/* ============================================================
   AI Article Engine — main stylesheet
   Palette: "Redline on gunmetal paper"
   ignition red  #d92617   carbon #1b1d21   gunmetal #55606b
   paper #f6f5f2   panel #ffffff   tach amber #f2a91e
   Type: Chakra Petch (display) / Inter (body) / Red Hat Mono (labels)
   ============================================================ */

:root {
  --red: #d92617;
  --red-dark: #b01c10;
  --red-soft: #fbe9e7;
  --amber: #f2a91e;
  --amber-soft: #fdf3dd;
  --carbon: #1b1d21;
  --carbon-2: #24272d;
  --gunmetal: #55606b;
  --steel: #8a949e;
  --line: #e3e1dc;
  --paper: #f6f5f2;
  --panel: #ffffff;
  --ink: #16181b;
  --ok: #1e8e4e;
  --ok-soft: #e2f4e9;

  --font-display: "Chakra Petch", "Inter", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Red Hat Mono", "Menlo", monospace;

  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 1px 2px rgba(22, 24, 27, 0.06), 0 8px 24px rgba(22, 24, 27, 0.07);
  --shadow-lg: 0 4px 10px rgba(22, 24, 27, 0.08), 0 24px 60px rgba(22, 24, 27, 0.14);
  --wrap: 1180px;
  --header-h: 72px;
}

/* Dark theme tokens */
[data-theme="dark"] {
  --paper: #131519;
  --panel: #1c1f24;
  --ink: #eef0f2;
  --carbon: #0d0f12;
  --carbon-2: #16181d;
  --gunmetal: #a3adb8;
  --steel: #77818c;
  --line: #2b2f36;
  --red-soft: #3a1613;
  --amber-soft: #33270f;
  --ok-soft: #123322;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 4px 10px rgba(0, 0, 0, 0.5), 0 24px 60px rgba(0, 0, 0, 0.5);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1em; }
:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
  border-radius: 4px;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--carbon);
  color: #fff;
  padding: 10px 18px;
  z-index: 200;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--tight { padding: 56px 0; }
.section--carbon { background: var(--carbon); color: #eef0f2; }
.section--panel { background: var(--panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--red);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--red);
}
.section--carbon .eyebrow { color: var(--amber); }
.section--carbon .eyebrow::before { background: var(--amber); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head p { color: var(--gunmetal); font-size: 1.06rem; }
.section--carbon .section-head p { color: #b9c0c8; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 6px 18px rgba(217, 38, 23, 0.28);
}
.btn--primary:hover { background: var(--red-dark); }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--gunmetal); }
.btn--light { background: #fff; color: var(--carbon); }
.btn--light:hover { background: #f1f1ee; }
.btn--sm { padding: 9px 18px; font-size: 0.86rem; }
.btn--block { width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ---------- Announcement bar ---------- */
.announce {
  background: var(--carbon);
  color: #dfe3e8;
  font-size: 0.84rem;
  text-align: center;
  padding: 9px 16px;
}
.announce a { color: var(--amber); font-weight: 600; }
.announce strong { color: #fff; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header-h);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
}
.logo em { font-style: normal; color: var(--red); }

