:root {
  --ink: #0E1B2A;
  --midnight: #14263A;
  --warm: #F3EBDD;
  --paper: #FBF6EC;
  --red: #B53322;
  --red-dark: #7E2418;
  --slate: #8FA3B5;
  --gold: #B8874B;
  --green: #2F5D50;
  --rail-width: 17.5rem;
  --content-max: 86rem;
  --font-sans: "Source Han Sans SC VF", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --line-soft: rgba(143, 163, 181, 0.28);
  --line-strong: rgba(243, 235, 221, 0.24);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  padding-left: var(--rail-width);
  background: var(--ink);
  color: var(--warm);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

ul,
ol {
  margin-block: 0;
}

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

button {
  font: inherit;
}

a {
  color: inherit;
}

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

::selection {
  background: var(--red);
  color: var(--paper);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.7rem 1rem;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--red);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(calc(-100% - 1rem));
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 100;
  width: var(--rail-width);
  background: var(--ink);
  color: var(--warm);
  border-right: 1px solid var(--line-soft);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--red);
  z-index: 2;
}

.site-header::after {
  content: "";
  position: absolute;
  top: 1.1rem;
  right: -1px;
  bottom: 1.1rem;
  width: 1px;
  background-image: repeating-linear-gradient(180deg, var(--slate) 0 1px, transparent 1px 14px);
  opacity: 0.35;
  pointer-events: none;
}

.rail {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  padding: 1.35rem 1.15rem 1.2rem;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--slate) transparent;
}

.rail__mast {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-soft);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
  color: var(--paper);
  text-decoration: none;
}

.brand__mark {
  font-size: 1.32rem;
  line-height: 1.1;
  font-weight: 850;
  letter-spacing: 0.04em;
}

.brand__kicker {
  font-size: 0.72rem;
  line-height: 1.4;
  color: var(--slate);
  letter-spacing: 0.08em;
}

.brand:hover .brand__mark {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.24em;
}

.issue-badge {
  display: grid;
  grid-template-columns: auto auto;
  grid-template-areas:
    "label unit"
    "num num";
  gap: 0 0.25rem;
  min-width: 4.6rem;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--gold);
  background: rgba(184, 135, 75, 0.06);
  color: var(--gold);
  font-family: var(--font-mono);
  text-align: right;
}

.issue-badge__label {
  grid-area: label;
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  line-height: 1.2;
}

.issue-badge__unit {
  grid-area: unit;
  font-size: 0.58rem;
  line-height: 1.2;
}

.issue-badge__num {
  grid-area: num;
  font-size: 2.6rem;
  line-height: 0.92;
  letter-spacing: -0.06em;
  font-variant-numeric: tabular-nums;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 2.5rem;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  letter-spacing: 0.08em;
}

.nav-toggle__icon {
  display: inline-grid;
  gap: 3px;
  width: 1rem;
}

.nav-toggle__bar {
  display: block;
  height: 1px;
  background: currentColor;
  transform-origin: center;
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle__text {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1;
  letter-spacing: 0.14em;
}

.site-nav {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.site-nav__caption {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.4;
  letter-spacing: 0.18em;
  color: var(--slate);
  text-transform: uppercase;
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.site-nav__item {
  list-style: none;
}

.site-nav__link {
  position: relative;
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.62rem 0 0.62rem 0.05rem;
  color: var(--warm);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 163, 181, 0.18);
  transition: color 180ms ease, padding 180ms ease, border-color 180ms ease;
}

.site-nav__link::before {
  content: "";
  position: absolute;
  left: -1.15rem;
  top: 0.45rem;
  bottom: 0.45rem;
  width: 2px;
  background: transparent;
  transform: scaleY(0.2);
  transform-origin: top;
  transition: background 180ms ease, transform 180ms ease;
}

.site-nav__link:hover {
  color: var(--paper);
  padding-left: 0.35rem;
}

.site-nav__link:hover::before {
  background: var(--gold);
  transform: scaleY(1);
}

.site-nav__link[aria-current="page"] {
  color: var(--paper);
}

.site-nav__link[aria-current="page"]::before {
  background: var(--red);
  transform: scaleY(1);
}

.site-nav__num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.site-nav__label {
  min-width: 0;
  overflow-wrap: anywhere;
}

