/* ==========================================================================
   问鼎苹果会馆 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================================== */

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

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

body {
  margin: 0;
  padding-top: var(--top-h);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.95;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.16;
}

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;
  cursor: pointer;
}

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

p { margin: 0 0 1em; }

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

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

:root {
  --ink: #0B120E;
  --ink-2: #141B17;
  --card: #1C2721;
  --line: #2C382F;
  --text: #C9D6CE;
  --title: #F3F1E7;
  --accent: #9EE84F;
  --accent-dim: #5FA82F;
  --amber: #E2A64B;
  --muted: #7E8F84;

  --rail-w: 224px;
  --top-h: 66px;
  --gutter: clamp(20px, 4vw, 64px);
  --col-gap: 24px;
  --maxw: 1320px;

  --font-head: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: var(--font-head);
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --ease: cubic-bezier(0.22, 0.8, 0.3, 1);
}

@media (max-width: 600px) {
  :root { --top-h: 58px; --col-gap: 16px; }
}

/* ---------- 2. 骨架偏移：内容被顶栏与左栏框住 ---------- */
#main-content { position: relative; z-index: 1; }

@media (min-width: 1080px) {
  body { padding-left: var(--rail-w); }
}

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  font-family: var(--font-head);
  font-weight: 900;
  color: var(--title);
  letter-spacing: -0.02em;
  line-height: 1.18;
}

.display-1 { font-size: clamp(44px, 8.4vw, 96px); line-height: 1.02; letter-spacing: -0.03em; }
.display-2 { font-size: clamp(32px, 5vw, 64px); line-height: 1.06; }
.display-3 { font-size: clamp(26px, 3.4vw, 40px); line-height: 1.14; }
.h4 { font-size: 20px; font-weight: 800; }

.mono { font-family: var(--font-mono); letter-spacing: 0.06em; }
.muted { color: var(--muted); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--accent);
}

.lede {
  max-width: 34em;
  margin: 0 0 1.4em;
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.9;
  color: var(--text);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 15px;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}
.link-arrow::after { content: "→"; display: inline-block; }
.link-arrow:hover { border-bottom-color: var(--accent); }

/* ---------- 4. 容器与栅格 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.prose { max-width: 38em; line-height: 1.95; }
.prose p { margin: 0 0 1.4em; }
.prose h2, .prose h3 { margin: 2.2em 0 0.8em; }
.prose > *:last-child { margin-bottom: 0; }

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

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }

@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .col-3, .col-4, .col-5 { grid-column: span 2; }
  .col-7, .col-8, .col-9 { grid-column: span 4; }
}

@media (max-width: 600px) {
  .grid-12 { grid-template-columns: 1fr; }
  .col-3, .col-4, .col-5, .col-7, .col-8, .col-9 { grid-column: span 1; }
}

.stack { display: flex; flex-direction: column; gap: clamp(16px, 2vw, 28px); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }

/* ---------- 5. 头部：顶部横条 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  transform: translateY(-180%);
  background: var(--accent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: transform 180ms var(--ease);
}
.skip-link:focus { transform: none; }

.frame-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  height: var(--top-h);
  padding: 0 var(--gutter);
  background: rgba(11, 18, 14, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
  min-width: 0;
}

.brand__mark {
  flex: none;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 30%, var(--accent) 0 36%, transparent 37%),
    radial-gradient(circle at 68% 72%, var(--accent-dim) 0 30%, transparent 31%),
    var(--card);
  box-shadow: inset 0 0 0 1px rgba(158, 232, 79, 0.16);
}

.brand__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }

.brand__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--title);
}

.brand__sub {
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.top-bar__meta {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.top-bar__actions { display: flex; align-items: center; gap: 12px; }

@media (max-width: 1240px) { .top-bar__meta { display: none; } }
@media (max-width: 1000px) { .brand__sub { display: none; } }
@media (max-width: 520px) {
  .brand__name { font-size: 15px; }
  .btn--primary { padding: 9px 12px; font-size: 13px; }
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  transition: transform 120ms linear;
}

/* ---------- 6. 头部：左侧框架式索引竖栏 ---------- */
.frame-rail {
  position: fixed;
  top: var(--top-h);
  bottom: 0;
  left: 0;
  z-index: 70;
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: var(--rail-w);
  padding: 28px 20px 24px;
  overflow-y: auto;
  background: linear-gradient(180deg, #101812 0%, var(--ink) 100%);
  border-right: 1px solid var(--line);
}

