:root {
  --color-surface: #f5f4f4;
  --color-surface-alt: #edebeb;
  --color-surface-deep: #e1dfde;
  --color-ink: #4f4140;
  --color-ink-soft: #7b6766;
  --color-ink-muted: #8a7775;
  --color-line: #d7d4d4;
  --color-primary: #c84437;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #efdbda;
  --color-accent: #cc4133;
  --color-accent-ink: #ffffff;
  --color-highlight: #eed4d1;
  --color-focus: #cc3324;
  --color-contrast-surface: #271817;
  --color-contrast-ink: #e7e4e4;
  --color-contrast-line: #514544;
  --color-contrast-accent: #d55f53;
  --overlay-scrim: linear-gradient(180deg, rgba(39, 24, 23, 0.35) 0%, rgba(39, 24, 23, 0.72) 55%, rgba(39, 24, 23, 0.92) 100%);
  --font-heading: "Kaiti SC", STKaiti, KaiTi, "Songti SC", serif;
  --font-body: "Songti SC", "PingFang SC", "Microsoft YaHei", serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 12.9px;
  --text-sm: 15.5px;
  --text-base: 17px;
  --text-lg: 20.4px;
  --text-xl: 24.5px;
  --text-2xl: 29.4px;
  --text-3xl: 35.3px;
  --text-4xl: 42.3px;
  --text-display: clamp(34px, 7.0vw, 90px);
  --text-figure: clamp(29px, 5.1vw, 65px);
  --weight-heading: 438;
  --weight-body: 400;
  --leading-body: 2.0;
  --leading-heading: 1.24;
  --tracking-heading: 0.037em;
  --radius-sm: 0px;
  --radius-md: 1px;
  --radius-lg: 2px;
  --radius-pill: 2px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1080px;
  --measure: 60ch;
  --gutter: 16px;
  --section-y: 114px;
  --section-y-lg: 160px;
}

/* ========== 1. 基础重置 ========== */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-4);
}
body {
  margin: 0;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
ul[class], ol[class] { list-style: none; margin: 0; padding: 0; }
p, figure, blockquote, dl, dd, h1, h2, h3, h4, h5, h6 { margin: 0; }
hr { border: 0; }
:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
html.nav-open { overflow: hidden; }

/* ========== 2. 中文排版 ========== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}
h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); font-family: var(--font-body); letter-spacing: 0; }
h5, h6 { font-size: var(--text-sm); font-family: var(--font-body); letter-spacing: 0.04em; }

.display {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  line-height: 1.06;
  letter-spacing: var(--tracking-heading);
}
.display--figure { font-size: var(--text-figure); line-height: 1.1; }

.lede {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.85;
  color: var(--color-ink-soft);
}
.eyebrow {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  color: var(--color-ink-muted);
}
.num, time, [data-num] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.prose { max-width: var(--measure); }
.prose > * + * { margin-top: var(--space-3); }
.prose h2 { margin-top: var(--space-8); font-size: var(--text-2xl); }
.prose h3 { margin-top: var(--space-6); }
.prose ul, .prose ol { padding-left: var(--space-4); }
.prose li + li { margin-top: var(--space-1); }
.prose a { color: var(--color-ink); border-bottom: var(--border-thin) solid var(--color-primary); }
.prose a:hover { color: var(--color-accent); }
.prose blockquote {
  padding-left: var(--space-3);
  color: var(--color-ink-soft);
  font-family: var(--font-heading);
  letter-spacing: 0.02em;
}

/* ========== 3. 布局骨架 ========== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
}
.section { padding-block: var(--section-y); }
.section--wide { padding-block: var(--section-y-lg); }
.section--tight { padding-block: var(--space-8); }
.section--wash { background-color: var(--color-surface-alt); }
.section--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.section--deep h1, .section--deep h2, .section--deep h3, .section--deep h4 { color: var(--color-contrast-ink); }
.section--deep .lede, .section--deep .prose { color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent); }
.section--deep .eyebrow, .section--deep .figure__label { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.section--deep .prose a { color: var(--color-contrast-accent); border-bottom-color: var(--color-contrast-accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}
.grid--auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }
.stack > * + * { margin-top: var(--space-3); }
.rule { height: var(--border-thin); background-color: var(--color-line); }
.rule--space { margin-block: var(--space-8); }
.section--deep .rule { background-color: var(--color-contrast-line); }

