/* ---------- Themes ---------- */
:root, [data-theme="midnight"] {
  --bg: #060a13; --bg-2: #0a1020;
  --text: #e6edf7; --muted: #8b98ad; --tag-text: #b7c3d6;
  --a: #22d3ee; --b: #3b82f6; --c: #818cf8;
  --a-rgb: 34, 211, 238; --b-rgb: 59, 130, 246;
  --ink-rgb: 255, 255, 255;
  --on-accent: #04111d;
  --nav-bg: rgba(6, 10, 19, .78); --nav-solid: rgba(6, 10, 19, .97);
  --input-bg: rgba(6, 10, 19, .6);
  --pcb-1: #0b1628; --pcb-2: #071019; --pin: #c9a24a;
  --band-1: #0c1a30; --band-2: #081120;
  --canvas-alpha: 1;
}
[data-theme="light"] {
  --bg: #f5f7fb; --bg-2: #eaf0f7;
  --text: #0b1220; --muted: #586379; --tag-text: #334155;
  --a: #0891b2; --b: #2563eb; --c: #7c3aed;
  --a-rgb: 8, 145, 178; --b-rgb: 37, 99, 235;
  --ink-rgb: 15, 23, 42;
  --on-accent: #ffffff;
  --nav-bg: rgba(245, 247, 251, .82); --nav-solid: rgba(245, 247, 251, .98);
  --input-bg: #ffffff;
  --pcb-1: #0b1628; --pcb-2: #071019; --pin: #c9a24a;
  --band-1: #e0ecfb; --band-2: #f1f6fd;
  --canvas-alpha: 1.6;
}
[data-theme="pcb"] {
  --bg: #040c08; --bg-2: #07140e;
  --text: #edf3ef; --muted: #8ea597; --tag-text: #c3d3c9;
  --a: #e3b053; --b: #d9763d; --c: #f5d58a;
  --a-rgb: 227, 176, 83; --b-rgb: 217, 118, 61;
  --ink-rgb: 255, 255, 255;
  --on-accent: #1a1206;
  --nav-bg: rgba(4, 12, 8, .8); --nav-solid: rgba(4, 12, 8, .97);
  --input-bg: rgba(4, 12, 8, .6);
  --pcb-1: #0d2e1f; --pcb-2: #06190f; --pin: #e3b053;
  --band-1: #10261a; --band-2: #07140e;
  --canvas-alpha: 1;
}
[data-theme="ember"] {
  --bg: #09090b; --bg-2: #111114;
  --text: #f3f3f4; --muted: #9b9ba6; --tag-text: #cfcfd6;
  --a: #fb923c; --b: #ef4444; --c: #fbbf24;
  --a-rgb: 251, 146, 60; --b-rgb: 239, 68, 68;
  --ink-rgb: 255, 255, 255;
  --on-accent: #1a0a02;
  --nav-bg: rgba(9, 9, 11, .8); --nav-solid: rgba(9, 9, 11, .97);
  --input-bg: rgba(9, 9, 11, .6);
  --pcb-1: #18181c; --pcb-2: #0d0d10; --pin: #fbbf24;
  --band-1: #1f140e; --band-2: #111114;
  --canvas-alpha: 1;
}
[data-theme="aurora"] {
  --bg: #07061a; --bg-2: #0d0b26;
  --text: #ecebff; --muted: #9d9ac2; --tag-text: #cbc8ee;
  --a: #a78bfa; --b: #22d3ee; --c: #f472b6;
  --a-rgb: 167, 139, 250; --b-rgb: 34, 211, 238;
  --ink-rgb: 255, 255, 255;
  --on-accent: #0b0820;
  --nav-bg: rgba(7, 6, 26, .78); --nav-solid: rgba(7, 6, 26, .97);
  --input-bg: rgba(7, 6, 26, .6);
  --pcb-1: #15123a; --pcb-2: #0a0822; --pin: #f0c674;
  --band-1: #1a1546; --band-2: #0d0b26;
  --canvas-alpha: 1;
}

