/* =========================================================
   盛兴V1中国官网 · 共享样式表 /assets/site.css
   深空墨底 + 暖纸内容层 + 霓虹青 / 亮橙功能色
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 150px;
}

body { margin: 0; }

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

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

button { background: none; border: 0; }

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

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

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

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

/* ---------- 2. 设计变量 ---------- */
:root {
  --ink-950: #060B18;
  --ink-900: #0A1122;
  --panel-800: #0E1730;
  --panel-700: #16223F;
  --content-paper: #F2E9DA;
  --paper-soft: #E8DDCA;
  --paper-line: #DED2BE;
  --neon-cyan: #2BE3DA;
  --cyan-ink: #0A6E6B;
  --signal-amber: #FF8A3D;
  --aurora-violet: #7C6CFF;
  --mist-blue: #A8C1E0;
  --slate-body: #C3CDDE;
  --slate-dim: #8593AC;
  --signal-green: #4BD98F;
  --ink-text: #1B2233;
  --ink-text-soft: #3C4A61;

  --font-sans: "PingFang SC", "HarmonyOS Sans", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;

  --shell: 1280px;
  --gutter: clamp(1rem, 4vw, 3rem);

  --radius-lg: 18px;
  --radius: 12px;
  --radius-sm: 8px;

  --line-dark: rgba(168, 193, 224, 0.16);
  --line-paper: var(--paper-line);
  --glass: rgba(14, 23, 48, 0.72);
  --shadow-lift: 0 20px 48px -28px rgba(0, 0, 0, 0.9);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版与页面底色 ---------- */
body {
  background: var(--ink-950);
  color: var(--slate-body);
  font-family: var(--font-sans);
  font-size: clamp(16px, 0.42vw + 14.6px, 18px);
  font-weight: 400;
  line-height: 1.75;
  overflow-x: hidden;
  padding-bottom: calc(68px + env(safe-area-inset-bottom));
  text-rendering: optimizeLegibility;
}

/* 极细网格 + 冰雪雾纹，仅作背景 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(43, 227, 218, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 227, 218, 0.055) 1px, transparent 1px),
    radial-gradient(circle at 78% 12%, rgba(124, 108, 255, 0.16), transparent 52%),
    radial-gradient(circle at 12% 82%, rgba(43, 227, 218, 0.10), transparent 48%);
  background-size: 72px 72px, 72px 72px, 100% 100%, 100% 100%;
}

main,
.site-header,
.site-footer { position: relative; z-index: 1; }

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: #F4F8FF;
  text-wrap: balance;
}

h1, .h1 { font-size: clamp(2.5rem, 6.4vw, 4.4rem); font-weight: 900; line-height: 1.02; letter-spacing: -0.03em; }
h2, .h2 { font-size: clamp(1.7rem, 3.6vw, 2.85rem); }
h3, .h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4, .h4 { font-size: clamp(1.05rem, 1.4vw, 1.25rem); letter-spacing: -0.01em; }

p { text-wrap: pretty; }

.mono {
  font-family: var(--font-mono);
  font-size: 0.86em;
  letter-spacing: 0.04em;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.section--paper :focus-visible,
.card--paper :focus-visible { outline-color: var(--cyan-ink); }

#main-content { outline: none; }

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -110px;
  z-index: 200;
  padding: 0.75rem 1.2rem;
  background: var(--neon-cyan);
  color: #04211F;
  font-size: 14px;
  font-weight: 800;
  border-radius: 0 0 10px 10px;
  transition: top 0.18s var(--ease);
}

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

/* ---------- 5. 容器与分段 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  z-index: 1;
  padding: clamp(2.75rem, 7vw, 5.5rem) 0;
}

.section--tight { padding: clamp(1.75rem, 4vw, 3rem) 0; }
.section--panel { background: var(--panel-800); }
.section--paper { background: var(--content-paper); color: var(--ink-text); }
.section--paper h1,
.section--paper h2,
.section--paper h3,
.section--paper h4 { color: #101B2E; }
.section--paper a { color: var(--cyan-ink); }
.section--paper a:hover { color: #06403E; }

/* ---------- 6. 头部骨架 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(6, 11, 24, 0.97), rgba(6, 11, 24, 0.88));
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-dark);
  color: var(--slate-body);
}

.header-strip {
  border-bottom: 1px solid rgba(168, 193, 224, 0.1);
  background: rgba(14, 23, 48, 0.6);
}

.header-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 34px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist-blue);
}

.strip-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.strip-item--live { color: #DDE7F6; }
.strip-item--note { color: var(--slate-dim); }

