/* ============================================================
   三亿赛场 · 共享样式 /assets/site.css
   轨道导览 + 夜灯控制台 · 粗野主义展签语言
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --c-space: #050B18;
  --c-console: #0B1F3A;
  --c-panel: #12345A;
  --c-cyan: #28E0FF;
  --c-orange: #FF6A2A;
  --c-paper: #F4F1EA;
  --c-cool: #8A9BB0;
  --c-ink: #02040A;
  --c-mint: #7CFFCB;
  --c-warn: #FFD166;

  --rail-w: 0px;
  --signal-h: 48px;
  --gutter: clamp(18px, 4vw, 56px);

  --edge: 2px solid var(--c-ink);
  --hard: 6px 6px 0 0 var(--c-ink);
  --hard-sm: 4px 4px 0 0 var(--c-ink);
  --tr: 0.18s ease-out;

  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (min-width: 768px) {
  :root { --rail-w: 88px; --signal-h: 44px; }
}
@media (min-width: 1024px) {
  :root { --rail-w: 200px; }
}
@media (min-width: 1200px) {
  :root { --rail-w: 240px; }
}

/* ---------- 2. 重置与基础排版 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--signal-h) + 18px);
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

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

body {
  min-height: 100vh;
  background: var(--c-space);
  color: var(--c-paper);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.8;
  padding-left: var(--rail-w);
  padding-top: var(--signal-h);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-sans);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(34px, 5vw, 64px); }
h2 { font-size: clamp(26px, 3.4vw, 42px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); }
p { line-height: 1.85; }

/* ---------- 3. 焦点与动效偏好 ---------- */
:where(a, button, summary, [tabindex]):focus:not(:focus-visible) { outline: none; }
:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px var(--c-ink);
}
main:focus { outline: none; }
main:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -6px;
}

@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;
  }
}

@keyframes signalPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* ---------- 4. 工具类 ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.t-mono { font-family: var(--font-mono); letter-spacing: 0.04em; }
.t-display { font-family: var(--font-display); font-weight: 900; line-height: 1.08; letter-spacing: 0.01em; }
.t-sans { font-family: var(--font-sans); font-weight: 900; }

/* ---------- 5. 版式骨架 ---------- */
.container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
@media (min-width: 720px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 860px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.stack > * + * { margin-top: 1em; }

/* ---------- 6. 页头：跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--c-cyan);
  color: var(--c-ink);
  font-weight: 900;
  font-size: 14px;
  text-decoration: none;
  border: var(--edge);
  box-shadow: var(--hard-sm);
  transform: translateY(-220%);
  transition: transform var(--tr);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 7. 页头：外壳 ---------- */
.site-header {
  position: fixed;
  inset: 0;
  z-index: 80;
  pointer-events: none;
}
.site-header > * { pointer-events: auto; }

/* ---------- 8. 页头：信号条 ---------- */
.signal-bar {
  position: absolute;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: var(--signal-h);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 70px 0 16px;
  background: linear-gradient(90deg, #0B1F3A 0%, #061a33 58%, #050B18 100%);
  border-bottom: var(--edge);
  border-left: var(--edge);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  overflow: hidden;
  z-index: 1;
}
.signal-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--c-orange);
  box-shadow: 0 0 0 2px rgba(255, 106, 42, 0.28);
  animation: signalPulse 2.6s ease-in-out infinite;
}
.signal-text {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: 11px;
  line-height: 1.4;
  color: #bfe9f5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.signal-links { display: none; gap: 16px; flex: 0 0 auto; margin-left: auto; }
.signal-link {
  color: var(--c-paper);
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--tr), border-color var(--tr);
}
.signal-link:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan); }
.signal-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-orange));
  z-index: 2;
}

@media (min-width: 768px) {
  .signal-bar { padding: 0 16px; }
  .signal-links { display: flex; }
  .signal-text { font-size: 11.5px; }
}

