:root {
  --color-surface: #f8f8f8;
  --color-surface-alt: #eeeeee;
  --color-surface-deep: #e0e0df;
  --color-ink: #2e322a;
  --color-ink-soft: #5a6152;
  --color-ink-muted: #737b6b;
  --color-line: #d4d4d3;
  --color-primary: #508118;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e0e7d9;
  --color-accent: #4420df;
  --color-accent-ink: #ffffff;
  --color-highlight: #d8d1f4;
  --color-focus: #3c13ec;
  --color-contrast-surface: #1f2815;
  --color-contrast-ink: #e6e7e4;
  --color-contrast-line: #4b5243;
  --color-contrast-accent: #927ded;
  --overlay-scrim: linear-gradient(180deg, rgba(31, 40, 21, 0.35) 0%, rgba(31, 40, 21, 0.72) 55%, rgba(31, 40, 21, 0.92) 100%);
  --font-heading: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 11.0px;
  --text-sm: 14.7px;
  --text-base: 17px;
  --text-lg: 22.7px;
  --text-xl: 30.2px;
  --text-2xl: 40.3px;
  --text-3xl: 53.7px;
  --text-4xl: 71.5px;
  --text-display: clamp(52px, 10.7vw, 137px);
  --text-figure: clamp(44px, 7.7vw, 99px);
  --weight-heading: 746;
  --weight-body: 400;
  --leading-body: 1.78;
  --leading-heading: 1.19;
  --tracking-heading: -0.005em;
  --radius-sm: 1px;
  --radius-md: 1px;
  --radius-lg: 1px;
  --radius-pill: 1px;
  --border-thin: 1px;
  --border-thick: 2px;
  --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: 1280px;
  --measure: 74ch;
  --gutter: 32px;
  --section-y: 96px;
  --section-y-lg: 134px;
}

/* ============================================================
   1. RESET
   ============================================================ */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 88px;
}

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

ul, ol { padding: 0; list-style: none; }

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);
}

a { color: inherit; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  margin: 0;
  padding: 0;
}

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

img { height: auto; }

table { border-collapse: collapse; width: 100%; }

hr {
  border: 0;
  border-top: var(--border-thin) solid var(--color-line);
  margin: 0;
}

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

:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 0;
}

/* ============================================================
   2. 基础排版 / 中文
   ============================================================ */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background-color: var(--color-surface);
  overflow-wrap: break-word;
  word-break: normal;
  line-break: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); }

p + p { margin-top: var(--space-3); }

strong { font-weight: 700; }

/* ============================================================
   3. 布局基元
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.measure { max-width: var(--measure); }

.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--alt { background-color: var(--color-surface-alt); }
.section--deep { background-color: var(--color-surface-deep); }

.section--contrast {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.section--contrast h1,
.section--contrast h2,
.section--contrast h3,
.section--contrast h4 { color: var(--color-contrast-ink); }

.section--contrast a { color: var(--color-contrast-ink); }

.stack > * + * { margin-top: var(--space-3); }
.stack--tight > * + * { margin-top: var(--space-1); }
.stack--loose > * + * { margin-top: var(--space-6); }

/* 分屏骨架 */
.split {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  align-items: stretch;
}

.split--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }

.split__aside {
  padding: var(--space-6) var(--space-6) var(--space-6) 0;
}

.split__main {
  padding: var(--space-6) 0 var(--space-6) var(--space-6);
  border-left: var(--border-thin) solid var(--color-line);
}

.section--contrast .split__main { border-left-color: var(--color-contrast-line); }

/* ============================================================
   4. 跳转链接
   ============================================================ */
.skip-link {
  position: fixed;
  top: -72px;
  left: var(--space-2);
  z-index: 200;
  display: inline-block;
  padding: 10px 16px;
  font-size: var(--text-sm);
  text-decoration: none;
  color: var(--color-contrast-ink);
  background: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-contrast-accent);
  border-radius: var(--radius-sm);
  transition: top 0.18s linear;
}

.skip-link:focus { top: var(--space-2); }

/* ============================================================
   5. 页头 —— 分屏结构
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.header-inner {
  display: grid;
  grid-template-columns: minmax(238px, 30%) minmax(0, 1fr);
  align-items: stretch;
  min-height: 92px;
  transition: min-height 0.2s linear;
}

