/* ===== RESET & VARIABLES ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  font-size: 16px; line-height: 1.6; color: #1A1A1A; background: #F5F0E8;
  display: flex; flex-direction: column; min-height: 100vh;
}
:root {
  --color-primary: #2B5E3B; --color-primary-variant: #1F472C;
  --color-accent: #E87A1E; --color-accent-variant: #C46514;
  --color-neutral-dark: #3A3A3A; --color-neutral-light: #F5F0E8;
  --color-surface: #FFFFFF; --color-metal-gray: #8A8D91;
  --color-text-primary: #1A1A1A; --color-text-on-dark: #F5F0E8;
  --color-background-dark: #1F472C;
  --font-heading: 700 1.75em/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-body: 400 1em/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-caption: 300 0.75em/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-data: "Courier New", monospace;
  --letter-spacing-heading: 0.05em; --letter-spacing-body: 0.01em;
  --rail-width: 260px; --content-max-width: 1120px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-rail: 2px 0 12px rgba(0,0,0,0.12);
  --border-print: 2px solid rgba(43,94,59,0.25);
  --transition-standard: 0.25s ease;
}
/* ===== SKIP LINK ===== */
.skip-link {
  position: absolute; top: -100%; left: 0; z-index: 9999;
  padding: 0.75em 1.5em; background: var(--color-accent); color: #fff;
  font-weight: 700; text-decoration: none; border-radius: 0 0 4px 0;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; outline: 3px solid #fff; outline-offset: -3px; }
/* ===== HEADER – BRAND RAIL ===== */
.site-header {
  position: fixed; top: 0; left: 0; width: var(--rail-width); height: 100vh;
  background: var(--color-background-dark); color: var(--color-text-on-dark);
  box-shadow: var(--shadow-rail); z-index: 800;
  display: flex; flex-direction: column;
  border-right: 3px solid var(--color-accent);
}
.brand-rail {
  display: flex; flex-direction: column; height: 100%; padding: 1.5em 1.25em;
  overflow-y: auto;
}
.brand-rail__top {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid rgba(245,240,232,0.2); padding-bottom: 1em; margin-bottom: 1em;
}
.brand-logo { display: flex; align-items: baseline; gap: 0.3em; }
.brand-logo__mark {
  font-size: 1.8em; font-weight: 900; letter-spacing: var(--letter-spacing-heading);
  color: var(--color-accent); line-height: 1;
  position: relative;
}
.brand-logo__mark::after {
  content: ""; position: absolute; right: -2px; top: 0; bottom: 0;
  width: 3px; background: var(--color-accent); transform: skewX(-15deg); opacity: 0.5;
}
.brand-logo__name {
  font-size: 1.2em; font-weight: 700; letter-spacing: var(--letter-spacing-heading);
  color: var(--color-text-on-dark);
}
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.25em; }
.nav-toggle__line { display: block; width: 26px; height: 3px; background: var(--color-text-on-dark); margin: 5px 0; border-radius: 2px; transition: var(--transition-standard); }
.brand-rail__body { display: flex; flex-direction: column; flex: 1; gap: 1em; }
.brand-tagline {
  font-size: 0.9em; font-weight: 400; letter-spacing: 0.03em;
  color: var(--color-accent); border-left: 3px solid var(--color-accent);
  padding-left: 0.75em; line-height: 1.4;
}
.brand-trust {
  font-size: 0.75em; font-weight: 300; color: rgba(245,240,232,0.7);
  background: rgba(0,0,0,0.2); padding: 0.6em 0.8em; border-radius: 3px;
  line-height: 1.5; border: 1px solid rgba(232,122,30,0.2);
}
.main-nav { flex: 1; }
.main-nav__list { list-style: none; display: flex; flex-direction: column; gap: 0.25em; }
.main-nav__link {
  display: block; padding: 0.6em 0.75em; color: var(--color-text-on-dark);
  text-decoration: none; font-weight: 600; letter-spacing: 0.03em;
  border-radius: 4px; transition: var(--transition-standard);
  border-left: 3px solid transparent;
}
.main-nav__link:hover, .main-nav__link:focus-visible {
  background: rgba(232,122,30,0.15); color: var(--color-accent);
  border-left-color: var(--color-accent);
}
.main-nav__link[aria-current="page"] {
  background: rgba(232,122,30,0.12); color: var(--color-accent);
  border-left-color: var(--color-accent); font-weight: 700;
}
.brand-rail__cta { margin-top: auto; text-align: center; }
/* ===== BUTTONS ===== */
.btn {
  display: inline-block; padding: 0.65em 1.6em; font-weight: 700;
  letter-spacing: 0.04em; text-decoration: none; border-radius: 4px;
  border: 2px solid transparent; cursor: pointer;
  transition: var(--transition-standard); font-size: 0.95em;
  line-height: 1.2; text-align: center;
}
.btn--primary {
  background: var(--color-accent); color: #fff; border-color: var(--color-accent);
}
.btn--primary:hover, .btn--primary:focus-visible {
  background: var(--color-accent-variant); border-color: var(--color-accent-variant);
}
.btn--outline {
