/* ============================================================
   VouchRail — landing
   Dark, hash-chain inspired. Glass cards, mesh gradient, mono accents.
   ============================================================ */

:root {
  --bg:            #05060a;
  --bg-2:          #0a0d14;
  --surface:       rgba(255, 255, 255, 0.04);
  --surface-2:     rgba(255, 255, 255, 0.06);
  --border:        rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text:          #e8ecf3;
  --text-dim:      #8a92a3;
  --text-dimmer:   #5a6477;
  --teal:          #5eead4;
  --violet:        #a78bfa;
  --orange:        #f97316;
  --rose:          #fb7185;
  --grad:          linear-gradient(135deg, #5eead4 0%, #a78bfa 60%, #f0abfc 100%);
  --grad-soft:     linear-gradient(135deg, rgba(94,234,212,0.16), rgba(167,139,250,0.16));
  --shadow-card:   0 1px 0 rgba(255,255,255,0.04) inset, 0 16px 32px -16px rgba(0,0,0,0.6);
  --shadow-elev:   0 24px 80px -32px rgba(94, 234, 212, 0.25), 0 24px 80px -32px rgba(167, 139, 250, 0.25);
  --radius:        14px;
  --radius-lg:     22px;
  --maxw:          1180px;
}

* { box-sizing: border-box; }
*::selection { background: rgba(94, 234, 212, 0.25); color: var(--text); }

html { scroll-behavior: smooth; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

code, pre { font-family: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace; }

img, svg { display: block; max-width: 100%; }

h1, h2, h3 { margin: 0; line-height: 1.1; letter-spacing: -0.02em; font-weight: 700; }

/* ============== background layers ============== */

.bg-mesh {
  position: fixed; inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 10% 0%,  rgba(94, 234, 212, 0.18), transparent 60%),
    radial-gradient(ellipse 50% 40% at 90% 10%, rgba(167, 139, 250, 0.18), transparent 60%),
    radial-gradient(ellipse 70% 60% at 50% 100%, rgba(249, 115, 22, 0.08), transparent 70%);
  z-index: -2;
  filter: blur(2px);
}

.bg-grid {
  position: fixed; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 30%, transparent 80%);
  z-index: -1;
}

/* ============== nav ============== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  background: linear-gradient(180deg, rgba(5,6,10,0.85), rgba(5,6,10,0.55));
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-mark { width: 28px; height: 28px; }
.brand-name { font-size: 17px; }
.brand-img {
  height: 44px;
  width: auto;
  max-height: 44px;
  max-width: 220px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(94, 234, 212, 0.22));
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-dim);
}
.nav-links a {
  padding: 8px 12px;
  border-radius: 8px;
  transition: color .18s ease, background .18s ease;
}
.nav-links a:hover { color: var(--text); background: var(--surface); }
.nav-cta {
  background: var(--grad-soft);
  color: var(--text) !important;
  border: 1px solid var(--border);
}
.nav-cta:hover { border-color: var(--border-strong); }

.nav-toggle {
  display: none;
  width: 38px; height: 38px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 16px; height: 1.5px;
  background: var(--text);
  margin: 3px auto;
  transition: transform .2s, opacity .2s;
}

/* ============== layout ============== */

main { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; position: relative; }
.section-head { max-width: 780px; margin: 0 auto 56px; text-align: center; }
.kicker {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 18px;
  padding: 6px 10px;
  border: 1px solid rgba(94, 234, 212, 0.25);
  border-radius: 999px;
  background: rgba(94, 234, 212, 0.06);
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 44px);
  margin-bottom: 18px;
}
.section-head p {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============== hero ============== */

.hero {
  padding: 84px 0 64px;
  position: relative;
}
.hero-inner { max-width: 980px; margin: 0 auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 28px;
}
.eyebrow strong { color: var(--text); font-weight: 600; }
.pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.6); }
  70%  { box-shadow: 0 0 0 14px rgba(94, 234, 212, 0); }
  100% { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0); }
}