/* ---------- 9. 页头：移动开关 ---------- */
.nav-toggle {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: var(--signal-h);
  background: var(--c-orange);
  color: var(--c-ink);
  border-left: var(--edge);
  border-bottom: var(--edge);
  transition: background-color var(--tr);
}
.nav-toggle:hover { background: #ff7d45; }
.nav-toggle-lines { display: grid; gap: 4px; width: 20px; }
.nav-toggle-line {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--c-ink);
  transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}
.site-header[data-open="true"] .nav-toggle-line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle-line:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle-line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle-text {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
@media (min-width: 768px) {
  .nav-toggle { display: none; }
}

/* ---------- 10. 页头：品牌轨道 ---------- */
.rail {
  position: absolute;
  top: var(--signal-h);
  left: 0;
  bottom: 0;
  z-index: 3;
  width: min(320px, 86vw);
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0B1F3A 0%, #07182c 55%, #050B18 100%);
  border-right: var(--edge);
  box-shadow: 8px 0 0 0 rgba(2, 4, 10, 0.55);
  transform: translateX(-102%);
  transition: transform 0.22s ease-out;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.site-header[data-open="true"] .rail { transform: translateX(0); }

.rail-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  text-decoration: none;
  color: var(--c-paper);
  border-bottom: var(--edge);
  background: rgba(40, 224, 255, 0.05);
  transition: background-color var(--tr);
}
.rail-brand:hover { background: rgba(40, 224, 255, 0.13); }
.brand-mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: var(--c-cyan);
  color: var(--c-ink);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  line-height: 1;
  border: var(--edge);
  box-shadow: 2px 2px 0 0 var(--c-ink);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-latin {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--c-cool);
  white-space: nowrap;
}

.rail-nav { flex: 1 1 auto; padding: 12px 0; }
.rail-list { display: flex; flex-direction: column; gap: 2px; }
.rail-item { display: block; }
.rail-link {
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  color: #c8d6e6;
  text-decoration: none;
  border-left: 4px solid transparent;
  transition: color var(--tr), background-color var(--tr), border-color var(--tr);
}
.rail-link:hover {
  color: #ffffff;
  background: rgba(40, 224, 255, 0.09);
  border-left-color: var(--c-cyan);
}
.rail-link[aria-current="page"] {
  color: #ffffff;
  background: rgba(18, 52, 90, 0.92);
  border-left-color: var(--c-orange);
}
.rail-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-cool);
}
.rail-link[aria-current="page"] .rail-index { color: var(--c-orange); }
.rail-label {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.02em;
}

.rail-foot {
  margin-top: auto;
  display: grid;
  gap: 10px;
  padding: 14px;
  border-top: var(--edge);
  background: rgba(2, 4, 10, 0.38);
}
.rail-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  color: var(--c-mint);
}
.rail-status::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--c-mint);
  box-shadow: 0 0 0 2px var(--c-ink);
}
.rail-status-text { letter-spacing: 0.04em; }
.rail-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  text-decoration: none;
  background: var(--c-orange);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.02em;
  border: var(--edge);
  box-shadow: var(--hard-sm);
  transition: box-shadow var(--tr), background-color var(--tr);
}
.rail-cta:hover { box-shadow: var(--hard); background: #ff7d45; }
.rail-cta-text { white-space: nowrap; }
.rail-cta-arrow { font-family: var(--font-mono); font-size: 14px; line-height: 1; }

.rail-scrim {
  position: fixed;
  inset: 0;
  z-index: 2;
  background: rgba(2, 4, 10, 0.74);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-out;
}
.site-header[data-open="true"] .rail-scrim { opacity: 1; pointer-events: auto; }

@media (max-width: 767px) {
  html.is-nav-open,
  html.is-nav-open body { overflow: hidden; }
}

