; overflow: hidden;
  display: flex; flex-direction: column; min-height: 520px;
  border: 1px solid var(--rule); background: var(--surface);
  transition: transform .25s, box-shadow .25s;
}
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.product-card .tag { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; padding: 6px 10px; border-radius: 999px; align-self: flex-start; margin-bottom: 26px; }
.product-card h3 { font-family: var(--f-display); font-weight: 500; font-size: 2.6rem; margin-bottom: .2em; }
.product-card .strap { font-size: 1.12rem; color: var(--ink-soft); margin-bottom: 1.6rem; }
.product-card ul { list-style: none; margin: 0 0 2rem; padding: 0; }
.product-card li { padding: 11px 0; border-top: 1px solid var(--rule); font-size: .97rem; display: flex; gap: 12px; }
.product-card li::before { content: "→"; font-family: var(--f-mono); }
.product-card .btn { margin-top: auto; align-self: flex-start; }
.product-card.cn .tag { background: var(--cn-50); color: var(--cn-700); }
.product-card.cn li::before { color: var(--cn); }
.product-card.vy .tag { background: var(--vy-50); color: var(--vy-700); }
.product-card.vy li::before { color: var(--vy); }
.product-card .wordmark-cn { color: var(--cn); }
.product-card .wordmark-vy { color: var(--vy); }

/* Status badges */
.status { display: inline-flex; align-items: center; gap: 8px; font: 500 .8rem var(--f-mono); letter-spacing: .04em; padding: 6px 12px; border-radius: 999px; background: var(--paper-2); color: var(--ink-soft); }
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--tube-gold); }
.status.live::before { background: var(--tube-green); box-shadow: 0 0 0 3px rgba(62, 154, 99, .18); }
.status.build::before { background: var(--cn); }

/* Journey steps */
.journey { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--rule); border-radius: var(--r-lg); overflow: hidden; background: var(--surface); }
.journey .step { padding: 30px 26px 32px; border-right: 1px solid var(--rule); position: relative; }
.journey .step:last-child { border-right: none; }
.journey .step .who { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; padding: 4px 9px; border-radius: 999px; display: inline-block; margin-bottom: 18px; }
.journey .step .who.cn { background: var(--cn-50); color: var(--cn-700); }
.journey .step .who.vy { background: var(--vy-50); color: var(--vy-700); }
.journey .step .who.both { background: var(--paper-2); color: var(--ink-soft); }
.journey .step h4 { font-family: var(--f-display); font-weight: 500; font-size: 1.5rem; margin-bottom: .4em; }
.journey .step p { color: var(--ink-soft); font-size: .95rem; margin: 0; }
.journey .step .idx { position: absolute; top: 26px; right: 24px; font: 500 .8rem var(--f-mono); color: var(--rule-strong); }

/* Feature list */
.feature { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 22px 0; border-top: 1px solid var(--rule); }
.feature:first-child { border-top: none; padding-top: 0; }
.feature .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--paper-2); }
.feature .ico svg { width: 22px; height: 22px; }
.feature h4 { margin: 2px 0 4px; }
.feature p { margin: 0; color: var(--ink-soft); font-size: .96rem; }
.band-ink .feature { border-color: #2A3850; }
.band-ink .feature .ico { background: #22304A; }
.band-ink .feature p { color: #B9C3D2; }

/* Split layout */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.split.center { align-items: center; }
.sticky-col { position: sticky; top: 110px; }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font: 500 .74rem var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); background: var(--paper); }
tr:last-child td { border-bottom: none; }
td code, .chip-code { font-family: var(--f-mono); font-size: .85em; background: var(--paper-2); padding: 2px 6px; border-radius: 5px; }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { font-size: .88rem; font-weight: 500; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--rule-strong); background: var(--surface); }
.band-ink .chip { background: transparent; border-color: #34445F; color: #D5DCE6; }

