/* GB Nest marketing site
   Brand palette: deep blue #1F3A5F, accent #2E5C8A, soft #F5F7FA */

:root {
  --c-ink: #0d1b2a;
  --c-text: #1a1a1a;
  --c-muted: #5a6573;
  --c-line: #e3e7ee;
  --c-bg: #ffffff;
  --c-soft: #f5f7fa;
  --c-primary: #1F3A5F;
  --c-primary-dark: #15294a;
  --c-accent: #2E5C8A;
  --c-accent-light: #4a7fb4;
  --c-warn: #c47918;
  --c-success: #2e7d57;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(13, 27, 42, 0.06), 0 1px 3px rgba(13, 27, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(13, 27, 42, 0.08), 0 2px 4px rgba(13, 27, 42, 0.05);
  --shadow-lg: 0 12px 32px rgba(13, 27, 42, 0.12), 0 4px 8px rgba(13, 27, 42, 0.06);
  --container: 1180px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Consolas, Monaco, "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--c-accent); text-decoration: none; }
a:hover { color: var(--c-primary); text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  color: var(--c-ink);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.15; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); line-height: 1.2; }
h3 { font-size: 1.25rem; line-height: 1.3; }

p { margin: 0 0 1em; }

/* ---------------- Layout ---------------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 80px 0; }
section.tight { padding: 48px 0; }

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-header .eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 12px;
}
.section-header p {
  color: var(--c-muted);
  font-size: 1.08rem;
}

/* ---------------- Top nav ---------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--c-line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-ink);
  text-decoration: none;
}
.brand:hover { text-decoration: none; color: var(--c-ink); }
.brand-mark {
  width: 30px;
  height: 30px;
  background: var(--c-primary);
  border-radius: 6px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: -0.04em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--c-text);
  font-weight: 500;
  font-size: 0.96rem;
}
.nav-links a:hover { color: var(--c-accent); text-decoration: none; }
.nav-links a.is-active { color: var(--c-accent); }

/* When a .btn lives inside the nav, button styles must win over .nav-links a */
.nav-links a.btn-primary,
.nav-links a.btn-primary:hover { color: #fff; }
.nav-links a.btn-secondary { color: var(--c-primary); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--c-line);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-text);
  margin: 4px 0;
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--c-line);
    gap: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 10px 4px;
    border-bottom: 1px solid var(--c-line);
  }
  .nav-toggle { display: inline-block; }
}

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, box-shadow 0.15s ease, border 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.2;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn-primary,
a.btn-primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover,
a.btn-primary:hover { background: var(--c-primary-dark); color: #fff; box-shadow: var(--shadow-md); }

.btn-secondary {
  background: #fff;
  color: var(--c-primary);
  border: 1px solid var(--c-line);
}
.btn-secondary:hover { border-color: var(--c-primary); color: var(--c-primary); }

.btn-ghost {
  background: transparent;
  color: var(--c-primary);
}
.btn-ghost:hover { background: var(--c-soft); color: var(--c-primary); }

.btn-lg { padding: 15px 28px; font-size: 1.02rem; }

/* ---------------- Hero ---------------- */

.hero {
  position: relative;
  padding: 96px 0 88px;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(46, 92, 138, 0.12), transparent 60%),
    radial-gradient(800px 400px at 0% 110%, rgba(31, 58, 95, 0.08), transparent 60%),
    linear-gradient(180deg, #fff 0%, #f8fafc 100%);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero h1 {
  margin-bottom: 18px;
  color: var(--c-ink);
}
.hero .lede {
  font-size: 1.2rem;
  color: var(--c-muted);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero .cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.hero .trust {
  font-size: 0.92rem;
  color: var(--c-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero .trust strong { color: var(--c-ink); font-weight: 600; }

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.hero-visual .placeholder-label {
  position: absolute;
  bottom: 14px;
  left: 14px;
  background: rgba(13, 27, 42, 0.78);
  color: #fff;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
}

/* SVG nesting illustration */
.nest-svg { width: 100%; height: 100%; display: block; background: #fafbfd; }

@media (max-width: 860px) {
  .hero { padding: 56px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
}

/* ---------------- Feature grid ---------------- */

.features {
  background: var(--c-bg);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.feature:hover {
  border-color: var(--c-accent-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(46, 92, 138, 0.1);
  color: var(--c-accent);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 { margin-bottom: 8px; font-size: 1.12rem; }
.feature p { color: var(--c-muted); font-size: 0.96rem; margin: 0; }

@media (max-width: 860px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ---------------- Alt section ---------------- */