.hero-title {
  font-size: clamp(38px, 6.4vw, 78px);
  letter-spacing: -0.035em;
  font-weight: 800;
  margin: 0 0 22px;
}
.hero-sub {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 auto 36px;
}
.hero-sub em { font-style: normal; color: var(--text); font-weight: 500; }

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  transition: transform .15s ease, border-color .18s ease, background .18s ease, box-shadow .25s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--grad);
  color: #04060a;
  font-weight: 600;
  box-shadow: 0 12px 30px -12px rgba(94, 234, 212, 0.5), 0 12px 30px -12px rgba(167, 139, 250, 0.5);
}
.btn-primary:hover { box-shadow: 0 18px 40px -12px rgba(94, 234, 212, 0.6), 0 18px 40px -12px rgba(167, 139, 250, 0.6); }
.btn-ghost {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--border-strong); background: var(--surface-2); }
.btn-full { width: 100%; }

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}
.meta-card {
  padding: 18px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: left;
}
.meta-label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}
.meta-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-family: 'JetBrains Mono', monospace;
}
.meta-value .muted { font-size: 14px; color: var(--text-dim); font-weight: 400; margin-left: 4px; }
.meta-foot { font-size: 12px; color: var(--text-dimmer); margin-top: 6px; }

#countdown .meta-value { color: var(--teal); }

.hero-code {
  text-align: left;
  background: linear-gradient(180deg, rgba(10,13,20,0.95), rgba(5,6,10,0.95));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 26px;
  font-size: 13.5px;
  overflow-x: auto;
  box-shadow: var(--shadow-card);
  margin: 0;
}
.hero-code code { color: var(--text); white-space: pre; }

/* code tokens */
.t-c  { color: #6b7689; font-style: italic; }
.t-k  { color: #c084fc; }
.t-v  { color: #5eead4; }
.t-s  { color: #fbbf77; }
.t-p  { color: #93c5fd; }
.t-n  { color: #f0abfc; }
.t-b  { color: #fbbf77; }
.t-fn { color: #5eead4; }

/* ============== problem ============== */

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.problem-card {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  transition: border-color .2s ease, transform .2s ease;
}
.problem-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.problem-card h3 {
  font-size: 16px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.problem-card p { color: var(--text-dim); font-size: 14.5px; margin: 0; }
.problem-card code {
  background: var(--surface-2);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12.5px;
}
.x-mark {
  position: absolute;
  top: 18px; right: 20px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(251, 113, 133, 0.12);
  color: var(--rose);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 18px;
}
.x-mark-fix {
  background: var(--grad-soft);
  color: var(--teal);
}
.problem-card-strong {
  background: linear-gradient(135deg, rgba(94,234,212,0.06), rgba(167,139,250,0.06));
  border-color: rgba(94, 234, 212, 0.3);
  box-shadow: var(--shadow-elev);
}
.problem-card-strong p strong { color: var(--text); }

/* ============== five stack ============== */

.stack-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: stack;
}
.stack-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  align-items: flex-start;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: border-color .25s ease, transform .25s ease, box-shadow .35s ease;
}
.stack-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}
.stack-card:hover { border-color: rgba(94, 234, 212, 0.25); transform: translateY(-2px); box-shadow: var(--shadow-elev); }
.stack-card:hover::before { opacity: 1; }

.stack-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 72px;
  font-weight: 700;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.04em;
  position: relative;
  z-index: 1;
}
.stack-body { position: relative; z-index: 1; }
.stack-body h3 { font-size: 22px; margin-bottom: 10px; }
.stack-body p { color: var(--text-dim); margin: 0 0 14px; }
.stack-body p em { color: var(--text); font-style: normal; font-weight: 500; }
.stack-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.stack-tags span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  padding: 4px 9px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
}

