/* ============ 01. RESET ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul[class], ol[class] { list-style: none; padding: 0; margin: 0; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; }

/* ============ 02. TOKENS ============ */
:root {
  --deep: #0E2A22;
  --char: #121417;
  --paper: #F3EDE2;
  --paper-2: #E5DCCB;
  --lime: #C6FF3D;
  --orange: #FF6A2B;
  --steel: #6E8CA0;
  --slate: #2A3B47;
  --ink: #1B1F1D;
  --note: #9AA3A8;

  --font-display: 'Barlow Condensed', 'Oswald', 'Source Han Sans SC Heavy', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'Roboto Mono', ui-monospace, 'Courier New', monospace;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --pad: clamp(20px, 8vw, 118px);
  --maxw: 1440px;
  --rule: 1px solid rgba(27, 31, 29, .16);
  --rule-dark: 1px solid rgba(243, 237, 226, .16);
  --ease: cubic-bezier(.3, 0, .2, 1);
  --head-h: 76px;
}

/* ============ 03. BASE TYPOGRAPHY ============ */
html, body { min-height: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
p { max-width: 38em; }
strong { font-weight: 700; }
:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}
::selection { background: var(--lime); color: var(--deep); }

.display-1, .display-2, .display-3, .display-4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: .94;
  margin: 0;
}
.display-1 { font-size: clamp(42px, 6vw, 84px); }
.display-2 { font-size: clamp(32px, 4vw, 56px); }
.display-3 { font-size: clamp(24px, 2.6vw, 40px); }
.display-4 { font-size: clamp(19px, 1.8vw, 28px); line-height: 1.1; }

.num, .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--steel);
}
.kicker::before { content: ""; width: 22px; height: 2px; background: var(--orange); }
.on-dark { background: var(--deep); color: var(--paper); }
.on-dark .kicker { color: rgba(243, 237, 226, .8); }
.on-dark .kicker::before { background: var(--lime); }
.on-dark p { color: rgba(243, 237, 226, .82); }

/* ============ 04. LAYOUT ============ */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.section { padding-block: clamp(48px, 7vw, 104px); }
.section--tight { padding-block: clamp(30px, 4vw, 60px); }
.section-head { display: grid; gap: 14px; margin-bottom: clamp(24px, 3vw, 44px); }
.section-head__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .2em;
  color: var(--steel);
}
.on-dark .section-head__num { color: rgba(243, 237, 226, .6); }

/* ============ 05. BUTTONS & CHIPS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .03em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 0;
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  transition: background-color .12s ease, color .12s ease, border-color .12s ease;
}
.btn:hover { background: var(--deep); }
.btn--lime { background: var(--lime); color: var(--deep); border-color: var(--lime); }
.btn--lime:hover { background: #d8ff78; border-color: #d8ff78; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--orange); }
.btn--ghost:hover { background: var(--orange); color: #1a0b03; }
.btn--on-dark { background: transparent; color: var(--paper); border-color: rgba(243, 237, 226, .45); }
.btn--on-dark:hover { background: var(--lime); color: var(--deep); border-color: var(--lime); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  background: rgba(14, 42, 34, .08);
  color: var(--deep);
  border: 1px solid rgba(14, 42, 34, .2);
  border-radius: 0;
}
.chip--lime { background: var(--lime); color: var(--deep); border-color: var(--lime); }
.chip--orange { background: var(--orange); color: #1a0b03; border-color: var(--orange); }
.chip--steel { background: transparent; color: var(--slate); border-color: rgba(42, 59, 71, .4); }

/* ============ 06. BREADCRUMBS ============ */
.breadcrumbs {
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--steel);
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.breadcrumbs a { color: var(--steel); text-decoration: none; border-bottom: 1px solid transparent; transition: color .12s ease, border-color .12s ease; }
.breadcrumbs a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.breadcrumbs .sep { color: rgba(110, 140, 160, .6); }
.breadcrumbs [aria-current="page"] { color: var(--ink); }