/* ========== 4. 通用组件 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 44px;
  padding: 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink);
  background-color: transparent;
  border: var(--border-thin) solid var(--color-ink-muted);
  border-radius: var(--radius-sm);
  transition: color 0.24s ease-out, border-color 0.24s ease-out, background-color 0.24s ease-out;
}
.btn:hover { border-color: var(--color-ink); }
.btn--primary {
  color: var(--color-primary-ink);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--primary:hover { background-color: var(--color-accent); border-color: var(--color-accent); }
.btn--quiet { padding-inline: 0; border-color: transparent; }
.btn--quiet:hover { color: var(--color-accent); border-color: transparent; }
.section--deep .btn { color: var(--color-contrast-ink); border-color: var(--color-contrast-line); }
.section--deep .btn--primary { color: var(--color-primary-ink); border-color: var(--color-primary); }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.06em;
}
.crumbs__item { border-bottom: var(--border-thin) solid transparent; }
.crumbs__item:hover { color: var(--color-ink); border-bottom-color: var(--color-primary); }
.crumbs__item[aria-current="page"] { color: var(--color-ink); }
.crumbs__sep { color: var(--color-line); }
.section--deep .crumbs { color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent); }
.section--deep .crumbs__sep { color: var(--color-contrast-line); }

.tag {
  display: inline-block;
  padding: 2px var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-soft);
  background-color: var(--color-surface-deep);
  border-radius: var(--radius-md);
}
.tag--primary { color: var(--color-accent); background-color: var(--color-primary-soft); }
.tag--muted { color: var(--color-ink-muted); background-color: transparent; padding-inline: 0; }
.section--deep .tag { color: var(--color-contrast-ink); background-color: color-mix(in srgb, var(--color-contrast-ink) 12%, transparent); }

.figure { display: block; }
.figure__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}
.figure__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}
.figure--key::after {
  content: "";
  display: block;
  width: 40px;
  height: calc(var(--border-thin) * 2);
  margin-top: var(--space-2);
  background-color: var(--color-primary);
}
.section--deep .figure__num { color: var(--color-contrast-ink); }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}
.data-table th {
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.14em;
  text-align: left;
  color: var(--color-ink-muted);
  border-bottom: var(--border-thin) solid var(--color-line);
}
.data-table td {
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  color: var(--color-ink);
}
.data-table tbody tr:nth-child(even) { background-color: color-mix(in srgb, var(--color-surface-deep) 52%, transparent); }
.data-table tr.is-current, .data-table tr[aria-selected="true"] { background-color: var(--color-highlight); }
.data-table .num { text-align: right; }
.section--deep .data-table th { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.section--deep .data-table td { color: var(--color-contrast-ink); }
.section--deep .data-table th,
.section--deep .data-table td { border-bottom-color: var(--color-contrast-line); }
.section--deep .data-table tbody tr:nth-child(even) { background-color: color-mix(in srgb, var(--color-contrast-ink) 7%, transparent); }
.section--deep .data-table tr.is-current { background-color: color-mix(in srgb, var(--color-contrast-accent) 22%, transparent); }

.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-deep);
}
.media img, .media__img { width: 100%; height: 100%; object-fit: cover; }
.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }
.media__scrim { position: absolute; inset: 0; background-image: var(--overlay-scrim); pointer-events: none; }
.media__caption {
  position: absolute;
  left: var(--space-2);
  right: var(--space-2);
  bottom: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-contrast-ink);
}
.media__caption--below {
  position: static;
  margin-top: var(--space-1);
  color: var(--color-ink-muted);
}
.section--deep .media { background-color: var(--color-contrast-line); }

.pitch-lines { position: relative; }
.pitch-lines::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.2;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--color-ink) 34%, transparent) 0 var(--border-thin), transparent var(--border-thin) 100%),
    linear-gradient(to bottom, color-mix(in srgb, var(--color-ink) 24%, transparent) 0 var(--border-thin), transparent var(--border-thin) 100%);
  background-size: 25% 100%, 100% 25%;
}
.section--deep .pitch-lines::before {
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--color-contrast-ink) 26%, transparent) 0 var(--border-thin), transparent var(--border-thin) 100%),
    linear-gradient(to bottom, color-mix(in srgb, var(--color-contrast-ink) 18%, transparent) 0 var(--border-thin), transparent var(--border-thin) 100%);
}

