/* ===== Tokens ===== */
:root {
  --bg: #0a0e14;
  --bg-elev: #10161f;
  --bg-elev-2: #151c27;
  --border: #202a38;
  --border-hover: #2e3c4e;
  --text: #e9eef4;
  --text-dim: #93a1b1;
  --text-faint: #5c6b7d;
  --accent: #5b8dff;
  --accent-2: #29e0c6;
  --accent-soft: rgba(91, 141, 255, 0.12);
  --radius: 14px;
  --radius-sm: 8px;
  --container: 1160px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 18px;
}

.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px var(--accent-2);
}

h1, h2, h3, h4 {
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.25rem; }

p { color: var(--text-dim); }

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: var(--text-dim);
  max-width: 640px;
}

/* ===== Background grid texture ===== */
.grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 20%, transparent 75%);
  pointer-events: none;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #060a10;
  box-shadow: 0 0 0 0 rgba(91,141,255,0);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(91,141,255,0.35);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-hover);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-block { width: 100%; }

/* ===== Header / Nav ===== */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 20, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo img {
  height: 44px;
  width: auto;
  display: block;
}

.footer-logo {
  margin-bottom: 14px;
}

.footer-logo img {
  height: 36px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 38px;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 0.15s ease;
  position: relative;
}

.nav-links a:hover { color: var(--text); }

.nav-links a.active { color: var(--text); }

.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -22px;
  height: 2px;
  background: var(--accent);
}

.nav-right { display: flex; align-items: center; gap: 22px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  display: block;
}

/* ===== Sections ===== */
section { position: relative; padding: 96px 0; }
section.tight { padding: 64px 0; }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.divider {
  height: 1px;
  background: var(--border);
  border: none;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 64px;
  flex-wrap: wrap;
}

.hero-stat .num {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--text);
}

.hero-stat .label {
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: 2px;
}

/* Terminal/graph visual */
.hero-visual {
  position: relative;
}

.terminal {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.45);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev-2);
}

.terminal-dot { width: 10px; height: 10px; border-radius: 50%; background: #3a4657; }
.terminal-title {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
}

.terminal-body {
  padding: 22px 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.9;
}

.terminal-body .c1 { color: var(--accent-2); }
.terminal-body .c2 { color: var(--accent); }
.terminal-body .c3 { color: var(--text-faint); }
.terminal-body .c4 { color: var(--text); }

.cursor {
  display: inline-block;
  width: 7px;
  height: 15px;
  background: var(--accent-2);
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
  vertical-align: -2px;
}

@keyframes blink { 50% { opacity: 0; } }

/* ===== Cards / Grid ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover { border-color: var(--border-hover); transform: translateY(-3px); }

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.94rem; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
}

/* ===== Service detail blocks ===== */
.service-block {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  padding: 64px 0;
  align-items: start;
}

.service-block + .service-block { border-top: 1px solid var(--border); }

.service-index {
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.check-list li {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.94rem;
}

.check-list li:last-child { border-bottom: none; }

.check-list li svg { flex-shrink: 0; margin-top: 3px; color: var(--accent-2); }

/* ===== Steps / process ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }

.step { position: relative; padding-top: 46px; }

.step::before {
  counter-increment: step;
  content: '0' counter(step);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  position: absolute;
  top: 0; left: 0;
}

.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { font-size: 0.9rem; }

/* ===== CTA band ===== */
.cta-band {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--accent-soft), transparent 70%);
  top: -250px; left: 50%;
  transform: translateX(-50%);
}

.cta-band h2 { margin-bottom: 14px; }
.cta-band p { max-width: 480px; margin: 0 auto 30px; }
.cta-band .hero-actions { justify-content: center; }

/* ===== About page ===== */
.value-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.value-item .num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 12px;
  display: block;
}

.about-photo-block {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.photo-frame {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 24px;
  aspect-ratio: 4 / 5;
  background: var(--bg-elev-2);
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-dim);
}

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }

.field { margin-bottom: 20px; }

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dim);
}

.field input, .field textarea, .field select {
  width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.15s ease;
}

.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
}

.field textarea { resize: vertical; min-height: 130px; }

.contact-info-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.contact-info-item:last-child { border-bottom: none; }

.contact-info-item .card-icon { margin-bottom: 0; flex-shrink: 0; }

.form-note { font-size: 0.82rem; color: var(--text-faint); margin-top: 12px; }

.form-status {
  margin-top: 16px;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  display: none;
}

.form-status.show { display: block; }
.form-status.ok { color: var(--accent-2); }
.form-status.err { color: #ff8a8a; }

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 36px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col a, .footer-col p {
  display: block;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.footer-col a:hover { color: var(--text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-faint);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in { opacity: 1; transform: translateY(0); }

/* ===== Page header (inner pages) ===== */
.page-header { padding: 150px 0 80px; position: relative; }
.page-header .lead { margin-top: 18px; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .value-row { grid-template-columns: 1fr 1fr; }
  .service-block { grid-template-columns: 1fr; gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav .logo img { height: 36px; }
  .nav-links { position: fixed; top: 76px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-direction: column; align-items: flex-start; padding: 24px 28px; gap: 20px; transform: translateY(-140%); transition: transform 0.25s ease; }
  .nav-links.open { transform: translateY(0); }
  .nav-links a.active::after { display: none; }
  .nav-toggle { display: flex; }
  .nav-right .btn-outline { display: none; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .value-row { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 24px; }
  .footer-top { flex-direction: column; }
  section { padding: 64px 0; }
  .hero { padding: 90px 0 60px; }
  .page-header { padding: 120px 0 56px; }
}