/* ── Reset & Base ───────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --btc-orange: #F7931A;
  --btc-orange-dark: #E2820E;
  --bg-primary: #0D1117;
  --bg-secondary: #12171F;
  --bg-card: #171D26;
  --text-primary: #E8EFF6;
  --text-secondary: #93A1B1;
  --text-tertiary: #6E7E90;
  --border-color: #262E3A;
  --border-strong: #333D4B;
  --success: #3FB950;
  --danger: #F0883E;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 1120px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: var(--btc-orange); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--btc-orange-dark); }

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

:focus-visible { outline: 2px solid var(--btc-orange); outline-offset: 3px; border-radius: 4px; }

::selection { background: rgba(247, 147, 26, 0.25); }

/* ── Icons ──────────────────────────────────────────── */
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.ico {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  border-radius: 8px;
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  text-align: center;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.18s, border-color 0.18s, color 0.18s, box-shadow 0.18s;
  font-family: inherit;
}

.btn-primary {
  background: var(--btc-orange);
  color: #0D1117;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}
.btn-primary:hover { background: #FFA633; color: #0D1117; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-outline {
  border-color: var(--border-strong);
  color: var(--text-primary);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--btc-orange);
  color: var(--btc-orange);
  background: rgba(247, 147, 26, 0.06);
}

.btn-sm { padding: 0.5rem 1.15rem; font-size: 0.85rem; }
.btn-block { display: block; width: 100%; }

/* ── Navigation ─────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border-color);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nav-logo-img { height: 28px; width: auto; }

.nav-links { display: flex; gap: 2rem; align-items: center; list-style: none; }

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links .btn-primary,
.nav-links .btn-primary:hover { color: #0D1117; }

.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  color: var(--text-primary); font-size: 1.4rem; line-height: 1;
}

/* ── Hero ───────────────────────────────────────────── */
.hero {
  padding: 11.5rem 1.75rem 7rem;
  text-align: center;
  background:
    radial-gradient(ellipse 55% 45% at 50% -5%, rgba(247, 147, 26, 0.16), transparent 70%),
    var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
}

.hero-content { max-width: 780px; margin: 0 auto; }

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.79rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.hero h1 {
  font-size: clamp(2.35rem, 5.6vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  margin-bottom: 1.6rem;
}

.highlight { color: var(--btc-orange); }

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.19rem);
  color: var(--text-secondary);
  max-width: 610px;
  margin: 0 auto 1.35rem;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  letter-spacing: 0.01em;
  margin-bottom: 2.5rem;
}

.hero-actions { display: flex; gap: 0.85rem; justify-content: center; flex-wrap: wrap; }

/* ── Trust strip ────────────────────────────────────── */
.trust-strip {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.trust-strip-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 3rem;
  justify-content: center;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.trust-item .ico { width: 17px; height: 17px; color: var(--btc-orange); }

/* ── Sections ───────────────────────────────────────── */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 6.5rem 1.75rem;
}

.section-alt {
  max-width: none;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-alt > * { max-width: var(--max-width); margin-left: auto; margin-right: auto; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--btc-orange);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.6vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.18;
  margin-bottom: 1.1rem;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 660px;
  margin-bottom: 3.5rem;
  font-size: 1.03rem;
}

/* In full-bleed .section-alt blocks every child is centered at --max-width.
   The narrower .section-desc would centre inside that band instead of lining
   up with the heading, so re-anchor it to the band's left edge. */
.section-alt > .section-desc {
  margin-left: max(0px, calc((100% - var(--max-width)) / 2));
  margin-right: auto;
}

/* ── Pain-point quotes ──────────────────────────────── */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.15rem;
}

.quote-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.6rem 1.6rem 1.6rem 2.9rem;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.quote-card::before {
  content: '\201C';
  position: absolute;
  left: 1.1rem; top: 1.15rem;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--btc-orange);
  opacity: 0.5;
}

/* ── Card grid ──────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.85rem 1.75rem;
  transition: border-color 0.2s, background 0.2s;
}