.expander { border-top: var(--border-thin) solid var(--color-line); }
.expander__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  min-height: 44px;
  padding: var(--space-2) 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-heading);
  text-align: left;
  color: var(--color-ink);
  transition: color 0.24s ease-out;
}
.expander__trigger:hover { color: var(--color-accent); }
.expander__mark { position: relative; flex: none; width: 12px; height: 12px; }
.expander__mark::before,
.expander__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: var(--border-thin);
  background-color: var(--color-ink-muted);
  transition: transform 0.24s ease-out, opacity 0.24s ease-out;
}
.expander__mark::after { transform: rotate(90deg); }
.expander__trigger[aria-expanded="true"] .expander__mark::after { transform: rotate(0deg); opacity: 0; }
.expander__panel { padding-bottom: var(--space-3); }
.expander__panel[hidden] { display: none; }
.expander__panel.is-opening { animation: ink-in 0.24s ease-out both; }
@keyframes ink-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}
.section--deep .expander { border-top-color: var(--color-contrast-line); }

html[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.44s ease-out, transform 0.44s ease-out;
}
html[data-js="on"] [data-reveal].is-visible { opacity: 1; transform: none; }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: calc(var(--border-thin) * 2);
  z-index: 80;
  pointer-events: none;
  background-color: transparent;
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background-color: var(--color-primary);
  transition: width 0.12s linear;
}

.skip-link {
  position: fixed;
  top: calc(var(--space-2) * -3);
  left: var(--space-3);
  z-index: 95;
  padding: var(--space-1) var(--space-3);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  background-color: var(--color-contrast-surface);
  transition: top 0.2s ease-out;
}
.skip-link:focus { top: 0; }

/* ========== 5. 头部：侧边轨道导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 216px;
  z-index: 60;
  background-color: var(--color-surface);
  background-image: linear-gradient(
    90deg,
    var(--color-surface) 0%,
    var(--color-surface) 76%,
    color-mix(in srgb, var(--color-surface-deep) 48%, var(--color-surface)) 100%
  );
}
.site-header__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  height: 100%;
  padding: var(--space-6) var(--space-3) var(--space-4);
  overflow-y: auto;
}
.brand { display: block; }
.brand__name {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.2;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}
.brand__line {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.8;
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}
.brand__sub {
  display: block;
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.rail-nav__list { display: flex; flex-direction: column; gap: var(--space-1); }
.rail-nav__link {
  position: relative;
  display: block;
  min-height: 44px;
  padding: var(--space-1) 0;
  font-size: var(--text-sm);
  line-height: 1.9;
  color: var(--color-ink-soft);
  transition: color 0.24s ease-out;
}
.rail-nav__link::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 20px;
  height: calc(var(--border-thin) * 2);
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s ease-out;
}
.rail-nav__link:hover,
.rail-nav__link:focus-visible { color: var(--color-ink); }
.rail-nav__link:hover::before,
.rail-nav__link:focus-visible::before { transform: scaleX(1); }
.rail-nav__link[aria-current="page"] {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-ink);
}
.rail-nav__link[aria-current="page"]::before { transform: scaleX(1); }

.rail-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-ink-muted);
  border-radius: var(--radius-sm);
  transition: color 0.24s ease-out, border-color 0.24s ease-out;
}
.header-cta:hover { color: var(--color-accent); border-color: var(--color-primary); }
.rail-status { font-size: var(--text-xs); line-height: 1.8; color: var(--color-ink-muted); }
.rail-status__batch {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  white-space: nowrap;
}
.rail-status__cycle { display: block; margin-top: 4px; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  min-height: 44px;
  padding: 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}
.nav-toggle__label { line-height: 1; }
.nav-toggle__bars {
  width: 16px;
  height: 7px;
  background-image:
    linear-gradient(currentColor 0 var(--border-thin), transparent var(--border-thin) 100%),
    linear-gradient(currentColor 0 var(--border-thin), transparent var(--border-thin) 100%);
  background-size: 100% var(--border-thin), 100% var(--border-thin);
  background-position: 0 0, 0 100%;
  background-repeat: no-repeat;
  transition: background-position 0.24s ease-out;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-position: 0 50%, 0 50%; }

