/* ==========================================================================
   腾达会真人馆 · 中国区会员中心
   共享站点样式 /assets/site.css
   设计语言：档案轨道 / 墨海夜底 / 1px 精密网格 / 湖青锚点 / 琥珀金规则高亮
   ========================================================================== */

/* ---------- 0. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

body {
  margin: 0;
  min-height: 100%;
  background-color: #06121A;
  background-image:
    linear-gradient(rgba(95, 211, 228, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 211, 228, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  background-attachment: fixed;
  color: #F5F2EC;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

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

::selection { background: #F2B23C; color: #10100A; }

:focus-visible {
  outline: 2px solid #F2B23C;
  outline-offset: 2px;
  border-radius: 2px;
}

#main-content { scroll-margin-top: 24px; }

html[data-nav-lock] { overflow: hidden; }

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #06121A;
  --ink-2: #0C2230;
  --ink-3: #08161F;
  --violet: #3A2B5E;
  --violet-lift: #6B4FA8;
  --lake: #1B8FA8;
  --lake-light: #5FD3E4;
  --amber: #F2B23C;
  --amber-deep: #B87A16;
  --mist: #F5F2EC;
  --rock: #9FB3BD;
  --sand: #EFE9DF;

  --hairline: rgba(95, 211, 228, 0.18);
  --hairline-strong: rgba(95, 211, 228, 0.34);

  --rail-w: clamp(216px, 18vw, 262px);
  --gutter: clamp(20px, 4vw, 56px);
  --content-max: 1240px;
  --radius: 4px;

  --font-head: "Source Han Sans SC", "Noto Sans SC", "Inter Tight",
    system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", system-ui,
    -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace,
    SFMono-Regular, Menlo, Consolas, monospace;

  --ease-track: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- 2. 轨道留白（桌面让开左侧轨道，移动留出底部胶囊） ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

@media (max-width: 1023px) {
  body { padding-bottom: 96px; }
}

/* ---------- 3. 跳至主要内容的 skip link ---------- */
.skip-link {
  position: fixed;
  top: 14px;
  left: calc(var(--rail-w) + 18px);
  z-index: 300;
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: var(--amber);
  color: #10100A;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 2px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.55);
  transform: translateY(-180%);
  transition: transform 0.24s var(--ease-track);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: 3px;
}

/* ---------- 4. 顶部阅读进度轨 ---------- */
.scroll-meter {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 2px;
  z-index: 260;
  background: rgba(95, 211, 228, 0.12);
  pointer-events: none;
}

.scroll-meter__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--lake) 0%, var(--lake-light) 58%, var(--amber) 100%);
  transition: width 0.08s linear;
}

/* ---------- 5. 当前章节浮岛 ---------- */
.section-island {
  position: fixed;
  top: 18px;
  right: 24px;
  z-index: 240;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 12px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  background: rgba(6, 18, 26, 0.78);
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  line-height: 1.6;
  pointer-events: none;
}

.section-island__dot {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(242, 178, 60, 0.18);
}

.section-island__label {
  max-width: 15em;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* ---------- 6. 页头：桌面左侧竖排轨道 ---------- */
.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 250;
  width: var(--rail-w);
  display: flex;
  padding: 26px 16px 22px;
  background:
    linear-gradient(180deg, #08161F 0%, #0C2230 54%, #14152C 100%);
  border-right: 1px solid var(--hairline);
  box-shadow: 1px 0 0 rgba(0, 0, 0, 0.45), 12px 0 40px rgba(0, 0, 0, 0.28);
  overflow: hidden auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(95, 211, 228, 0.32) transparent;
}

.site-header::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: radial-gradient(120% 100% at 0% 0%, rgba(95, 211, 228, 0.16), transparent 70%);
  pointer-events: none;
}

.site-header__rail {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 22px;
  width: 100%;
  min-height: 100%;
}

/* 品牌锁定 */
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border: 1px solid var(--lake);
  border-radius: 2px;
  background: rgba(27, 143, 168, 0.14);
  color: var(--lake-light);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  line-height: 1;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.brand:hover .brand__mark {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(242, 178, 60, 0.12);
}

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

.brand__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--mist);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: 0.2em;
  color: var(--rock);
}

/* 移动菜单按钮（桌面隐藏） */
.rail-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid rgba(242, 178, 60, 0.45);
  border-radius: 999px;
  background: rgba(242, 178, 60, 0.12);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.4;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.rail-toggle:hover { background: rgba(242, 178, 60, 0.22); border-color: var(--amber); }

