/* ============================================================
   幻影平台官网 · 共享样式 /assets/site.css
   暗场路径块 + 奶油纸页块 · 荧光青路径高亮 · 暖沙金数据点缀
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h, 78px) + 1rem);
}

body { margin: 0; }

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }

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

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

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

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

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid #2FE8CE;
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- tokens ---------- */
:root {
  --ink-night: #1B1236;
  --ink-deep: #0D0A1C;
  --lake-blue: #1E7FBF;
  --lake-light: #79BEE8;
  --paper: #F6EFE2;
  --paper-deep: #EDE3D2;
  --paper-ink: #241A12;
  --cyber-cyan: #2FE8CE;
  --sand-gold: #E9B36A;
  --ember: #E2542C;
  --mist: #A8B6C6;

  --line-dark: rgba(246, 239, 226, 0.14);
  --line-paper: rgba(36, 26, 18, 0.16);

  --header-h: 78px;
  --header-h-compact: 62px;
  --shell: min(100% - 2.5rem, 1240px);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei", -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

/* ---------- 中文排版基线 ---------- */
body {
  font-family: var(--font-sans);
  font-size: clamp(15px, 0.4vw + 14px, 17px);
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--paper);
  background: var(--ink-deep);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

p { max-width: 38em; }

/* ---------- 通用工具 ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.82em;
  letter-spacing: 0.05em;
}

.container {
  width: var(--shell);
  margin-inline: auto;
}

.section { padding-block: clamp(3.25rem, 7vw, 6.5rem); }

.section--paper {
  background: var(--paper);
  color: var(--paper-ink);
}

.section--stage {
  background: var(--ink-night);
  color: var(--paper);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sand-gold);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.85;
}

.section--paper .eyebrow { color: var(--ember); }

.rule-line {
  height: 1px;
  border: 0;
  margin-block: 1.5rem;
  background: linear-gradient(90deg, rgba(47, 232, 206, 0.55), rgba(47, 232, 206, 0));
}

.section--paper .rule-line {
  background: linear-gradient(90deg, rgba(36, 26, 18, 0.35), rgba(36, 26, 18, 0));
}

/* ---------- 网格 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2.2vw, 2rem);
}

@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .grid-12 { grid-template-columns: 1fr; }
}

@media (min-width: 901px) {
  .span-4 { grid-column: span 4; }
  .span-5 { grid-column: span 5; }
  .span-6 { grid-column: span 6; }
  .span-7 { grid-column: span 7; }
  .span-8 { grid-column: span 8; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  transition: transform 0.22s var(--ease), background 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--sand-gold);
  color: #241A12;
  font-weight: 600;
}

.btn-primary:hover { background: #F2C489; }

.btn-blue {
  background: var(--lake-blue);
  color: #fff;
}

.btn-blue:hover { background: #2E93D6; }

.btn-ghost {
  border-color: rgba(246, 239, 226, 0.34);
  color: var(--paper);
}

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

.btn-consult {
  padding: 0.46rem 0.95rem;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  background: var(--lake-blue);
  color: #fff;
  border: 1px solid rgba(121, 190, 232, 0.45);
  transition: background 0.22s var(--ease), transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.btn-consult:hover {
  background: #2E93D6;
  border-color: var(--lake-light);
  transform: translateY(-1px);
}

/* ---------- 面包屑 ---------- */
.breadcrumb { padding-block: 1rem 0; }

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.breadcrumb-list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: rgba(168, 182, 198, 0.5);
}

.breadcrumb-link { color: inherit; }
.breadcrumb-link:hover { color: var(--cyber-cyan); }
.breadcrumb-current { color: var(--paper); }

.breadcrumb--paper .breadcrumb-list { color: rgba(36, 26, 18, 0.62); }
.breadcrumb--paper .breadcrumb-current { color: var(--paper-ink); }
.breadcrumb--paper .breadcrumb-link:hover { color: var(--lake-blue); }

/* ---------- 图片容器基础规则 ---------- */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  isolation: isolate;
  border-radius: 18px;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(circle at 22% 18%, rgba(47, 232, 206, 0.16), transparent 58%),
    linear-gradient(145deg, var(--ink-night), var(--ink-deep));
  box-shadow: inset 0 0 0 1px rgba(246, 239, 226, 0.08);
}

.img-frame--wide { aspect-ratio: 21 / 9; }
.img-frame--tall { aspect-ratio: 4 / 5; }

.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.03);
}

.img-frame::before,
.img-frame::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border: 1px solid var(--cyber-cyan);
  opacity: 0.7;
  z-index: 2;
  pointer-events: none;
}

.img-frame::before {
  top: 12px;
  left: 12px;
  border-right: 0;
  border-bottom: 0;
}