.nav { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
.nav a, .nav-drop > button {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--ink);
  padding: 9px 13px;
  border-radius: 8px;
  background: none;
  border: 0;
  font-family: var(--font-body);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav a:hover, .nav-drop > button:hover { background: color-mix(in srgb, var(--gunmetal) 10%, transparent); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--red); font-weight: 600; }
.nav-drop { position: relative; }
.nav-drop > button svg { transition: transform 0.15s ease; }
.nav-drop.open > button svg { transform: rotate(180deg); }
.drop-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  display: none;
  z-index: 95;
}
.nav-drop.open .drop-menu { display: block; }
.drop-menu a {
  display: block;
  padding: 9px 12px;
  border-radius: 7px;
  font-size: 0.9rem;
}
.drop-menu a span {
  display: block;
  font-size: 0.76rem;
  color: var(--steel);
  font-weight: 400;
}
.header-cta { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle:hover { border-color: var(--gunmetal); }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.nav-burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-burger span {
  width: 18px; height: 2px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 980px) {
  .nav {
    position: fixed;
    inset: calc(var(--header-h)) 0 auto 0;
    top: var(--header-h);
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 14px 20px 22px;
    gap: 2px;
    display: none;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
  }
  .nav.open { display: flex; }
  .drop-menu {
    position: static;
    box-shadow: none;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    margin: 4px 0 4px 12px;
    padding: 0 0 0 6px;
  }
  .nav-burger { display: inline-flex; }
  .header-cta .btn--ghost { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 88px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 31px, var(--line) 32px) 0 0 / 100% 32px,
    linear-gradient(90deg, transparent 31px, var(--line) 32px) 0 0 / 32px 100%;
  opacity: 0.35;
  mask-image: radial-gradient(720px 460px at 78% 30%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(720px 460px at 78% 30%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 56px;
  align-items: center;
  position: relative;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--gunmetal);
  margin-bottom: 20px;
}
.hero-badge .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ok);
  animation: pulse 2s infinite;
}
@keyframes pulse { 50% { opacity: 0.35; } }
.hero h1 em {
  font-style: normal;
  color: var(--red);
  position: relative;
  white-space: nowrap;
}
.hero-sub {
  font-size: 1.13rem;
  color: var(--gunmetal);
  max-width: 520px;
  margin-bottom: 28px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.hero-note {
  font-size: 0.84rem;
  color: var(--steel);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.hero-note span { display: inline-flex; align-items: center; gap: 6px; }
.hero-note svg { color: var(--ok); }

@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
}

/* ---------- Dyno panel (signature) ---------- */
.dyno {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.dyno-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--carbon);
  color: #cfd5db;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.dyno-top .lights { display: flex; gap: 6px; }
.dyno-top .lights i {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #3a3f46;
}
.dyno-top .lights i.on { background: var(--amber); }
.dyno-body { padding: 22px; }
.dyno-row { display: flex; gap: 10px; }
.dyno-row .field { flex: 1; }
.dyno .gauge-wrap {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}
.gauge { width: 150px; }
.gauge-readout { text-align: center; margin-top: -8px; }
.gauge-readout strong {
  font-family: var(--font-display);
  font-size: 1.5rem;
  display: block;
  line-height: 1;
}
.gauge-readout span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  color: var(--steel);
  text-transform: uppercase;
}
.dyno-spec { font-size: 0.86rem; min-width: 0; }
.dyno-spec dt {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
  margin-top: 10px;
}
.dyno-spec dd { margin: 2px 0 0; font-weight: 500; overflow-wrap: anywhere; }
.dyno-spec dl { margin: 0; }
@media (max-width: 460px) {
  .dyno .gauge-wrap { grid-template-columns: 1fr; justify-items: center; }
  .dyno-spec { width: 100%; }
}

/* ---------- Spec strip / stats ---------- */
.spec-strip { background: var(--carbon); color: #eef0f2; }
.spec-strip .wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: #2c3037;
  border-left: 1px solid #2c3037;
  border-right: 1px solid #2c3037;
}
.spec-cell {
  background: var(--carbon);
  padding: 30px 26px;
}
.spec-cell b {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 700;
  display: block;
  line-height: 1.1;
}
.spec-cell b em { font-style: normal; color: var(--amber); font-size: 1.1rem; }
.spec-cell span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #98a1ab;
}
@media (max-width: 900px) {
  .spec-strip .wrap { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .spec-strip .wrap { grid-template-columns: 1fr; }
}

