/* ============================================================
   乐享指南 · 共享样式 /assets/site.css
   框架式导航 · 堆叠面板 · 深海蓝底 / 荧光青索引 / 暖橙提示
   ============================================================ */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, picture { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

:root {
  --sea-900: #061A2E;
  --sea-800: #0C2B49;
  --paper:   #F7FAFC;
  --mist:    #DCE8F2;
  --cyan:    #37E6D9;
  --orange:  #FF9C4A;
  --amber:   #FFC857;
  --mint:    #70E6A4;
  --coral:   #FF6F61;
  --steel:   #7892AB;
  --ink:     #07121D;

  --frame-top-h: 68px;
  --rail-w: 0px;

  --font-display: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-num: "Space Grotesk", "DIN 2014", "DIN Alternate", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --shadow-hard: 8px 8px 0 rgba(6, 26, 46, 0.55);
  --shadow-deep: 8px 8px 0 rgba(3, 12, 22, 0.6);
  --maxw: 1240px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --line-soft: 1px solid rgba(120, 146, 171, 0.34);
  --radius: 2px;
}

@media (min-width: 1024px) {
  :root { --rail-w: 152px; }
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  padding-top: var(--frame-top-h);
  padding-left: var(--rail-w);
  background: var(--sea-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: 0.01em;
}

p { max-width: 72ch; }
strong, b { font-weight: 700; }

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

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

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  transform: translateY(-220%);
  transition: transform 0.22s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 顶部框架条 ---------- */
.site-header { z-index: 95; }

.frame-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--frame-top-h);
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, #08233C 0%, #061A2E 100%);
  border-bottom: 1px solid rgba(120, 146, 171, 0.45);
  box-shadow: 0 6px 24px rgba(3, 12, 22, 0.45);
}

.frame-top__inner {
  width: 100%;
  max-width: 1680px;
  margin: 0 auto;
  padding: 0 clamp(12px, 2.2vw, 28px);
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 22px);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 12px 4px 0;
  border-right: 1px solid rgba(120, 146, 171, 0.35);
  flex: 0 0 auto;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 2px solid var(--cyan);
  background: rgba(55, 230, 217, 0.09);
  color: var(--cyan);
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
}
.brand__text { display: flex; flex-direction: column; gap: 1px; }
.brand__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper);
  line-height: 1.3;
}
.brand__tag {
  display: none;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: #8FA9C0;
  line-height: 1.4;
  white-space: nowrap;
}
@media (min-width: 680px) { .brand__tag { display: block; } }

/* 地域标记 */
.region-chip {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(120, 146, 171, 0.5);
  border-radius: 999px;
  color: #B9CCDE;
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  line-height: 1.6;
  white-space: nowrap;
}
.region-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(55, 230, 217, 0.85);
}
@media (min-width: 820px) { .region-chip { display: inline-flex; } }

/* 快捷入口 */
.quick-actions {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.quick-actions__link {
  padding: 6px 11px;
  border: 1px solid rgba(120, 146, 171, 0.5);
  border-radius: var(--radius);
  color: var(--mist);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  line-height: 1.5;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.quick-actions__link:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(55, 230, 217, 0.08);
}
.quick-actions__link--accent {
  background: var(--orange);
  border-color: var(--orange);
  color: #241406;
  font-weight: 700;
}
.quick-actions__link--accent:hover {
  background: var(--amber);
  border-color: var(--amber);
  color: #241406;
}
@media (min-width: 900px) { .quick-actions { display: flex; } }

/* 移动目录键 */
.nav-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 8px 12px;
  border: 2px solid rgba(55, 230, 217, 0.65);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav-toggle:hover { background: rgba(55, 230, 217, 0.12); border-color: var(--cyan); }
.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--cyan);
  border-radius: 1px;
  transition: transform 0.24s var(--ease), opacity 0.18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__text { white-space: nowrap; }
@media (min-width: 1024px) { .nav-toggle { display: none; } }

/* 滚动进度 */
.frame-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: rgba(120, 146, 171, 0.16);
  pointer-events: none;
}
.frame-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--mint) 100%);
}

/* ---------- 左缘编号导航（框架的一部分） ---------- */
.frame-rail {
  position: fixed;
  top: var(--frame-top-h);
  bottom: 0;
  left: 0;
  z-index: 80;
  width: min(304px, 84vw);
  padding: 20px 14px 26px;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0A2540 0%, #061A2E 72%);
  border-right: 2px solid rgba(55, 230, 217, 0.3);
  box-shadow: 14px 0 0 rgba(3, 12, 22, 0.45);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(-104%);
  visibility: hidden;
  transition: transform 0.3s var(--ease), visibility 0.3s var(--ease);
}
.frame-rail[data-open] { transform: translateX(0); visibility: visible; }