/* ============ 07. MEDIA CONTAINERS ============ */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--slate);
  background-image:
    linear-gradient(rgba(243, 237, 226, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243, 237, 226, .05) 1px, transparent 1px);
  background-size: 100% 33.333%, 25% 100%;
  border-radius: 0;
}
.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .7s var(--ease);
}
.media--poster { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }
.media--ultrawide { aspect-ratio: 21 / 9; }
.media:hover img { transform: scale(1.02); }
.media__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(243, 237, 226, .1) 1px, transparent 1px);
  background-size: 100% 25%;
}
.media__overlay {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: linear-gradient(180deg, rgba(14, 42, 34, 0) 0%, rgba(14, 42, 34, .88) 100%);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
}
.media__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 3px 9px;
  background: var(--lime);
  color: var(--deep);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
}

/* ============ 08. SIDE RAIL ============ */
.rail {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  max-height: 60vh;
  padding-block: 10px;
  background: var(--char);
  z-index: 90;
  overflow: hidden;
  display: none;
  transition: width .2s var(--ease);
}
.rail:hover, .rail:focus-within { width: 168px; }
.rail__list { display: grid; gap: 2px; }
.rail__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  color: rgba(243, 237, 226, .6);
  text-decoration: none;
  border-left: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  white-space: nowrap;
  transition: color .12s ease, border-color .12s ease, transform .12s var(--ease);
}
.rail__item:hover { color: var(--paper); }
.rail__item.is-active { color: var(--lime); border-left-color: var(--orange); transform: translateX(0); }
.rail__label { opacity: 0; transition: opacity .16s ease; }
.rail:hover .rail__label, .rail:focus-within .rail__label { opacity: 1; }
@media (min-width: 1200px) { .rail { display: block; } }

/* ============ 09. HEADER ============ */
.skip-link {
  position: fixed;
  left: 16px;
  top: -90px;
  z-index: 300;
  padding: 11px 20px;
  background: var(--lime);
  color: var(--deep);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  transition: top .16s var(--ease);
}
.skip-link:focus { top: 14px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: var(--paper);
}

.header-top {
  background: var(--char);
  color: var(--paper);
  overflow: hidden;
  max-height: 72px;
  transition: max-height .25s var(--ease), opacity .2s ease;
}
.site-header[data-stuck] .header-top { max-height: 0; opacity: 0; }
.header-top__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  padding-block: 11px;
}
.header-top__brand { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; max-width: none; }
.header-top__label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--lime);
}
.header-top__tagline { font-size: 12.5px; letter-spacing: .03em; color: rgba(243, 237, 226, .7); }
.header-top__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .02em;
  color: rgba(243, 237, 226, .68);
}
.header-top__contact { white-space: nowrap; }
.top-link {
  color: var(--lime);
  text-decoration: none;
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(198, 255, 61, .45);
  transition: border-color .12s ease, color .12s ease;
}
.top-link:hover { border-bottom-color: var(--lime); }

.header-main {
  position: relative;
  background: var(--paper);
  border-bottom: var(--rule);
}
.header-main__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: var(--head-h);
  transition: min-height .22s var(--ease);
}
.site-header[data-stuck] .header-main__inner { min-height: 56px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
  text-decoration: none;
  color: var(--ink);
}
.brand__glyph { position: relative; flex: none; width: 26px; height: 26px; background: var(--lime); }
.brand__glyph::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  background: var(--char);
  transform: translate(-50%, -50%);
}
.brand__name {
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: .02em;
}
.brand__sub {
  padding-left: 12px;
  border-left: 1px solid rgba(27, 31, 29, .22);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--steel);
}

.site-nav { display: block; }
.site-nav__list { display: flex; align-items: center; gap: 2px; }
.site-nav__link {
  display: inline-block;
  padding: 11px 12px;
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .12s ease, border-color .12s ease, background-color .12s ease;
}
.site-nav__link:hover { background: rgba(198, 255, 61, .22); border-bottom-color: var(--lime); }
.site-nav__link[aria-current="page"] {
  font-weight: 700;
  border-bottom-color: var(--lime);
  box-shadow: 0 2px 0 0 rgba(27, 31, 29, .55);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  background: transparent;
  border: 1px solid rgba(27, 31, 29, .3);
  border-radius: 0;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  cursor: pointer;
  transition: border-color .12s ease, background-color .12s ease;
}
.nav-toggle:hover { border-color: var(--orange); }
.nav-toggle__bars { position: relative; display: block; width: 18px; height: 2px; background: var(--ink); transition: background-color .16s ease; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--ink);
  transition: transform .2s var(--ease), top .2s var(--ease);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.site-header[data-open] .nav-toggle__bars { background: transparent; }
.site-header[data-open] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

