/* Stackside-inspired layout system — variant 1, side-rail editorial */
:root {
  --page: #f0f3f4;
  --surface: #fdffff;
  --text: #000000;
  --muted: #007548;
  --accent: #00ff99;
  --accent-deep: #007548;
  --accent-alt: #65d4a8;
  --line: rgba(0, 0, 0, 0.1);
  --rail-w: 280px;
  --canvas-max: 1680px;
  --section-space: clamp(4rem, 8vw, 7rem);
  --radius: 1rem;
  --radius-pill: 9999px;
  --font-display: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  line-height: 1.55;
  font-family: var(--font-body);
  background: var(--page);
  color: var(--text);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(0, 255, 153, 0.07) 0, transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(0, 117, 72, 0.06) 0, transparent 38%);
}

body, button, input, select, textarea { font: inherit; }

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

img, svg, video, canvas, iframe {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.2vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  margin-bottom: 1.25rem;
  max-width: 14ch;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 0.85rem;
}

h3 {
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

p { color: var(--muted); }

/* Page shell: side rail + canvas */
.page-frame {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  min-height: 100vh;
  max-width: 2160px;
  margin: 0 auto;
}

.site-rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  z-index: 40;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 88%, var(--page));
  backdrop-filter: blur(12px);
}

.rail-inner {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 1.5rem;
  min-height: 100vh;
  padding: 1.35rem 1.1rem 1.5rem;
  min-width: 0;
}

.brand {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 0.95rem;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: 48px;
  height: 48px;
  max-width: 64px;
  max-height: 64px;
  border-radius: 12px;
  overflow: hidden;
  flex: 0 0 auto;
}

.brand-logo svg { width: 100%; height: 100%; }

.brand small {
  display: block;
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-rail nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-self: center;
  width: 100%;
  min-width: 0;
}

.site-rail nav a {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.55rem 0.75rem;
  border-left: 2px solid transparent;
  color: var(--muted);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.site-rail nav a:hover {
  color: var(--text);
  border-left-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.header-cta, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.15rem;
  border: 1px solid var(--text);
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.82rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.header-cta {
  align-self: end;
  width: 100%;
  white-space: nowrap;
}

.header-cta, .button-primary {
  background: var(--text);
  color: var(--surface);
  border-color: var(--text);
}

.button-primary:hover, .header-cta:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 25%, transparent);
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.button-secondary:hover {
  border-color: var(--accent-deep);
  color: var(--accent-deep);
}

.page-canvas {
  min-width: 0;
  display: flex;
  justify-content: center;
}

.page-main {
  width: min(var(--canvas-max), 100%);
  padding: 0 clamp(1.25rem, 3vw, 2.75rem);
}

/* Hero — rail-focus band */
.hero {
  padding: clamp(2.5rem, 5vw, 4.5rem) 0 var(--section-space);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.hero-copy { min-width: 0; }

.eyebrow, .section-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  margin-bottom: 0.85rem;
  color: var(--accent-deep);
}

.lead {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  max-width: 42ch;
  margin-bottom: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.75rem 0 1rem;
}

.geo-line {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--muted);
}

.hero-visual {
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 280px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, var(--surface)), var(--surface)),
    repeating-linear-gradient(
      -12deg,
      transparent 0 14px,
      color-mix(in srgb, var(--text) 4%, transparent) 14px 15px
    );
  box-shadow: 0 24px 64px color-mix(in srgb, var(--accent-deep) 12%, transparent);
}

.hero-visual > svg {
  width: 100%;
  height: 100%;
}

/* Content stream sections */
.content-stream {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.section {
  padding: var(--section-space) 0;
  border-bottom: 1px solid var(--line);
}

.section-inner {
  width: 100%;
  margin: 0 auto;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 2.25rem;
}

.section-heading > p { font-size: 1.02rem; }

.fact-disclaimer {
  font-size: 0.76rem !important;
  padding: 0.6rem 0.85rem;
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  margin-top: 1rem;
}

/* Services — mosaic grid */
.band-services .cards-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 0.85rem;
}

.band-services .card:nth-child(1),
.band-services .card:nth-child(2),
.band-services .card:nth-child(3) { grid-column: span 4; }
.band-services .card:nth-child(4),
.band-services .card:nth-child(5) { grid-column: span 6; }
.band-services .card:nth-child(6) { grid-column: span 12; }

/* Process — vertical timeline on wide */
.band-process .process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

.band-process .process-list li {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-top: 3px solid var(--accent);
  min-width: 0;
}

/* Stats — horizontal strip */
.band-stats .stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.band-stats .stat {
  padding: 1.35rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
}

.band-stats .stat strong {
  display: block;
  font-size: 2rem;
  font-family: var(--font-mono);
  color: var(--accent-deep);
}

.band-stats .stat span { font-weight: 700; }

.band-stats .stat p { font-size: 0.82rem; margin: 0.45rem 0 0; }

/* Benefits — staggered 2-col */
.band-benefits .cards-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.85rem;
}

.band-benefits .card { grid-column: span 2; }
.band-benefits .card:nth-child(4),
.band-benefits .card:nth-child(5) { grid-column: span 3; }

/* Geography — dark band */
.band-geography {
  background: var(--text);
  color: var(--surface);
  border-bottom-color: color-mix(in srgb, var(--surface) 15%, transparent);
}

.band-geography p,
.band-geography span,
.band-geography .section-kicker { color: color-mix(in srgb, var(--surface) 72%, transparent); }

.band-geography .section-kicker { color: var(--accent); }

.band-geography .geo-chips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.band-geography .geo-chip {
  padding: 1.15rem 1.25rem;
  border: 1px solid color-mix(in srgb, var(--surface) 18%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 4%, transparent);
}