.rail-toggle__bars { display: grid; gap: 4px; width: 16px; flex: 0 0 16px; }

.rail-toggle__bars span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: currentColor;
  transition: transform 0.26s var(--ease-track), opacity 0.2s ease;
}

.site-header[data-open] .rail-toggle__bars span:first-child {
  transform: translateY(2.75px) rotate(45deg);
}

.site-header[data-open] .rail-toggle__bars span:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

/* 导航 */
.site-nav {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar { width: 0; height: 0; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.site-nav__item { min-width: 0; }

.site-nav__link {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--rock);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0.05em;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.site-nav__link:hover {
  color: var(--mist);
  border-color: rgba(95, 211, 228, 0.32);
  background: rgba(95, 211, 228, 0.08);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--lake);
  transition: color 0.2s ease;
}

.site-nav__label {
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.site-nav__link[aria-current="page"] {
  color: var(--mist);
  border-color: rgba(242, 178, 60, 0.55);
  background: linear-gradient(90deg, rgba(242, 178, 60, 0.2), rgba(242, 178, 60, 0.02));
  box-shadow: inset 0 0 0 1px rgba(242, 178, 60, 0.1);
}

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

.site-nav__link[aria-current="page"] .site-nav__label {
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* 轨道底部工具区 */
.rail-tools {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
}

.rail-cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 16px;
  border-radius: 999px;
  background: var(--amber);
  color: #10100A;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.4;
  transition: background 0.2s ease, transform 0.2s ease;
}

.rail-cta:hover { background: #FFC65C; transform: translateY(-1px); }
.rail-cta:active { background: var(--amber-deep); transform: none; }

.rail-cta__arrow { font-family: var(--font-mono); font-size: 13px; line-height: 1; }

.rail-lang {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--rock);
  text-transform: uppercase;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, #07141D 0%, #0A1B26 58%, #0C2230 100%);
  border-top: 1px solid var(--hairline);
  color: var(--rock);
}

.site-footer__bands {
  display: flex;
  height: 8px;
  width: 100%;
}

.site-footer__bands span { flex: 1 1 25%; }
.site-footer__bands span:nth-child(1) { background: var(--lake); }
.site-footer__bands span:nth-child(2) { background: var(--lake-light); opacity: 0.7; }
.site-footer__bands span:nth-child(3) { background: var(--violet-lift); }
.site-footer__bands span:nth-child(4) { background: var(--amber); }

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(190px, 1fr) minmax(0, 1.85fr) minmax(230px, 1.1fr);
  gap: clamp(24px, 4vw, 56px);
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(44px, 6vw, 78px) var(--gutter) clamp(30px, 4vw, 46px);
}

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

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--mist);
}

.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border: 1px solid var(--lake);
  border-radius: 2px;
  background: rgba(27, 143, 168, 0.14);
  color: var(--lake-light);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
}

.footer-brand__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.footer-tagline {
  margin-top: 16px;
  max-width: 20em;
  font-size: 14px;
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: var(--rock);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 32px);
  min-width: 0;
}

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

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  line-height: 1.6;
  color: var(--lake-light);
  text-transform: uppercase;
}

.footer-col__list { display: grid; gap: 2px; }

.footer-link {
  display: inline-block;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--rock);
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-link:hover { color: var(--mist); transform: translateX(3px); }

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

.footer-contact__line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.footer-contact__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--lake-light);
}

.footer-note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid rgba(242, 178, 60, 0.55);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--rock);
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 18px var(--gutter) 26px;
  border-top: 1px solid rgba(95, 211, 228, 0.14);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--rock);
}

.footer-top {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lake-light);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-top:hover { color: var(--amber); border-bottom-color: currentColor; }

/* ---------- 8. 通用容器与排版 ---------- */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section-no {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
  line-height: 1.6;
  color: var(--lake-light);
  text-transform: uppercase;
}

.section-no::after {
  content: "";
  width: 40px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  line-height: 1.7;
  color: var(--amber);
  text-transform: uppercase;
}

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.band-rule {
  width: 100%;
  height: 8px;
  background: linear-gradient(
    90deg,
    var(--lake) 0%,
    var(--lake) 32%,
    var(--violet-lift) 32%,
    var(--violet-lift) 64%,
    var(--amber) 64%,
    var(--amber) 100%
  );
  opacity: 0.9;
}

/* ---------- 9. 通用按钮 ---------- */
.btn {
  --btn-bg: var(--lake);
  --btn-fg: #04141A;
  --btn-line: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid var(--btn-line);
  border-radius: 2px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.5;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease,
    transform 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; }