:root {
  --surface: rgba(var(--ink-rgb), .035);
  --border: rgba(var(--ink-rgb), .08);
  --border-strong: rgba(var(--ink-rgb), .16);
  --grad: linear-gradient(110deg, var(--a) 0%, var(--b) 60%, var(--c) 100%);
  --radius: 18px;
  --font: "Inter", system-ui, sans-serif;
  --display: "Inter Tight", "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .5s, color .5s;
}
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--display); line-height: 1.1; margin: 0; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0; }

.container { width: min(1200px, 100% - 32px); margin-inline: auto; }
.stop-a { stop-color: var(--a); } .stop-b { stop-color: var(--b); }
.fill-a { fill: var(--a); } .fill-b { fill: var(--b); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent; cursor: pointer; transition: transform .2s, box-shadow .3s, background .3s, border-color .3s;
  font-family: var(--font);
}
.btn--primary { background: var(--grad); color: var(--on-accent); box-shadow: 0 8px 30px -8px rgba(var(--a-rgb), .55); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -8px rgba(var(--a-rgb), .7); }
.btn--ghost { border-color: var(--border-strong); color: var(--text); background: rgba(var(--ink-rgb), .02); backdrop-filter: blur(6px); }
.btn--ghost:hover { border-color: var(--a); color: var(--a); }
.btn--ghost svg { transition: transform .2s; }
.btn--ghost:hover svg { transform: translateX(4px); }
.btn--sm { padding: 10px 18px; font-size: 0.85rem; }
.btn--block { width: 100%; }

/* ---------- Nav ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .3s, border-color .3s; border-bottom: 1px solid transparent; }
.nav.scrolled { background: var(--nav-bg); backdrop-filter: blur(14px) saturate(140%); border-color: var(--border); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo__mark { width: 34px; height: 34px; }
.logo__text { font: 800 1.3rem/1 var(--display); letter-spacing: 0.12em; }
.nav__links { display: flex; gap: 32px; font-size: 0.92rem; color: var(--muted); }
.nav__links a { position: relative; transition: color .2s; }
.nav__links a:hover { color: var(--text); }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--grad); transition: width .3s; }
.nav__links a:hover::after { width: 100%; }
.nav__cta-mobile { display: none; }
.nav__actions { display: flex; align-items: center; gap: 12px; }
.lang {
  display: flex; padding: 3px; border-radius: 999px; border: 1px solid var(--border-strong);
  background: transparent; cursor: pointer; font: 500 0.75rem var(--mono);
}
.lang span { padding: 4px 9px; border-radius: 999px; color: var(--muted); transition: all .25s; }
html[lang="el"] .lang [data-l="el"], html[lang="en"] .lang [data-l="en"] { background: rgba(var(--a-rgb), .15); color: var(--a); }
.burger { display: none; width: 40px; height: 40px; border: 0; background: none; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 10px; right: 10px; height: 2px; background: var(--text); transition: transform .3s, top .3s; }
.burger span:first-child { top: 15px; } .burger span:last-child { top: 23px; }
.nav.open .burger span:first-child { top: 19px; transform: rotate(45deg); }
.nav.open .burger span:last-child { top: 19px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; overflow: hidden; padding: 120px 0 80px; }
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero__glow {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 75% 30%, rgba(var(--b-rgb), .18), transparent 70%),
    radial-gradient(50% 40% at 15% 80%, rgba(var(--a-rgb), .12), transparent 70%),
    linear-gradient(to bottom, transparent 70%, var(--bg));
}
.hero__content { position: relative; z-index: 2; max-width: 900px; margin-left: max(16px, calc((100% - 1200px) / 2)); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 12px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: rgba(var(--ink-rgb), .03); backdrop-filter: blur(8px);
  font: 500 0.78rem var(--mono); color: var(--muted); letter-spacing: 0.04em; margin-bottom: 28px;
}
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--a); box-shadow: 0 0 0 0 rgba(var(--a-rgb), .6); animation: pulse 2s infinite; flex: none; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(var(--a-rgb), 0); } 100% { box-shadow: 0 0 0 0 rgba(var(--a-rgb), 0); } }
.hero__title { font-size: clamp(2.6rem, 7vw, 5.4rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1.02; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__lead { margin-top: 26px; font-size: clamp(1.02rem, 1.6vw, 1.2rem); color: var(--muted); max-width: 620px; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.hero__chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 48px; }
.chip { font: 500 0.74rem var(--mono); color: var(--muted); padding: 6px 12px; border: 1px solid var(--border); border-radius: 8px; background: rgba(var(--ink-rgb), .02); backdrop-filter: blur(4px); }
.hero__scroll { position: absolute; bottom: 28px; left: 50%; translate: -50% 0; width: 26px; height: 42px; border: 2px solid var(--border-strong); border-radius: 14px; z-index: 2; }
.hero__scroll span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--a); animation: scroll 1.8s infinite; }
@keyframes scroll { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- Marquee ---------- */
.marquee { border-block: 1px solid var(--border); background: var(--bg-2); overflow: hidden; padding: 20px 0; mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee__track { display: flex; gap: 56px; width: max-content; animation: marquee 40s linear infinite; }
.marquee__track span { font: 500 0.95rem var(--mono); color: var(--muted); white-space: nowrap; display: flex; align-items: center; gap: 56px; }
.marquee__track span::after { content: "◆"; font-size: .5rem; color: var(--a); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: clamp(80px, 12vw, 140px) 0; position: relative; }
.section__head { max-width: 760px; margin-bottom: 64px; }
.kicker { font: 500 0.8rem var(--mono); color: var(--a); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 18px; }
.section__lead { color: var(--muted); font-size: 1.08rem; margin-top: 20px; max-width: 640px; }