/* Roadmap */
.roadmap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
.roadmap .phase { padding: 30px; border-radius: var(--r-lg); border: 1px solid var(--rule); background: var(--surface); }
.roadmap .phase .when { font: 500 .78rem var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); }
.roadmap .phase h3 { font-family: var(--f-display); font-weight: 500; font-size: 1.7rem; margin: 10px 0 14px; }
.roadmap .phase ul { margin: 0; padding: 0; list-style: none; }
.roadmap .phase li { padding: 9px 0 9px 22px; border-top: 1px solid var(--rule); font-size: .95rem; position: relative; }
.roadmap .phase li::before { content: ""; position: absolute; left: 2px; top: 17px; width: 8px; height: 8px; border-radius: 50%; }
.roadmap .phase li.cn::before { background: var(--cn); }
.roadmap .phase li.vy::before { background: var(--vy); }
.roadmap .phase li.co::before { background: var(--cap-red); }
.roadmap .phase.now { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.legend { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; font-size: .88rem; color: var(--ink-faint); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }

/* Vytel tube tracker */
.tubes { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.tube-step { text-align: center; padding: 24px 10px 20px; border-radius: var(--r); background: var(--surface); border: 1px solid var(--rule); }
.tube-step svg { width: 26px; height: 64px; margin: 0 auto 14px; }
.tube-step b { display: block; font-size: .95rem; margin-bottom: 4px; }
.tube-step span { font-size: .82rem; color: var(--ink-faint); line-height: 1.4; display: block; }
.band-ink .tube-step { background: var(--ink-2); border-color: #2A3850; }
.band-ink .tube-step span { color: #93A0B4; }

/* Phone mock (Vytel) */
.phone {
  width: 290px; margin-inline: auto; border-radius: 42px; padding: 12px; background: #11151C;
  box-shadow: 0 30px 60px rgba(14, 23, 38, .28), inset 0 0 0 2px #2B313B;
}
.phone .screen { border-radius: 32px; background: #F3F5F4; overflow: hidden; min-height: 560px; display: flex; flex-direction: column; }
.phone .notch { width: 96px; height: 24px; background: #11151C; border-radius: 0 0 16px 16px; margin: 0 auto; }
.phone .app-top { padding: 14px 20px 12px; }
.phone .app-top small { font: 500 10px var(--f-mono); letter-spacing: .1em; color: #6B7680; text-transform: uppercase; }
.phone .app-top h5 { font: 700 19px var(--f-body); margin: 4px 0 0; color: #17212B; }
.phone .map { height: 180px; margin: 0 14px; border-radius: 18px; background: #E3E8E5; position: relative; overflow: hidden; }
.phone .sheet { background: #fff; margin: 12px 14px; border-radius: 18px; padding: 16px; border: 1px solid #D9DEDB; }
.phone .sheet .row { display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.phone .sheet .eta { font: 800 24px var(--f-body); color: #17212B; }
.phone .sheet .pill { font-size: 11px; font-weight: 600; padding: 4px 9px; border-radius: 999px; background: var(--vy-50); color: var(--vy); }
.phone .progress { display: flex; gap: 4px; margin-top: 14px; }
.phone .progress i { flex: 1; height: 5px; border-radius: 3px; background: #E2E6E4; }
.phone .progress i.on { background: var(--vy); }
.phone .collector { display: flex; gap: 12px; align-items: center; margin-top: 14px; padding-top: 14px; border-top: 1px solid #ECEFED; font-size: 13px; }
.phone .avatar { width: 38px; height: 38px; border-radius: 50%; background: var(--vy-50); color: var(--vy); display: grid; place-items: center; font-weight: 700; font-size: 14px; }
.phone .callbtn { margin-left: auto; width: 34px; height: 34px; border-radius: 50%; background: var(--vy); display: grid; place-items: center; }

/* Mini product header (product pages) */
.prod-hero { padding: 80px 0 72px; position: relative; overflow: hidden; }
.prod-hero.cn { background: linear-gradient(180deg, var(--cn-50), var(--paper) 85%); }
.prod-hero.vy { background: linear-gradient(180deg, var(--vy-50), var(--paper) 85%); }
.prod-name { font-family: var(--f-display); font-size: clamp(3rem, 7vw, 5.6rem); line-height: 1; margin-bottom: 18px; font-weight: 500; letter-spacing: -.02em; }
.prod-hero.cn .prod-name { color: var(--cn); }
.prod-hero.vy .prod-name { color: var(--vy); }
.by-line { font: 500 .8rem var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); display: inline-flex; align-items: center; gap: 8px; margin-bottom: 24px; }
.by-line img { width: 20px; }

