/* ============================================================
   werux — KI Solutions for Professionals
   Design system: warm near-black, lime→yellow brand accent
   Type: Sora (display) · Manrope (body) · Space Mono (labels)
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --bg:        #0c0d0a;
  --bg-2:      #121410;
  --bg-3:      #181b15;
  --line:      rgba(244, 245, 242, 0.09);
  --line-2:    rgba(244, 245, 242, 0.16);
  --text:      #f4f5f2;
  --text-dim:  #9aa090;
  --text-mut:  #6c7163;

  --green:        #99cc33;
  --green-bright: #b6e23f;
  --yellow:       #f2e400;
  --grad:         linear-gradient(102deg, #99cc33 0%, #d4dd1e 55%, #f2e400 100%);
  --grad-soft:    linear-gradient(102deg, rgba(153,204,51,0.16), rgba(242,228,0,0.10));

  --ff-display: "Sora", system-ui, sans-serif;
  --ff-body:    "Manrope", system-ui, sans-serif;
  --ff-mono:    "Space Mono", ui-monospace, monospace;

  --maxw: 1280px;
  --pad: clamp(20px, 5vw, 64px);
  --r:   18px;
  --r-lg: 26px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--ff-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
::selection { background: var(--green); color: #0c0d0a; }

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }
.eyebrow {
  font-family: var(--ff-mono);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green-bright);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 24px; height: 1px;
  background: var(--green);
  display: inline-block;
}
.section { padding-block: clamp(72px, 11vw, 150px); position: relative; }
.section-head { max-width: 760px; }
.section-head h2 {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-top: 20px;
  text-wrap: balance;
}
.section-head p {
  color: var(--text-dim);
  font-size: clamp(16px, 1.6vw, 19px);
  margin-top: 22px;
  max-width: 620px;
  text-wrap: pretty;
}

.grad-text {
  display: inline-block;          /* keeps gradient-clipped text visible when it wraps (mobile Safari) */
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 24px;
  border-radius: 100px;
  font-family: var(--ff-body);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .3s, border-color .3s, color .3s;
  will-change: transform;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; transition: transform .35s var(--ease); }
.btn-primary {
  background: var(--grad);
  color: #0c0d0a;
  box-shadow: 0 0 0 0 rgba(153,204,51,0.0);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 38px -10px rgba(153,204,51,0.55);
}
.btn-primary:hover svg { transform: translateX(4px); }
.btn-ghost {
  border: 1px solid var(--line-2);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--green);
  background: var(--grad-soft);
  transform: translateY(-2px);
}
.btn-sm { padding: 10px 18px; font-size: 14px; }

/* ---------- Header / Nav ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .4s var(--ease), border-color .4s, backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(12, 13, 10, 0.78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}
.nav-logo { display: flex; align-items: center; }
.nav-logo img { height: 26px; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  display: block;
  padding: 9px 16px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-dim);
  border-radius: 100px;
  transition: color .25s, background .25s;
}
.nav-links a:hover { color: var(--text); background: rgba(244,245,242,0.05); }
.nav-actions { display: flex; align-items: center; gap: 14px; }

.lang-toggle {
  display: inline-flex;
  font-family: var(--ff-mono);
  font-size: 12px;
  border: 1px solid var(--line-2);
  border-radius: 100px;
  overflow: hidden;
}
.lang-toggle button {
  padding: 7px 12px;
  color: var(--text-mut);
  letter-spacing: 0.05em;
  transition: color .25s, background .25s;
}
.lang-toggle button.active { color: #0c0d0a; background: var(--green-bright); }