/* ---------- Services ---------- */
.grid.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  position: relative; padding: 32px; border-radius: var(--radius); border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(var(--ink-rgb), .04), rgba(var(--ink-rgb), .01));
  transition: border-color .3s, transform .25s ease-out; overflow: hidden; transform-style: preserve-3d;
}
[data-theme="light"] .card, [data-theme="light"] .stat, [data-theme="light"] .form, [data-theme="light"] .cert { background: #fff; box-shadow: 0 1px 2px rgba(15,23,42,.04), 0 10px 30px -12px rgba(15,23,42,.12); }
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(var(--a-rgb), .12), transparent 50%);
}
.card:hover { border-color: rgba(var(--a-rgb), .35); }
.card:hover::before { opacity: 1; }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 24px;
  background: linear-gradient(135deg, rgba(var(--a-rgb), .15), rgba(var(--b-rgb), .12)); border: 1px solid rgba(var(--a-rgb), .25);
}
.card__icon svg { width: 26px; height: 26px; fill: none; stroke: var(--a); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 0.95rem; }
.card__list { list-style: none; padding: 20px 0 0; margin: 22px 0 0; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: 6px; }
.card__list li { font: 500 0.72rem var(--mono); color: var(--tag-text); padding: 4px 10px; border-radius: 6px; background: rgba(var(--ink-rgb), .04); }

