:root {
  --ink: #0A0D0C;
  --surface: #12231D;
  --surface-2: #1B2E27;
  --lime: #C9FF3D;
  --lime-dark: #7E9E2A;
  --orange: #FF7A3C;
  --orange-dark: #B65024;
  --steel: #A8B4AE;
  --steel-dim: #6E8078;
  --mist: #E8EEE9;
  --mist-2: #DDE7DF;
  --paper: #FFFFFF;
  --line: #2A3A33;
  --rail: 268px;
  --gutter: clamp(20px, 4vw, 48px);
  --slant: 0.8deg;
  --font-display: "Barlow Condensed", "Oswald", "Archivo Narrow", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

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

body {
  margin: 0;
  padding-left: var(--rail);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
svg { display: block; }
address { font-style: normal; }

h1, h2, h3, h4, h5 {
  margin: 0 0 0.45em;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 5.4vw, 64px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 28px); }
h4 { font-size: 20px; letter-spacing: 0; }

p { margin: 0 0 1.1em; max-width: 68ch; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--lime);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}
a:hover { color: var(--paper); }

ul, ol { margin: 0 0 1.1em; padding-left: 1.3em; max-width: 68ch; }
li { margin-bottom: 0.35em; }

strong { color: var(--paper); font-weight: 700; }
code, kbd, samp, .mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: 0.02em;
}

hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 32px 0;
}

::selection { background: var(--lime); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-220%);
  transition: transform 0.2s ease;
}
.skip-link:focus { transform: translateY(0); color: var(--ink); }

.scroll-meter {
  position: fixed;
  top: 0;
  left: var(--rail);
  right: 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
  background: transparent;
}
.scroll-meter-fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--lime);
  box-shadow: 0 0 12px rgba(201, 255, 61, 0.55);
  transition: width 0.12s linear;
}

/* ---------- Header / left rail ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail);
  z-index: 100;
  display: flex;
  background: transparent;
  border-right: 1px solid transparent;
  transition: background-color 0.35s ease, border-color 0.35s ease;
}
.site-header[data-scrolled] {
  background: var(--ink);
  border-right-color: var(--line);
}

.rail-inner {
  display: flex;
  flex-direction: column;
  gap: 22px;
  width: 100%;
  height: 100%;
  padding: 26px 22px 22px;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.rail-inner::-webkit-scrollbar { width: 6px; }
.rail-inner::-webkit-scrollbar-thumb { background: var(--line); }

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--paper);
  flex: 0 0 auto;
}
.brand:hover { color: var(--paper); }

.brand-badge {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.brand-copy { display: grid; gap: 3px; min-width: 0; }

.brand-name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
  color: var(--paper);
  white-space: nowrap;
}

.brand-note {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  line-height: 1.3;
  color: var(--steel-dim);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: transparent;
  color: var(--mist);
  border: 1px solid var(--line);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.nav-toggle:hover { border-color: var(--lime); color: var(--lime); }
.nav-toggle-text { line-height: 1; }
.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}
.nav-toggle-bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.site-header[data-open] .nav-toggle-bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle-bars i:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle-bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.primary-nav { display: block; min-width: 0; }

.nav-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel-dim);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  max-width: none;
}

.nav-item {
  margin: 0;
  border-top: 1px solid var(--line);
}
.nav-item:last-child { border-bottom: 1px solid var(--line); }

.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 4px 11px 0;
  color: var(--mist);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.25s ease;
}
.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--lime);
  transform: translateY(-50%);
  transition: width 0.25s ease;
}
.nav-link:hover { color: var(--paper); padding-left: 14px; }
.nav-link:hover::before { width: 8px; }

.nav-link[aria-current="page"] {
  color: var(--lime);
  font-weight: 700;
  padding-left: 14px;
}
.nav-link[aria-current="page"]::before { width: 8px; background: var(--lime); }
.nav-link[aria-current="page"] .nav-num { color: var(--orange); }

.nav-num {
  flex: 0 0 auto;
  min-width: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--steel-dim);
  transition: color 0.2s ease;
}
.nav-text { min-width: 0; }

.rail-actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.rail-mail {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.rail-mail:hover { color: var(--lime); border-color: var(--lime); }

.rail-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--steel-dim);
  max-width: none;
}

/* ---------- Layout primitives ---------- */
.wrap {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(44px, 6vw, 92px); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.slant-rule {
  height: 1px;
  background: var(--line);
  transform: skewY(calc(var(--slant) * -1));
  transform-origin: left center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
  max-width: none;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  flex: 0 0 auto;
}

.caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  line-height: 1.6;
  color: var(--steel-dim);
  max-width: 60ch;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 0;
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn--lime { background: var(--lime); color: var(--ink); border-color: var(--lime); }
.btn--lime:hover { background: var(--lime-dark); border-color: var(--lime-dark); color: var(--paper); }
.btn--orange { background: var(--orange); color: var(--ink); border-color: var(--orange); }
.btn--orange:hover { background: var(--orange-dark); border-color: var(--orange-dark); color: var(--paper); }
.btn--ghost { background: transparent; color: var(--mist); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--lime); color: var(--lime); }
.btn--block { display: flex; width: 100%; }