.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line-2); border-radius: 12px; align-items: center; justify-content: center; }
.nav-toggle span { position: relative; width: 18px; height: 1.6px; background: var(--text); transition: transform .3s, opacity .3s; }
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; width: 18px; height: 1.6px; background: var(--text); transition: transform .3s; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: 76px;
  overflow: hidden;
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
}
.hero-copy { max-width: 660px; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; z-index: 0; }
.hero-bg canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity .7s var(--ease); }
.hero-bg canvas.active { opacity: 1; }
.hero-scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(8,9,10,0.9) 0%, rgba(8,9,10,0.72) 28%, rgba(8,9,10,0.22) 58%, rgba(8,9,10,0.34) 100%),
    linear-gradient(180deg, rgba(8,9,10,0.5) 0%, rgba(8,9,10,0) 22%, rgba(8,9,10,0) 55%, var(--bg) 100%);
}
.hero h1 {
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: clamp(42px, 6.6vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin-top: 26px;
  text-wrap: balance;
}
.hero h1 .line { display: block; overflow: hidden; }
.hero-sub {
  margin-top: 28px;
  font-size: clamp(17px, 1.8vw, 20px);
  color: var(--text-dim);
  max-width: 500px;
  text-wrap: pretty;
}
.hero-cta { margin-top: 38px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  margin-top: 56px;
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.hero-stat .num { font-family: var(--ff-display); font-weight: 600; font-size: 30px; letter-spacing: -0.02em; }
.hero-stat .lbl { font-family: var(--ff-mono); font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-mut); margin-top: 4px; }

/* hero visual (legacy, unused) */


.scroll-hint {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-mut);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.scroll-hint .bar { width: 1px; height: 34px; background: linear-gradient(var(--green), transparent); animation: drop 2s var(--ease) infinite; }
@keyframes drop { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- Marquee / trust ---------- */
.marquee {
  border-block: 1px solid var(--line);
  padding-block: 26px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track { display: flex; gap: 64px; width: max-content; animation: scroll-x 30s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { font-family: var(--ff-mono); font-size: 14px; color: var(--text-mut); letter-spacing: 0.05em; white-space: nowrap; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- Signal showcase ---------- */
.signal-stage {
  position: relative;
  margin-top: 52px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  background: #08090a;
  box-shadow: 0 40px 120px -50px rgba(153,204,51,0.25);
}
.signal-stage canvas { display: block; width: 100%; aspect-ratio: 16 / 7; }
.signal-frame {
  position: absolute; inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 120px 10px rgba(0,0,0,0.55);
}
.signal-legend {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  justify-content: space-between;
  padding: 18px clamp(18px, 3vw, 40px);
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-mut);
  pointer-events: none;
}
.signal-legend b { color: var(--green-bright); font-weight: 400; }
.signal-legend span:nth-child(2) { color: var(--text-dim); }
@media (max-width: 680px) {
  .signal-stage canvas { aspect-ratio: 3 / 4; }
  .signal-legend { font-size: 10px; padding-inline: 14px; letter-spacing: 0.08em; }
}

/* ---------- Solutions grid ---------- */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 56px;
}
.card {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px;
  overflow: hidden;
  transition: border-color .4s var(--ease), transform .4s var(--ease), background .4s;
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .4s var(--ease);
  pointer-events: none;
}
.card:hover { transform: translateY(-5px); background: var(--bg-3); }
.card:hover::after { opacity: 1; }
.card.feature { grid-column: span 2; display: flex; flex-direction: column; }

.card-ic {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--grad-soft);
  border: 1px solid var(--line-2);
  display: grid;
  place-items: center;
  margin-bottom: 24px;
}
.card-ic svg { width: 24px; height: 24px; stroke: var(--green-bright); fill: none; stroke-width: 1.6; }
.card h3 { font-family: var(--ff-display); font-weight: 600; font-size: 21px; letter-spacing: -0.01em; }
.card p { color: var(--text-dim); font-size: 15.5px; margin-top: 12px; }
.card-tag { position: absolute; top: 24px; right: 24px; font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--green-bright); border: 1px solid var(--line-2); border-radius: 100px; padding: 4px 10px; }