.frame-rail__inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 100%;
  width: 100%;
}

.frame-rail__label {
  padding-left: 4px;
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.26em;
  color: var(--steel);
  max-width: none;
}

.rail-list { display: grid; gap: 2px; }
.rail-list__item { border-top: 1px solid rgba(120, 146, 171, 0.22); }
.rail-list__item:last-child { border-bottom: 1px solid rgba(120, 146, 171, 0.22); }

.rail-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 8px;
  color: #A9C0D4;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.05em;
  line-height: 1.4;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.rail-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 0;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: height 0.22s var(--ease);
}
.rail-link__num {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--steel);
  min-width: 18px;
  transition: color 0.2s var(--ease);
}
.rail-link__name { white-space: nowrap; }
.rail-link:hover { color: var(--paper); background: rgba(55, 230, 217, 0.08); }
.rail-link:hover .rail-link__num { color: var(--cyan); }
.rail-link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(55, 230, 217, 0.11);
  font-weight: 700;
}
.rail-link[aria-current="page"] .rail-link__num { color: var(--cyan); }
.rail-link[aria-current="page"]::before { height: 68%; }

.rail-extras {
  display: grid;
  gap: 6px;
  margin-top: 4px;
  padding-top: 14px;
  border-top: 1px dashed rgba(120, 146, 171, 0.34);
}
.rail-extras__label {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--steel);
  margin-bottom: 2px;
  max-width: none;
}
.rail-extra {
  padding: 9px 12px;
  border: 1px solid rgba(120, 146, 171, 0.42);
  border-radius: var(--radius);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.rail-extra:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(55, 230, 217, 0.08);
}

.frame-rail__note {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed rgba(120, 146, 171, 0.28);
  font-size: 10.5px;
  line-height: 1.75;
  color: #7F98B0;
  letter-spacing: 0.02em;
  max-width: none;
}

.rail-scrim {
  position: fixed;
  inset: var(--frame-top-h) 0 0 0;
  z-index: 70;
  background: rgba(3, 12, 22, 0.68);
}
.rail-scrim[hidden] { display: none; }

body.is-nav-open { overflow: hidden; }

@media (min-width: 1024px) {
  .frame-rail {
    width: var(--rail-w);
    padding: 22px 10px 26px;
    transform: none;
    visibility: visible;
    box-shadow: none;
    border-right: 1px solid rgba(120, 146, 171, 0.34);
  }
  .frame-rail__note { font-size: 10px; }
  .rail-extras { display: none; }
  .rail-scrim { display: none; }
  body.is-nav-open { overflow: auto; }
}

/* ---------- 通用容器与面板 ---------- */
.shell {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(16px, 3.2vw, 40px);
}
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 24px);
}
.stack { display: grid; gap: clamp(16px, 2.4vw, 28px); }

.panel {
  position: relative;
  padding: clamp(18px, 3vw, 32px);
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
}
.panel .lede { color: #34495C; }
.panel__index {
  display: block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--sea-800);
}
.panel--sea {
  background: linear-gradient(150deg, #0E3355 0%, var(--sea-800) 60%, #08223A 100%);
  color: var(--paper);
  border-color: rgba(55, 230, 217, 0.42);
  box-shadow: var(--shadow-deep);
}
.panel--sea .panel__index { color: var(--cyan); }
.panel--sea .lede { color: #C4D6E5; }

.eyebrow {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--cyan);
  max-width: none;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  line-height: 1.2;
}
.lede {
  font-size: clamp(1rem, 1.25vw, 1.125rem);
  line-height: 1.85;
  color: #C4D6E5;
  max-width: 64ch;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.4;
  box-shadow: 5px 5px 0 rgba(6, 26, 46, 0.6);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 rgba(6, 26, 46, 0.6); }
.btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 rgba(6, 26, 46, 0.6); }
.btn--accent { background: var(--orange); color: #241406; }
.btn--accent:hover { background: var(--amber); }
.btn--cyan { background: var(--cyan); color: var(--ink); }
.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--cyan);
  box-shadow: 5px 5px 0 rgba(55, 230, 217, 0.22);
}
.btn--ghost:hover { background: rgba(55, 230, 217, 0.1); box-shadow: 8px 8px 0 rgba(55, 230, 217, 0.26); }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding-top: 20px; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}
.breadcrumb__item { display: flex; align-items: center; gap: 8px; }
.breadcrumb__item:not(:last-child)::after { content: "/"; color: rgba(120, 146, 171, 0.55); }
.breadcrumb__link { color: #A9C0D4; transition: color 0.18s var(--ease); }
.breadcrumb__link:hover { color: var(--cyan); }
.breadcrumb__current { color: var(--cyan); }