.rail__head {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.rail-index {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
  padding-left: 14px;
}

.rail-indicator {
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 28px;
  opacity: 0;
  background: var(--accent);
  transition: transform 280ms var(--ease), height 280ms var(--ease), opacity 160ms linear;
}
.rail-indicator[data-ready="true"] { opacity: 1; }

.rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  font-size: 15px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  transition: color 160ms var(--ease);
}

.rail-link__num { font-size: 12px; color: var(--line); transition: color 160ms var(--ease); }
.rail-link__text { line-height: 1.5; }

.rail-link:hover { color: var(--text); }
.rail-link:hover .rail-link__num { color: var(--accent-dim); }

.rail-link[aria-current="page"] { color: var(--title); }
.rail-link[aria-current="page"] .rail-link__num { color: var(--accent); }

.rail__foot {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.rail__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* 移动端：竖栏变成顶栏下方的抽屉 */
@media (max-width: 1079px) {
  .frame-rail {
    top: var(--top-h);
    right: 0;
    bottom: auto;
    left: 0;
    width: auto;
    max-height: calc(100vh - var(--top-h));
    padding: 22px var(--gutter) 28px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 26px 48px -26px rgba(0, 0, 0, 0.95);
    transition: transform 220ms var(--ease), opacity 220ms var(--ease), visibility 220ms;
  }

  .site-header[data-open] .frame-rail {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .rail-index { flex-direction: row; flex-wrap: wrap; gap: 4px 20px; padding-left: 0; }
  .rail-indicator { display: none; }
  .rail-link { flex: 1 1 42%; }
}

/* ---------- 7. 通用按钮 / 标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: background-color 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease);
}

.btn--primary {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  color: var(--ink);
  font-weight: 600;
}
.btn--primary:hover { background: var(--accent); border-color: var(--accent); }

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

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

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: background-color 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.tag--amber { color: var(--amber); border-color: var(--amber); }
.tag--amber:hover { background: var(--amber); color: var(--ink); }

.tag--green { color: var(--accent); border-color: var(--accent-dim); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}
.nav-toggle:hover { border-color: var(--accent); color: var(--accent); }

.nav-toggle__bars {
  display: block;
  width: 16px;
  height: 10px;
  background-image: linear-gradient(
    var(--accent) 0 2px, transparent 2px 4px,
    var(--accent) 4px 6px, transparent 6px 8px,
    var(--accent) 8px 10px
  );
}

.site-header[data-open] .nav-toggle { border-color: var(--accent); color: var(--accent); }

@media (min-width: 1080px) {
  .nav-toggle { display: none; }
}

/* ---------- 8. 章节节奏 / 分割线 ---------- */
.section {
  position: relative;
  padding-block: clamp(56px, 9vw, 96px);
  border-top: 1px solid var(--line);
}
.section:first-of-type { border-top: 0; }
.section--tight { padding-block: clamp(36px, 5vw, 56px); }

.rule-tooth {
  height: 6px;
  margin-block: 32px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 10px);
  background-repeat: no-repeat;
  background-size: 100% 6px;
}

/* ---------- 9. 结构构件 ---------- */
.anchor-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(72px, 11vw, 160px);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--accent);
  transition: color 160ms var(--ease);
}
a.anchor-num:hover { color: var(--title); }

.anchor-num--ghost {
  color: transparent;
  -webkit-text-stroke: 1px var(--accent-dim);
}

.card {
  position: relative;
  padding: clamp(20px, 2.4vw, 32px);
  background: var(--card);
  background-image: linear-gradient(180deg, rgba(201, 214, 206, 0.05), transparent 42%);
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: 0 20px 40px -36px rgba(0, 0, 0, 0.95), inset 0 1px 0 rgba(201, 214, 206, 0.045);
}

.panel {
  padding: clamp(20px, 2.6vw, 36px);
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs__sep { color: var(--line); }
.breadcrumbs [aria-current="page"] { color: var(--title); }

.aside-index {
  position: sticky;
  top: calc(var(--top-h) + 32px);
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.aside-index__link {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease);
}
.aside-index__link:hover { color: var(--text); }
.aside-index__link[aria-current="true"] { color: var(--accent); }