/* ---------- Trusted-by ---------- */
.trust { padding: 44px 0; border-bottom: 1px solid var(--line); }
.trust p {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 22px;
}
.trust-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 40px;
}
.trust-logos span {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--gunmetal);
  opacity: 0.75;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ---------- Cylinder feature grid ---------- */
.cyl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cyl {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  position: relative;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.cyl:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--red) 35%, var(--line));
}
.cyl-tag {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  color: var(--steel);
  position: absolute;
  top: 20px;
  right: 22px;
}
.cyl-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--red-soft);
  color: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.cyl h3 { font-size: 1.08rem; }
.cyl p { color: var(--gunmetal); font-size: 0.93rem; margin: 0; }
@media (max-width: 980px) { .cyl-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cyl-grid { grid-template-columns: 1fr; } }

/* ---------- Four-stroke how-it-works ---------- */
.stroke-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: stroke;
}
.stroke {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  position: relative;
}
.stroke-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red);
  display: block;
  margin-bottom: 12px;
}
.stroke-bar {
  height: 6px;
  border-radius: 3px;
  background: var(--line);
  overflow: hidden;
  margin-bottom: 18px;
}
.stroke-bar i { display: block; height: 100%; background: var(--red); }
.stroke:nth-child(1) .stroke-bar i { width: 25%; }
.stroke:nth-child(2) .stroke-bar i { width: 50%; }
.stroke:nth-child(3) .stroke-bar i { width: 75%; }
.stroke:nth-child(4) .stroke-bar i { width: 100%; background: var(--ok); }
.stroke h3 { font-size: 1.05rem; }
.stroke p { font-size: 0.9rem; color: var(--gunmetal); margin: 0; }
@media (max-width: 980px) { .stroke-rail { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .stroke-rail { grid-template-columns: 1fr; } }

/* ---------- Gear tabs (content types) ---------- */
.gear-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}
.gear-tabs button {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.86rem;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}
.gear-tabs button[aria-selected="true"] {
  background: var(--carbon);
  color: #fff;
  border-color: var(--carbon);
}
.gear-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}
.gear-panel[hidden] { display: none; }
.gear-panel h3 { font-size: 1.3rem; }
.gear-panel p { color: var(--gunmetal); }
.gear-panel ul { margin: 0; padding: 0; list-style: none; }
.gear-panel ul li {
  padding: 7px 0 7px 26px;
  position: relative;
  font-size: 0.93rem;
}
.gear-panel ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 13px;
  width: 14px; height: 8px;
  border-left: 2.5px solid var(--ok);
  border-bottom: 2.5px solid var(--ok);
  transform: rotate(-45deg) translateY(-2px);
}
.gear-sample {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--gunmetal);
  white-space: pre-wrap;
}
@media (max-width: 860px) { .gear-panel { grid-template-columns: 1fr; } }

/* ---------- ECU dashboard mockup ---------- */
.ecu {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-width: 960px;
  margin: 0 auto;
}
.ecu-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.ecu-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.ecu-bar i:nth-child(1) { background: #f26b5e; }
.ecu-bar i:nth-child(2) { background: var(--amber); }
.ecu-bar i:nth-child(3) { background: #4fbf78; }
.ecu-bar span {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--steel);
}
.ecu-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  min-height: 340px;
}
.ecu-side {
  border-right: 1px solid var(--line);
  padding: 18px 0;
  background: var(--paper);
}
.ecu-side a {
  display: block;
  padding: 9px 20px;
  font-size: 0.85rem;
  color: var(--gunmetal);
}
.ecu-side a.active {
  color: var(--red);
  font-weight: 600;
  border-left: 3px solid var(--red);
  background: color-mix(in srgb, var(--red) 6%, transparent);
}
.ecu-main { padding: 24px; }
.ecu-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
.ecu-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.ecu-card b { font-family: var(--font-display); font-size: 1.3rem; display: block; }
.ecu-card span { font-size: 0.74rem; color: var(--steel); }
.ecu-rows { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.ecu-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}
.ecu-row:last-child { border-bottom: 0; }
.ecu-row .pill {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--ok-soft);
  color: var(--ok);
  white-space: nowrap;
}
.ecu-row .pill--draft { background: var(--amber-soft); color: #a06a05; }
@media (max-width: 760px) {
  .ecu-grid { grid-template-columns: 1fr; }
  .ecu-side { display: flex; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 8px; }
  .ecu-side a.active { border-left: 0; border-bottom: 2px solid var(--red); }
  .ecu-cards { grid-template-columns: 1fr; }
}