/* ---------- Lab ---------- */
.lab { background: radial-gradient(70% 60% at 80% 50%, rgba(var(--b-rgb), .08), transparent 70%), var(--bg-2); border-block: 1px solid var(--border); }
.lab__inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.certs { display: grid; gap: 10px; margin-top: 36px; }
.cert { display: grid; grid-template-columns: 150px 1fr; gap: 16px; align-items: center; padding: 14px 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); transition: border-color .3s, transform .3s; }
.cert:hover { border-color: rgba(var(--a-rgb), .35); transform: translateX(6px); }
.cert b { font: 500 0.85rem var(--mono); color: var(--a); }
.cert span { color: var(--muted); font-size: 0.9rem; }
.pcb { position: relative; aspect-ratio: 1; border-radius: 28px; border: 1px solid var(--border); padding: 24px;
  background:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px) 0 0 / 20px 20px,
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px) 0 0 / 20px 20px,
    linear-gradient(160deg, var(--pcb-1), var(--pcb-2));
  box-shadow: 0 40px 100px -30px rgba(var(--a-rgb), .3), inset 0 0 0 1px rgba(255,255,255,.03);
}
.pcb__svg { width: 100%; height: 100%; }
.traces path { stroke-dasharray: 400; stroke-dashoffset: 400; }
.lab__visual.in .traces path { animation: draw 2.4s ease-out forwards; }
.lab__visual.in .traces path:nth-child(2n) { animation-delay: .3s; }
.lab__visual.in .traces path:nth-child(3n) { animation-delay: .6s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.traces { animation: flicker 4s ease-in-out infinite; }
@keyframes flicker { 50% { opacity: .65; } }
.chip-body { fill: #0d1626; stroke: rgba(var(--a-rgb), .4); stroke-width: 1.5; }
.chip-core { fill: url(#tr); opacity: .08; }
.pins rect { fill: var(--pin); }
.pads circle { fill: var(--pcb-1); stroke: var(--pin); stroke-width: 2.5; }
.chip-label { font: 800 22px var(--display); fill: #e6edf7; letter-spacing: .15em; }
.chip-sub { font: 500 9px var(--mono); fill: var(--a); letter-spacing: .15em; }
.pcb__badge { position: absolute; left: 24px; bottom: 24px; display: flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 8px; background: rgba(6,10,19,.8); border: 1px solid rgba(255,255,255,.16); font: 500 0.7rem var(--mono); letter-spacing: .1em; color: var(--a); }

/* ---------- Process ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.steps::before { content: ""; position: absolute; top: 22px; left: 22px; right: 22px; height: 1px; background: linear-gradient(90deg, var(--a), var(--b), transparent); opacity: .5; }
.step { position: relative; padding-top: 70px; }
.step__n { position: absolute; top: 0; left: 0; width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; background: var(--bg); border: 1px solid rgba(var(--a-rgb), .45); font: 500 0.8rem var(--mono); color: var(--a); box-shadow: 0 0 24px rgba(var(--a-rgb), .25); }
.step h3 { margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 0.95rem; }

/* ---------- About ---------- */
.about__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat { padding: 30px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.stat b, .stat .plus { font: 800 clamp(2.2rem, 4vw, 3rem)/1 var(--display); letter-spacing: -0.03em; }
.stat .plus { color: var(--a); }
.stat p { color: var(--muted); font-size: 0.9rem; margin-top: 10px; }

/* ---------- Band ---------- */
.band { padding: 0 0 clamp(80px, 10vw, 120px); }
.band__inner {
  text-align: center; padding: clamp(48px, 8vw, 88px) 24px; border-radius: 28px; position: relative; overflow: hidden;
  background: radial-gradient(80% 120% at 50% 0%, rgba(var(--a-rgb), .18), transparent 60%), linear-gradient(160deg, var(--band-1), var(--band-2));
  border: 1px solid rgba(var(--a-rgb), .2);
}
.band__inner p { color: var(--muted); margin: 16px auto 32px; max-width: 520px; font-size: 1.08rem; }