.site-header.is-condensed .header-inner { min-height: 56px; }

.header-brand {
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0 var(--space-3) 0 var(--gutter);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-right: var(--border-thin) solid var(--color-contrast-line);
}

.header-brand__texture {
  position: absolute;
  inset: -25% -20%;
  pointer-events: none;
  opacity: 0.6;
  background-image:
    radial-gradient(circle at 16% 30%, color-mix(in srgb, var(--color-contrast-accent) 55%, transparent) 0 1.5px, transparent 2px),
    radial-gradient(circle at 58% 70%, color-mix(in srgb, var(--color-contrast-accent) 34%, transparent) 0 1.5px, transparent 2px),
    radial-gradient(circle at 84% 22%, color-mix(in srgb, var(--color-contrast-ink) 30%, transparent) 0 1px, transparent 1.6px),
    repeating-linear-gradient(-14deg, transparent 0 26px, color-mix(in srgb, var(--color-contrast-accent) 14%, transparent) 26px 27px);
  animation: wave-drift 24s linear infinite;
}

@keyframes wave-drift {
  from { transform: translateX(0); }
  to { transform: translateX(-64px); }
}

.brand {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-contrast-ink);
}

.brand__mark {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  padding: 4px 6px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.1em;
  color: var(--color-contrast-accent);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand__name {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: 1.15;
  color: var(--color-contrast-ink);
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.site-header.is-condensed .brand__tag { display: none; }

.header-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  min-width: 0;
  padding-left: var(--space-3);
  padding-right: max(var(--gutter), calc((100vw - var(--container)) / 2));
}

.primary-nav {
  display: flex;
  align-items: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
}

.nav-link {
  display: block;
  padding: 10px 10px;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  color: var(--color-ink-soft);
  border-bottom: var(--border-thick) solid transparent;
  transition: color 0.18s linear, border-color 0.18s linear, background-color 0.18s linear;
}

.nav-link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-link[aria-current="page"] {
  color: var(--color-primary-ink);
  background-color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: 10px 14px;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  background-color: transparent;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.18s linear, border-color 0.18s linear;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 1px;
  background-color: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background-color: currentColor;
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: var(--border-thick);
  pointer-events: none;
}

.header-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ============================================================
   6. 页脚 —— 极简单行
   ============================================================ */
.site-footer {
  position: relative;
  background-color: var(--color-surface);
  border-top: var(--border-thin) solid var(--color-line);
  padding-block: var(--space-4);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.footer-brand {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  min-width: 0;
}

.footer-brand__name {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-ink);
  border-left: var(--border-thick) solid var(--color-primary);
  padding-left: var(--space-1);
}

.footer-brand__tag {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-3);
  font-size: var(--text-sm);
}

.footer-links a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 0.18s linear, border-color 0.18s linear;
}

.footer-links a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
  text-align: right;
}

/* ============================================================
   7. 返回顶部
   ============================================================ */
.to-top {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  background-color: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s linear, transform 0.2s linear, visibility 0.2s linear, border-color 0.18s linear, color 0.18s linear;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  color: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
}

/* ============================================================
   8. 通用组件
   ============================================================ */
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.section--contrast .eyebrow { color: var(--color-contrast-accent); }

.meta-note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.section--contrast .meta-note {
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}

.data-num {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-feature-settings: "tnum" 1, "zero" 1;
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.section-index {
  display: block;
  font-family: var(--font-mono);
  font-size: calc(var(--text-3xl) * 1.6);
  font-weight: var(--weight-heading);
  line-height: 0.86;
  letter-spacing: -0.02em;
  color: var(--color-accent);
  font-feature-settings: "tnum" 1;
}

.section--contrast .section-index { color: var(--color-contrast-accent); }

.tag {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-highlight);
  border-radius: var(--radius-sm);
}

.tag--accent {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.tag--deep {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 12px 20px;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--color-primary);
  background-color: transparent;
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.18s linear, color 0.18s linear, border-color 0.18s linear;
}

.btn:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--solid {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--solid:hover {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.btn--accent {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn--accent:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--on-dark {
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
}

.btn--on-dark:hover {
  background-color: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

/* 面包屑 */
.breadcrumbs {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-1);
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.breadcrumbs li + li::before {
  content: "/";
  color: var(--color-line);
}

.breadcrumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
}

.breadcrumbs a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* 图片容器 —— 深色衬底 + 细线描边 */
.figure-box {
  position: relative;
  padding: var(--space-1);
  background-color: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.figure-box img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  background-color: var(--color-surface-deep);
}