.band-geography .geo-chip span { color: color-mix(in srgb, var(--surface) 65%, transparent); font-size: 0.85rem; }

/* Cards shared */
.card {
  min-width: 0;
  padding: 1.35rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.card p { margin-bottom: 0; }

.card-icon, .step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 0.85rem;
  color: var(--accent-deep);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: 10px;
}

.card-icon svg, .step-icon svg { width: 26px; height: 26px; overflow: visible; }

.icon-draw path { stroke-dasharray: 34 8; animation: iconDraw 12s linear infinite; }
.icon-pulse { transform-box: fill-box; transform-origin: center; animation: iconPulse 12s ease-in-out infinite; }
.icon-slide { animation: iconSlide 12s ease-in-out infinite; }
.icon-spin { transform-box: fill-box; transform-origin: center; animation: iconSpin 14s linear infinite; }

@keyframes iconDraw { to { stroke-dashoffset: -84; } }
@keyframes iconPulse { 50% { transform: scale(0.9); opacity: 0.75; } }
@keyframes iconSlide { 50% { transform: translateX(4px); } }
@keyframes iconSpin { to { transform: rotate(360deg); } }

.card-label {
  display: block;
  color: var(--accent-deep);
  font-size: 0.68rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.55rem;
}

.card small {
  display: block;
  color: var(--muted);
  margin-top: 0.45rem;
  font-size: 0.82rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

/* Guide — two-column chapters */
.band-guide .guide-body {
  columns: 2;
  column-gap: 2rem;
  min-width: 0;
}

.band-guide .chapter {
  break-inside: avoid;
  margin-bottom: 1.75rem;
  padding: 1.15rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.band-guide .chapter li { color: var(--muted); margin: 0.45rem 0; }

/* Calculator — inset panel */
.band-calculator .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 2.5rem;
  align-items: start;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  background: var(--text);
  color: var(--surface);
  border-radius: calc(var(--radius) + 4px);
}

.band-calculator p,
.band-calculator .section-kicker { color: color-mix(in srgb, var(--surface) 72%, transparent); }

.band-calculator .section-kicker { color: var(--accent); }

.band-calculator .calculator-form {
  display: grid;
  gap: 0.85rem;
  background: color-mix(in srgb, var(--surface) 8%, transparent);
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--surface) 12%, transparent);
}

.band-calculator label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.78rem;
  color: color-mix(in srgb, var(--surface) 70%, transparent);
}

.band-calculator output {
  font-size: 1.05rem;
  color: var(--accent);
  font-weight: 800;
}

/* FAQ */
.band-faq .faq-list { max-width: 920px; }

.band-faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.95rem 0;
}

.band-faq summary {
  cursor: pointer;
  font-weight: 800;
  padding-right: 1.5rem;
}

.band-faq p { padding-right: 1.5rem; }

/* Contact */
.band-contact .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1.1fr);
  gap: 2.5rem;
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 0.85rem;
  background: var(--surface);
  padding: 1.35rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.contact-form label {
  display: grid;
  gap: 0.3rem;
  color: var(--muted);
  font-size: 0.8rem;
}

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--page);
  color: var(--text);
  padding: 0.8rem 0.85rem;
  border-radius: calc(var(--radius) * 0.65);
}

textarea { min-height: 110px; resize: vertical; }

.form-message { color: var(--accent-deep); margin: 0; }

/* Footer */
.site-footer {
  padding: 3rem 0 4rem;
  background: color-mix(in srgb, var(--surface) 70%, var(--page));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand { font-size: 1.35rem; }

.site-footer a {
  display: block;
  color: var(--muted);
  margin: 0.3rem 0;
  font-size: 0.88rem;
}

.site-footer a:hover { color: var(--accent-deep); }

/* Tablet */
@media (max-width: 1100px) {
  :root { --rail-w: 240px; }

  .band-services .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .band-services .card { grid-column: span 1 !important; }

  .band-process .process-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .band-benefits .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .band-benefits .card { grid-column: span 1 !important; }
  .band-stats .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .band-geography .geo-chips { grid-template-columns: 1fr; }
  .band-guide .guide-body { columns: 1; }
  .band-calculator .section-inner { grid-template-columns: 1fr; }
  .band-contact .contact-grid { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 720px) {
  .page-frame { grid-template-columns: 1fr; }

  .site-rail {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .rail-inner {
    min-height: auto;
    grid-template-rows: auto auto auto;
    padding: 0.85rem 1rem 1rem;
  }

  .brand-logo { width: 40px; height: 40px; }

  .site-rail nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.25rem;
    align-self: stretch;
  }

  .site-rail nav a {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.45rem 0.55rem;
    font-size: 0.68rem;
  }

  .site-rail nav a:hover { border-bottom-color: var(--accent); border-left-color: transparent; }

  .header-cta { width: auto; justify-self: start; }

  .page-main { padding: 0 1rem; }

  .cards-grid,
  .band-process .process-list,
  .band-stats .stats-grid,
  .footer-grid { grid-template-columns: 1fr; }

  h1 { max-width: none; font-size: clamp(2rem, 11vw, 3.2rem); }

  .section { padding: 3.5rem 0; }

  .hero-visual { min-height: 220px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .card-icon, .step-icon,
  .card-icon svg, .step-icon svg,
  .card-icon path, .step-icon path,
  .card { animation: none !important; transition: none !important; }

  .card:hover { transform: none; }
  .button-primary:hover, .header-cta:hover { transform: none; }
}