/* expandable detail panel */
.card-more {
  margin-top: 18px;
  font-family: var(--ff-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--green-bright);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  align-self: flex-start;
}
.card-more svg { width: 13px; height: 13px; transition: transform .3s; }
.card-more[aria-expanded="true"] svg { transform: rotate(45deg); }
.card-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .5s var(--ease);
}
.card-detail > div { overflow: hidden; }
.card-detail.open { grid-template-rows: 1fr; }
.card-detail ul { list-style: none; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 10px; }
.card-detail li { position: relative; padding-left: 20px; font-size: 14.5px; color: var(--text-dim); }
.card-detail li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border-radius: 2px; background: var(--grad); }

/* ---------- About / OS feature ---------- */
.os {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}
.os-visual {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, var(--bg-2), var(--bg));
  aspect-ratio: 4 / 3.4;
  overflow: hidden;
  padding: 26px;
}
.os-window { font-family: var(--ff-mono); font-size: 12.5px; color: var(--text-dim); }
.os-dots { display: flex; gap: 7px; margin-bottom: 22px; }
.os-dots i { width: 11px; height: 11px; border-radius: 50%; background: var(--line-2); }
.os-dots i:first-child { background: var(--green); }
.os-line { display: flex; gap: 10px; padding-block: 5px; opacity: 0; }
.os-line .k { color: var(--green-bright); }
.os-line .v { color: var(--text); }
.os-line .c { color: var(--text-mut); }
.os-bar { margin-top: 18px; height: 6px; border-radius: 100px; background: var(--bg-3); overflow: hidden; }
.os-bar i { display: block; height: 100%; width: 0; background: var(--grad); border-radius: inherit; }

.about-points { margin-top: 36px; display: flex; flex-direction: column; gap: 22px; }
.about-point { display: flex; gap: 18px; }
.about-point .n { font-family: var(--ff-mono); font-size: 13px; color: var(--green-bright); padding-top: 3px; }
.about-point h4 { font-family: var(--ff-display); font-weight: 600; font-size: 18px; }
.about-point p { color: var(--text-dim); font-size: 15px; margin-top: 5px; }

/* ---------- Approach steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 56px; }
.step { border-top: 1px solid var(--line-2); padding-top: 22px; }
.step .n { font-family: var(--ff-mono); font-size: 12px; color: var(--green-bright); letter-spacing: 0.1em; }
.step h4 { font-family: var(--ff-display); font-weight: 600; font-size: 20px; margin-top: 16px; }
.step p { color: var(--text-dim); font-size: 14.5px; margin-top: 10px; }

/* ---------- Blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 56px; }
.post {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-2);
  transition: transform .4s var(--ease), border-color .4s;
  display: flex;
  flex-direction: column;
}
.post:hover { transform: translateY(-5px); border-color: var(--line-2); }
.post-img { aspect-ratio: 16/10; position: relative; overflow: hidden; }
.post-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s var(--ease); }
.post:hover .post-img img { transform: scale(1.05); }
.post-meta { padding: 22px 24px 0; font-family: var(--ff-mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-mut); display: flex; gap: 14px; }
.post h3 { font-family: var(--ff-display); font-weight: 600; font-size: 19px; line-height: 1.25; padding: 14px 24px 0; letter-spacing: -0.01em; }
.post p { color: var(--text-dim); font-size: 14.5px; padding: 12px 24px 0; flex: 1; }
.post-link { padding: 18px 24px 24px; font-family: var(--ff-mono); font-size: 12.5px; color: var(--green-bright); display: inline-flex; align-items: center; gap: 8px; }
.post-link svg { width: 13px; height: 13px; transition: transform .3s; }
.post:hover .post-link svg { transform: translateX(4px); }