/* ---------- Use-case cards ---------- */
.use-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.use-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  background: var(--panel);
}
.use-card h3 { font-size: 1.05rem; display: flex; align-items: center; gap: 10px; }
.use-card h3 svg { color: var(--red); flex: 0 0 auto; }
.use-card p { font-size: 0.92rem; color: var(--gunmetal); margin: 0; }
@media (max-width: 900px) { .use-grid { grid-template-columns: 1fr; } }

/* ---------- Redline band (SEO workflow) ---------- */
.redline-band { position: relative; }
.redline-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.redline-list { list-style: none; margin: 0; padding: 0; }
.redline-list li {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid #2c3037;
  font-size: 0.95rem;
  color: #d6dbe0;
}
.redline-list li:last-child { border-bottom: 0; }
.redline-list svg { color: var(--amber); flex: 0 0 auto; margin-top: 3px; }
.torque-chart {
  background: var(--carbon-2);
  border: 1px solid #2c3037;
  border-radius: var(--radius-lg);
  padding: 24px;
}
.torque-chart figcaption {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #98a1ab;
  margin-top: 14px;
  text-align: center;
}
@media (max-width: 900px) { .redline-cols { grid-template-columns: 1fr; } }

/* ---------- Testimonials ---------- */
.tst-slider { position: relative; }
.tst-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 10px;
  scrollbar-width: thin;
}
.tst {
  flex: 0 0 min(420px, 88%);
  scroll-snap-align: start;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.tst blockquote { margin: 0 0 20px; font-size: 0.98rem; color: var(--ink); }
.tst blockquote::before { content: "\201C"; color: var(--red); font-family: var(--font-display); font-size: 1.6rem; line-height: 0; margin-right: 4px; }
.tst-person { display: flex; align-items: center; gap: 12px; }
.tst-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--carbon);
  color: var(--amber);
  font-family: var(--font-display);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}
.tst-person b { display: block; font-size: 0.9rem; }
.tst-person span { font-size: 0.78rem; color: var(--steel); }
.tst-stars { color: var(--amber); letter-spacing: 2px; font-size: 0.85rem; margin-bottom: 10px; }
.tst-nav { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; }
.tst-nav button {
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.tst-nav button:hover { border-color: var(--gunmetal); }

/* ---------- Pricing ---------- */
.bill-toggle {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin: 0 auto 44px;
  font-size: 0.92rem;
  font-weight: 500;
}
.bill-toggle .save {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  background: var(--ok-soft);
  color: var(--ok);
  padding: 4px 10px;
  border-radius: 999px;
}
.switch {
  width: 52px; height: 28px;
  border-radius: 999px;
  background: var(--line);
  border: 0;
  position: relative;
  cursor: pointer;
  transition: background 0.15s ease;
}
.switch[aria-checked="true"] { background: var(--red); }
.switch i {
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.18s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25);
}
.switch[aria-checked="true"] i { transform: translateX(24px); }