.nav-cta {
  flex: none;
  padding: 10px 16px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
  color: var(--ink);
  text-decoration: none;
  background: transparent;
  border: 1px solid var(--orange);
  transition: background-color .12s ease, color .12s ease;
}
.nav-cta:hover { background: var(--orange); color: #1a0b03; }

.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 200; pointer-events: none; }
.progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--lime) 0%, var(--orange) 100%);
  transition: transform .1s linear;
}

/* ============ 10. FOOTER ============ */
.site-footer {
  background: var(--char);
  color: var(--paper);
  border-top: 2px solid transparent;
}
.site-footer::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--lime) 0%, var(--orange) 55%, var(--slate) 100%);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.25fr 1.25fr;
  gap: 40px 46px;
  padding-block: clamp(44px, 5vw, 68px) clamp(32px, 4vw, 52px);
}
.footer-col { min-width: 0; }
.footer-brand {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: .02em;
  margin-bottom: 14px;
  color: var(--paper);
}
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(243, 237, 226, .72); max-width: 30ch; }
.footer-icp {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--steel);
}
.footer-heading {
  margin-bottom: 18px;
  padding-top: 12px;
  border-top: var(--rule-dark);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime);
}
.footer-list { display: grid; gap: 9px; font-size: 14px; }
.footer-list--contact { gap: 14px; }
.footer-list--legal { margin-top: 20px; padding-top: 16px; border-top: var(--rule-dark); gap: 8px; }
.footer-label {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--steel);
}
.footer-value { display: block; font-size: 13.5px; line-height: 1.7; color: rgba(243, 237, 226, .82); }
.footer-link {
  color: rgba(243, 237, 226, .82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .12s ease, border-color .12s ease;
}
.footer-link:hover { color: var(--lime); border-bottom-color: var(--lime); }
.footer-note { margin-top: 16px; font-size: 12.5px; line-height: 1.7; color: rgba(243, 237, 226, .62); max-width: 34ch; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 20px 28px;
  border-top: var(--rule-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: rgba(243, 237, 226, .62);
}
.footer-copy { max-width: none; }
.footer-sync { max-width: none; color: var(--orange); }

/* ============ 11. MOTION PROTOCOL ============ */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
}
.js-reveal [data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
  transition: opacity .32s ease, transform .32s var(--ease);
}

/* ============ 12. RESPONSIVE ============ */
@media (max-width: 1180px) {
  .site-nav__link { padding: 11px 9px; font-size: 14px; }
  .brand__sub { display: none; }
}
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px 40px; }
}
@media (max-width: 900px) {
  .header-top { max-height: 96px; }
  .header-top__inner { padding-block: 10px; }
  .header-top__tagline { display: none; }
  .brand { margin-right: 0; }
  .brand__name { font-size: 21px; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .nav-cta { order: 2; }
  .nav-toggle { order: 3; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    background: var(--paper);
    border-bottom: var(--rule);
    box-shadow: 0 20px 34px -22px rgba(18, 20, 23, .55);
    z-index: 130;
  }
  .site-header[data-open] .site-nav { display: block; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__link {
    display: block;
    padding: 15px var(--pad);
    font-size: 15px;
    border-bottom: var(--rule);
    border-left: 3px solid transparent;
  }
  .site-nav__link:hover { border-bottom-color: rgba(27, 31, 29, .16); border-left-color: var(--lime); }
  .site-nav__link[aria-current="page"] {
    box-shadow: none;
    border-bottom-color: rgba(27, 31, 29, .16);
    border-left-color: var(--lime);
    background: rgba(198, 255, 61, .24);
  }
  .site-nav__list li:last-child .site-nav__link { border-bottom: none; }
  .rail { display: none !important; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .header-top__meta { gap: 4px 14px; }
  .header-top__contact { font-size: 11px; }
}
@media (max-width: 560px) {
  .nav-cta { display: none; }
  .header-top { max-height: 108px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js-reveal [data-reveal] { opacity: 1; transform: none; }
  .media:hover img { transform: none; }
}