.rail__tools {
  margin-top: auto;
  display: grid;
  gap: 0.7rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
}

.rail-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--slate);
  text-decoration: none;
  font-size: 0.78rem;
  line-height: 1.4;
  letter-spacing: 0.03em;
}

.rail-link:hover {
  color: var(--paper);
}

.rail-link__label {
  min-width: 0;
}

.rail-link__meta {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  line-height: 1;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.rail__action {
  width: 100%;
}

.rail__note {
  margin: 0;
  color: var(--slate);
  font-size: 0.66rem;
  line-height: 1.5;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.7rem;
  padding: 0.65rem 1rem;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button--primary {
  background: var(--red);
  border-color: var(--red);
  color: var(--paper);
}

.button--primary:hover {
  background: var(--red-dark);
  border-color: var(--red-dark);
  color: var(--paper);
}

.button--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--warm);
}

.button--ghost:hover {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

.site-footer {
  position: relative;
  background: var(--midnight);
  color: var(--warm);
  border-top: 1px solid var(--line-soft);
  padding: clamp(2.4rem, 5vw, 4.5rem) clamp(1.1rem, 4vw, 3.5rem) 1.5rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: clamp(1.1rem, 4vw, 3.5rem);
  width: clamp(3rem, 10vw, 8rem);
  height: 3px;
  background: var(--red);
}

.footer-grid {
  width: min(100%, var(--content-max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(9rem, 0.55fr) minmax(13rem, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}

.footer-brand {
  display: grid;
  gap: 0.7rem;
  align-content: start;
}

.footer-brand__line {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.footer-brand__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  line-height: 1.4;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
}

.footer-note {
  margin: 0;
  max-width: 32rem;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--slate);
}

.footer-nav {
  display: grid;
  gap: 0.65rem;
  align-content: start;
}

.footer-nav__caption {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.4;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.footer-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.footer-nav__item {
  list-style: none;
}

.footer-nav__link {
  display: inline-block;
  color: var(--warm);
  text-decoration: none;
  font-size: 0.86rem;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.footer-nav__link:hover {
  color: var(--paper);
  border-color: var(--red);
}

.footer-contact {
  font-style: normal;
  display: grid;
  gap: 0.45rem;
  align-content: start;
}

.footer-contact__row {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  gap: 0.65rem;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--warm);
}

.footer-contact__label {
  color: var(--slate);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
  padding-top: 0.1rem;
}

.footer-meta {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1.2rem;
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--slate);
}

.footer-copy {
  margin: 0;
}

.footer-filing {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--warm);
  cursor: pointer;
  font-size: 0.72rem;
  line-height: 1.2;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.to-top:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.to-top__label {
  line-height: 1.2;
}

.to-top__icon {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1;
}

#main-content {
  display: block;
  min-height: 50vh;
}

.page-shell {
  width: min(100%, var(--content-max));
  margin-inline: auto;
  padding: clamp(1.25rem, 3.5vw, 3.5rem);
}

.content-surface {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line-soft);
}

.section {
  padding-block: clamp(2rem, 5vw, 4.5rem);
}

.container {
  width: min(100% - 2rem, 76rem);
  margin-inline: auto;
}

.rule {
  height: 1px;
  border: 0;
  background: var(--line-soft);
  margin: 0;
}

.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem 1.2rem;
  align-items: baseline;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-soft);
}

.section-head__num {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--red);
}

.section-head__title {
  font-size: clamp(1.3rem, 2.4vw, 2.2rem);
  line-height: 1.1;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.prose {
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.75;
  color: inherit;
}

.prose p + p {
  margin-top: 1rem;
}

.prose a {
  color: var(--red);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.prose strong {
  font-weight: 800;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 2rem);
}

.grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.breadcrumb {
  margin-bottom: 1.2rem;
}

.breadcrumb__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  font-size: 0.76rem;
  line-height: 1.4;
  color: var(--slate);
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 0.35rem;
  color: var(--gold);
}

.breadcrumb__link {
  color: inherit;
  text-decoration: none;
}

.breadcrumb__link:hover {
  color: var(--red);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.55rem;
  padding: 0.1rem 0.45rem;
  border: 1px solid var(--line-soft);
  background: transparent;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  line-height: 1.2;
  letter-spacing: 0.06em;
}