.alt {
  background: var(--c-soft);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split.flip > :first-child { order: 2; }
.split img, .split .visual-placeholder {
  width: 100%;
  border-radius: var(--radius-lg);
}
.visual-placeholder {
  aspect-ratio: 16 / 11;
  background: #fff;
  border: 1px dashed #c9d2dd;
  display: grid;
  place-items: center;
  color: var(--c-muted);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  text-align: center;
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.split h2 { margin-bottom: 14px; }
.split p { color: var(--c-muted); font-size: 1.04rem; }

.bullet-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}
.bullet-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 6px 0;
  color: var(--c-text);
  font-size: 0.98rem;
}
.bullet-list li::before {
  content: "";
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--c-accent);
  margin-top: 10px;
}

@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split.flip > :first-child { order: 0; }
}

/* ---------------- Pricing ---------------- */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 880px;
  margin: 0 auto;
}
.plan {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
}
.plan.featured {
  border: 2px solid var(--c-primary);
  box-shadow: var(--shadow-lg);
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-primary);
  color: #fff;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.plan h3 { font-size: 1.4rem; margin-bottom: 6px; }
.plan .plan-sub { color: var(--c-muted); font-size: 0.96rem; margin-bottom: 22px; }
.plan .price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 4px;
}
.plan .price .amount { font-size: 2.6rem; font-weight: 700; color: var(--c-ink); letter-spacing: -0.03em; }
.plan .price .period { color: var(--c-muted); font-size: 0.96rem; }
.plan .price-note { color: var(--c-muted); font-size: 0.86rem; margin-bottom: 24px; }

.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  flex: 1;
}
.plan-features li {
  padding: 9px 0;
  border-bottom: 1px solid var(--c-line);
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.96rem;
}
.plan-features li:last-child { border-bottom: none; }
.plan-features li::before {
  content: "";
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  background: rgba(46, 92, 138, 0.1);
  color: var(--c-accent);
  border-radius: 999px;
  margin-top: 2px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M3.5 8.5l3 3 6-7' fill='none' stroke='%232E5C8A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
}

@media (max-width: 720px) {
  .pricing-grid { grid-template-columns: 1fr; }
}

/* ---------------- Gallery ---------------- */

.gallery-toolbar {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.gallery-toolbar button {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--c-text);
  cursor: pointer;
  transition: all 0.15s ease;
}
.gallery-toolbar button:hover { border-color: var(--c-accent); color: var(--c-accent); }
.gallery-toolbar button.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--c-line);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}
.gallery-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.gallery-thumb {
  aspect-ratio: 4 / 3;
  background: repeating-linear-gradient(
    45deg,
    #f5f7fa,
    #f5f7fa 14px,
    #eef1f6 14px,
    #eef1f6 28px
  );
  display: grid;
  place-items: center;
  color: #8392a8;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  position: relative;
  border-bottom: 1px solid var(--c-line);
}
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumb .placeholder-tag {
  background: rgba(13, 27, 42, 0.8);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.74rem;
  position: absolute;
  bottom: 10px;
  left: 10px;
}
.gallery-caption {
  padding: 14px 16px 16px;
}
.gallery-caption h4 {
  margin: 0 0 4px;
  font-size: 1rem;
  color: var(--c-ink);
  font-weight: 600;
}
.gallery-caption p {
  margin: 0;
  color: var(--c-muted);
  font-size: 0.88rem;
}

@media (max-width: 860px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .gallery-grid { grid-template-columns: 1fr; } }

/* Any image marked .zoomable opens the lightbox on click */
img.zoomable {
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
img.zoomable:hover {
  transform: scale(1.005);
  box-shadow: var(--shadow-lg);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(13, 27, 42, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 32px;
}
.lightbox.open { display: flex; }
.lightbox-content {
  max-width: 1100px;
  width: 100%;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}
.lightbox-image {
  flex: 1;
  background: var(--c-soft);
  display: grid;
  place-items: center;
  min-height: 320px;
  padding: 30px;
  color: var(--c-muted);
  font-family: var(--font-mono);
}
.lightbox-image img { max-height: 60vh; }
.lightbox-meta {
  padding: 20px 28px;
  border-top: 1px solid var(--c-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.lightbox-meta h3 { margin: 0 0 4px; }
.lightbox-meta p { margin: 0; color: var(--c-muted); font-size: 0.92rem; }
.lightbox-close {
  background: transparent;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  width: 36px;
  height: 36px;
  font-size: 1.2rem;
  cursor: pointer;
}

/* ---------------- Page header ---------------- */

.page-header {
  padding: 88px 0 56px;
  background:
    radial-gradient(800px 400px at 10% -20%, rgba(46, 92, 138, 0.12), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #f5f7fa 100%);
  text-align: center;
  border-bottom: 1px solid var(--c-line);
}
.page-header .eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 12px;
}
.page-header h1 { margin-bottom: 16px; }
.page-header p {
  max-width: 680px;
  margin: 0 auto;
  color: var(--c-muted);
  font-size: 1.12rem;
}