/* ========== 6. 页脚：同色延续 ========== */
.site-footer {
  background-color: var(--color-surface);
  color: var(--color-ink);
}
.site-footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--section-y-lg) var(--space-3) var(--space-8);
}
.site-footer__rule {
  height: var(--border-thin);
  margin: 0 0 var(--space-8);
  background-color: var(--color-line);
}
.footer-brand { max-width: 46ch; }
.footer-brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}
.footer-brand__line {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.95;
  color: var(--color-ink-soft);
}
.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}
.footer__title {
  margin-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}
.footer__list { display: flex; flex-direction: column; gap: var(--space-1); }
.footer__link {
  display: inline-block;
  font-size: var(--text-sm);
  line-height: 1.9;
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid transparent;
  transition: color 0.24s ease-out, border-color 0.24s ease-out;
}
.footer__link:hover { color: var(--color-ink); border-bottom-color: var(--color-primary); }
.footer__meta {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-8);
  font-size: var(--text-xs);
  line-height: 1.9;
  color: var(--color-ink-muted);
}
.footer__note { max-width: var(--measure); }
.footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-6);
  color: var(--color-ink-soft);
}
.footer__meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  color: var(--color-ink-muted);
}
.footer__record { font-family: var(--font-mono); letter-spacing: 0.04em; white-space: nowrap; }
.footer__locale { letter-spacing: 0.08em; }

/* ========== 7. 响应式 ========== */
@media (min-width: 1200px) {
  #main-content, .site-footer { margin-left: 216px; }
}

@media (max-width: 1199px) {
  html { scroll-padding-top: 120px; }
  .site-header {
    position: sticky;
    top: 0;
    bottom: auto;
    left: auto;
    width: 100%;
    background-image: none;
    background-color: color-mix(in srgb, var(--color-surface) 94%, var(--color-surface-alt));
  }
  .site-header__inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2) var(--space-4);
    height: auto;
    padding: var(--space-2) var(--space-3);
    overflow: visible;
  }
  .brand { flex: 1 1 220px; }
  .brand__sub { margin-top: var(--space-1); }
  .rail-foot {
    order: 2;
    margin-top: 0;
    margin-left: auto;
    flex-direction: row;
    align-items: center;
    gap: var(--space-3);
  }
  .rail-status { display: flex; gap: var(--space-2); align-items: baseline; }
  .rail-status__cycle { margin-top: 0; }
  .rail-nav { order: 3; flex: 1 1 100%; }
  .rail-nav__list { flex-direction: row; flex-wrap: wrap; gap: var(--space-2) var(--space-4); }
  .rail-nav__link { padding: var(--space-1) 0 5px; }
  .rail-nav__link::before { width: 100%; bottom: 0; }
}

@media (max-width: 900px) {
  .col-3, .col-4, .col-6, .col-8 { grid-column: span 12; }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
  .site-header__inner { flex-wrap: nowrap; gap: var(--space-2); }
  .brand { flex: 0 1 auto; min-width: 0; }
  .brand__line, .brand__sub { display: none; }
  .brand__name { font-size: var(--text-lg); }
  .nav-toggle { display: inline-flex; position: relative; z-index: 72; margin-left: auto; }

  .rail-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 65;
    display: block;
    padding: calc(var(--space-8) + var(--space-4)) var(--space-3) 200px;
    background-color: var(--color-surface);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.24s ease-out, transform 0.24s ease-out, visibility 0.24s;
  }
  .site-header[data-open] .rail-nav { opacity: 1; visibility: visible; transform: none; }
  .rail-nav__list { flex-direction: column; gap: var(--space-1); }
  .rail-nav__link { font-size: var(--text-lg); padding: var(--space-2) 0; }
  .rail-nav__link::before { width: 28px; bottom: 10px; }

  .rail-foot {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 66;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
    padding: var(--space-3);
    background-color: var(--color-surface);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.24s ease-out, transform 0.24s ease-out, visibility 0.24s;
  }
  .site-header[data-open] .rail-foot { opacity: 1; visibility: visible; transform: none; }
  .rail-status { display: block; }

  .section { padding-block: var(--space-8); }
  .section--wide { padding-block: var(--space-8); }
  .site-footer__inner { padding-top: var(--space-8); }
  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: var(--space-4); }
  .footer__contact { flex-direction: column; gap: 0; }
}

@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;
  }
  html[data-js="on"] [data-reveal] { opacity: 1; transform: none; transition: none; }
  .scroll-progress { display: none; }
}