:root {
  --bg: #faf8f5;
  --card: #ffffff;
  --elevated: #fffdfb;
  --ink: #121a26;
  --fg: #1a2330;
  --muted: #5a6575;
  --subtle: #8a93a0;
  --accent: #ff5a12;
  --accent-hover: #e64a08;
  --accent-ink: #ffffff;
  --border: #e8e0d6;
  --alt: #fff3e8;
  --photo: #121a26;
  --font-display: "Barlow Condensed", "Segoe UI", system-ui, sans-serif;
  --font-sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
p { margin: 0; text-wrap: pretty; }

.container { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 4rem; }
.logo { display: inline-flex; align-items: center; gap: 0.65rem; text-decoration: none; }
.logo-mark { width: 36px; height: 36px; }
.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-name { font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; letter-spacing: 0.14em; color: var(--fg); }
.logo-name span { color: var(--accent); }
.logo-sub { margin-top: 0.15rem; font-family: var(--font-display); font-size: 0.62rem; font-weight: 500; letter-spacing: 0.28em; color: var(--muted); }
.nav { display: none; gap: 0.15rem; }
.nav a { padding: 0.5rem 0.75rem; text-decoration: none; font-size: 0.9rem; color: var(--muted); }
.nav a:hover { color: var(--fg); }
.header-actions { display: flex; align-items: center; gap: 0.5rem; }
.header-cta { display: none; }
.menu-toggle {
  width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--card); color: var(--fg); cursor: pointer;
}
.mobile-nav { display: none; border-top: 1px solid var(--border); background: #fff; padding: 0.5rem 1rem 0.85rem; }
.mobile-nav.open { display: block; }
.mobile-nav a { display: flex; min-height: 44px; align-items: center; padding: 0 0.75rem; text-decoration: none; color: var(--fg); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 1.25rem; border-radius: 8px;
  font: 500 0.95rem var(--font-sans); text-decoration: none; cursor: pointer; border: 0;
}
.btn-lg { height: 48px; padding: 0 1.5rem; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 10px 24px -10px var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: #fff; color: var(--fg); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--border); padding: 5rem 0; color: #fff; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(105deg, rgba(18,26,38,0.55) 0%, rgba(18,26,38,0.22) 55%, rgba(255,90,18,0.15) 100%),
    linear-gradient(180deg, rgba(18,26,38,0.1), rgba(18,26,38,0.4));
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, black 20%, transparent 75%);
}
.badge {
  display: inline-flex; align-items: center; padding: 0.25rem 0.85rem; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,90,18,0.9);
  font-family: var(--font-display); font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase; color: #fff;
}
.hero h1 {
  margin-top: 1.25rem; max-width: 18ch; font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.25rem); font-weight: 600; line-height: 1.05;
  letter-spacing: -0.02em; color: #fff; text-shadow: 0 2px 18px rgba(18,26,38,0.35);
}
.hero-lead { margin-top: 1.25rem; max-width: 36rem; font-size: 1.05rem; color: rgba(255,255,255,0.92); text-shadow: 0 1px 10px rgba(18,26,38,0.35); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.hero .btn-secondary {
  background: rgba(255,255,255,0.18); color: #fff; border-color: rgba(255,255,255,0.5); backdrop-filter: blur(6px);
}
.hero .btn-secondary:hover { background: rgba(255,255,255,0.28); }

.section { padding: 4.5rem 0; background: var(--bg); }
.section-alt { background: var(--alt); border-block: 1px solid var(--border); }
.kicker { font-family: var(--font-display); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent); }
.section h2, .blog-cta h2 { margin-top: 0.6rem; font-family: var(--font-display); font-size: clamp(2rem, 4vw, 2.75rem); font-weight: 600; letter-spacing: -0.02em; color: var(--fg); }
.section-lead { margin-top: 0.85rem; max-width: 36rem; color: var(--muted); }

.grid-2 { display: grid; gap: 1rem; margin-top: 2.25rem; }
.card {
  background: #fff; border: 1px solid var(--border); border-top: 3px solid var(--accent);
  border-radius: 10px; padding: 1.5rem;
  box-shadow: 0 12px 32px -20px rgba(255,90,18,0.35), 0 4px 16px -8px rgba(26,35,48,0.08);
}
.card-icon { width: 20px; height: 20px; color: var(--accent); }
.card h3, .comp-body h3 { margin-top: 1rem; font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; color: var(--fg); }
.card p, .comp-body p { margin-top: 0.5rem; font-size: 0.92rem; color: var(--muted); }

.comp-card {
  margin-top: 2.25rem; max-width: 36rem; background: #fff;
  border: 1px solid var(--border); border-top: 3px solid var(--accent); border-radius: 10px;
  box-shadow: 0 12px 32px -20px rgba(255,90,18,0.35), 0 4px 16px -8px rgba(26,35,48,0.08);
}
.comp-body { padding: 1.5rem; }
.comp-body h3 { margin-top: 0; }

