:root {
  --background:        hsl(220, 30%, 7%);
  --foreground:        hsl(210, 20%, 90%);
  --card:              hsl(220, 25%, 10%);
  --primary:           hsl(185, 80%, 50%);
  --primary-fg:        hsl(220, 30%, 7%);
  --muted-foreground:  hsl(215, 15%, 55%);
  --border:            hsl(220, 20%, 18%);
  --navy-deep:         hsl(220, 35%, 5%);
  --warning-amber:     hsl(38, 90%, 55%);
  --font-sans:  'Inter', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --max-w: 1400px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
input, textarea, button { font-family: inherit; }

/* ── Section backgrounds ── */
.section-blueprint {
  position: relative;
  background-color: var(--background);
  background-image:
    linear-gradient(hsl(185 80% 50% / 0.03) 1px, transparent 1px),
    linear-gradient(90deg, hsl(185 80% 50% / 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
}
.section-navy {
  position: relative;
  background-color: var(--navy-deep);
}
.bg-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(hsl(220 20% 15% / 0.5) 1px, transparent 1px),
    linear-gradient(90deg, hsl(220 20% 15% / 0.5) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.2;
  pointer-events: none;
  z-index: 0;
}
.bg-grid-overlay--subtle { opacity: 0.1; }

/* ── Utilities ── */
.glow-cyan {
  box-shadow: 0 0 20px hsl(185 80% 50% / 0.15), 0 0 60px hsl(185 80% 50% / 0.05);
}
.text-gradient-cyan {
  background: linear-gradient(135deg, hsl(185, 80%, 50%), hsl(195, 85%, 65%));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-cyan { color: var(--primary); }

/* ── Corner accents ── */
:root {
  --ca-color: hsl(185 80% 50% / 0.4);
  --ca-size: 12px;
  --ca-w: 1.5px;
}
.corner-accents {
  background-image:
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color));
  background-repeat: no-repeat;
  background-size:
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w);
  background-position:
    top left, top left,
    top right, top right,
    bottom left, bottom left,
    bottom right, bottom right;
  background-color: var(--card);
}
.corner-accents-amber {
  --ca-color: hsl(38 90% 55% / 0.5);
  --ca-size: 16px;
  --ca-w: 2px;
  background-image:
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color));
  background-repeat: no-repeat;
  background-size:
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w);
  background-position:
    top left, top left,
    top right, top right,
    bottom left, bottom left,
    bottom right, bottom right;
  background-color: var(--card);
}

/* ── Scan line ── */
.scan-line {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, hsl(185 80% 50% / 0.05) 50%, transparent 100%);
  animation: scan 4s linear infinite;
  pointer-events: none;
  z-index: 3;
}
@keyframes scan {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100%); }
}

/* ── Section label ── */
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-label--center { justify-content: center; }
.section-label__line {
  display: inline-block;
  width: 48px;
  height: 1px;
  background: var(--primary);
  flex-shrink: 0;
}

/* ── Section heading ── */
.section-heading {
  font-family: var(--font-sans);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 900;
  color: var(--foreground);
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  line-height: 1.05;
}
.section-heading--center { text-align: center; }

/* ── Section inner ── */
.section-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 96px 64px;
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 13px 28px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-align: center;
}
.btn--primary {
  background: var(--primary);
  color: var(--primary-fg);
  border-color: var(--primary);
}
.btn--primary:hover { background: hsl(185 80% 60%); }
.btn--ghost {
  background: hsl(220, 25%, 12%);
  color: var(--foreground);
  border-color: hsl(220, 20%, 22%);
}
.btn--ghost:hover { border-color: hsl(185 80% 50% / 0.5); color: var(--primary); }
.btn--outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn--outline:hover { background: hsl(185 80% 50% / 0.1); }
.btn--full { width: 100%; padding: 16px; font-size: 12px; }

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 80px;
  background: transparent;
  transition: background 0.3s ease;
}
.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav--scrolled {
  background: hsl(220, 32%, 5% / 0.92);
  backdrop-filter: blur(16px);
  border-bottom-color: hsl(220 20% 18%);
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav__logo-img {
  height: 28px;
  width: auto;
  object-fit: contain;
}
.nav__logo-text {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--foreground);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 44px;
}
.nav__links a {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: hsl(215 15% 65%);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--foreground); }