/* ---------- Tags / labels ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.6;
  text-transform: uppercase;
  color: var(--steel);
  white-space: nowrap;
}
.tag--lime { background: var(--lime); border-color: var(--lime); color: var(--ink); }
.tag--orange { background: var(--orange); border-color: var(--orange); color: var(--ink); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { margin: 0 0 26px; }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--steel-dim);
  max-width: none;
}
.breadcrumb-list li { margin: 0; display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb-list li + li::before { content: "/"; color: var(--line); }
.breadcrumb-list a { color: var(--steel); text-decoration: none; border-bottom: 1px solid transparent; }
.breadcrumb-list a:hover { color: var(--lime); border-bottom-color: var(--lime); }
.breadcrumb-list [aria-current="page"] { color: var(--mist); }

/* ---------- Media containers ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background:

    linear-gradient(155deg, var(--surface-2) 0%, var(--surface) 45%, var(--ink) 100%);
  border: 1px solid var(--line);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(200deg, rgba(201, 255, 61, 0.14) 0%, rgba(201, 255, 61, 0) 42%),
    linear-gradient(340deg, rgba(255, 122, 60, 0.16) 0%, rgba(255, 122, 60, 0) 46%);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--1x1 { aspect-ratio: 1 / 1; }

/* ---------- Bento panels & note cards ---------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.4vw, 28px);
}
.panel > :last-child { margin-bottom: 0; }

.note-card {
  position: relative;
  padding: 22px 22px 22px 26px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.note-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--orange);
}
.note-card--lime::before { background: var(--lime); }
.note-card--orange::before { background: var(--orange); }
.note-card > :last-child { margin-bottom: 0; }

/* ---------- Ledger table base ---------- */
.ledger {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
  background: var(--surface);
  border: 1px solid var(--line);
}
.ledger caption {
  caption-side: top;
  padding: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: left;
  color: var(--steel-dim);
}
.ledger th,
.ledger td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.ledger thead th {
  background: var(--surface-2);
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.ledger tbody tr:last-child td { border-bottom: 0; }
.ledger tbody tr:hover td { background: var(--surface-2); }
.ledger td.nav-num,
.ledger td .mono { color: var(--lime); }

/* ---------- Reveal ---------- */
[data-reveal] {
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 0.7, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-pending { opacity: 0; transform: translateY(12px); }
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: var(--ink);
  border-top: 1px solid var(--line);
  padding: clamp(40px, 5vw, 72px) var(--gutter) 0;
  margin-top: clamp(40px, 6vw, 84px);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(320px, 46%);
  height: 2px;
  background: var(--lime);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(220px, 1.05fr) minmax(0, 1.5fr) minmax(220px, 1fr);
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: clamp(28px, 3.5vw, 44px);
  border-bottom: 1px solid var(--line);
}

.footer-brand { display: grid; gap: 16px; align-content: start; }
.brand--footer { margin-bottom: 2px; }

.footer-intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
  max-width: 34ch;
}

.footer-note {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--orange);
  font-size: 12px;
  line-height: 1.7;
  color: var(--steel-dim);
  max-width: 34ch;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-col { min-width: 0; }

.footer-col-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel-dim);
  line-height: 1.4;
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: none;
}
.footer-list li { margin: 0; }
.footer-list a {
  display: inline-block;
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-list a:hover { color: var(--lime); border-bottom-color: var(--lime); }

.footer-contact { min-width: 0; }

.footer-dl { margin: 0; display: grid; gap: 14px; }
.footer-dl-row { display: grid; gap: 3px; }
.footer-dl dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-dim);
}
.footer-dl dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  padding: 20px 0 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel-dim);
}
.footer-base p { margin: 0; max-width: none; }
.footer-sign { color: var(--steel-dim); }

/* ---------- Tablet ---------- */
@media (max-width: 1279px) {
  :root { --rail: 236px; }
}

@media (max-width: 1023px) {
  .footer-top { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* ---------- Mobile ---------- */
@media (max-width: 979px) {
  body { padding-left: 0; padding-top: 76px; }

  .scroll-meter { left: 0; }

  .site-header {
    right: 0;
    bottom: auto;
    width: auto;
    height: auto;
    display: block;
    background: rgba(10, 13, 12, 0.96);
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .site-header[data-scrolled] { background: rgba(10, 13, 12, 0.99); }

  .rail-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand toggle"
      "nav nav"
      "actions actions";
    align-items: center;
    gap: 0 14px;
    height: auto;
    padding: 0 18px;
    overflow: visible;
  }

  .brand { grid-area: brand; padding: 13px 0; }
  .brand-note { display: none; }
  .brand-badge { width: 36px; height: 36px; font-size: 21px; }
  .brand-name { font-size: 17px; }

  .nav-toggle { grid-area: toggle; display: inline-flex; }

  .primary-nav {
    grid-area: nav;
    display: none;
    padding: 4px 0 16px;
    border-top: 1px solid var(--line);
  }
  .site-header[data-open] .primary-nav {
    display: block;
    animation: drawer-down 0.22s ease both;
  }

  .nav-label { margin: 12px 0 8px; }
  .nav-link { padding: 12px 4px 12px 0; font-size: 15px; }

  .rail-actions {
    grid-area: actions;
    display: none;
    margin-top: 0;
    padding: 16px 0 20px;
    border-top: 1px solid var(--line);
  }
  .site-header[data-open] .rail-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: drawer-down 0.26s ease both;
  }
  .rail-meta { display: none; }

  @keyframes drawer-down {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: none; }
  }
}

@media (max-width: 639px) {
  body { font-size: 15px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .footer-base { flex-direction: column; align-items: flex-start; }
  .btn { padding: 12px 18px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal],
  [data-reveal].is-pending { opacity: 1 !important; transform: none !important; }
  .scroll-meter-fill { transition: none !important; }
}