/* ==========================================================
   时序隙庭 · 磨砂玻璃视觉系统（基础层）
   设计参考：参考图一 —— 悬浮胶囊式导航 + 全站玻璃质感
   内容约定：正文留空处以 <!-- TODO: ... --> 标注
   ========================================================== */

/* ---------------- 主题变量 ---------------- */
:root {
  /* 背景与玻璃 */
  --bg-1: #efe8fb;
  --bg-2: #e4e7fa;
  --bg-3: #f6ebf8;
  --accent-rgb: 168, 138, 246;
  --accent-rgb-2: 214, 168, 246;

  --glass: rgba(255, 255, 255, 0.48);
  --glass-2: rgba(255, 255, 255, 0.64);
  --glass-3: rgba(255, 255, 255, 0.32);
  --glass-brd: rgba(255, 255, 255, 0.72);
  --blur: 22px;
  --inset: inset 0 1px 0 rgba(255, 255, 255, 0.85);
  --sh-1: 0 10px 30px rgba(96, 76, 158, 0.14);
  --sh-2: 0 18px 50px rgba(96, 76, 158, 0.22);
  --glow: 0 0 22px rgba(var(--accent-rgb), 0.35);

  /* 排版对比度（磨砂玻璃底色偏亮，正文与弱化文字相应加深） */
  --ink: #261d42;
  --ink-2: #453a6b;
  --ink-3: #6d6291;
  --link: #5f3fc8;

  /* 描边 */
  --line: rgba(255, 255, 255, 0.6);
  --line-2: rgba(112, 88, 176, 0.18);

  /* 主色 */
  --a1: #7b5cf0;
  --a2: #b06ef0;
  --a3: #5b3fd0;
  --a-soft: rgba(123, 92, 240, 0.12);

  /* 形状 */
  --r-lg: 26px;
  --r-md: 18px;
  --r-sm: 12px;
  --r-pill: 999px;
  --header-h: 68px;

  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;

  color-scheme: light;
}

html[data-theme="dark"] {
  --bg-1: #191434;
  --bg-2: #241a48;
  --bg-3: #2c1c46;
  --accent-rgb: 178, 148, 255;
  --accent-rgb-2: 232, 170, 255;

  --glass: rgba(255, 255, 255, 0.08);
  --glass-2: rgba(255, 255, 255, 0.13);
  --glass-3: rgba(255, 255, 255, 0.05);
  --glass-brd: rgba(255, 255, 255, 0.16);
  --blur: 24px;
  --inset: inset 0 1px 0 rgba(255, 255, 255, 0.14);
  --sh-1: 0 10px 30px rgba(6, 3, 20, 0.34);
  --sh-2: 0 18px 50px rgba(6, 3, 20, 0.5);
  --glow: 0 0 24px rgba(var(--accent-rgb), 0.4);

  --ink: #f0e9ff;
  --ink-2: #d6cbf5;
  --ink-3: #a99cd0;
  --link: #c9aaff;

  --line: rgba(255, 255, 255, 0.12);
  --line-2: rgba(255, 255, 255, 0.09);

  --a1: #b18cff;
  --a2: #e0a8ff;
  --a3: #8b62ff;
  --a-soft: rgba(177, 140, 255, 0.16);

  color-scheme: dark;
}

/* ---------------- 基础重置 ---------------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  min-height: 100vh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg-1);
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.5s ease;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--link); text-decoration: none; transition: color 0.22s ease, opacity 0.22s ease; }
a:hover { color: var(--a2); }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }

::selection { background: rgba(var(--accent-rgb), 0.35); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(var(--accent-rgb), 0.42);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: rgba(var(--accent-rgb), 0.68); background-clip: content-box; }

/* ---------------- 全屏背景（纯 CSS 渐变 + 光斑，无需图片） ---------------- */
.bg-fixed {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 12% 6%, var(--bg-2) 0%, transparent 58%),
    radial-gradient(110% 80% at 88% 10%, var(--bg-3) 0%, transparent 62%),
    radial-gradient(140% 110% at 50% 108%, var(--bg-2) 0%, transparent 66%),
    linear-gradient(168deg, var(--bg-1) 0%, var(--bg-2) 52%, var(--bg-3) 100%);
}

.bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(58px);
  opacity: 0.62;
  will-change: transform;
}
.bg-blob.b1 {
  width: 46vw; height: 46vw; top: -12vw; left: -8vw;
  background: radial-gradient(circle at 40% 40%, rgba(var(--accent-rgb), 0.75), transparent 68%);
  animation: blob-a 26s ease-in-out infinite alternate;
}
.bg-blob.b2 {
  width: 38vw; height: 38vw; top: 8vw; right: -10vw;
  background: radial-gradient(circle at 60% 45%, rgba(var(--accent-rgb-2), 0.7), transparent 70%);
  animation: blob-b 31s ease-in-out infinite alternate;
}
.bg-blob.b3 {
  width: 42vw; height: 42vw; bottom: -14vw; left: 26vw;
  background: radial-gradient(circle at 50% 50%, rgba(var(--accent-rgb), 0.5), transparent 72%);
  animation: blob-c 37s ease-in-out infinite alternate;
}

@keyframes blob-a { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(4vw, 3vw, 0) scale(1.12); } }
@keyframes blob-b { from { transform: translate3d(0, 0, 0) scale(1.05); } to { transform: translate3d(-5vw, 4vw, 0) scale(1); } }
@keyframes blob-c { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(3vw, -4vw, 0) scale(1.1); } }

.bg-grain {
  position: absolute;
  inset: -50%;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.bg-veil {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0) 14%, rgba(255, 255, 255, 0.05));
}
html[data-theme="dark"] .bg-veil {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0) 18%, rgba(0, 0, 0, 0.18));
}

/* ---------------- 玻璃基元 ---------------- */
.glass {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--glass-brd);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1), var(--inset);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(180%);
  backdrop-filter: blur(var(--blur)) saturate(180%);
}

/* 玻璃顶部高光，制造"厚玻璃"观感 */
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0) 42%);
  opacity: 0.7;
}
html[data-theme="dark"] .glass::before {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0) 46%);
  opacity: 0.9;
}

/* 不支持 backdrop-filter 时的降级：提高不透明度 */
@supports not ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  :root { --glass: rgba(255, 255, 255, 0.86); --glass-2: rgba(255, 255, 255, 0.94); --glass-3: rgba(255, 255, 255, 0.74); }
  html[data-theme="dark"] { --glass: rgba(30, 22, 56, 0.9); --glass-2: rgba(38, 28, 68, 0.95); --glass-3: rgba(30, 22, 56, 0.8); }
}

/* ---------------- 顶部导航（参考图一：悬浮胶囊组） ---------------- */
.site-header {
  position: fixed;
  top: 12px;
  left: 0; right: 0;
  z-index: 120;
  padding: 0 clamp(10px, 2vw, 22px);
}

.header-inner {
  position: relative;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: var(--header-h);
  padding: 8px 12px;
  background: var(--glass-2);
  border: 1px solid var(--glass-brd);
  border-radius: var(--r-pill);
  box-shadow: var(--sh-1), var(--inset);
  -webkit-backdrop-filter: blur(24px) saturate(190%);
  backdrop-filter: blur(24px) saturate(190%);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

/* 品牌胶囊 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex: 0 0 auto;
  padding: 6px 16px 6px 12px;
  border-radius: var(--r-pill);
  background: var(--glass-2);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--inset);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.brand:hover { color: var(--a1); box-shadow: var(--inset), var(--glow); }
.brand-mark {
  width: 26px; height: 26px;
  flex: 0 0 auto;
  color: var(--a1);
  filter: drop-shadow(0 0 6px rgba(var(--accent-rgb), 0.55));
  animation: mark-float 7s ease-in-out infinite;
}
.brand-mark svg { width: 100%; height: 100%; }
@keyframes mark-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-2px) rotate(18deg); }
}

/* 主导航胶囊组 */
.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
  flex: 1 1 auto;
  min-width: 0;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.34rem;
  padding: 8px 12px 10px;
  border-radius: var(--r-pill);
  color: var(--ink-2);
  font-size: 0.95rem;
  white-space: nowrap;
  transition: background 0.22s ease, color 0.22s ease, transform 0.22s ease;
}
.nav-link svg { width: 17px; height: 17px; flex: 0 0 auto; opacity: 0.9; }
.nav-link:hover { background: var(--glass-3); color: var(--ink); transform: translateY(-1px); }
.nav-link.is-active {
  color: var(--a1);
  background: var(--a-soft);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.28), var(--inset);
}
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 5px;
  width: 20px; height: 2px;
  border-radius: 2px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--a1), var(--a2));
  opacity: 0.9;
}

.nav-sep {
  flex: 0 0 auto;
  width: 1px;
  height: 22px;
  margin: 0 6px;
  background: var(--line-2);
}