.card:hover { border-color: var(--border-strong); background: #1A212B; }

.card-icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: rgba(247, 147, 26, 0.1);
  border: 1px solid rgba(247, 147, 26, 0.2);
  color: var(--btc-orange);
  margin-bottom: 1.3rem;
}

.card h3 {
  font-size: 1.08rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  margin-bottom: 0.6rem;
}

.card p { color: var(--text-secondary); font-size: 0.93rem; line-height: 1.65; }

/* ── Steps ──────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(238px, 1fr));
  gap: 1.25rem;
  list-style: none;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.75rem 1.6rem;
}

.step-num {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: rgba(247, 147, 26, 0.1);
  border: 1px solid rgba(247, 147, 26, 0.25);
  color: var(--btc-orange);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.step h3 {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  margin-bottom: 0.5rem;
}

.step p { color: var(--text-secondary); font-size: 0.93rem; }

/* ── Standards ──────────────────────────────────────── */
.promise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(370px, 1fr));
  gap: 1rem;
}

.promise-item {
  display: flex;
  gap: 0.95rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem 1.6rem;
}

.promise-item > .ico {
  width: 19px; height: 19px;
  color: var(--success);
  margin-top: 0.28rem;
  stroke-width: 2.25;
}

.promise-item h3 {
  font-size: 0.99rem;
  font-weight: 650;
  letter-spacing: -0.012em;
  line-height: 1.45;
  margin-bottom: 0.45rem;
}

.promise-item p { color: var(--text-secondary); font-size: 0.91rem; line-height: 1.65; }

/* ── Contact ────────────────────────────────────────── */
.contact-head { text-align: center; margin-bottom: 3rem; }
.contact-head .section-title { margin-bottom: 0.9rem; }
.contact-head p { color: var(--text-secondary); max-width: 560px; margin: 0 auto; }

.contact-form {
  max-width: 700px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.1rem;
  display: grid;
  gap: 1.15rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.15rem;
}

.form-row { display: grid; gap: 0.45rem; }

.form-row label {
  font-size: 0.83rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--text-primary);
}

.optional { color: var(--text-tertiary); font-weight: 400; }

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 0.72rem 0.85rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.94rem;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.form-row textarea { resize: vertical; min-height: 120px; }

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--btc-orange);
  box-shadow: 0 0 0 3px rgba(247, 147, 26, 0.14);
  outline: none;
}

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-status { font-size: 0.88rem; color: var(--text-secondary); min-height: 1.2em; }
.form-status.ok { color: var(--success); }
.form-status.err { color: var(--danger); }

.form-note {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border-color);
  padding-top: 1.15rem;
}

.form-note .ico { width: 16px; height: 16px; margin-top: 0.2rem; }

/* ── Footer ─────────────────────────────────────────── */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 1.75rem 2.75rem;
}

.footer-inner { max-width: var(--max-width); margin: 0 auto; display: grid; gap: 2rem; }

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-brand { display: flex; gap: 0.9rem; align-items: flex-start; }
.footer-logo { height: 34px; width: auto; flex-shrink: 0; }
.footer-brand strong { font-size: 1rem; letter-spacing: -0.015em; }
.footer-brand p { color: var(--text-tertiary); font-size: 0.87rem; line-height: 1.6; }

.footer-links { display: flex; flex-wrap: wrap; gap: 1.6rem; }
.footer-links a { color: var(--text-secondary); font-size: 0.87rem; }
.footer-links a:hover { color: var(--btc-orange); }

.disclaimer {
  color: var(--text-tertiary);
  font-size: 0.79rem;
  line-height: 1.75;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  max-width: 880px;
}

.copyright { color: var(--text-tertiary); font-size: 0.81rem; }

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 880px) {
  .promise-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 0 1.25rem;
  }

  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; text-align: center; }
  .nav-links li a { display: block; padding: 0.85rem 1.5rem; }
  .nav-links .btn-primary { margin: 0.6rem 1.5rem 0; }

  .hero { padding: 8.5rem 1.5rem 5rem; }
  .hero-actions .btn { width: 100%; }
  .section { padding: 4.5rem 1.5rem; }
  .form-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 1.5rem; }
  .trust-strip-inner { gap: 0.7rem; flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}