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero__bg-overlay {
  position: absolute;
  inset: 0;
  background: hsl(220 30% 7% / 0.85);
}
.hero__bg-blueprint {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(hsl(185 80% 50% / 0.03) 1px, transparent 1px),
    linear-gradient(90deg, hsl(185 80% 50% / 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
}
.hero__grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(hsl(220 20% 15% / 0.5) 1px, transparent 1px),
    linear-gradient(90deg, hsl(220 20% 15% / 0.5) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.3;
  z-index: 2;
  pointer-events: none;
}
.hero__content {
  position: relative;
  z-index: 4;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 140px 40px 80px;
}
.hero__headline {
  font-family: var(--font-sans);
  font-size: clamp(32px, 4.5vw, 60px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--foreground);
  margin-bottom: 20px;
}
.hero__body {
  font-size: 15px;
  color: var(--muted-foreground);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 14px;
  font-weight: 400;
}
.hero__specs {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}
.hero__spec {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-foreground);
}
.hero__spec-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse-dot 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; box-shadow: 0 0 8px var(--primary); }
}
.hero__spec-divider { color: var(--border); font-size: 14px; }
.hero__ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__readout {
  position: absolute;
  bottom: 60px;
  right: 64px;
  z-index: 4;
  font-family: var(--font-mono);
  font-size: 10px;
  color: hsl(215 15% 55% / 0.45);
  text-align: right;
  line-height: 2;
  letter-spacing: 0.05em;
}
.hero__readout-val { color: hsl(185 80% 50% / 0.35); }
.hero__scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  opacity: 0.45;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(7px); }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 32px;
  position: relative;
  transition: border-color 0.3s;
}
.card:hover { border-color: hsl(185 80% 50% / 0.3); }

.card-corner {
  position: absolute;
  width: 12px;
  height: 12px;
  pointer-events: none;
}
.card-corner--tl { top: 0;    left: 0;  border-top:    1px solid hsl(185 80% 50% / 0.4); border-left:   1px solid hsl(185 80% 50% / 0.4); }
.card-corner--tr { top: 0;    right: 0; border-top:    1px solid hsl(185 80% 50% / 0.4); border-right:  1px solid hsl(185 80% 50% / 0.4); }
.card-corner--bl { bottom: 0; left: 0;  border-bottom: 1px solid hsl(185 80% 50% / 0.4); border-left:   1px solid hsl(185 80% 50% / 0.4); }
.card-corner--br { bottom: 0; right: 0; border-bottom: 1px solid hsl(185 80% 50% / 0.4); border-right:  1px solid hsl(185 80% 50% / 0.4); }

.card__icon {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--muted-foreground);
  border: 1px solid var(--border);
  padding: 2px 8px;
}
.card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 4px;
}
.card__subtitle {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--primary);
  margin-bottom: 14px;
}
.card__body {
  font-size: 13.5px;
  color: var(--muted-foreground);
  line-height: 1.7;
  margin-bottom: 24px;
}
.card__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat__label { font-family: var(--font-mono); font-size: 10px; color: var(--muted-foreground); }
.stat__value { font-family: var(--font-mono); font-size: 14px; font-weight: 600; color: var(--foreground); }

.caps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.mat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.mat-card {
  background: hsl(220 25% 10% / 0.5);
  border: 1px solid var(--border);
  padding: 24px;
  transition: border-color 0.3s, background 0.3s;
}
.mat-card:hover { border-color: hsl(185 80% 50% / 0.3); background: var(--card); }
.mat-card--active { border-color: hsl(185 80% 50% / 0.25); background: var(--card); }
.mat-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}
.mat-card__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--muted-foreground);
  border: 1px solid var(--border);
  padding: 2px 8px;
}
.mat-card__title { font-size: 15px; font-weight: 700; color: var(--foreground); margin-bottom: 8px; }
.mat-card__body { font-size: 13px; color: var(--muted-foreground); line-height: 1.65; }

.advisory__box {
  border: 1px solid hsl(38 90% 55% / 0.3);
  padding: 48px 56px;
  max-width: 900px;
  margin: 0 auto;
}
.advisory__header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 24px;
}
.advisory__icon {
  width: 48px;
  height: 48px;
  border: 1px solid hsl(38 90% 55% / 0.3);
  background: hsl(38 90% 55% / 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 4px;
}
.advisory__title {
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 900;
  color: var(--foreground);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.advisory__subtitle {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--warning-amber);
}
.advisory__lead {
  font-size: 14.5px;
  color: var(--muted-foreground);
  line-height: 1.75;
  margin-bottom: 28px;
}
.advisory__risks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 32px;
}
.advisory__risk {
  border: 1px solid var(--border);
  background: var(--background);
  padding: 16px;
}
.advisory__risk svg { margin-bottom: 10px; display: block; }
.advisory__risk h4 { font-size: 13px; font-weight: 600; color: var(--foreground); margin-bottom: 4px; }
.advisory__risk p { font-size: 12px; color: var(--muted-foreground); line-height: 1.5; }
.advisory__footer { border-top: 1px solid var(--border); padding-top: 24px; }
.advisory__conclusion { font-size: 14px; font-weight: 500; color: var(--foreground); margin-bottom: 12px; line-height: 1.65; }
.advisory__note { font-size: 13.5px; color: var(--muted-foreground); line-height: 1.65; }