.img-frame::after {
  bottom: 12px;
  right: 12px;
  border-left: 0;
  border-top: 0;
}

.frame-corner {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--sand-gold);
}

.img-caption {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.section--paper .img-caption { color: rgba(36, 26, 18, 0.6); }

/* ---------- 标签筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(246, 239, 226, 0.24);
  color: rgba(246, 239, 226, 0.8);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.filter-btn:hover {
  border-color: var(--cyber-cyan);
  color: #fff;
  transform: translateY(-1px);
}

.filter-btn[aria-pressed="true"] {
  background: var(--cyber-cyan);
  border-color: transparent;
  color: #08131A;
  font-weight: 600;
}

.filter-bar--paper .filter-btn {
  border-color: rgba(36, 26, 18, 0.22);
  color: rgba(36, 26, 18, 0.72);
}

.filter-bar--paper .filter-btn:hover { border-color: var(--lake-blue); color: var(--paper-ink); }

.filter-bar--paper .filter-btn[aria-pressed="true"] {
  background: var(--lake-blue);
  color: #fff;
}

.filter-item {
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.filter-item[hidden] { display: none !important; }

/* ---------- 显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  left: 1rem;
  top: -120px;
  z-index: 300;
  padding: 0.7rem 1.1rem;
  border-radius: 0 0 10px 10px;
  background: var(--sand-gold);
  color: #241A12;
  font-size: 0.85rem;
  font-weight: 600;
  transition: top 0.25s var(--ease);
}

.skip-link:focus { top: 0; }

/* ============================================================
   页头
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(13, 10, 28, 0.82) 0%, rgba(13, 10, 28, 0.38) 60%, rgba(13, 10, 28, 0) 100%);
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.site-header[data-scrolled="true"] {
  background: rgba(27, 18, 54, 0.97);
  box-shadow: 0 1px 0 rgba(47, 232, 206, 0.18), 0 18px 42px -30px rgba(0, 0, 0, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.header-inner {
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.5rem);
  min-height: var(--header-h);
  transition: min-height 0.35s var(--ease);
}

.site-header[data-scrolled="true"] .header-inner {
  min-height: var(--header-h-compact);
}

.header-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(var(--progress, 0));
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyber-cyan), var(--sand-gold));
  opacity: 0.9;
  pointer-events: none;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex: 0 0 auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 12px;
  color: var(--cyber-cyan);
  border: 1px solid rgba(47, 232, 206, 0.32);
  background: radial-gradient(circle at 28% 20%, rgba(47, 232, 206, 0.22), rgba(30, 127, 191, 0.18));
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.brand:hover .brand-mark {
  border-color: var(--cyber-cyan);
  transform: translateY(-1px);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(168, 182, 198, 0.92);
}

.brand-rule {
  flex: 0 0 auto;
  width: clamp(20px, 5vw, 60px);
  height: 1px;
  opacity: 0.75;
  background: linear-gradient(90deg, var(--cyber-cyan), rgba(47, 232, 206, 0));
}

/* 导航 */
.site-nav { margin-inline: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 1.4vw, 1.35rem);
}

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.35rem 0.1rem 0.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: rgba(246, 239, 226, 0.74);
  transition: color 0.22s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0.24rem;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyber-cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.nav-link:hover { color: #fff; }

.nav-link:hover::after {
  transform: scaleX(0.62);
  opacity: 0.65;
}

.nav-link[aria-current="page"] {
  color: #fff;
  font-weight: 600;
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  box-shadow: 0 0 12px rgba(47, 232, 206, 0.85);
}

/* 移动端按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(246, 239, 226, 0.25);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--paper);
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.nav-toggle:hover { border-color: var(--cyber-cyan); color: var(--cyber-cyan); }

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}

.nav-toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

/* 右侧工具 */
.header-tools {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 0 0 auto;
}

.update-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(233, 179, 106, 0.42);
  background: rgba(233, 179, 106, 0.1);
  color: var(--sand-gold);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.update-badge:hover {
  background: rgba(233, 179, 106, 0.2);
  border-color: var(--sand-gold);
}

.update-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sand-gold);
  animation: badge-pulse 4s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%, 100% { opacity: 0.55; transform: scale(0.9); box-shadow: 0 0 0 0 rgba(233, 179, 106, 0.5); }
  50% { opacity: 1; transform: scale(1.15); box-shadow: 0 0 0 4px rgba(233, 179, 106, 0.12); }
}

.update-label { letter-spacing: 0.2em; }

.update-time {
  color: rgba(246, 239, 226, 0.68);
  letter-spacing: 0.08em;
}

/* 更新摘要面板 */
.update-panel {
  position: absolute;
  right: clamp(1rem, 4vw, 2.5rem);
  top: calc(var(--header-h-compact) + 0.5rem);
  z-index: 6;
  width: min(330px, calc(100vw - 2rem));
  padding: 1.05rem 1.15rem 1.15rem;
  border-radius: 16px;
  border-left: 3px solid var(--sand-gold);
  background: var(--paper);
  color: var(--paper-ink);
  box-shadow: 0 28px 55px -28px rgba(0, 0, 0, 0.85);
}