/* 状态点 */
.dot {
  display: inline-block;
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mist-blue);
}
.dot--cyan { background: var(--neon-cyan); box-shadow: 0 0 0 3px rgba(43, 227, 218, 0.18); }
.dot--amber { background: var(--signal-amber); box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.18); }
.dot--green { background: var(--signal-green); box-shadow: 0 0 0 3px rgba(75, 217, 143, 0.18); }
.dot--violet { background: var(--aurora-violet); box-shadow: 0 0 0 3px rgba(124, 108, 255, 0.18); }

/* 报头层 */
.masthead { padding: 0.85rem 0 0.75rem; }

.masthead__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.75rem;
}

.masthead__slot {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
}

.masthead__slot--start { justify-self: start; }
.masthead__slot--end { justify-self: end; }
.masthead__brand { justify-self: center; text-align: center; min-width: 0; }

/* 品牌标识 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #FFFFFF;
}

.brand__mark {
  position: relative;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(140deg, var(--neon-cyan), var(--aurora-violet) 58%, var(--signal-amber));
  box-shadow: 0 0 0 1px rgba(43, 227, 218, 0.35), 0 12px 26px -14px rgba(43, 227, 218, 0.85);
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 2px solid rgba(6, 11, 24, 0.85);
  border-bottom-color: transparent;
  border-left-color: transparent;
  border-radius: 3px;
  transform: rotate(45deg);
}

.brand__text { display: flex; align-items: baseline; gap: 0.5rem; min-width: 0; }

.brand__name {
  font-size: clamp(1.5rem, 4.4vw, 2.15rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1;
  color: #FFFFFF;
}

.brand__latin {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--neon-cyan);
  white-space: nowrap;
}

.brand__line {
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist-blue);
}

/* 栏目条 */
.site-nav {
  border-top: 1px solid var(--line-dark);
  background: rgba(6, 11, 24, 0.55);
}

.site-nav__inner { display: flex; justify-content: center; }

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(0.4rem, 1.8vw, 1.5rem);
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.8rem 0.4rem;
  font-size: 15px;
  font-weight: 700;
  color: var(--slate-body);
  transition: color 0.18s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  bottom: 0.42rem;
  height: 2px;
  background: var(--neon-cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease);
}

.site-nav__link:hover { color: #FFFFFF; }
.site-nav__link:hover::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--neon-cyan); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); background: var(--signal-amber); }
.site-nav__link[aria-current="page"] .site-nav__index { color: var(--signal-amber); }

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--slate-dim);
}

.site-nav__cta { display: none; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(43, 227, 218, 0.4);
  border-radius: 999px;
  background: rgba(14, 23, 48, 0.75);
  color: var(--mist-blue);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 3px; }

.nav-toggle__bars i {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--neon-cyan);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.site-header[data-open] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.site-header[data-open] .nav-toggle { border-color: var(--signal-amber); color: var(--signal-amber); }
.site-header[data-open] .nav-toggle__bars i { background: var(--signal-amber); }

/* 滚动进度线 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 90;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--signal-amber));
  transition: width 0.12s linear;
}

/* ---------- 7. 底部固定快捷栏 ---------- */
.dock { display: none; }

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, rgba(14, 23, 48, 0.7), rgba(6, 11, 24, 1));
  border-top: 1px solid var(--line-dark);
  color: var(--slate-body);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.6fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2rem, 4vw, 3.25rem);
}

.footer__col { min-width: 0; }

.footer__title {
  margin-bottom: 0.9rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px dashed rgba(168, 193, 224, 0.24);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--mist-blue);
}

.footer__list { display: grid; gap: 0.1rem; }

.footer__link {
  display: inline-block;
  padding: 0.34rem 0;
  font-size: 14.5px;
  color: var(--slate-body);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.footer__link:hover { color: var(--neon-cyan); transform: translateX(3px); }

.brand--footer .brand__mark { width: 28px; height: 28px; border-radius: 8px; }
.brand--footer .brand__name { font-size: 1.5rem; }

.footer__line {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--neon-cyan);
}

.footer__note {
  margin-top: 0.6rem;
  max-width: 32ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-blue);
}

.footer__contact { display: grid; gap: 0.35rem; }

.contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.contact-line__label {
  flex: none;
  padding: 0.12rem 0.42rem;
  border-radius: 4px;
  background: rgba(168, 193, 224, 0.12);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--mist-blue);
}

.contact-line__value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: #E7EEF9;
  overflow-wrap: anywhere;
}

.contact-line--address .contact-line__value { font-family: var(--font-sans); font-size: 14px; }

.copy-btn {
  flex: none;
  padding: 0.2rem 0.55rem;
  border: 1px solid rgba(43, 227, 218, 0.35);
  border-radius: 6px;
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.copy-btn:hover { background: rgba(43, 227, 218, 0.14); }
.copy-btn[data-copied] { border-color: var(--signal-green); color: var(--signal-green); background: rgba(75, 217, 143, 0.12); }

.footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  padding: 1.15rem 0 1.6rem;
  border-top: 1px solid var(--line-dark);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist-blue);
}