/* Stat row (facts only, no invented numbers) */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--rule); margin-top: 56px; }
.facts div { padding: 22px 22px 0 0; }
.facts b { display: block; font-family: var(--f-display); font-weight: 500; font-size: 2rem; line-height: 1.1; }
.facts span { font-size: .9rem; color: var(--ink-faint); }

/* Architecture strip */
.layers { display: grid; gap: 8px; }
.layer { display: grid; grid-template-columns: 52px 220px 1fr; gap: 18px; align-items: center; padding: 16px 22px; border-radius: 12px; background: var(--surface); border: 1px solid var(--rule); font-size: .95rem; }
.layer .n { font: 500 .8rem var(--f-mono); color: var(--ink-faint); }
.layer b { font-weight: 600; }
.layer span { color: var(--ink-soft); }

/* State machine */
.states { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.state { font: 500 .85rem var(--f-mono); padding: 9px 14px; border-radius: 10px; background: var(--surface); border: 1px solid var(--rule-strong); }
.state.term { background: var(--ink); color: #fff; border-color: var(--ink); }
.states .arrow { color: var(--ink-faint); font-family: var(--f-mono); }

/* CTA band */
.cta {
  border-radius: 32px; padding: 64px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center;
  background: var(--ink); color: #fff; position: relative; overflow: hidden;
}
.cta h2 { color: #fff; margin-bottom: .3em; }
.cta p { color: #B9C3D2; margin: 0; }
.cta .btn-row { justify-content: flex-end; }
.cta .ring-deco { position: absolute; right: -120px; top: -120px; width: 380px; opacity: .08; pointer-events: none; }

/* Contact */
.form { display: grid; gap: 18px; }
.form .row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { font-size: .88rem; font-weight: 600; display: block; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; font: inherit; font-size: 1rem; padding: 13px 15px; border-radius: 12px;
  border: 1px solid var(--rule-strong); background: var(--surface); color: var(--ink);
}
textarea { min-height: 140px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(14, 23, 38, .08); }
.form-note { font-size: .86rem; color: var(--ink-faint); }
.form-result { display: none; padding: 16px 18px; border-radius: 12px; background: var(--paper-2); font-size: .95rem; }
.form-result.show { display: block; }
.info-list { display: grid; gap: 0; }
.info-list div { padding: 18px 0; border-top: 1px solid var(--rule); }
.info-list div:first-child { border-top: none; padding-top: 0; }
.info-list b { display: block; font: 500 .74rem var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 4px; }

/* Footer */
.site-footer { background: var(--ink); color: #B9C3D2; padding: 72px 0 32px; font-size: .94rem; }
.site-footer .logo { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.footer-grid h5 { font: 500 .74rem var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: #7D8BA1; margin: 6px 0 16px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-grid a { text-decoration: none; color: #D5DCE6; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { margin-top: 16px; max-width: 30em; }
.brand-note { margin-top: 18px; font-size: .86rem; color: #93A0B4; border-left: 2px solid var(--vy); padding-left: 12px; }
.footer-bottom { margin-top: 56px; padding-top: 24px; border-top: 1px solid #22304A; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: .84rem; color: #7D8BA1; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap: 48px; }
  .sticky-col { position: static; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .journey { grid-template-columns: repeat(2, 1fr); }
  .journey .step:nth-child(2) { border-right: none; }
  .journey .step:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .tubes { grid-template-columns: repeat(3, 1fr); }
  .roadmap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta { grid-template-columns: 1fr; padding: 48px 36px; }
  .cta .btn-row { justify-content: flex-start; }
  .layer { grid-template-columns: 40px 1fr; }
  .layer span { grid-column: 2; }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--paper); border-bottom: 1px solid var(--rule); padding: 12px 20px 20px; gap: 2px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; border-radius: 10px; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .facts { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  section { padding: 72px 0; }
  .grid-4, .journey { grid-template-columns: 1fr; }
  .journey .step { border-right: none; border-bottom: 1px solid var(--rule); }
  .journey .step:last-child { border-bottom: none; }
  .tubes { grid-template-columns: repeat(2, 1fr); }
  .product-card { padding: 30px; min-height: 0; }
  .form .row-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .card { padding: 24px; }
}