/* ============== architecture ============== */

.arch-wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: flex-start;
}
.arch-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.arch-layer {
  padding: 18px 20px;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
  position: relative;
}
.arch-layer .arch-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.arch-layer .arch-text { font-size: 14px; color: var(--text); }
.arch-vr {
  background: linear-gradient(135deg, rgba(94,234,212,0.12), rgba(167,139,250,0.12));
  border: 1px solid rgba(94, 234, 212, 0.35);
}
.arch-vr .arch-label { color: var(--teal); }
.arch-pill {
  position: absolute;
  top: 18px; right: 18px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 4px 8px;
  background: var(--grad);
  color: #04060a;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.phase-tag {
  display: inline-block;
  margin-left: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 2px 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  vertical-align: middle;
}
.arch-down {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  color: var(--text-dimmer);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 4px 0;
}
.arch-down svg { opacity: 0.6; }

.chain-vis {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: sticky;
  top: 90px;
}
.chain-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.chain-track {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}
.chain-link {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(5, 6, 10, 0.5);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  position: relative;
  animation: slideIn .35s ease both;
}
.chain-link .dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(94, 234, 212, 0.5);
}
.chain-link .hash { color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chain-link .hash strong { color: var(--text); }
.chain-foot { font-size: 12.5px; color: var(--text-dim); }
.chain-foot code {
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--teal);
}
@keyframes slideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============== schema ============== */

.schema-block {
  background: linear-gradient(180deg, rgba(10,13,20,0.95), rgba(5,6,10,0.95));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  box-shadow: var(--shadow-card);
  margin: 0;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}
.schema-block code { white-space: pre; }

/* ============== verticals ============== */

.vert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.vert-card {
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .2s ease, transform .2s ease;
}
.vert-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.vert-ico {
  width: 44px; height: 44px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  border-radius: 11px;
  display: grid;
  place-items: center;
  color: var(--teal);
  margin-bottom: 16px;
}
.vert-ico svg { width: 22px; height: 22px; }
.vert-card h3 { font-size: 18px; margin-bottom: 10px; }
.vert-card p { color: var(--text-dim); font-size: 14px; margin: 0 0 14px; }
.vert-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.vert-tags span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 3px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
}

/* ============== pricing ============== */

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}
.price-card {
  padding: 24px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color .2s ease, transform .2s ease;
}
.price-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.price-name {
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.price-amount {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 4px;
}
.price-amount span { font-size: 14px; color: var(--text-dim); font-weight: 500; margin-left: 2px; }
.price-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--text-dimmer);
  margin-bottom: 18px;
}
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  flex: 1;
}
.price-card li {
  font-size: 13.5px;
  color: var(--text-dim);
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
  position: relative;
  padding-left: 18px;
}
.price-card li::before {
  content: "→";
  position: absolute;
  left: 0; top: 6px;
  color: var(--teal);
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}
.price-card li:last-child { border-bottom: 0; }
.price-card-feat {
  background: linear-gradient(180deg, rgba(94,234,212,0.08), rgba(167,139,250,0.08));
  border-color: rgba(94, 234, 212, 0.35);
  box-shadow: var(--shadow-elev);
  transform: translateY(-6px);
}
.price-card-feat:hover { transform: translateY(-8px); }
.price-tag {
  position: absolute;
  top: -10px; right: 16px;
  background: var(--grad);
  color: #04060a;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 9px;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
}

/* ============== roadmap ============== */

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  counter-reset: phase;
}
.timeline li {
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
}
.timeline li::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 2px;
  background: var(--grad);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  opacity: 0.6;
}
.t-phase {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.t-when {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--teal);
  margin-bottom: 14px;
}
.timeline ul { list-style: none; padding: 0; margin: 0; }
.timeline li ul li {
  border: 0;
  padding: 4px 0 4px 18px;
  background: transparent;
  border-radius: 0;
  font-size: 14px;
  color: var(--text-dim);
  position: relative;
}
.timeline li ul li::before {
  content: "";
  position: absolute;
  top: 11px; left: 0;
  width: 8px; height: 2px;
  background: var(--grad);
  opacity: 0.7;
}
.timeline li ul li code {
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--teal);
}