/* ---------- OC 栏目下拉（桌面悬停展开 / 移动端点击展开） ---------- */
.nav-item.has-sub { position: relative; display: inline-flex; align-items: center; }
.nav-caret { width: 13px !important; height: 13px !important; opacity: 0.7; transition: transform 0.24s ease; }
.nav-item.has-sub:hover .nav-caret,
.nav-item.has-sub.is-open .nav-caret { transform: rotate(180deg); }

.nav-sub {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  z-index: 130;
  min-width: 168px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-radius: var(--r-md);
  background: var(--glass-2);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--sh-2), var(--inset);
  -webkit-backdrop-filter: blur(24px) saturate(190%);
  backdrop-filter: blur(24px) saturate(190%);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -8px) scale(0.97);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
}
.nav-item.has-sub:hover .nav-sub,
.nav-item.has-sub:focus-within .nav-sub,
.nav-item.has-sub.is-open .nav-sub {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0) scale(1);
}
.nav-sub::before {
  content: "";
  position: absolute;
  top: -10px; left: 0; right: 0;
  height: 10px;
}
.nav-sub-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  color: var(--ink-2);
  font-size: 0.92rem;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}
.nav-sub-link svg { width: 16px; height: 16px; flex: 0 0 auto; opacity: 0.85; }
.nav-sub-link:hover { background: var(--glass-3); color: var(--ink); }
.nav-sub-link.is-active {
  color: var(--a1);
  background: var(--a-soft);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.26);
}

/* 右侧功能胶囊组 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  padding-left: 8px;
  margin-left: auto;
  border-left: 1px solid var(--line-2);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  color: var(--ink-2);
  transition: background 0.22s ease, color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn:hover { background: var(--glass-3); color: var(--a1); transform: translateY(-1px); box-shadow: var(--glow); }
.icon-btn:active { transform: scale(0.94); }

/* 刷新按钮旋转反馈 */
.icon-btn.is-spinning svg { animation: spin 0.6s ease; }
@keyframes spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }

.nav-toggle { display: none; }

/* ---------------- 布局容器 ---------------- */
.container {
  position: relative;
  max-width: 1160px;
  margin: 0 auto;
  padding: calc(var(--header-h) + 54px) 20px 40px;
}
.container.is-wide { max-width: 1320px; }
.container.is-narrow { max-width: 860px; }

.section { margin-bottom: 62px; }
.section:last-child { margin-bottom: 20px; }

.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.section-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.03em;
}
.section-title svg { width: 20px; height: 20px; color: var(--a1); }
.section-title::after {
  content: "";
  flex: 0 0 54px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--a1), transparent);
  margin-left: 4px;
}
.section-sub { font-size: 0.9rem; color: var(--ink-3); margin-left: auto; }

/* ---------------- 按钮与标签 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 9px 20px;
  border-radius: var(--r-pill);
  border: 1px solid var(--glass-brd);
  background: var(--glass-2);
  box-shadow: var(--inset);
  color: var(--ink);
  font-size: 0.94rem;
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease, color 0.22s ease;
}
.btn svg { width: 16px; height: 16px; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--sh-1), var(--inset), var(--glow); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn.is-primary {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(120deg, var(--a1), var(--a2));
  box-shadow: 0 8px 22px rgba(var(--accent-rgb), 0.34), var(--inset);
}
.btn.is-primary:hover { box-shadow: 0 12px 28px rgba(var(--accent-rgb), 0.44), var(--inset); }
.btn.is-ghost { background: transparent; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--glass-brd);
  background: var(--glass-3);
  box-shadow: var(--inset);
  color: var(--ink-2);
  font-size: 0.86rem;
  transition: all 0.22s ease;
}
.chip svg { width: 14px; height: 14px; }
.chip:hover { color: var(--a1); transform: translateY(-2px); box-shadow: var(--inset), var(--glow); }
.chip.is-active {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(120deg, var(--a1), var(--a2));
}
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------------- 页脚 ---------------- */
.site-footer {
  position: relative;
  margin-top: 40px;
  padding: 34px 24px 40px;
  text-align: center;
  background: var(--glass-3);
  border-top: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
}
.footer-quote {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--ink-2);
  margin-bottom: 10px;
}
.site-footer p { font-size: 0.86rem; color: var(--ink-3); }
.footer-links { margin-top: 8px; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 14px; }
.footer-links a { color: var(--ink-2); }
.footer-links a:hover { color: var(--a1); }
/* 备案号：法规要求在首页底部中间位置展示并链接到工信部查询页 */
.footer-icp {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px solid var(--glass-brd);
  font-size: 0.76rem !important;
  letter-spacing: 0.02em;
}
.footer-icp a { color: var(--ink-3); }
.footer-icp a:hover { color: var(--a1); }