.anchor-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.anchor-index__link {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--line-soft);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.3;
  text-decoration: none;
  transition: color 180ms ease, background 180ms ease, border-color 180ms ease;
}

.anchor-index__link:hover,
.anchor-index__link[aria-current] {
  color: var(--paper);
  background: var(--red);
  border-color: var(--red);
}

.image-frame {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--ink);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.image-frame__img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--warm);
}

.image-frame--wide .image-frame__img {
  aspect-ratio: 21 / 9;
}

.image-frame--portrait .image-frame__img {
  aspect-ratio: 4 / 5;
}

.image-frame__caption {
  margin: 0;
  padding: 0.6rem 0.75rem;
  border-top: 1px solid var(--line-soft);
  background: var(--ink);
  color: var(--warm);
  font-size: 0.72rem;
  line-height: 1.5;
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 360ms cubic-bezier(0.22, 1, 0.36, 1), transform 360ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

html.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (max-width: 1100px) {
  :root {
    --rail-width: 16rem;
  }

  .brand__mark {
    font-size: 1.18rem;
  }

  .issue-badge__num {
    font-size: 2.2rem;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(9rem, 0.6fr);
  }

  .footer-contact {
    grid-column: 1 / -1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  body {
    padding-left: 0;
  }

  .site-header {
    position: sticky;
    inset: auto;
    top: 0;
    width: 100%;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .site-header::before {
    height: 3px;
  }

  .site-header::after {
    display: none;
  }

  .rail {
    height: auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "mast toggle"
      "nav nav"
      "tools tools";
    gap: 0.55rem 1rem;
    padding: 0.75rem 1rem 0.9rem;
    overflow: visible;
  }

  .rail__mast {
    grid-area: mast;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
    padding: 0;
    border-bottom: 0;
  }

  .brand {
    flex-direction: row;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.35rem;
    min-width: 0;
  }

  .brand__mark {
    font-size: 1.16rem;
  }

  .brand__kicker {
    display: none;
  }

  .issue-badge {
    min-width: 3.8rem;
    padding: 0.22rem 0.4rem;
  }

  .issue-badge__num {
    font-size: 1.15rem;
  }

  .issue-badge__label,
  .issue-badge__unit {
    font-size: 0.48rem;
  }

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

  .site-header[data-open="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }

  .site-header[data-open="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .site-header[data-open="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .site-nav {
    grid-area: nav;
    display: none;
    flex: initial;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    padding-top: 0.7rem;
    border-top: 1px solid var(--line-soft);
  }

  .site-header[data-open="true"] .site-nav {
    display: block;
  }

  .site-nav__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 1.1rem;
  }

  .site-nav__link {
    grid-template-columns: 1.8rem minmax(0, 1fr);
    padding: 0.52rem 0;
  }

  .site-nav__link::before {
    left: -1rem;
  }

  .site-nav__num {
    font-size: 0.62rem;
  }

  .rail__tools {
    grid-area: tools;
    display: none;
    margin-top: 0;
    padding-top: 0.7rem;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.5rem 0.75rem;
  }

  .site-header[data-open="true"] .rail__tools {
    display: grid;
  }

  .rail__action {
    width: auto;
    min-height: 2.45rem;
    padding: 0.5rem 0.85rem;
  }

  .rail__note {
    display: none;
  }

  .rail-link {
    font-size: 0.74rem;
  }
}

@media (max-width: 680px) {
  .site-nav__list {
    grid-template-columns: 1fr;
  }

  .rail__tools {
    grid-template-columns: 1fr;
  }

  .rail__action {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-contact {
    grid-template-columns: 1fr;
  }

  .footer-meta {
    align-items: flex-start;
  }

  .grid--two {
    grid-template-columns: 1fr;
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .to-top {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 520px) {
  .issue-badge__label {
    display: none;
  }

  .rail {
    padding-inline: 0.8rem;
  }

  .site-nav__link {
    grid-template-columns: 1.6rem minmax(0, 1fr);
  }

  .footer-contact__row {
    grid-template-columns: 3.1rem minmax(0, 1fr);
  }

  .footer-copy,
  .footer-filing {
    width: 100%;
  }
}

@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;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }

  html.js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .button:hover,
  .site-nav__link:hover,
  .to-top:hover {
    transform: none;
  }
}