.update-panel-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ember);
  margin-bottom: 0.5rem;
}

.update-panel-body {
  font-size: 0.86rem;
  line-height: 1.75;
  color: rgba(36, 26, 18, 0.84);
}

.update-panel-link {
  display: inline-block;
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--lake-blue);
  border-bottom: 1px solid rgba(30, 127, 191, 0.4);
}

.update-panel-link:hover { color: var(--ember); border-color: var(--ember); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  overflow: hidden;
  padding: clamp(3rem, 6vw, 5rem) 0 1.5rem;
  background: linear-gradient(180deg, var(--ink-night) 0%, var(--ink-deep) 100%);
  color: rgba(246, 239, 226, 0.78);
  border-top: 1px solid rgba(47, 232, 206, 0.16);
}

.footer-glow {
  position: absolute;
  inset: auto -12% -62% 38%;
  height: 460px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(30, 127, 191, 0.34), transparent 62%);
}

.footer-inner {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr 1fr 1.55fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
}

.footer-brand { max-width: 30ch; }

.footer-logo {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--paper);
  margin-bottom: 0.75rem;
}

.footer-tagline {
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(246, 239, 226, 0.72);
}

.footer-cadence {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.1rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sand-gold);
}

.footer-cadence-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyber-cyan);
  box-shadow: 0 0 8px rgba(47, 232, 206, 0.8);
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 1rem;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-link {
  font-size: 0.88rem;
  color: rgba(246, 239, 226, 0.8);
  border-bottom: 1px solid transparent;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.footer-link:hover {
  color: var(--cyber-cyan);
  border-bottom-color: rgba(47, 232, 206, 0.55);
}

.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: rgba(168, 182, 198, 0.85);
}

.footer-contact-value {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--paper);
  word-break: break-all;
}

.footer-note {
  margin-top: 1rem;
  max-width: 34ch;
  font-size: 0.78rem;
  line-height: 1.75;
  color: rgba(168, 182, 198, 0.9);
  border-left: 1px solid rgba(233, 179, 106, 0.5);
  padding-left: 0.75rem;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: clamp(2rem, 4vw, 3.25rem);
  padding-top: 1.1rem;
  border-top: 1px solid rgba(246, 239, 226, 0.1);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(168, 182, 198, 0.9);
}

.footer-icp { color: rgba(168, 182, 198, 0.9); }
.footer-copy { color: rgba(168, 182, 198, 0.72); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .nav-link { font-size: 0.78rem; letter-spacing: 0.06em; }
  .update-time { display: none; }
}

@media (max-width: 960px) {
  .site-header[data-scrolled="true"] .header-inner { min-height: var(--header-h); }

  .nav-toggle { display: inline-flex; }
  .brand-rule { display: none; }
  .header-tools { margin-left: auto; }

  .site-nav {
    position: fixed;
    left: 1rem;
    right: 1rem;
    top: calc(var(--header-h) + 0.4rem);
    margin: 0;
    padding: 1.05rem 1.15rem 1.35rem;
    border-radius: 18px;
    border: 1px solid rgba(47, 232, 206, 0.2);
    background: rgba(13, 10, 28, 0.985);
    box-shadow: 0 34px 62px -32px rgba(0, 0, 0, 0.95);
    max-height: calc(100dvh - var(--header-h) - 1.5rem);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s var(--ease);
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.1rem;
  }

  .nav-link {
    display: block;
    padding: 0.72rem 0.5rem 0.85rem;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    border-bottom: 1px solid rgba(246, 239, 226, 0.08);
  }

  .nav-link::after {
    left: 0.5rem;
    bottom: 0.5rem;
    width: 20px;
  }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { max-width: none; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  :root { --header-h: 68px; }

  .brand-mark { width: 34px; height: 34px; }
  .brand-name { font-size: 0.94rem; }
  .brand-sub { font-size: 8px; letter-spacing: 0.18em; }

  .btn-consult { padding: 0.42rem 0.72rem; font-size: 0.72rem; letter-spacing: 0.08em; }
  .update-badge { padding: 0.38rem 0.55rem; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-meta { flex-direction: column; align-items: flex-start; }
  .update-panel { right: 0.75rem; left: 0.75rem; width: auto; }
}

@media (max-width: 380px) {
  .nav-toggle-label { display: none; }
  .update-label { display: none; }
}

/* ============================================================
   降低动态
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal { opacity: 1; transform: none; }
  .update-dot { animation: none; opacity: 1; }
}