/* ---------------- 返回顶部 ---------------- */
.back-top {
  position: fixed;
  right: 20px; bottom: 24px;
  width: 46px; height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--glass-brd);
  background: var(--glass-2);
  box-shadow: var(--sh-1), var(--inset);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  color: var(--a1);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
  transition: all 0.3s ease;
}
.back-top.show { opacity: 1; pointer-events: auto; transform: none; }
.back-top:hover { box-shadow: var(--sh-2), var(--inset), var(--glow); }
.back-top svg { width: 18px; height: 18px; }

/* ---------------- 提示气泡 ---------------- */
.toast {
  position: fixed;
  left: 50%; bottom: 40px;
  z-index: 200;
  max-width: min(86vw, 420px);
  padding: 10px 22px;
  border-radius: var(--r-pill);
  border: 1px solid var(--glass-brd);
  background: var(--glass-2);
  box-shadow: var(--sh-2), var(--inset);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  color: var(--ink);
  font-size: 0.9rem;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(18px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.is-error { color: #e0629b; }

/* ---------------- 玻璃对话框 ---------------- */
.dialog {
  position: fixed;
  inset: 0;
  z-index: 220;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(38, 28, 68, 0.34);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.dialog.is-open { display: flex; }
.dialog-card {
  width: min(420px, 100%);
  padding: 26px 24px 22px;
  border-radius: var(--r-lg);
  text-align: center;
  animation: pop 0.24s ease;
}
@keyframes pop { from { opacity: 0; transform: scale(0.94) translateY(10px); } to { opacity: 1; transform: none; } }
.dialog-card h3 { font-family: var(--font-serif); font-size: 1.15rem; margin-bottom: 8px; }
.dialog-card p { font-size: 0.92rem; color: var(--ink-3); margin-bottom: 20px; }
.dialog-actions { display: flex; justify-content: center; gap: 10px; }

/* ---------------- 内容排版 ---------------- */
.prose { font-size: 0.98rem; }
.prose h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--ink);
  margin: 34px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-2);
}
.prose h3 { font-size: 1.08rem; color: var(--ink-2); margin: 24px 0 10px; }
.prose p { margin-bottom: 14px; color: var(--ink-2); }
.prose ul { margin: 0 0 16px 4px; }
.prose li { position: relative; padding-left: 18px; margin-bottom: 8px; color: var(--ink-2); font-size: 0.95rem; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.72em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: linear-gradient(120deg, var(--a1), var(--a2));
}
.prose .lead { font-size: 1.02rem; color: var(--ink-2); }

/* 待填写占位 */
.todo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  border: 1px dashed rgba(var(--accent-rgb), 0.55);
  background: var(--a-soft);
  color: var(--a1);
  font-size: 0.8rem;
  font-style: normal;
  letter-spacing: 0.02em;
}
.todo-block {
  display: block;
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: 1px dashed rgba(var(--accent-rgb), 0.5);
  background: var(--a-soft);
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.7;
}
.todo-block strong { color: var(--a1); }

/* 通用占位框（等图片 / 等内容） */
.slot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  border-radius: var(--r-md);
  border: 1px dashed rgba(var(--accent-rgb), 0.5);
  background:
    repeating-linear-gradient(135deg, rgba(var(--accent-rgb), 0.1) 0 12px, rgba(var(--accent-rgb), 0.04) 12px 24px);
  color: var(--ink-3);
  font-size: 0.86rem;
  text-align: center;
  padding: 18px;
}

/* 说明块（替代原先的 TODO 提示，语气是“补充说明”而不是“待办”） */
.note-block {
  display: block;
  padding: 14px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--glass-brd);
  background: var(--glass-3);
  box-shadow: var(--inset);
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.75;
}
.note-block strong { color: var(--ink); }

/* ---------------- 滚动入场 ----------------
   默认可见（保证任何情况下内容都不会消失）；
   只有当页面脚本给 html 加上 .reveal-ready 后，才启用“先隐藏、再入场”的动效 */
.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal-ready [data-reveal].is-revealed { opacity: 1; transform: none; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1240px) {
  .nav-link { padding: 7px 10px; font-size: 0.9rem; gap: 0.28rem; }
  .nav-link svg { width: 16px; height: 16px; }
  .brand { font-size: 1rem; padding: 6px 13px 6px 10px; }
}