.footer__legal { color: var(--slate-body); }
.footer__meta { color: var(--slate-dim); }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: clamp(0.75rem, 2vw, 1.5rem);
  bottom: calc(84px + env(safe-area-inset-bottom));
  z-index: 80;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(43, 227, 218, 0.4);
  border-radius: 50%;
  background: rgba(14, 23, 48, 0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 16px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease);
}

.to-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.16s var(--ease), background-color 0.18s var(--ease),
              color 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--signal-amber);
  color: #1B1206;
  box-shadow: 0 14px 32px -18px rgba(255, 138, 61, 0.95);
}
.btn--primary:hover { background: #FFA362; }

.btn--ghost {
  border-color: rgba(43, 227, 218, 0.45);
  background: rgba(43, 227, 218, 0.06);
  color: var(--neon-cyan);
}
.btn--ghost:hover { background: rgba(43, 227, 218, 0.16); border-color: var(--neon-cyan); color: #EAFEFC; }

.btn--paper { background: var(--ink-text); color: var(--content-paper); }
.btn--paper:hover { background: #10182B; }

.btn--sm { padding: 0.5rem 0.92rem; font-size: 12.5px; }
.btn--wide { width: 100%; }

/* ---------- 10. 内容排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--neon-cyan);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.75;
}

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

.lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.25vw, 1.12rem);
  line-height: 1.8;
  color: var(--slate-body);
}

.section--paper .lede { color: var(--ink-text-soft); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: clamp(1.25rem, 3vw, 2.25rem);
}

.section-head__text { max-width: 64ch; }

.section-title {
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: #F4F8FF;
}

.section--paper .section-title { color: #101B2E; }

/* 等宽刻度分隔条 */
.rule {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist-blue);
}

.rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(90deg, rgba(168, 193, 224, 0.38) 0 6px, transparent 6px 14px);
}

.section--paper .rule { color: #6B7789; }
.section--paper .rule::after {
  background: repeating-linear-gradient(90deg, rgba(27, 34, 51, 0.3) 0 6px, transparent 6px 14px);
}

/* 网格 */
.grid { display: grid; gap: clamp(1rem, 2.4vw, 1.75rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* 卡片 */
.card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  background: var(--panel-800);
}

.card--glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.card--paper {
  border-color: var(--paper-line);
  border-radius: var(--radius-lg);
  background: #FBF6EC;
  color: var(--ink-text);
}

.card__title { font-size: 1.15rem; font-weight: 800; color: #EFF4FC; }
.card--paper .card__title { color: #101B2E; }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.62rem;
  border: 1px solid rgba(168, 193, 224, 0.28);
  border-radius: 999px;
  background: rgba(168, 193, 224, 0.06);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist-blue);
}

.tag--cyan { border-color: rgba(43, 227, 218, 0.42); background: rgba(43, 227, 218, 0.1); color: var(--neon-cyan); }
.tag--amber { border-color: rgba(255, 138, 61, 0.42); background: rgba(255, 138, 61, 0.1); color: var(--signal-amber); }
.tag--violet { border-color: rgba(124, 108, 255, 0.42); background: rgba(124, 108, 255, 0.1); color: #AFA6FF; }

/* 状态徽标 */
.status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--slate-body);
}

/* 索引行 */
.index-list {
  display: grid;
  border-top: 1px solid var(--line-dark);
}

.index-list__item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 0.9rem 0.25rem;
  border-bottom: 1px solid var(--line-dark);
}

.section--paper .index-list,
.section--paper .index-list__item { border-color: var(--paper-line); }

/* 可展开内容组 */
.disclosure {
  margin-bottom: 0.7rem;
  border: 1px solid var(--line-dark);
  border-left: 3px solid rgba(168, 193, 224, 0.25);
  border-radius: var(--radius);
  background: rgba(14, 23, 48, 0.6);
  transition: border-left-color 0.22s var(--ease), background-color 0.22s var(--ease);
}

.disclosure[data-open] {
  border-left-color: var(--neon-cyan);
  background: rgba(14, 23, 48, 0.92);
}

.disclosure__toggle {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  text-align: left;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  color: #EAF1FB;
  cursor: pointer;
}

.disclosure__sign {
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--neon-cyan);
  transition: transform 0.22s var(--ease);
}

.disclosure[data-open] .disclosure__sign { transform: rotate(45deg); }

.disclosure__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.22s var(--ease);
}

.disclosure[data-open] .disclosure__panel { grid-template-rows: 1fr; }

.disclosure__inner { overflow: hidden; }

.disclosure__body {
  padding: 0 1.1rem 1.15rem;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--slate-body);
}