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  line-height: 1.6;
}
.tag--cyan { color: var(--cyan); }
.tag--orange { color: var(--orange); }
.tag--mint { color: var(--mint); }
.tag--coral { color: var(--coral); }
.panel .tag--cyan { color: #0F7E77; }

/* ---------- 图片 / 示意图容器（页面阶段使用） ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 2px solid rgba(7, 18, 29, 0.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  background:
    radial-gradient(120% 90% at 12% 8%, rgba(55, 230, 217, 0.22) 0%, rgba(55, 230, 217, 0) 55%),
    radial-gradient(120% 100% at 92% 96%, rgba(255, 156, 74, 0.24) 0%, rgba(255, 156, 74, 0) 60%),
    linear-gradient(140deg, #0E3355 0%, #08223A 55%, #061A2E 100%);
}
.media-frame__img,
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 8px 12px;
  background: rgba(6, 26, 46, 0.74);
  color: var(--mist);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.09em;
  line-height: 1.6;
  max-width: none;
}

/* ---------- 章节定位与显现 ---------- */
[data-chapter] { scroll-margin-top: calc(var(--frame-top-h) + 20px); }
[data-chapter]:focus { outline: none; }

.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.has-js [data-reveal].is-visible { opacity: 1; transform: none; }

.is-current { color: var(--cyan); }

/* ---------- 返回顶部（JS 注入） ---------- */
.to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 78;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--sea-800);
  color: var(--cyan);
  border: 2px solid var(--cyan);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 rgba(3, 12, 22, 0.65);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  line-height: 1.4;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), visibility 0.24s var(--ease);
}
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: rgba(55, 230, 217, 0.14); }
.to-top__mark { font-size: 13px; line-height: 1; }
@media (min-width: 1024px) { .to-top { right: 26px; bottom: 26px; } }

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 7vw, 104px);
  background: linear-gradient(180deg, #0A2440 0%, var(--sea-800) 45%, #08203A 100%);
  border-top: 2px solid rgba(55, 230, 217, 0.42);
  color: var(--mist);
}
.site-footer::before {
  content: "";
  display: block;
  height: 6px;
  background: repeating-linear-gradient(90deg, rgba(55, 230, 217, 0.85) 0 22px, transparent 22px 44px);
  opacity: 0.42;
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(28px, 4vw, 52px) clamp(16px, 3.2vw, 40px) 24px;
}

.footer-top {
  display: grid;
  gap: 10px;
  padding-bottom: 24px;
  border-bottom: 1px dashed rgba(120, 146, 171, 0.4);
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  line-height: 1.45;
  color: var(--paper);
  letter-spacing: 0.02em;
  max-width: 34ch;
}
.footer-brand__sep { color: var(--cyan); margin: 0 0.2em; }
.footer-summary {
  font-size: 14px;
  line-height: 1.8;
  color: #A9C0D4;
  max-width: 62ch;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(22px, 3vw, 34px) 0;
}
@media (min-width: 820px) {
  .footer-grid { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
}

.footer-heading {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
  margin-bottom: 12px;
  max-width: none;
}

.footer-nav__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 520px) {
  .footer-nav__list { grid-template-columns: 1fr 1fr; column-gap: 20px; }
}
.footer-nav__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(120, 146, 171, 0.18);
  color: #B9CCDE;
  font-size: 13.5px;
  letter-spacing: 0.03em;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-nav__link:hover { color: var(--paper); border-bottom-color: var(--cyan); }
.footer-nav__link[aria-current="page"] { color: var(--cyan); border-bottom-color: rgba(55, 230, 217, 0.5); }
.footer-nav__num {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.footer-contact__list { display: grid; gap: 12px; }
.footer-contact__row {
  display: grid;
  gap: 2px;
  padding-left: 12px;
  border-left: 2px solid rgba(55, 230, 217, 0.4);
}
.footer-contact__key {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--steel);
}
.footer-contact__val {
  font-family: var(--font-num);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
  line-height: 1.6;
}
.footer-contact__val--text { font-family: var(--font-body); letter-spacing: 0.03em; }

.footer-note {
  margin-top: 16px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 156, 74, 0.45);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  background: rgba(255, 156, 74, 0.09);
  color: #F2D9C3;
  font-size: 12.5px;
  line-height: 1.75;
  max-width: 46ch;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
  padding-top: 18px;
  border-top: 1px solid rgba(120, 146, 171, 0.3);
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: #8AA3BA;
}
.footer-bottom__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  max-width: none;
}
.footer-bottom__dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--steel);
  display: inline-block;
}
.footer-bottom__sign { max-width: none; }

/* ---------- 降低动效 ---------- */
@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;
  }
  .has-js [data-reveal] { opacity: 1; transform: none; }
  .frame-rail { transition: none; }
}