.ind-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 20px;
  align-items: stretch;
}
.ind-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 14px;
}
.ind-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 22px;
  transition: border-color 0.3s;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.ind-card:hover { border-color: hsl(185 80% 50% / 0.3); }
.ind-card svg { margin-bottom: 12px; display: block; }
.ind-card__title { font-size: 16px; font-weight: 700; color: var(--foreground); margin-bottom: 4px; }
.ind-card__subs { font-family: var(--font-mono); font-size: 12px; color: var(--muted-foreground); line-height: 1.6; }
.ind-certs { background: var(--card); border: 1px solid var(--border); padding: 28px; display: flex; flex-direction: column; }
.ind-certs__list { flex: 1; }
.ind-certs__header { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.ind-certs__header h3 { font-size: 17px; font-weight: 700; color: var(--foreground); }
.ind-certs__list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.ind-certs__list li { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--muted-foreground); }
.ind-certs__list svg { flex-shrink: 0; }
.ind-stats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--border); padding-top: 22px; text-align: center; }
.ind-stat { padding: 0 8px; }
.ind-stat + .ind-stat { border-left: 1px solid var(--border); }
.ind-stat__num { font-size: 26px; font-weight: 900; color: var(--primary); display: block; }
.ind-stat__label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; color: var(--muted-foreground); }

.contact__subheading {
  font-size: 14.5px;
  color: var(--muted-foreground);
  max-width: 540px;
  margin: -32px auto 48px;
  text-align: center;
  line-height: 1.7;
}
.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
}
.upload-zone {
  --ca-color: hsl(185 80% 50% / 0.35);
  --ca-size: 12px;
  --ca-w: 1.5px;
  border: 1.5px dashed hsl(215 15% 35%);
  padding: 72px 40px 40px;
  cursor: pointer;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  text-align: center;
  transition: border-color 0.3s;
  background-image:
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color)),
    linear-gradient(var(--ca-color), var(--ca-color));
  background-repeat: no-repeat;
  background-size:
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w),
    var(--ca-w) var(--ca-size), var(--ca-size) var(--ca-w);
  background-position:
    top left, top left,
    top right, top right,
    bottom left, bottom left,
    bottom right, bottom right;
  background-color: transparent;
}
.upload-zone:hover { border-color: hsl(185 80% 50% / 0.5); background: hsl(185 80% 50% / 0.02); }
.upload-zone__label { font-size: 16px; font-weight: 700; color: var(--foreground); margin-top: 10px; }
.upload-zone__formats { font-family: var(--font-mono); font-size: 11px; color: var(--muted-foreground); letter-spacing: 0.1em; }
.upload-zone__limit { font-family: var(--font-mono); font-size: 11px; color: var(--primary); letter-spacing: 0.08em; font-weight: 500; }
.upload-zone__note { font-size: 12.5px; color: var(--muted-foreground); line-height: 1.65; }
.upload-zone__meta { margin-top: auto; padding-top: 32px; width: 100%; text-align: left; display: flex; flex-direction: column; gap: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; color: var(--muted-foreground); text-transform: uppercase; }
.form-input {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--foreground);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 11px 13px;
  outline: none;
  width: 100%;
  transition: border-color 0.2s;
  border-radius: 0;
}
.form-input::placeholder { color: var(--muted-foreground); }
.form-input:focus { border-color: var(--primary); }
.form-textarea { resize: none; min-height: 110px; }
.contact__trust { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.07em; color: var(--muted-foreground); text-align: center; margin-top: 12px; }