/* ============== contact ============== */

.contact-wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: flex-start;
}
.contact-form {
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: var(--shadow-card);
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.field-row > div { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}
.field input,
.field select,
.field textarea {
  background: rgba(5, 6, 10, 0.5);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  transition: border-color .18s ease, background .18s ease;
  width: 100%;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--teal);
  background: rgba(5, 6, 10, 0.7);
}
.field textarea { resize: vertical; min-height: 110px; font-family: inherit; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%), linear-gradient(135deg, var(--text-dim) 50%, transparent 50%); background-position: calc(100% - 18px) 19px, calc(100% - 13px) 19px; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 36px; }

.form-foot {
  margin: 6px 0 0;
  font-size: 12.5px;
  color: var(--text-dimmer);
}
.form-foot .link { color: var(--teal); border-bottom: 1px dashed rgba(94, 234, 212, 0.4); }
.form-foot .link:hover { color: #fff; border-bottom-color: #fff; }

.form-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--teal);
  margin-top: 4px;
  min-height: 16px;
}

.contact-side { display: flex; flex-direction: column; gap: 16px; }
.contact-card {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.contact-card-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.contact-card-value {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: block;
}
a.contact-card-value { color: var(--teal); }
a.contact-card-value:hover { color: #fff; }
.contact-card-foot { font-size: 12.5px; color: var(--text-dimmer); margin-top: 6px; }
.contact-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.contact-list li {
  padding-left: 18px;
  font-size: 13.5px;
  color: var(--text-dim);
  position: relative;
}
.contact-list li::before {
  content: "→";
  position: absolute;
  left: 0; top: 0;
  color: var(--teal);
  font-family: 'JetBrains Mono', monospace;
}

/* ============== footer ============== */

.footer {
  margin-top: 64px;
  padding: 64px 0 40px;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(5,6,10,0.6), rgba(5,6,10,1));
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  margin-bottom: 8px;
}
.footer-brand .brand-mark { width: 26px; height: 26px; }
.footer-brand-img {
  height: 44px;
  width: auto;
  max-height: 44px;
  max-width: 220px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(94, 234, 212, 0.22));
}
.footer-line {
  color: var(--text-dim);
  margin: 0 0 36px;
  font-size: 15px;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 36px;
}
.footer-h {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.footer-cols a {
  display: block;
  color: var(--text-dim);
  padding: 5px 0;
  font-size: 14.5px;
  transition: color .15s ease;
}
.footer-cols a:hover { color: var(--text); }
.footer-meta {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 12.5px;
  color: var(--text-dimmer);
  flex-wrap: wrap;
}
.footer-disclaimer { max-width: 520px; }

/* ============== responsive ============== */

@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .nav-links { display: none; }
  .nav-toggle { display: grid; place-items: center; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 64px; left: 16px; right: 16px;
    flex-direction: column;
    background: rgba(10, 13, 20, 0.98);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    gap: 2px;
  }
  .nav-links.open a { padding: 12px; }

  .hero-meta { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; }
  .vert-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .price-card-feat { transform: none; }
  .timeline { grid-template-columns: 1fr; }
  .arch-wrap { grid-template-columns: 1fr; }
  .chain-vis { position: static; }
  .contact-wrap { grid-template-columns: 1fr; }
  .stack-card { grid-template-columns: 1fr; gap: 14px; padding: 22px; }
  .stack-num { font-size: 48px; }
  .field-row { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-meta { flex-direction: column; }
}

@media (max-width: 520px) {
  main { padding: 0 16px; }
  .nav-inner { padding: 12px 16px; }
  .hero { padding: 56px 0 40px; }
  .hero-code { padding: 18px 20px; font-size: 12px; border-radius: 14px; }
  .schema-block { font-size: 11.5px; padding: 18px 20px; }
  .footer-cols { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}