@media (min-width: 768px) {
  .rail {
    top: 0;
    width: var(--rail-w);
    transform: translateX(0);
    transition: none;
    box-shadow: 6px 0 0 0 rgba(2, 4, 10, 0.5);
  }
  .rail-brand { height: var(--signal-h); padding: 0 14px; }
  .rail-scrim { display: none; }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .brand-text { display: none; }
  .rail-brand { justify-content: center; padding: 0; }
  .rail-nav { padding: 8px 0; }
  .rail-link {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 0;
    padding: 15px 0;
  }
  .rail-index { font-size: 14px; letter-spacing: 0.04em; }
  .rail-label,
  .rail-cta-text,
  .rail-status-text {
    position: absolute;
    width: 1px; height: 1px;
    margin: -1px; padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
  }
  .rail-foot { padding: 12px 8px; gap: 8px; }
  .rail-status { justify-content: center; }
  .rail-cta { padding: 10px 4px; }
  .rail-cta-arrow { font-size: 15px; }
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 88px);
  padding: clamp(28px, 4vw, 48px) var(--gutter) clamp(20px, 3vw, 30px);
  background: linear-gradient(180deg, #061426 0%, #040a14 68%);
  border-top: var(--edge);
  box-shadow: inset 0 2px 0 0 rgba(40, 224, 255, 0.18);
  color: var(--c-paper);
  font-size: 15px;
  line-height: 1.75;
}

.footer-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 2px solid rgba(138, 155, 176, 0.28);
}
.footer-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}
.footer-tag::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--c-orange);
  box-shadow: 0 0 0 2px var(--c-ink);
}
.footer-tag--mono { color: var(--c-cool); }
.footer-tag--mono::before { background: var(--c-mint); }

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
}
@media (min-width: 900px) {
  .footer-grid {
    grid-template-columns: minmax(220px, 1.3fr) minmax(150px, 0.8fr) minmax(280px, 1.6fr);
  }
}
.footer-col { min-width: 0; }
.footer-col--brand { order: 0; }

.footer-brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--c-paper);
  text-decoration: none;
  transition: color var(--tr);
}
.footer-brand:hover { color: var(--c-cyan); }
.footer-brand-latin {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--c-cyan);
}
.footer-summary {
  max-width: 34ch;
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: #b9c8d8;
}
.footer-stamp {
  margin-top: 14px;
  padding-left: 10px;
  border-left: 3px solid var(--c-orange);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.65;
  letter-spacing: 0.03em;
  color: var(--c-cool);
}

.footer-heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.22em;
  line-height: 1.4;
  color: var(--c-cyan);
}
.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 14px;
}
.footer-link {
  display: inline-block;
  color: #c8d6e6;
  font-size: 14.5px;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--tr), border-color var(--tr);
}
.footer-link:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan); }

.footer-contact { display: grid; gap: 10px; }
.footer-contact li { display: grid; gap: 2px; }
.footer-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--c-cool);
}
.footer-mono {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--c-paper);
  word-break: break-word;
}
.footer-note {
  max-width: 46ch;
  margin-top: 14px;
  padding-top: 10px;
  border-top: 2px solid rgba(138, 155, 176, 0.22);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-cool);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 22px;
  margin-top: clamp(24px, 3vw, 38px);
  padding-top: 18px;
  border-top: 2px solid rgba(138, 155, 176, 0.28);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--c-cool);
}
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; }
.footer-legal .footer-link { font-family: var(--font-sans); font-size: 13px; letter-spacing: 0; }
.footer-meta { font-family: var(--font-mono); letter-spacing: 0.04em; }