.footer {
  position: relative;
  background: var(--navy-deep);
  border-top: 1px solid var(--border);
}
.footer__inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 64px;
  display: grid;
  grid-template-columns: 1.5fr 1.2fr 1fr;
  gap: 56px;
}
.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  margin-bottom: 14px;
}
.footer__tagline { font-size: 13.5px; color: var(--muted-foreground); line-height: 1.65; margin-bottom: 20px; }
.footer__copy { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.05em; color: var(--muted-foreground); }
.footer__col-heading { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.3em; color: var(--primary); margin-bottom: 18px; }
.footer__contact-item { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: var(--muted-foreground); line-height: 1.6; margin-bottom: 14px; }
.footer__links { display: flex; flex-direction: column; gap: 12px; }
.footer__links a { font-size: 13.5px; color: var(--muted-foreground); transition: color 0.2s; }
.footer__links a:hover { color: var(--primary); }

.file-list { width: 100%; margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  padding: 10px 12px;
  gap: 12px;
}
.file-item__name { font-family: var(--font-mono); font-size: 11px; color: var(--foreground); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-item__size { font-family: var(--font-mono); font-size: 10px; color: var(--muted-foreground); white-space: nowrap; }

.upload-zone--active {
  border-color: hsl(185, 80%, 50%) !important;
  background: hsl(185 80% 50% / 0.04) !important;
}

.file-list { width: 100%; margin-top: 16px; display: flex; flex-direction: column; gap: 6px; }
.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 9px 12px;
  text-align: left;
}
.file-item__name { font-family: var(--font-mono); font-size: 11px; color: var(--foreground); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.file-item__size { font-family: var(--font-mono); font-size: 10px; color: var(--muted-foreground); white-space: nowrap; }

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 101;
  flex-shrink: 0;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--foreground);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 1024px) {
  .section-inner { padding: 80px 48px; }
  .caps-grid { grid-template-columns: repeat(2, 1fr); }
  .advisory__risks { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 40px; padding: 48px 48px; }
}

@media (max-width: 860px) {
  .section-inner { padding: 72px 36px; }
  .section-heading { margin-bottom: 36px; }

  .mat-grid { grid-template-columns: repeat(2, 1fr); }

  .ind-layout { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: repeat(3, 1fr); }

  .advisory__box { padding: 36px 32px; }

  .contact__layout { grid-template-columns: 1fr; max-width: 560px; }
  .contact__subheading { margin-bottom: 36px; }

  .footer__inner { grid-template-columns: 1fr 1fr; padding: 48px 36px; gap: 36px; }
}

@media (max-width: 640px) {
  /* ── Nav ── */
  .nav__inner { padding: 0 20px; }
  .nav__quote-btn { display: none; }
  .nav__hamburger { display: flex; }
  .nav__links {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: hsl(220 32% 4% / 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 8px 0 16px;
    z-index: 99;
  }
  .nav__links.is-open { display: flex; }
  .nav__links li { border-bottom: 1px solid hsl(220 20% 13%); }
  .nav__links a {
    display: block;
    padding: 16px 24px;
    font-size: 12px;
    letter-spacing: 0.2em;
  }

  /* ── Sections ── */
  .section-inner { padding: 60px 20px; }
  .section-heading { margin-bottom: 28px; }

  /* ── Hero ── */
  .hero__content { padding: 100px 20px 48px; }
  .hero__readout { display: none; }
  .hero__specs { flex-wrap: wrap; gap: 8px; }
  .hero__spec-divider { display: none; }
  .hero__ctas { flex-direction: column; align-items: flex-start; gap: 10px; }

  /* ── Capabilities ── */
  .caps-grid { grid-template-columns: 1fr; }

  /* ── Materials ── */
  .mat-grid { grid-template-columns: 1fr; }

  /* ── Advisory ── */
  .advisory__box { padding: 28px 20px; max-width: 100%; }
  .advisory__risks { grid-template-columns: 1fr; gap: 10px; }

  /* ── Industries ── */
  .ind-layout { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }

  /* ── Contact ── */
  .contact__layout { grid-template-columns: 1fr; max-width: 100%; }
  .contact__subheading { margin-top: 0; margin-bottom: 32px; }
  .upload-zone { min-height: 300px; padding: 48px 24px 32px; }

  /* ── Footer ── */
  .footer__inner { grid-template-columns: 1fr; padding: 48px 20px; gap: 32px; }
}

@media (max-width: 420px) {
  .section-inner { padding: 48px 16px; }

  .hero__content { padding: 88px 16px 40px; }

  .caps-grid { gap: 14px; }
  .card { padding: 24px; }
  .card__stats { grid-template-columns: repeat(3, 1fr); }

  .ind-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }

  .advisory__box { padding: 24px 16px; }
  .advisory__risks { grid-template-columns: 1fr; }

  .footer__inner { padding: 40px 16px; gap: 28px; }
  .footer__inner { grid-template-columns: 1fr; }
}