.btn--amber { --btn-bg: var(--amber); --btn-fg: #10100A; }
.btn--amber:hover { --btn-bg: #FFC65C; }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--mist);
  --btn-line: rgba(95, 211, 228, 0.4);
}

.btn--ghost:hover {
  --btn-bg: rgba(95, 211, 228, 0.1);
  --btn-line: var(--lake-light);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.7;
  color: var(--rock);
}

.breadcrumb li { display: flex; align-items: center; gap: 8px; }

.breadcrumb li + li::before {
  content: "/";
  color: rgba(159, 179, 189, 0.48);
}

.breadcrumb a { color: var(--rock); transition: color 0.2s ease; }
.breadcrumb a:hover { color: var(--lake-light); }
.breadcrumb [aria-current="page"] { color: var(--mist); }

/* ---------- 11. 面板与网格 ---------- */
.panel {
  background: var(--ink-2);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: clamp(18px, 2.6vw, 28px);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

/* ---------- 12. 响应式图片容器（页面阶段填充占位） ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background:
    linear-gradient(142deg, #0C2230 0%, #161029 58%, #08161F 100%);
}

.media-frame img,
.media-frame svg,
.media-frame picture {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--cinema { aspect-ratio: 16 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--portrait { aspect-ratio: 4 / 5; }

.media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--mist);
  background: linear-gradient(0deg, rgba(6, 18, 26, 0.94), rgba(6, 18, 26, 0));
}

/* ---------- 13. 显现与计数 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease-track), transform 0.6s var(--ease-track);
}

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

/* ---------- 14. 断点：平板 ---------- */
@media (max-width: 1100px) and (min-width: 768px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .footer-contact { grid-column: 1 / -1; }
}

/* ---------- 15. 断点：移动 / 平板（≤1023px） ---------- */
@media (max-width: 1023px) {
  .skip-link { left: 16px; top: auto; bottom: 96px; }

  .scroll-meter { left: 0; }

  .section-island { display: none; }

  body:has(.site-header[data-open]) { overflow: hidden; }

  .site-header {
    inset: auto 12px 12px 12px;
    width: auto;
    height: auto;
    padding: 8px 8px 8px 14px;
    border: 1px solid var(--hairline-strong);
    border-right: 1px solid var(--hairline-strong);
    border-radius: 999px;
    background: #0A1A25;
    box-shadow: 0 14px 38px rgba(0, 0, 0, 0.6), inset 0 0 0 1px rgba(242, 178, 60, 0.07);
    overflow: visible;
    z-index: 280;
  }

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

  .site-header__rail {
    flex-direction: row;
    align-items: center;
    gap: 10px;
    min-height: 0;
  }

  .brand { flex: 0 1 auto; min-width: 0; }

  .brand__mark { width: 34px; height: 34px; flex: 0 0 34px; font-size: 15px; }

  .brand__name { font-size: 14px; }

  .brand__sub { display: none; }

  .rail-toggle { display: inline-flex; margin-left: auto; flex: 0 0 auto; }

  .rail-tools { display: none; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 270;
    display: block;
    flex: 0 0 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 92px 20px 140px;
    background:
      linear-gradient(168deg, #06121A 0%, #0C2230 54%, #2A1E48 100%);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s var(--ease-track), transform 0.3s var(--ease-track),
      visibility 0s linear 0.3s;
  }

  .site-header[data-open] .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity 0.3s var(--ease-track), transform 0.3s var(--ease-track),
      visibility 0s linear 0s;
  }

  .site-nav__list {
    gap: 6px;
    max-width: 520px;
    margin: 0 auto;
  }

  .site-nav__link {
    grid-template-columns: 34px 1fr;
    gap: 14px;
    padding: 15px 18px;
    border-radius: 6px;
    font-size: clamp(17px, 4.4vw, 21px);
    line-height: 1.5;
    letter-spacing: 0.04em;
  }

  .site-nav__index { font-size: 12px; letter-spacing: 0.12em; }

  .site-nav__label { white-space: normal; }

  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 18px; }

  .footer-tagline { max-width: none; }
}

/* ---------- 16. 断点：小屏 ---------- */
@media (max-width: 560px) {
  body { font-size: 15.5px; }

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

  .site-footer__base { justify-content: flex-start; }

  .breadcrumb { font-size: 11px; letter-spacing: 0.06em; }
}

/* ---------- 17. 降低动态 ---------- */
@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;
  }

  [data-reveal] { opacity: 1; transform: none; }

  .scroll-meter__fill { transition: none; }
}