.price-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}
.plan {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.plan--hot {
  border-color: var(--red);
  box-shadow: 0 12px 40px rgba(217, 38, 23, 0.14);
}
.plan-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 999px;
  white-space: nowrap;
}
.plan h3 { font-size: 1.05rem; }
.plan-desc { font-size: 0.85rem; color: var(--gunmetal); min-height: 42px; }
.plan-price { margin: 14px 0 4px; }
.plan-price b { font-family: var(--font-display); font-size: 2.3rem; font-weight: 700; }
.plan-price span { color: var(--steel); font-size: 0.88rem; }
.plan-bill-note { font-size: 0.76rem; color: var(--steel); min-height: 20px; margin-bottom: 16px; }
.plan ul { list-style: none; margin: 0 0 26px; padding: 0; flex: 1; }
.plan ul li {
  font-size: 0.88rem;
  padding: 7px 0 7px 26px;
  position: relative;
}
.plan ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 14px;
  width: 13px; height: 7px;
  border-left: 2.5px solid var(--ok);
  border-bottom: 2.5px solid var(--ok);
  transform: rotate(-45deg);
}
.plan ul li.mut { color: var(--steel); }
.plan ul li.mut::before { border-color: var(--steel); }
@media (max-width: 1080px) { .price-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .price-grid { grid-template-columns: 1fr; } }

/* ---------- Comparison table ---------- */
.cmp-scroll { overflow-x: auto; }
.cmp {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cmp th, .cmp td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 0.9rem;
}
.cmp thead th {
  font-family: var(--font-display);
  font-size: 0.9rem;
  background: var(--paper);
}
.cmp thead th.hl { color: var(--red); }
.cmp tbody tr:last-child td { border-bottom: 0; }
.cmp td.hl { font-weight: 600; }
.cmp .no { color: var(--steel); }
.cmp .yes { color: var(--ok); font-weight: 600; }

/* ---------- FAQ accordion ---------- */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: none;
  border: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}
.faq-q svg { flex: 0 0 auto; transition: transform 0.2s ease; color: var(--red); }
.faq-q[aria-expanded="true"] svg { transform: rotate(45deg); }
.faq-a { padding: 0 20px 18px; color: var(--gunmetal); font-size: 0.93rem; }
.faq-a[hidden] { display: none; }

/* ---------- CTA final ---------- */
.cta-final {
  background: linear-gradient(120deg, var(--red) 0%, var(--red-dark) 70%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-final::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 31px, rgba(255,255,255,0.08) 32px) 0 0 / 100% 32px,
    linear-gradient(90deg, transparent 31px, rgba(255,255,255,0.08) 32px) 0 0 / 32px 100%;
  pointer-events: none;
}
.cta-final h2 { color: #fff; }
.cta-final p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 26px; }
.cta-final .btn { position: relative; z-index: 1; }
.cta-final small { display: block; margin-top: 14px; color: rgba(255,255,255,0.75); font-size: 0.8rem; position: relative; z-index: 1; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--carbon);
  color: #b9c0c8;
  padding: 64px 0 28px;
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 36px;
  margin-bottom: 44px;
}
.site-footer .logo { color: #fff; margin-bottom: 14px; }
.footer-about p { font-size: 0.86rem; color: #98a1ab; max-width: 300px; }
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid #2c3037;
  color: #b9c0c8;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.footer-social a:hover { color: #fff; border-color: #4a505a; text-decoration: none; }
.footer-col h4 {
  color: #fff;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col a { display: block; color: #b9c0c8; padding: 5px 0; font-size: 0.87rem; }
.footer-col a:hover { color: #fff; text-decoration: none; }
.footer-bottom {
  border-top: 1px solid #2c3037;
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  color: #848d97;
}
.footer-bottom a { color: #b9c0c8; }
@media (max-width: 980px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Forms ---------- */
.field { margin-bottom: 16px; text-align: left; }
.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.field .hint { font-weight: 400; color: var(--steel); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.94rem;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--red) 60%, transparent);
  outline-offset: 0;
  border-color: var(--red);
}
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--red); }
.field-error {
  display: none;
  font-size: 0.78rem;
  color: var(--red);
  margin-top: 5px;
}
.field.invalid .field-error { display: block; }
.field-range { display: flex; align-items: center; gap: 12px; }
.field-range input[type="range"] { flex: 1; accent-color: var(--red); padding: 0; border: 0; }
.field-range output { font-family: var(--font-mono); font-size: 0.8rem; min-width: 34px; text-align: right; }
.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 46px; }
.pw-toggle {
  position: absolute;
  right: 6px; top: 50%;
  transform: translateY(-50%);
  border: 0;
  background: none;
  color: var(--steel);
  cursor: pointer;
  padding: 8px;
  display: inline-flex;
}
.pw-toggle:hover { color: var(--ink); }
.form-note { font-size: 0.8rem; color: var(--steel); }