.figure-box--wide img { aspect-ratio: 16 / 9; }
.figure-box--tall img { aspect-ratio: 4 / 5; }

.figure-box__caption {
  position: absolute;
  left: var(--space-1);
  right: var(--space-1);
  bottom: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-contrast-ink);
  background-image: var(--overlay-scrim);
}

.section--contrast .figure-box { border-color: var(--color-contrast-line); }

/* 折叠面板 */
.accordion {
  border-top: var(--border-thin) solid var(--color-line);
}

.accordion__item {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) 0;
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: var(--leading-heading);
  color: var(--color-ink);
  cursor: pointer;
  transition: color 0.18s linear;
}

.accordion__trigger::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-accent);
}

.accordion__trigger[aria-expanded="true"] { color: var(--color-primary); }
.accordion__trigger[aria-expanded="true"]::after { content = none; }

.accordion__trigger[aria-expanded="true"]::after { content: "–"; }

.accordion__trigger:hover { color: var(--color-primary); }

.accordion__panel {
  display: none;
  padding-bottom: var(--space-4);
}

.accordion__panel[data-open] {
  display: block;
  animation: panel-in 0.18s ease-out;
}

@keyframes panel-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 章节目录当前项 */
[data-toc-link].is-current {
  color: var(--color-accent);
  border-left: var(--border-thick) solid var(--color-accent);
}

/* 显现 */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s linear, transform 0.2s linear;
}

html.has-js [data-reveal].is-shown {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   9. 响应式
   ============================================================ */
@media (max-width: 1120px) {
  .nav-link {
    padding: 10px 8px;
    font-size: var(--text-sm);
  }
}

@media (max-width: 1024px) {
  html { scroll-padding-top: 64px; }

  .header-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    min-height: 64px;
  }

  .site-header.is-condensed .header-inner { min-height: 56px; }

  .header-brand {
    padding-left: var(--space-3);
    padding-right: var(--space-2);
  }

  .header-nav {
    padding-left: 0;
    padding-right: var(--space-3);
  }

  .brand__tag { display: none; }

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

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    background-color: var(--color-contrast-surface);
    border-top: var(--border-thin) solid var(--color-contrast-line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.18s ease-out, transform 0.18s ease-out, visibility 0.18s ease-out;
  }

  .primary-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: var(--space-1);
  }

  .nav-link {
    padding: 14px var(--space-3);
    font-size: var(--text-base);
    color: var(--color-contrast-ink);
    border-bottom: var(--border-thin) solid var(--color-contrast-line);
    border-left: var(--border-thick) solid transparent;
    white-space: normal;
  }

  .nav-link:hover {
    color: var(--color-contrast-accent);
    border-bottom-color: var(--color-contrast-line);
    border-left-color: var(--color-contrast-accent);
  }

  .nav-link[aria-current="page"] {
    color: var(--color-contrast-surface);
    background-color: var(--color-contrast-accent);
    border-left-color: var(--color-contrast-accent);
  }

  .split,
  .split--5-7 { grid-template-columns: minmax(0, 1fr); }

  .split__aside { padding: 0 0 var(--space-4); }

  .split__main {
    padding: var(--space-4) 0 0;
    border-left: 0;
    border-top: var(--border-thin) solid var(--color-line);
  }

  .section--contrast .split__main { border-top-color: var(--color-contrast-line); }
}

@media (max-width: 820px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

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

@media (max-width: 720px) {
  .container,
  .footer-inner { padding-inline: var(--space-2); }

  .section { padding-block: var(--space-8); }
  .section--lg { padding-block: var(--space-8); }

  h1 { font-size: var(--text-xl); }
  h2 { font-size: var(--text-lg); }
  h3 { font-size: var(--text-base); }

  .section-index { font-size: calc(var(--text-2xl) * 1.4); }

  .accordion__trigger { font-size: var(--text-base); }

  .to-top {
    right: var(--space-2);
    bottom: var(--space-2);
  }

  .header-brand { padding-left: var(--space-2); }
  .header-nav { padding-right: var(--space-2); }
  .brand__mark { min-width: 30px; }
  .brand__name { font-size: var(--text-sm); }
}

/* ============================================================
   10. 动效偏好
   ============================================================ */
@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;
    scroll-behavior: auto !important;
  }

  .header-brand__texture { animation: none; }

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}