/* ---------- Contact ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.contact__list { list-style: none; padding: 0; margin: 36px 0 0; display: grid; gap: 16px; }
.contact__list li { display: flex; align-items: center; gap: 14px; color: var(--text); }
.contact__list svg { width: 40px; height: 40px; padding: 10px; border-radius: 10px; border: 1px solid var(--border); fill: none; stroke: var(--a); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.contact__list a:hover { color: var(--a); }
.form { padding: clamp(24px, 4vw, 40px); border-radius: 22px; border: 1px solid var(--border); background: linear-gradient(180deg, rgba(var(--ink-rgb), .04), rgba(var(--ink-rgb), .01)); display: grid; gap: 18px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 8px; font-size: 0.82rem; color: var(--muted); font-weight: 500; }
.form input, .form select, .form textarea {
  width: 100%; padding: 13px 15px; border-radius: 11px; border: 1px solid var(--border-strong);
  background: var(--input-bg); color: var(--text); font: 400 0.95rem var(--font); transition: border-color .2s, box-shadow .2s; resize: vertical;
}
.form select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
.form select option { background: var(--bg-2); }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--a); box-shadow: 0 0 0 4px rgba(var(--a-rgb), .12); }
.form .invalid { border-color: #f87171; }
.hp { position: absolute; left: -9999px; }
.form__status { font-size: 0.9rem; min-height: 1.4em; text-align: center; }
.form__status.ok { color: #16a34a; } .form__status.err { color: #ef4444; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer__tag { color: var(--muted); font-size: 0.85rem; margin-top: 8px; }
.footer__copy { color: var(--muted); font-size: 0.85rem; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Theme picker (preview tool — remove before launch) ---------- */
.tweak { position: fixed; right: 18px; bottom: 18px; z-index: 100; font-family: var(--font); }
.tweak__fab {
  width: 54px; height: 54px; border-radius: 50%; border: 1px solid var(--border-strong); cursor: pointer;
  background: var(--nav-solid); color: var(--text); display: grid; place-items: center;
  box-shadow: 0 10px 30px -8px rgba(0,0,0,.5), 0 0 0 4px rgba(var(--a-rgb), .12); transition: transform .2s;
}
.tweak__fab:hover { transform: rotate(-20deg) scale(1.05); }
.tweak__fab svg { width: 24px; height: 24px; fill: none; stroke: var(--a); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tweak__panel {
  position: absolute; right: 0; bottom: 66px; width: min(330px, calc(100vw - 36px)); padding: 18px; border-radius: 18px;
  background: var(--nav-solid); backdrop-filter: blur(16px); border: 1px solid var(--border-strong);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.55); opacity: 0; transform: translateY(10px) scale(.98); pointer-events: none;
  transition: opacity .25s, transform .25s; max-height: calc(100vh - 110px); overflow-y: auto;
}
.tweak.open .tweak__panel { opacity: 1; transform: none; pointer-events: auto; }
.tweak__label { font: 500 0.7rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 4px 0 10px; }
.tweak__label:not(:first-child) { margin-top: 18px; }
.tweak__opts { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tweak__opt {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--border); background: rgba(var(--ink-rgb), .03); color: var(--text); font: 500 0.82rem var(--font); text-align: left;
  transition: border-color .2s, background .2s;
}
.tweak__opt:hover { border-color: var(--border-strong); }
.tweak__opt.active { border-color: var(--a); background: rgba(var(--a-rgb), .12); }
.tweak__sw { width: 22px; height: 22px; border-radius: 6px; flex: none; border: 1px solid rgba(255,255,255,.15); }
.tweak__ico { font-size: 1rem; width: 22px; text-align: center; flex: none; }
.tweak__note { font-size: 0.75rem; color: var(--muted); margin-top: 14px; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .grid.services { grid-template-columns: 1fr 1fr; }
  .lab__inner, .about__grid, .contact { grid-template-columns: 1fr; gap: 48px; }
  .lab__visual { max-width: 460px; width: 100%; margin-inline: auto; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .steps::before { display: none; }
}
@media (max-width: 820px) {
  .nav__cta { display: none; }
  .burger { display: block; }
  .nav__links {
    position: fixed; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px 16px 24px;
    background: var(--nav-solid); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border);
    transform: translateY(-120%); transition: transform .35s ease; z-index: -1;
  }
  .nav__links a { padding: 16px 0; border-bottom: 1px solid var(--border); font-size: 1.05rem; color: var(--text); }
  .nav__links a::after { display: none; }
  .nav__cta-mobile { display: block; color: var(--a) !important; border-bottom: 0 !important; }
  .nav.open .nav__links { transform: none; }
  .nav.open { background: var(--nav-solid); }
}
@media (max-width: 620px) {
  .grid.services, .steps, .form__row { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat { padding: 22px; }
  .cert { grid-template-columns: 1fr; gap: 4px; }
  .card { padding: 26px; }
  .hero__ctas .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .traces path { stroke-dashoffset: 0; }
}