/* ---------- Auth pages ---------- */
.auth-shell {
  min-height: calc(100vh - var(--header-h));
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.auth-side {
  background: var(--carbon);
  color: #dfe3e8;
  padding: 60px 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.auth-side h2 { color: #fff; }
.auth-side .redline-list li { font-size: 0.92rem; }
.auth-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 24px;
}
.auth-card { width: 100%; max-width: 420px; }
.auth-card h1 { font-size: 1.7rem; }
.auth-card .sub { color: var(--gunmetal); font-size: 0.94rem; margin-bottom: 26px; }
.auth-alt {
  text-align: center;
  font-size: 0.88rem;
  margin-top: 22px;
  color: var(--gunmetal);
}
@media (max-width: 880px) {
  .auth-shell { grid-template-columns: 1fr; }
  .auth-side { display: none; }
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); }
.page-hero p { color: var(--gunmetal); max-width: 640px; font-size: 1.06rem; margin: 0; }

/* ---------- Prose (legal/blog) ---------- */
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 { font-size: 1.4rem; margin-top: 2.2em; }
.prose h3 { font-size: 1.1rem; margin-top: 1.8em; }
.prose p, .prose li { color: color-mix(in srgb, var(--ink) 82%, var(--gunmetal)); }
.prose ul { padding-left: 22px; }
.prose .updated {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}
.prose blockquote {
  border-left: 3px solid var(--red);
  margin: 1.6em 0;
  padding: 4px 0 4px 20px;
  color: var(--gunmetal);
  font-style: italic;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: color-mix(in srgb, var(--gunmetal) 12%, transparent);
  padding: 2px 6px;
  border-radius: 5px;
}
.prose pre {
  background: var(--carbon);
  color: #dfe3e8;
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 0.82rem;
}
.prose pre code { background: none; padding: 0; }

/* ---------- Blog ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.post-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  display: flex;
  flex-direction: column;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.post-thumb {
  height: 160px;
  display: flex;
  align-items: flex-end;
  padding: 16px;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.post-thumb--a { background: linear-gradient(135deg, #d92617, #7d130a); }
.post-thumb--b { background: linear-gradient(135deg, #1b1d21, #454b54); }
.post-thumb--c { background: linear-gradient(135deg, #f2a91e, #c07807); }
.post-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.post-body h3 { font-size: 1.05rem; }
.post-body h3 a { color: var(--ink); }
.post-body p { font-size: 0.88rem; color: var(--gunmetal); flex: 1; }
.post-meta { font-size: 0.76rem; color: var(--steel); display: flex; gap: 10px; }
@media (max-width: 900px) { .blog-grid { grid-template-columns: 1fr; } }