/* ---------- 12. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 15px;
  line-height: 1.2;
  text-decoration: none;
  background: var(--c-paper);
  color: var(--c-ink);
  border: var(--edge);
  box-shadow: var(--hard-sm);
  transition: box-shadow var(--tr), background-color var(--tr), color var(--tr);
}
.btn:hover { box-shadow: var(--hard); }
.btn--primary { background: var(--c-orange); color: var(--c-ink); }
.btn--primary:hover { background: #ff7d45; }
.btn--signal { background: var(--c-cyan); color: var(--c-ink); }
.btn--signal:hover { background: #6aeaff; }
.btn--ghost {
  background: transparent;
  color: var(--c-paper);
  border-color: var(--c-cyan);
  box-shadow: 4px 4px 0 0 rgba(40, 224, 255, 0.35);
}
.btn--ghost:hover { background: rgba(40, 224, 255, 0.1); box-shadow: 6px 6px 0 0 rgba(40, 224, 255, 0.55); }
.btn--sm { padding: 8px 14px; font-size: 13px; }
.btn--lg { padding: 16px 28px; font-size: 17px; }

/* ---------- 13. 标签、眉标与卡片 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.5;
  background: var(--c-panel);
  color: var(--c-paper);
  border: var(--edge);
}
.tag--cyan { background: var(--c-cyan); color: var(--c-ink); }
.tag--orange { background: var(--c-orange); color: var(--c-ink); }
.tag--mint { background: var(--c-mint); color: var(--c-ink); }
.tag--warn { background: var(--c-warn); color: var(--c-ink); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  line-height: 1.4;
  color: var(--c-cyan);
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--c-orange); }
.section-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-cool);
}

.card {
  position: relative;
  padding: clamp(16px, 2vw, 24px);
  background: var(--c-console);
  border: var(--edge);
  box-shadow: var(--hard);
  transition: box-shadow var(--tr), border-color var(--tr);
}
.card:hover { border-color: var(--c-cyan); box-shadow: 8px 8px 0 0 var(--c-ink); }
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 2px solid rgba(138, 155, 176, 0.24);
}
.card-title { font-size: 20px; font-weight: 900; line-height: 1.25; }
.card-body { font-size: 15px; line-height: 1.8; color: #c2d0de; }
.card-meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-cool);
}

/* ---------- 14. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-cool);
}
.breadcrumb-list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb-item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb-item:not(:first-child)::before {
  content: "/";
  color: var(--c-orange);
  opacity: 0.75;
}
.breadcrumb-link {
  color: var(--c-cool);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--tr), border-color var(--tr);
}
.breadcrumb-link:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan); }
.breadcrumb-current { color: var(--c-paper); }

/* ---------- 15. 暖白长文面板 ---------- */
.prose {
  padding: clamp(20px, 3.2vw, 44px);
  background: var(--c-paper);
  color: #101a26;
  border: var(--edge);
  box-shadow: var(--hard);
  font-size: 16.5px;
  line-height: 1.9;
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 {
  margin-top: 1.8em;
  padding-bottom: 0.3em;
  font-size: clamp(22px, 2.6vw, 30px);
  color: #0a1a2b;
  border-bottom: 2px solid rgba(2, 4, 10, 0.16);
}
.prose h3 { margin-top: 1.4em; font-size: 19px; color: #0a1a2b; }
.prose p { color: #22303f; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }
.prose a { color: #0b4f7a; text-decoration: underline; text-underline-offset: 3px; }
.prose strong { font-weight: 900; }
.prose code {
  padding: 0.1em 0.35em;
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: rgba(2, 4, 10, 0.08);
}
.prose blockquote { padding-left: 1em; border-left: 4px solid var(--c-orange); color: #33445a; }

/* ---------- 16. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: linear-gradient(140deg, #0B1F3A 0%, #12345A 55%, #071426 100%);
  border: var(--edge);
  box-shadow: var(--hard);
}
.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--c-cool);
}

/* ---------- 17. 数据表 ---------- */
.data-table {
  width: 100%;
  background: var(--c-console);
  border: var(--edge);
  font-size: 14.5px;
}
.data-table th,
.data-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 2px solid rgba(138, 155, 176, 0.2);
}
.data-table thead th {
  background: var(--c-panel);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  text-transform: uppercase;
}
.data-table tbody tr:hover { background: rgba(40, 224, 255, 0.07); }
.data-table .num { font-family: var(--font-mono); text-align: right; }