/* 技能树式步骤 */
.steps {
  margin-left: 15px;
  padding-left: 32px;
  border-left: 1px solid var(--line);
}
.step { position: relative; padding-bottom: 28px; }
.step:last-child { padding-bottom: 0; }

.step__num {
  position: absolute;
  top: 0;
  left: -47px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: background-color 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}
.step[data-open] .step__num {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
}

.step__body {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 320ms var(--ease), opacity 200ms linear;
}
.step[data-open] .step__body { max-height: 720px; opacity: 1; }

.step__meta {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* 文档条目 */
.doc-item { border-bottom: 1px solid var(--line); }
.doc-item__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 0;
  text-align: left;
}
.doc-item__title { font-size: 17px; font-weight: 600; color: var(--title); }
.doc-item__head::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  color: var(--accent);
}
.doc-item[data-open] .doc-item__head::after { content: "–"; }

.doc-item__body {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 320ms var(--ease), opacity 200ms linear;
}
.doc-item[data-open] .doc-item__body { max-height: 900px; opacity: 1; }

/* 导出提示条 */
.export-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  font-size: 14px;
  background: var(--ink-2);
  border: 1px solid var(--line);
}
.export-bar__text { margin: 0; color: var(--muted); }
.export-bar__detail {
  flex: 1 0 100%;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  color: var(--muted);
  transition: max-height 280ms var(--ease), opacity 200ms linear;
}
.export-bar[data-open] .export-bar__detail { max-height: 240px; opacity: 1; }

/* 字段复制 */
.copy-field {
  display: flex;
  align-items: stretch;
  overflow: hidden;
  background: var(--ink-2);
  border: 1px solid var(--line);
}
.copy-field__value {
  flex: 1;
  padding: 10px 14px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--title);
  white-space: nowrap;
}
.copy-btn {
  flex: none;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  border-left: 1px solid var(--line);
  transition: color 160ms var(--ease), background-color 160ms var(--ease);
}
.copy-btn:hover { color: var(--accent); }
.copy-btn[data-copied="true"] { color: var(--accent); background: rgba(158, 232, 79, 0.08); }

/* 新版 / 旧版切换 */
.switch { display: inline-flex; border: 1px solid var(--line); }
.switch__btn {
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: background-color 160ms var(--ease), color 160ms var(--ease);
}
.switch__btn[aria-pressed="true"] { background: var(--accent); color: var(--ink); }
.switch__btn--legacy[aria-pressed="true"] { background: var(--amber); color: var(--ink); }

/* 图片容器基础规则（页面阶段放入素材） */
.media-frame {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(150deg, #131A16 0%, var(--ink) 58%, #101814 100%);
  border: 1px solid var(--line);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06) brightness(0.94);
}
.media-frame__cap {
  position: absolute;
  bottom: 0;
  left: 0;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: rgba(11, 18, 14, 0.74);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

/* ---------- 10. 滚动显现 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 550ms var(--ease), transform 550ms var(--ease);
  transition-delay: calc(var(--reveal-i, 0) * 70ms);
}
.js-ready [data-reveal].is-in { opacity: 1; transform: translateY(0); }

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  padding: clamp(48px, 7vw, 88px) 0 32px;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 15px;
}

.footer__inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.footer__brand-name {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.02em;
  color: var(--title);
}

.footer__summary {
  max-width: 30em;
  margin: 0 0 20px;
  line-height: 1.9;
  color: var(--muted);
}

.footer__stamp {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--line);
}

.footer__col-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--title);
}

.footer__links { display: flex; flex-direction: column; gap: 10px; }

.footer__link { transition: color 160ms var(--ease); }
.footer__link:hover { color: var(--accent); }

.footer__contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 40px);
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

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

.contact-item__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.contact-item__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  overflow-wrap: anywhere;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-top: 24px;
  font-size: 13px;
  color: var(--muted);
}

.footer__legal-item { letter-spacing: 0.02em; }

@media (max-width: 1000px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .footer__contact { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 600px) {
  .footer__grid { grid-template-columns: 1fr; }
  .footer__legal { flex-direction: column; align-items: flex-start; }
}

/* ---------- 12. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 120ms !important;
    transition-delay: 0ms !important;
  }

  .js-ready [data-reveal] { transform: none; }

  .rail-indicator { transition: opacity 120ms linear; }

  .frame-rail,
  .scroll-progress { transition: opacity 120ms linear, visibility 120ms linear; }
}