/* abstract image placeholders */
.ph {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(135deg, rgba(244,245,242,0.04) 0 2px, transparent 2px 11px),
    var(--bg-3);
  display: grid;
  place-items: center;
}
.ph::after {
  content: attr(data-label);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mut);
}
.ph.grad { background: var(--grad-soft), repeating-linear-gradient(135deg, rgba(244,245,242,0.04) 0 2px, transparent 2px 11px), var(--bg-3); }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; }
.cta-inner {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  padding: clamp(44px, 7vw, 88px);
  overflow: hidden;
  text-align: center;
}
.cta-inner .glow { position: absolute; inset: auto -10% -60% -10%; height: 120%; background: radial-gradient(ellipse at center, rgba(153,204,51,0.20), transparent 60%); pointer-events: none; }
.cta-inner h2 { position: relative; font-family: var(--ff-display); font-weight: 700; font-size: clamp(30px, 5vw, 58px); line-height: 1.04; letter-spacing: -0.03em; text-wrap: balance; }
.cta-inner p { position: relative; color: var(--text-dim); max-width: 540px; margin: 22px auto 0; font-size: 17px; }
.cta-inner .hero-cta { justify-content: center; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding-block: 64px 36px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand img { height: 26px; }
.footer-brand p { color: var(--text-dim); font-size: 14.5px; margin-top: 20px; max-width: 280px; }
.footer-col h5 { font-family: var(--ff-mono); font-size: 11.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-mut); margin-bottom: 18px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.footer-col a { color: var(--text-dim); font-size: 14.5px; transition: color .25s; }
.footer-col a:hover { color: var(--green-bright); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); }
.footer-bottom p { font-size: 13px; color: var(--text-mut); }
.footer-legal { display: flex; gap: 22px; }
.footer-legal a { font-size: 13px; color: var(--text-mut); transition: color .25s; }
.footer-legal a:hover { color: var(--text-dim); }
.socials { display: flex; gap: 10px; }
.socials a { width: 38px; height: 38px; border: 1px solid var(--line-2); border-radius: 11px; display: grid; place-items: center; transition: border-color .3s, background .3s; }
.socials a:hover { border-color: var(--green); background: var(--grad-soft); }
.socials svg { width: 17px; height: 17px; fill: var(--text-dim); }
.socials a:hover svg { fill: var(--green-bright); }

/* ---------- Legal pages (Impressum etc.) ---------- */
.legal-page { padding-top: 76px; }
.legal-hero { padding: clamp(56px,9vw,116px) 0 clamp(28px,4vw,46px); border-bottom: 1px solid var(--line); }
.legal-hero h1 { font-family: var(--ff-display); font-weight: 700; font-size: clamp(36px,6vw,64px); letter-spacing: -0.03em; margin-top: 18px; }
.legal-content { padding-block: clamp(44px,7vw,84px); max-width: 760px; }
.legal-content h2 { font-family: var(--ff-display); font-weight: 600; font-size: 22px; margin-top: 46px; margin-bottom: 14px; letter-spacing: -0.01em; }
.legal-content h2:first-of-type { margin-top: 0; }
.legal-content p { color: var(--text-dim); margin-bottom: 12px; }
.legal-content address { font-style: normal; color: var(--text); line-height: 1.9; }
.legal-content a { color: var(--green-bright); }
.legal-content a:hover { text-decoration: underline; }
.legal-note { font-family: var(--ff-mono); font-size: 12.5px; line-height: 1.7; color: var(--text-mut); background: var(--bg-2); border: 1px dashed var(--line-2); border-radius: 14px; padding: 16px 18px; margin: 0 0 36px; }
.legal-back { font-family: var(--ff-mono); font-size: 13px; color: var(--green-bright); display: inline-flex; gap: 8px; align-items: center; margin-bottom: 26px; }
.legal-back svg { width: 14px; height: 14px; }

/* ---------- Reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: .08s; }
[data-reveal-delay="2"] { transition-delay: .16s; }
[data-reveal-delay="3"] { transition-delay: .24s; }
[data-reveal-delay="4"] { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .orb, .marquee-track, .scroll-hint .bar { animation: none; }
}