.calc-stack { display: grid; gap: 1.25rem; margin-top: 2.25rem; }
.calc-panel {
  background: #e8eaed; border: 1px solid var(--border); border-top: 3px solid var(--accent);
  border-radius: 14px; padding: 1.5rem;
  box-shadow: 0 12px 32px -20px rgba(255,90,18,0.3), 0 4px 16px -8px rgba(26,35,48,0.08);
}
.calc-panel h3 { margin-top: 0.4rem; font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; color: var(--fg); }
.calc-panel > p { margin-top: 0.5rem; max-width: 36rem; font-size: 0.92rem; color: var(--muted); }
.calc-grid { display: grid; gap: 2rem; margin-top: 1.5rem; }
.field { margin-top: 1.25rem; }
.field:first-child { margin-top: 0; }
.field label { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; font-size: 0.9rem; font-weight: 500; color: var(--fg); }
.field-input-wrap { display: inline-flex; align-items: center; gap: 0.35rem; font-family: ui-monospace, monospace; font-size: 0.9rem; color: var(--accent); font-variant-numeric: tabular-nums; }
.field-input-wrap input[type="number"] {
  width: 5.25rem; padding: 0.35rem 0.5rem; border-radius: 6px; border: 1px solid var(--border);
  background: #fff; color: var(--fg); font: inherit; text-align: right; outline: none;
}
.field-input-wrap input[type="number"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,90,18,0.2); }
.field-input-wrap .unit { color: var(--accent); min-width: 2.4rem; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 0.5rem; border-radius: 999px; background: #efe6db; outline: none; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 1.25rem; height: 1.25rem; border-radius: 999px; background: var(--accent); border: 2px solid #fff; cursor: pointer; box-shadow: 0 2px 6px rgba(255,90,18,0.4); }
input[type="range"]::-moz-range-thumb { width: 1.25rem; height: 1.25rem; border-radius: 999px; background: var(--accent); border: 2px solid #fff; cursor: pointer; }
.range-ends { display: flex; justify-content: space-between; margin-top: 0.4rem; font-family: ui-monospace, monospace; font-size: 0.7rem; color: var(--subtle); }
.results { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; align-content: start; }
.result-card { border: 1px solid var(--border); background: #f3f4f6; border-radius: 10px; padding: 1rem; }
.result-card.highlight { border-color: rgba(255,90,18,0.45); background: #fff4ec; }
.result-card .label { font-size: 0.72rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.result-card .force { margin-top: 0.5rem; font-family: var(--font-display); font-size: 1.85rem; font-weight: 600; font-variant-numeric: tabular-nums; line-height: 1; color: var(--fg); }
.result-card .meta { margin-top: 0.4rem; font-size: 0.75rem; color: var(--subtle); }
.calc-note { grid-column: 1 / -1; font-size: 0.75rem; color: var(--subtle); line-height: 1.5; }

.contact-grid { display: grid; gap: 2.5rem; }
.contact-direct { display: inline-flex; align-items: center; gap: 0.5rem; margin-top: 1.5rem; text-decoration: none; color: var(--fg); }
.contact-direct:hover { color: var(--accent); }
.contact-direct svg { width: 16px; height: 16px; color: var(--accent); }
.form-panel {
  background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 1.5rem;
  box-shadow: 0 12px 32px -20px rgba(255,90,18,0.3), 0 4px 16px -8px rgba(26,35,48,0.08);
}
.form-panel label { display: block; margin-bottom: 1rem; font-size: 0.9rem; font-weight: 500; color: var(--fg); }
.form-panel input, .form-panel textarea {
  display: block; width: 100%; margin-top: 0.4rem; padding: 0.65rem 0.85rem;
  border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--fg); font: inherit; outline: none;
}
.form-panel textarea { min-height: 8rem; resize: vertical; }
.form-panel input:focus, .form-panel textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,90,18,0.2); }
.form-status { margin-top: 0.75rem; font-size: 0.9rem; color: var(--muted); display: none; }
.form-status.show { display: block; }

.blog-cta { padding: 3.5rem 0; text-align: center; border-top: 1px solid var(--border); background: var(--bg); }
.blog-cta h2 { color: var(--fg); }
.blog-cta p { margin: 0.75rem auto 1.5rem; max-width: 28rem; color: var(--muted); }

.site-footer { position: relative; overflow: hidden; border-top: 1px solid var(--border); color: #fff; }
.footer-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.footer-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(18,26,38,0.92), rgba(18,26,38,0.7) 55%, rgba(18,26,38,0.4)); }
.footer-inner { position: relative; display: flex; flex-direction: column; gap: 1.5rem; padding: 3.5rem 0; }
.footer-tagline { margin-top: 0.75rem; max-width: 22rem; font-size: 0.9rem; color: rgba(255,255,255,0.75); }
.footer-meta { font-size: 0.9rem; color: rgba(255,255,255,0.75); }
.footer-meta a { color: #fff; text-decoration: none; }
.footer-meta a:hover { color: var(--accent); }
.footer-copy { margin-top: 0.5rem; }
.site-footer .logo-name { color: #fff; }
.site-footer .logo-sub { color: rgba(255,255,255,0.7); }

@media (min-width: 760px) {
  .nav { display: flex; }
  .header-cta { display: inline-flex; }
  .menu-toggle { display: none; }
  .mobile-nav, .mobile-nav.open { display: none; }
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .calc-grid { grid-template-columns: 1.1fr 0.9fr; }
  .contact-grid { grid-template-columns: 1fr 1.05fr; align-items: start; }
  .footer-inner { flex-direction: row; justify-content: space-between; align-items: flex-end; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }