/* Altitude × proof-first × warm-gray-violet × isometric-technical-cutaway × neo-grotesk-compact */

:root {
  --gl-bg: #ebe8e4;
  --gl-bg-alt: #e2ded8;
  --gl-surface: rgba(255, 255, 255, 0.78);
  --gl-surface-raised: rgba(255, 255, 255, 0.92);
  --gl-ink: #2a2730;
  --gl-ink-muted: #6d6673;
  --gl-ink-subtle: #948d98;
  --gl-accent: #7b5bb8;
  --gl-accent-alt: #9d7fd4;
  --gl-accent-ink: #ffffff;
  --gl-line: rgba(42, 39, 48, 0.12);
  --gl-line-strong: rgba(42, 39, 48, 0.2);
  --gl-glow: rgba(123, 91, 184, 0.22);
  --gl-glass: rgba(255, 255, 255, 0.55);
  --gl-font-display: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --gl-font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --gl-tracking-display: -0.035em;
  --gl-weight-display: 650;
  --gl-weight-body: 400;
  --gl-radius: 6px;
  --gl-radius-lg: 18px;
  --gl-radius-pill: 999px;
  --gl-duration: 0.28s;
  --gl-duration-slow: 0.72s;
  --gl-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --rail-width: 248px;
  --content-max: 1320px;
  --page-gutter: clamp(1rem, 2.8vw, 2.25rem);
  --hero-max-h-desktop: 55vh;
  --hero-max-h-tablet: 44vh;
  --hero-max-h-mobile: 38vh;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: clip;
  font-family: var(--gl-font-body);
  font-weight: var(--gl-weight-body);
  font-size: 0.9375rem;
  line-height: 1.58;
  letter-spacing: -0.015em;
  color: var(--gl-ink);
  background: var(--gl-bg);
}

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

a { color: inherit; }

.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  width: 100%;
  max-width: 2160px;
  min-height: 100vh;
  margin: 0 auto;
}

.side-rail {
  position: sticky;
  top: 0;
  z-index: 40;
  width: 100%;
  background: var(--gl-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gl-line);
}

.site-header {
  padding: 0.75rem var(--page-gutter);
}

.header-inner,
.rail-brand-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1.25rem;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
  text-decoration: none;
  font-family: var(--gl-font-display);
  font-weight: var(--gl-weight-display);
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gl-ink);
}

.brand-logo {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  max-width: 64px;
  max-height: 64px;
  border-radius: 50%;
  border: 1px solid var(--gl-line-strong);
  background:
    radial-gradient(circle at 35% 32%, var(--gl-accent-alt) 0%, transparent 58%),
    linear-gradient(145deg, #3d3550 0%, #2a2730 100%);
  box-shadow: 0 0 20px var(--gl-glow);
}

.brand small {
  display: block;
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--gl-ink-muted);
  margin-top: 0.12rem;
}

.rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  margin-left: auto;
}

.rail-nav a,
.header-cta {
  font-family: var(--gl-font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--gl-ink-muted);
  transition: color var(--gl-duration) var(--gl-ease);
}

.rail-nav a:hover,
.header-cta:hover {
  color: var(--gl-accent);
}

.header-cta {
  padding: 0.5rem 1rem;
  border-radius: var(--gl-radius-pill);
  border: 1px solid rgba(123, 91, 184, 0.35);
  background: var(--gl-surface);
  color: var(--gl-ink);
}

.page-main {
  min-width: 0;
  width: 100%;
}

.section-inner {
  width: min(100% - 2 * var(--page-gutter), var(--content-max));
  margin-inline: auto;
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

/* Hero — proof-first + Altitude glass */
.hero {
  position: relative;
  border-bottom: 1px solid var(--gl-line);
  background:
    linear-gradient(135deg, rgba(123, 91, 184, 0.06) 0%, transparent 42%),
    var(--gl-bg);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  top: 12%;
  bottom: 8%;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--gl-line-strong), transparent);
  pointer-events: none;
  opacity: 0.55;
}

.hero::before { left: clamp(1rem, 8vw, 6rem); }
.hero::after { right: clamp(1rem, 8vw, 6rem); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
  padding-block: clamp(2rem, 4vw, 3.25rem);
}

.hero-copy {
  position: relative;
  z-index: 2;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.eyebrow {
  font-family: var(--gl-font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gl-accent);
}

.hero-copy .lead {
  order: -1;
  margin: 0;
  padding: 0.85rem 1rem;
  max-width: 48ch;
  font-size: 1rem;
  color: var(--gl-ink-muted);
  border-left: 3px solid var(--gl-accent);
  background: var(--gl-surface);
  border-radius: 0 var(--gl-radius-lg) var(--gl-radius-lg) 0;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 0 0 1px var(--gl-line);
}

h1, h2, h3 {
  margin: 0 0 0.75rem;
  font-family: var(--gl-font-display);
  font-weight: var(--gl-weight-display);
  letter-spacing: var(--gl-tracking-display);
  line-height: 1.1;
  overflow-wrap: anywhere;
}

h1 {
  font-size: clamp(1.75rem, 3.4vw, 2.85rem);
  max-width: 22ch;
}

h2 { font-size: clamp(1.4rem, 2.4vw, 2rem); }
h3 { font-size: clamp(1.02rem, 1.6vw, 1.18rem); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.25rem;
  font-family: var(--gl-font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--gl-radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--gl-duration) var(--gl-ease), box-shadow var(--gl-duration) var(--gl-ease);
}

.button-primary {
  color: var(--gl-accent-ink);
  background: linear-gradient(104deg, var(--gl-accent-alt) 0%, var(--gl-accent) 52%, #624696 100%);
  border-color: rgba(123, 91, 184, 0.4);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 0 24px var(--gl-glow);
  transform: translateY(-1px);
}

.button-secondary {
  color: var(--gl-ink);
  background: var(--gl-glass);
  border-color: var(--gl-line-strong);
  backdrop-filter: blur(8px);
}

.geo-line {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gl-ink-subtle);
  padding-top: 0.5rem;
  border-top: 1px solid var(--gl-line);
  max-width: 12rem;
}

.hero-visual-wrap {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.hero-visual {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  max-height: var(--hero-max-h-mobile);
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--gl-radius-lg);
  border: 1px solid var(--gl-line-strong);
  background:
    radial-gradient(ellipse 80% 55% at 50% 100%, rgba(123, 91, 184, 0.16), transparent 68%),
    linear-gradient(165deg, #3d3550 0%, #2a2730 55%, #1f1c26 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  contain: layout paint size;
  isolation: isolate;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(115deg, rgba(157, 127, 212, 0.14) 0%, transparent 46%),
    repeating-linear-gradient(30deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 2.4rem),
    repeating-linear-gradient(-30deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 2.4rem);
  z-index: 1;
}

/* Sections */
.section {
  border-bottom: 1px solid var(--gl-line);
}

.section:nth-of-type(even) {
  background: var(--gl-bg-alt);
}

.section-heading {
  margin-bottom: 1.75rem;
  max-width: 52rem;
}

.section-kicker {
  display: block;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gl-accent);
  margin-bottom: 0.6rem;
}

.section-heading p,
.lead,
.chapter p,
.card p,
.geo-chip span,
.fact-disclaimer,
.tripscan-disclaimer,
.footer-grid p {
  color: var(--gl-ink-muted);
}

/* Guide — isometric cutaway chapters */
.guide-body {
  display: grid;
  gap: 1.25rem;
}

.chapter {
  padding: 1.35rem 1.5rem;
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--gl-radius-lg);
  border-left: 3px solid var(--gl-accent);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  backdrop-filter: blur(8px);
  box-shadow: 0 12px 28px rgba(42, 39, 48, 0.05);
}

.chapter ul {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.92rem;
}

.chapter li + li { margin-top: 0.4rem; }

/* Process steps */
.process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.process-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding: 1.1rem 1.2rem;
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--gl-radius-lg);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.step-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--gl-radius);
  background: linear-gradient(135deg, rgba(123, 91, 184, 0.18), rgba(123, 91, 184, 0.06));
  border: 1px solid var(--gl-line);
}

.step-icon[data-icon="forest"]::after { content: "▲"; display: grid; place-items: center; height: 100%; font-size: 0.75rem; color: var(--gl-accent); }
.step-icon[data-icon="compass"]::after { content: "◎"; display: grid; place-items: center; height: 100%; font-size: 0.85rem; color: var(--gl-accent); }
.step-icon[data-icon="backpack"]::after { content: "◫"; display: grid; place-items: center; height: 100%; font-size: 0.75rem; color: var(--gl-accent); }

/* Stats — proof band */
.component-stats .section-inner {
  padding-block: clamp(2rem, 4vw, 3rem);
}

.component-stats h2 {
  max-width: 40rem;
}

.fact-disclaimer {
  font-size: 0.82rem;
  margin: 0 0 1.25rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.stat {
  padding: 1.1rem;
  background: var(--gl-surface-raised);
  border: 1px solid var(--gl-line);
  border-radius: var(--gl-radius-lg);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.stat strong {
  font-family: var(--gl-font-display);
  font-size: 1.65rem;
  font-weight: var(--gl-weight-display);
  letter-spacing: var(--gl-tracking-display);
  color: var(--gl-accent);
  line-height: 1;
}

.stat span {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gl-ink);
}

.stat p {
  margin: 0;
  font-size: 0.84rem;
}

/* Geography */
.geo-chips {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.geo-chip {
  padding: 1rem;
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--gl-radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.geo-chip strong {
  font-size: 0.88rem;
  font-weight: 600;
}

.geo-chip span { font-size: 0.84rem; }

/* Benefits cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.card {
  padding: 1.15rem;
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--gl-radius-lg);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.card-icon {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: rgba(123, 91, 184, 0.12);
  border: 1px solid var(--gl-line);
}

.card-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gl-accent);
}

.card small {
  font-size: 0.75rem;
  color: var(--gl-ink-subtle);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 0.65rem;
}

.faq-list details {
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--gl-radius);
  padding: 0.85rem 1rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
}

.faq-list p {
  margin: 0.65rem 0 0;
  font-size: 0.92rem;
  color: var(--gl-ink-muted);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.35rem;
  background: var(--gl-surface-raised);
  border: 1px solid var(--gl-line);
  border-radius: var(--gl-radius-lg);
  backdrop-filter: blur(12px);
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
}

.contact-form label span {
  font-size: 0.82rem;
  font-weight: 600;
}

.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font: inherit;
  border: 1px solid var(--gl-line-strong);
  border-radius: var(--gl-radius);
  background: rgba(255, 255, 255, 0.85);
  color: var(--gl-ink);
}

.contact-form textarea {
  min-height: 5.5rem;
  resize: vertical;
}

.form-message {
  margin: 0;
  font-size: 0.88rem;
  color: var(--gl-accent);
}

/* Footer */
.site-footer {
  background: linear-gradient(180deg, var(--gl-bg-alt), #d8d3cc);
  border-top: 1px solid var(--gl-line);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.footer-brand {
  font-family: var(--gl-font-display);
  font-size: 1.05rem;
  letter-spacing: var(--gl-tracking-display);
}

.footer-grid h3 {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gl-ink-subtle);
}

.footer-grid a {
  display: block;
  font-size: 0.85rem;
  color: var(--gl-ink-muted);
  text-decoration: none;
  min-height: 1.1rem;
}

.footer-coverage {
  font-size: 0.85rem;
}

/* Responsive — tablet */
@media (min-width: 768px) {
  .hero-visual {
    max-height: var(--hero-max-h-tablet);
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .stats-grid,
  .geo-chips,
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Responsive — desktop side rail */
@media (min-width: 1100px) {
  .page-shell {
    grid-template-columns: var(--rail-width) minmax(0, 1fr);
  }

  .side-rail {
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    border-bottom: none;
    border-right: 1px solid var(--gl-line);
    background: color-mix(in srgb, var(--gl-bg) 88%, var(--gl-surface));
  }

  .site-header {
    padding: 1.5rem 1.25rem;
    height: 100%;
  }

  .header-inner,
  .rail-brand-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.75rem;
    min-height: calc(100vh - 3rem);
    max-width: none;
    margin: 0;
  }

  .rail-nav {
    flex-direction: column;
    margin-left: 0;
    flex: 1;
    gap: 0.35rem;
  }

  .rail-nav a {
    padding: 0.45rem 0;
  }

  .header-cta {
    margin-top: auto;
    width: 100%;
    text-align: center;
  }

  .hero-visual {
    max-height: var(--hero-max-h-desktop);
  }

  .stats-grid,
  .geo-chips,
  .cards-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .stats-grid,
  .geo-chips,
  .cards-grid,
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero::before,
  .hero::after {
    display: none;
  }
}

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

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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