/* ---------- Language visibility ---------- */
[data-en] { display: none; }
html[lang="en"] [data-de] { display: none; }
html[lang="en"] [data-en] { display: revert; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .os { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .sol-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .card.feature { grid-column: span 2; }
}
@media (max-width: 860px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu {
    position: fixed;
    inset: 76px 0 auto 0;
    background: rgba(12,13,10,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 20px var(--pad) 32px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s var(--ease), transform .3s var(--ease);
    z-index: 99;
  }
  .mobile-menu.open { transform: none; opacity: 1; pointer-events: auto; }
  .mobile-menu a { padding: 14px 6px; font-size: 17px; border-bottom: 1px solid var(--line); color: var(--text); }
  .mobile-menu .btn { margin-top: 18px; justify-content: center; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .sol-grid, .blog-grid, .steps { grid-template-columns: 1fr; }
  .card.feature { grid-column: span 1; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: span 2; }
  .hero-stats { gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- Phone optimisation (≤560px) ---------- */
@media (max-width: 560px) {
  /* Tighter, less battery-hungry header */
  .nav { height: 62px; }
  .nav-logo img { height: 40px !important; }
  .nav-toggle { width: 40px; height: 40px; }
  .nav-actions { gap: 10px; }
  .header.scrolled { backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
  .mobile-menu { inset: 62px 0 auto 0; }

  /* Hero: don't force a full-height stretch; readable copy over the canvas */
  .hero { min-height: auto; padding-top: 92px; padding-bottom: 64px; }
  .hero-scrim {
    background:
      linear-gradient(180deg, rgba(8,9,10,0.55) 0%, rgba(8,9,10,0.32) 30%, rgba(8,9,10,0.62) 72%, var(--bg) 100%);
  }
  .hero h1 { font-size: clamp(34px, 9vw, 46px); margin-top: 20px; overflow-wrap: break-word; }
  .hero-sub { margin-top: 22px; }
  .hero-cta { margin-top: 30px; gap: 12px; }
  .hero-cta .btn { flex: 1 1 auto; justify-content: center; min-width: 0; }
  .hero-stats { margin-top: 44px; gap: 14px; flex-wrap: nowrap; }
  .hero-stat { flex: 1 1 0; min-width: 0; }
  .hero-stat .num { font-size: 22px; }
  .hero-stat .lbl { font-size: 10px; letter-spacing: 0.06em; }
  .scroll-hint { display: none; }

  /* Comfortable tap targets + generous touch hit areas */
  .btn { padding: 15px 24px; }
  .nav-links a { padding: 11px 16px; }

  /* Cards: trim padding so content isn't cramped on narrow screens */
  .card { padding: 26px 22px; border-radius: 20px; }
  .card-tag { position: static; display: inline-block; margin-bottom: 16px; }
  .card.feature { gap: 0; }
  .card-ic { width: 46px; height: 46px; margin-bottom: 18px; }

  /* Section rhythm: less vertical air on phones */
  .section { padding-block: clamp(56px, 14vw, 80px); }
  .sol-grid, .blog-grid, .steps { margin-top: 40px; }
  .about-points { margin-top: 28px; }

  /* OS terminal: keep it readable, not letterboxed */
  .os-visual { aspect-ratio: auto; padding: 22px 20px; }

  /* Marquee: a touch denser */
  .marquee-track { gap: 44px; }
  .marquee-track span { font-size: 13px; }

  /* CTA band: edge-to-edge feel */
  .cta-inner { padding: 40px 26px; border-radius: 22px; }

  /* Footer: single clean column */
  .footer { padding-block: 48px 32px; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .footer-brand { grid-column: span 1; }
  .footer-brand p { max-width: none; }
  .footer-legal { flex-wrap: wrap; gap: 14px 22px; }
}

/* Very small phones (≤380px) */
@media (max-width: 380px) {
  .hero-stats { gap: 10px; }
  .hero-stat .num { font-size: 19px; }
  .hero-stat .lbl { font-size: 9px; letter-spacing: 0.04em; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
}
.mobile-menu { display: none; }
@media (max-width: 860px) { .mobile-menu { display: flex; } }