.section--paper .disclosure,
.card--paper .disclosure { border-color: var(--paper-line); background: #FBF6EC; }
.section--paper .disclosure[data-open],
.card--paper .disclosure[data-open] { border-left-color: var(--cyan-ink); background: #FFFFFF; }
.section--paper .disclosure__toggle,
.card--paper .disclosure__toggle { color: #101B2E; }
.section--paper .disclosure__sign,
.card--paper .disclosure__sign { color: var(--cyan-ink); }
.section--paper .disclosure__body,
.card--paper .disclosure__body { color: var(--ink-text-soft); }

/* 筛选条 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
}

.filter-btn {
  padding: 0.45rem 0.85rem;
  border: 1px solid rgba(168, 193, 224, 0.28);
  border-radius: 999px;
  color: var(--mist-blue);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.filter-btn:hover { border-color: var(--neon-cyan); color: var(--neon-cyan); }

.filter-btn[aria-pressed="true"] {
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  color: #04211F;
}

.filter-count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist-blue);
}

[data-filter-item].is-filtered-out { display: none !important; }

/* ---------- 11. 图片容器基础规则 ---------- */
.media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, #0E1730 0%, #0A1122 58%, #141F3B 100%);
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media__glyph {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(43, 227, 218, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 227, 218, 0.14) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.75;
}

.media__glow {
  position: absolute;
  width: 68%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  filter: blur(46px);
  opacity: 0.5;
  background: radial-gradient(circle, rgba(124, 108, 255, 0.85), transparent 65%);
}

.media img,
.media picture img,
.media svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media__caption {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist-blue);
}

/* ---------- 12. 面包屑与长文 ---------- */
.breadcrumb {
  padding: 1rem 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist-blue);
}

.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }

.breadcrumb__list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: rgba(168, 193, 224, 0.5);
}

.breadcrumb a:hover { color: var(--neon-cyan); }
.breadcrumb [aria-current="page"] { color: var(--slate-body); }

.prose { max-width: 72ch; }
.prose p + p { margin-top: 1rem; }
.prose h2 { margin-top: 2.4rem; }
.prose h3 { margin-top: 1.8rem; }

.prose ul { display: grid; gap: 0.5rem; margin: 1rem 0; }

.prose ul li {
  position: relative;
  padding-left: 1.15rem;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 2px;
  background: var(--neon-cyan);
}

.section--paper .prose ul li::before { background: var(--cyan-ink); }

/* ---------- 13. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

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

/* ---------- 14. 响应式：平板 ---------- */
@media (max-width: 1023px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .footer__col:nth-child(2) { transform: translateY(18px); }
  .footer__col:nth-child(3) { transform: translateY(34px); }
}

/* ---------- 15. 响应式：移动与竖屏平板 ---------- */
@media (max-width: 860px) {
  html { scroll-padding-top: 120px; }

  .masthead { padding: 0.7rem 0 0.6rem; }
  .masthead__slot--start .btn,
  .masthead__slot--end .btn { display: none; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    border-top: 1px solid var(--line-dark);
    background: rgba(6, 11, 24, 0.985);
    box-shadow: var(--shadow-lift);
    transition: max-height 0.28s var(--ease), visibility 0.28s;
  }

  .site-header[data-open] .site-nav {
    max-height: min(78vh, 660px);
    overflow-y: auto;
    visibility: visible;
  }

  .site-nav__inner { display: block; padding: 0.6rem 0 1.4rem; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__item { border-bottom: 1px solid rgba(168, 193, 224, 0.1); }

  .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 1rem 0.25rem;
    font-size: 20px;
    font-weight: 800;
  }

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

  .site-nav__link[aria-current="page"] {
    padding-left: 0.9rem;
    border-left: 3px solid var(--signal-amber);
  }

  .site-nav__cta {
    display: grid;
    gap: 0.6rem;
    margin-top: 1.2rem;
  }

  .dock {
    display: block;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    padding-bottom: env(safe-area-inset-bottom);
    border-top: 1px solid var(--line-dark);
    background: rgba(6, 11, 24, 0.94);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
  }

  .dock__list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .dock__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    padding: 0.6rem 0.25rem 0.7rem;
    color: var(--mist-blue);
    font-size: 11px;
    letter-spacing: 0.04em;
  }

  .dock__item[aria-current="page"] { color: var(--neon-cyan); }

  .dock__icon { font-family: var(--font-mono); font-size: 14px; line-height: 1; }
  .dock__label { line-height: 1.2; }
}

@media (min-width: 861px) {
  body { padding-bottom: 0; }
  .to-top { bottom: clamp(1rem, 3vw, 1.75rem); }
}

@media (max-width: 560px) {
  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 1.9rem; }
  .header-strip__inner { font-size: 10.5px; }
  .brand__latin { display: none; }
  .header-strip .strip-item--note { display: none; }
}

/* ---------- 16. 降低动效偏好 ---------- */
@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;
  }

  [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress { transition: none; }
}