/* ---------------- FAQ ---------------- */

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--c-line);
}
.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 22px 0;
  font-size: 1.06rem;
  font-weight: 600;
  color: var(--c-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-q::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--c-muted);
  transition: transform 0.2s ease;
  font-weight: 400;
}
.faq-item.open .faq-q::after { content: "−"; }
.faq-a {
  display: none;
  padding: 0 0 22px;
  color: var(--c-muted);
  font-size: 1rem;
  max-width: 90%;
}
.faq-item.open .faq-a { display: block; }

/* ---------------- CTA strip ---------------- */

.cta-strip {
  background: linear-gradient(120deg, var(--c-primary) 0%, var(--c-accent) 100%);
  color: #fff;
  padding: 64px 0;
}
.cta-strip h2 { color: #fff; margin-bottom: 10px; }
.cta-strip p { color: rgba(255, 255, 255, 0.88); max-width: 580px; margin: 0 0 24px; }
.cta-strip .cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-strip .btn-primary { background: #fff; color: var(--c-primary); }
.cta-strip .btn-primary:hover { background: var(--c-soft); color: var(--c-primary); }
.cta-strip .btn-secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.cta-strip .btn-secondary:hover { background: rgba(255,255,255,0.1); color: #fff; border-color: #fff; }

.cta-strip-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}
@media (max-width: 720px) {
  .cta-strip-inner { grid-template-columns: 1fr; }
}

/* ---------------- Footer ---------------- */

footer {
  background: #0d1b2a;
  color: #c1ccdb;
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
.footer-grid h4 {
  color: #fff;
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: #c1ccdb; font-size: 0.94rem; }
.footer-grid a:hover { color: #fff; text-decoration: none; }
.footer-brand p { color: #91a1b5; font-size: 0.94rem; margin: 0; max-width: 280px; }
.footer-brand .brand { color: #fff; margin-bottom: 14px; }
.footer-brand .brand-mark { background: var(--c-accent); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #1e2f44;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  color: #91a1b5;
  font-size: 0.86rem;
}

@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------------- Contact / forms ---------------- */

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
}
.contact-info h3 { margin-top: 28px; margin-bottom: 4px; font-size: 1.04rem; }
.contact-info p { color: var(--c-muted); margin-bottom: 0; }
.contact-info a { color: var(--c-accent); }

.form-grid { display: grid; gap: 16px; }
.form-grid label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-ink);
  display: block;
  margin-bottom: 6px;
}
.form-grid input,
.form-grid textarea,
.form-grid select {
  width: 100%;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 11px 14px;
  font: inherit;
  background: #fff;
  color: var(--c-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-grid input:focus,
.form-grid textarea:focus,
.form-grid select:focus {
  border-color: var(--c-accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(46, 92, 138, 0.16);
}
.form-grid textarea { min-height: 140px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-note {
  background: var(--c-soft);
  border: 1px solid var(--c-line);
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  color: var(--c-muted);
}

@media (max-width: 860px) {
  .contact-wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ---------------- Download page ---------------- */

.download-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  margin-bottom: 18px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.download-card:hover { border-color: var(--c-accent-light); box-shadow: var(--shadow-md); }
.download-card .os-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: rgba(46, 92, 138, 0.1);
  color: var(--c-accent);
  display: grid;
  place-items: center;
}
.download-card .os-icon svg { width: 30px; height: 30px; }
.download-card h3 { margin: 0 0 4px; font-size: 1.12rem; }
.download-card p { margin: 0; color: var(--c-muted); font-size: 0.92rem; }

.sys-req {
  background: var(--c-soft);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-top: 36px;
}
.sys-req h3 { margin-top: 0; }
.sys-req ul { list-style: none; padding: 0; margin: 0; }
.sys-req li {
  display: grid;
  grid-template-columns: 160px 1fr;
  padding: 8px 0;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-text);
  font-size: 0.96rem;
}
.sys-req li:last-child { border-bottom: none; }
.sys-req li strong { color: var(--c-ink); font-weight: 600; }

/* ---------------- About ---------------- */

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.value-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.value-card h3 { margin-top: 0; font-size: 1.1rem; }
.value-card p { margin: 0; color: var(--c-muted); }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

/* ---------------- Utilities ---------------- */

.text-center { text-align: center; }
.mb-0 { margin-bottom: 0 !important; }
.mt-lg { margin-top: 40px; }
.no-underline { text-decoration: none; }
.hide-mobile { }
@media (max-width: 860px) { .hide-mobile { display: none; } }