.article-head { max-width: 760px; margin: 0 auto 40px; }
.article-head .post-meta { margin-top: 14px; }
.author-box {
  max-width: 760px;
  margin: 48px auto 0;
  display: flex;
  gap: 18px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.author-box .tst-avatar { width: 56px; height: 56px; flex: 0 0 56px; }
.author-box b { font-family: var(--font-display); }
.author-box p { font-size: 0.88rem; color: var(--gunmetal); margin: 4px 0 0; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.contact-info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  padding: 26px;
  margin-bottom: 18px;
}
.contact-info-card h3 { font-size: 1rem; display: flex; gap: 10px; align-items: center; }
.contact-info-card h3 svg { color: var(--red); }
.contact-info-card p { font-size: 0.9rem; color: var(--gunmetal); margin: 0; }
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- Generator page ---------- */
.gen-layout {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 28px;
  align-items: start;
}
.gen-form, .gen-output {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
}
.gen-output { min-height: 520px; display: flex; flex-direction: column; }
.gen-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}
.gen-counts {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--steel);
}
.gen-result {
  flex: 1;
  overflow-y: auto;
  max-height: 640px;
  font-size: 0.95rem;
}
.gen-result h1 { font-size: 1.6rem; }
.gen-result h2 { font-size: 1.2rem; margin-top: 1.6em; }
.gen-result h3 { font-size: 1rem; margin-top: 1.2em; }
.gen-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--steel);
  gap: 14px;
  padding: 30px;
}
.gen-empty svg { color: var(--line); }
.gen-loading { text-align: center; padding: 60px 20px; }
.gen-loading .gauge { margin: 0 auto 16px; }
.gen-loading p { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; color: var(--gunmetal); }
.gen-error {
  background: var(--red-soft);
  color: var(--red-dark);
  border: 1px solid color-mix(in srgb, var(--red) 30%, transparent);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 0.9rem;
  margin-bottom: 14px;
}
@media (max-width: 980px) { .gen-layout { grid-template-columns: 1fr; } }

/* ---------- Toasts ---------- */
.toast-region {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 160;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: min(360px, calc(100vw - 44px));
}
.toast {
  background: var(--carbon);
  color: #fff;
  border-radius: var(--radius);
  padding: 13px 18px;
  font-size: 0.88rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toast-in 0.25s ease;
}
.toast--ok { border-left: 4px solid var(--ok); }
.toast--err { border-left: 4px solid var(--red); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(13, 15, 18, 0.6);
  z-index: 150;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--panel);
  border-radius: var(--radius-lg);
  max-width: 460px;
  width: 100%;
  padding: 30px;
  position: relative;
  box-shadow: var(--shadow-lg);
  max-height: 88vh;
  overflow-y: auto;
}
.modal h3 { font-size: 1.2rem; padding-right: 34px; }
.modal p { color: var(--gunmetal); font-size: 0.92rem; }
.modal-close {
  position: absolute;
  top: 14px; right: 14px;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}
.modal-summary {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin: 16px 0;
  font-size: 0.9rem;
}
.modal-summary div { display: flex; justify-content: space-between; padding: 4px 0; }
.modal-summary b { font-family: var(--font-display); }

/* ---------- Cookie banner ---------- */
.cookie-banner {
  position: fixed;
  bottom: 18px;
  left: 18px;
  right: 18px;
  max-width: 560px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 20px 22px;
  z-index: 140;
  display: none;
}
.cookie-banner.show { display: block; }
.cookie-banner p { font-size: 0.86rem; color: var(--gunmetal); margin-bottom: 14px; }
.cookie-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- Back to top ---------- */
.back-top {
  position: fixed;
  bottom: 22px;
  left: 22px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--carbon);
  color: #fff;
  border: 0;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 120;
  box-shadow: var(--shadow-lg);
}
.back-top.show { display: inline-flex; }
.back-top:hover { background: var(--red); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 404 ---------- */
.err-shell {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 24px;
}
.err-code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  color: var(--red);
  line-height: 1;
}
.err-shell p { color: var(--gunmetal); max-width: 420px; margin: 12px auto 26px; }

/* ---------- Values / about ---------- */
.about-story {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.founder-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  text-align: center;
}
.founder-card .tst-avatar {
  width: 84px; height: 84px;
  margin: 0 auto 16px;
  font-size: 1.5rem;
}
.founder-card b { font-family: var(--font-display); font-size: 1.15rem; display: block; }
.founder-card span { font-size: 0.82rem; color: var(--steel); display: block; margin-bottom: 12px; }
.founder-card p { font-size: 0.88rem; color: var(--gunmetal); margin: 0; }
@media (max-width: 880px) { .about-story { grid-template-columns: 1fr; } }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .value-grid { grid-template-columns: 1fr; } }

/* Small utility */
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-lg { margin-bottom: 44px; }