/* 平板及以下：导航收进玻璃抽屉（保留文字标签，避免只剩图标难以辨认） */
@media (max-width: 1040px) {
  :root { --header-h: 60px; }
  .site-header { top: 8px; padding: 0 10px; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 8px; right: 8px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    max-height: min(70vh, 520px);
    overflow-y: auto;
    padding: 10px;
    border-radius: var(--r-lg);
    background: var(--glass-2);
    border: 1px solid var(--glass-brd);
    box-shadow: var(--sh-2), var(--inset);
    -webkit-backdrop-filter: blur(30px) saturate(190%);
    backdrop-filter: blur(30px) saturate(190%);
    transform: translateY(-10px) scale(0.98);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.26s ease, transform 0.26s ease;
  }
  .nav-link span { display: inline; }
  .nav-link { padding: 11px 14px; font-size: 0.96rem; }
  .nav-link.is-active::after { left: 22px; transform: none; }
  .nav-sep { width: 100%; height: 1px; margin: 6px 0; }
  .site-header.is-open .site-nav { opacity: 1; transform: none; pointer-events: auto; }
  .container { padding-top: calc(var(--header-h) + 40px); }
  .site-nav { flex-wrap: nowrap; }

  /* 抽屉里的 OC 下拉改为内联展开 */
  .nav-item.has-sub { display: block; }
  .nav-item.has-sub .nav-link { width: 100%; }
  .nav-caret { margin-left: auto; }
  .nav-sub {
    position: static;
    left: auto;
    min-width: 0;
    margin: 2px 0 4px 14px;
    padding: 6px;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: var(--glass-3);
    box-shadow: none;
    display: none;
  }
  .nav-sub::before { display: none; }
  .nav-item.has-sub:hover .nav-sub { display: none; }
  .nav-item.has-sub.is-open .nav-sub { display: flex; }
  .nav-sub-link { padding: 10px 12px; }
}

@media (max-width: 640px) {
  /* 窄屏：隐藏品牌文字与装饰分隔线，保证导航按钮与搜索框都有位置 */
  .brand span:not(.brand-mark) { display: none; }
  .brand { padding: 6px 11px; }
  .header-actions { padding-left: 5px; }
  .icon-btn { width: 34px; height: 34px; }
  .nav-sep { display: none; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .container { padding-left: 14px; padding-right: 14px; }
  .container > *, .section > *, .card { min-width: 0; max-width: 100%; }
  .hero { padding: 20px 16px 24px; }
  .hero-sub { font-size: 0.94rem; }
  .form-panel, .article-wrap { padding: 18px 16px; }
  .brand { padding: 6px 10px; }
  .back-top { right: 14px; bottom: 16px; width: 42px; height: 42px; }
  .section { margin-bottom: 46px; }
}

/* ---------------- 后台入口（悬浮按钮，所有页面都有） ---------------- */
.admin-fab {
  position: fixed;
  left: 18px;
  bottom: 24px;
  z-index: 95;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px 9px 13px;
  border-radius: 999px;
  border: 1px solid rgba(var(--accent-rgb), 0.42);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 10px 26px rgba(96, 76, 158, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  color: var(--ink);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  opacity: 0.9;
  transition: opacity 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}
.admin-fab svg { width: 16px; height: 16px; color: var(--a1); flex: 0 0 auto; }
.admin-fab:hover {
  opacity: 1;
  transform: translateY(-2px);
  color: var(--a1);
  box-shadow: 0 14px 32px rgba(96, 76, 158, 0.3), inset 0 1px 0 #fff;
}
.admin-fab .fab-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--a1);
  box-shadow: 0 0 8px var(--a1);
}
.admin-fab.is-admin { border-color: rgba(47, 158, 107, 0.5); }
.admin-fab.is-admin .fab-dot { background: #2f9e6b; box-shadow: 0 0 8px #2f9e6b; }
html[data-theme="dark"] .admin-fab { background: rgba(28, 20, 48, 0.72); border-color: rgba(255, 255, 255, 0.2); }
html[data-oc-theme] .admin-fab { background: rgba(18, 12, 34, 0.66); border-color: rgba(255, 255, 255, 0.22); color: #fff; }
@media (max-width: 560px) {
  .admin-fab { left: 12px; bottom: 16px; padding: 8px 13px; font-size: 0.8rem; }
  .admin-fab .fab-text { display: none; }
}

/* ---------------- 无障碍 / 动效偏好 ---------------- */
:focus-visible {
  outline: 2px solid var(--a1);
  outline-offset: 2px;
  border-radius: 6px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal-ready [data-reveal] { opacity: 1; transform: none; }
}