  background: transparent; color: var(--color-primary); border-color: var(--color-primary);
}
.btn--outline:hover, .btn--outline:focus-visible {
  background: var(--color-primary); color: #fff;
}
/* ===== MAIN CONTENT ===== */
#main-content {
  margin-left: var(--rail-width); flex: 1; width: calc(100% - var(--rail-width));
  padding: 2em 2.5em; max-width: var(--content-max-width);
}
/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-background-dark); color: var(--color-text-on-dark);
  padding: 2.5em 2em 1.5em; margin-left: var(--rail-width);
  border-top: 3px solid var(--color-accent);
}
.site-footer__inner {
  max-width: var(--content-max-width); margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 2fr; gap: 2em;
}
.site-footer__name { font-size: 1.3em; font-weight: 700; letter-spacing: var(--letter-spacing-heading); color: var(--color-accent); margin-bottom: 0.4em; }
.site-footer__about { font-size: 0.85em; color: rgba(245,240,232,0.7); line-height: 1.5; }
.footer-link {
  display: block; color: rgba(245,240,232,0.8); text-decoration: none;
  font-size: 0.9em; padding: 0.3em 0; transition: var(--transition-standard);
  border-left: 2px solid transparent; padding-left: 0.6em;
}
.footer-link:hover, .footer-link:focus-visible {
  color: var(--color-accent); border-left-color: var(--color-accent);
}
.footer-contact__item { font-size: 0.85em; color: rgba(245,240,232,0.7); margin-bottom: 0.25em; }
.site-footer__bottom {
  grid-column: 1 / -1; display: flex; justify-content: space-between;
  align-items: center; padding-top: 1.5em; margin-top: 1.5em;
  border-top: 1px solid rgba(245,240,232,0.15); flex-wrap: wrap; gap: 0.5em;
}
.footer-icp { font-size: 0.75em; color: rgba(245,240,232,0.5); }
.footer-copy { font-size: 0.75em; color: rgba(245,240,232,0.5); }
/* ===== SHARED COMPONENTS ===== */
.card {
  background: var(--color-surface); border: var(--border-print);
  border-radius: 4px; padding: 1.25em 1.5em; box-shadow: var(--shadow-card);
  position: relative; transition: var(--transition-standard);
}
.card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.04); }
.card__label {
  display: inline-block; font-size: 0.7em; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--color-primary); color: #fff; padding: 0.2em 0.8em;
  border-radius: 2px; margin-bottom: 0.75em;
}
.data-display {
  font-family: var(--font-data); font-size: 1.1em; color: var(--color-primary-variant);
  background: var(--color-neutral-light); padding: 0.2em 0.6em; border-radius: 2px;
  letter-spacing: 0.02em;
}
/* ===== UTILITY ===== */
.section-title {
  font-size: 1.75em; font-weight: 700; letter-spacing: var(--letter-spacing-heading);
  color: var(--color-primary-variant); border-bottom: 3px solid var(--color-accent);
  padding-bottom: 0.3em; margin-bottom: 1em;
}
.container { max-width: var(--content-max-width); margin: 0 auto; padding: 0 1em; }
/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  :root { --rail-width: 220px; }
  #main-content { padding: 1.5em 1.5em; }
  .site-footer { padding: 2em 1.5em 1.25em; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --rail-width: 0; }
  .site-header {
    position: fixed; width: 100%; height: auto; top: 0; left: 0;
    flex-direction: row; box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border-right: none; border-bottom: 3px solid var(--color-accent);
  }
  .brand-rail { padding: 0.75em 1em; flex-direction: column; width: 100%; }
  .brand-rail__top { margin-bottom: 0; border-bottom: none; padding-bottom: 0; }
  .brand-logo__mark { font-size: 1.4em; }
  .brand-logo__name { font-size: 1em; }
  .nav-toggle { display: block; }
  .brand-rail__body {
    display: none; position: absolute; top: 100%; left: 0; width: 100%;
    background: var(--color-background-dark); padding: 1em 1.25em 1.5em;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2); border-top: 1px solid rgba(245,240,232,0.1);
    max-height: calc(100vh - 60px); overflow-y: auto;
  }
  .brand-rail__body[data-open] { display: flex; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  #main-content { margin-left: 0; width: 100%; padding: 5em 1em 1.5em; }
  .site-footer { margin-left: 0; padding: 1.5em 1em 1em; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 1.25em; }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  #main-content { padding: 4.5em 0.75em 1em; }
  .card { padding: 1em; }
}
/* ===== ACCESSIBILITY & MOTION ===== */
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}
/* ===== PRINT ===== */
@media print {
  .site-header { position: static; width: 100%; height: auto; box-shadow: none; border: none; }
  .brand-rail__body { display: flex !important; }
  .nav-toggle { display: none; }
  #main-content { margin-left: 0; width: 100%; }
  .site-footer { margin-left: 0; }
}