/* ==========================================================================
   亿德体育入口 — 共享外壳样式 / assets/site.css
   夜间战术板：深墨绿长卷 + 荧光青刻度 + 信号橙行动点
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  font-size: 100%;
}
html[data-fontsize="l"] { font-size: 112.5%; }
html[data-fontsize="s"] { font-size: 93.75%; }

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --c-bg: #0B2B26;
  --c-bg-deep: #061A17;
  --c-surface: #14382F;
  --c-surface-2: #0E2F28;
  --c-line: #2E5B52;
  --c-text: #EAF6F1;
  --c-text-dim: #9DBFB4;
  --c-accent: #24F0C8;
  --c-accent-soft: #7FF7DF;
  --c-accent-ink: #04231D;
  --c-action: #FF6A2B;
  --c-action-soft: #FFB08A;
  --c-action-ink: #2B0C02;
  --c-paper: #F4F1E6;
  --c-paper-ink: #10251F;

  --r-sm: .5rem;
  --r-md: 1rem;
  --r-lg: 1.75rem;
  --r-pill: 999px;

  --shell-w: 1240px;
  --gap: 1.25rem;

  --font-display: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", Georgia, "SimSun", serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", "DejaVu Sans Mono", Menlo, Consolas, monospace;
}

html[data-theme="light"] {
  --c-bg: #F4F1E6;
  --c-bg-deep: #E7E2D2;
  --c-surface: #FFFDF4;
  --c-surface-2: #EFEADB;
  --c-line: #C6C0AC;
  --c-text: #10251F;
  --c-text-dim: #4C5F58;
  --c-accent: #0E8A72;
  --c-accent-soft: #0B6B59;
  --c-accent-ink: #F2FFFB;
  --c-action: #E15512;
  --c-action-soft: #FFC7A6;
  --c-action-ink: #FFF6F0;
}

/* ---------- 3. 基础排版 ---------- */
body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  letter-spacing: .01em;
  font-kerning: normal;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.015em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.4rem, 6.2vw, 4.2rem); font-weight: 900; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }

p { text-wrap: pretty; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  font-weight: 500;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-accent);
}

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

.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;
}

/* ---------- 4. 容器与栅格 ---------- */
.shell {
  width: min(var(--shell-w), calc(100% - 2.5rem));
  margin-inline: auto;
}

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }

@media (max-width: 960px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--split { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .grid--2, .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 5. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: .6rem; left: .6rem;
  z-index: 200;
  transform: translateY(-200%);
  background: var(--c-accent);
  color: var(--c-accent-ink);
  font-weight: 700;
  font-size: .9rem;
  padding: .6rem 1.1rem;
  border-radius: var(--r-pill);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--c-bg-deep);
  border-bottom: 1px solid var(--c-line);
}

.header-band--upper {
  background-image: repeating-linear-gradient(
    90deg,
    rgba(36, 240, 200, .07) 0 1px,
    transparent 1px 96px
  );
  border-bottom: 1px solid var(--c-line);
  padding-block: .6rem;
  transition: padding .28s cubic-bezier(.22, .8, .28, 1);
}

.header-upper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  min-width: 0;
}
.brand__mark {
  flex: none;
  width: 2.4rem; height: 2.4rem;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(140deg, var(--c-accent), #12856C);
  color: var(--c-accent-ink);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.15rem;
  line-height: 1;
  transition: width .28s ease, height .28s ease, font-size .28s ease;
}
.brand__text { display: flex; flex-direction: column; min-width: 0; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.02rem;
  letter-spacing: -.01em;
  line-height: 1.2;
  white-space: nowrap;
}
.brand__tagline {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--c-text-dim);
  white-space: nowrap;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--c-text-dim);
  padding: .3rem .85rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: var(--c-surface-2);
}
.status-dot {
  width: .5rem; height: .5rem;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 0 rgba(36, 240, 200, .55);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(36, 240, 200, .5); }
  70%  { box-shadow: 0 0 0 .55rem rgba(36, 240, 200, 0); }
  100% { box-shadow: 0 0 0 0 rgba(36, 240, 200, 0); }
}

.header-utility {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  flex-wrap: wrap;
}
.utility-link {
  font-size: .82rem;
  color: var(--c-text-dim);
  padding: .3rem .2rem;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.utility-link:hover { color: var(--c-accent); border-bottom-color: var(--c-accent); }

.icon-btn {
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--c-accent);
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  padding: .3rem .7rem;
  line-height: 1.4;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.icon-btn:hover { background: rgba(36, 240, 200, .12); border-color: var(--c-accent); }
.icon-btn[aria-pressed="true"] {
  background: var(--c-accent);
  color: var(--c-accent-ink);
  border-color: var(--c-accent);
}

.header-band--lower {
  background: rgba(11, 43, 38, .94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding-block: .5rem;
}
html[data-theme="light"] .header-band--lower { background: rgba(244, 241, 230, .94); }

.header-lower {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.site-nav { flex: 1 1 auto; min-width: 0; }

.nav-list {
  display: flex;
  align-items: center;
  gap: .18rem;
  flex-wrap: wrap;
}
.nav-list__item { display: block; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: .55rem .95rem .7rem;
  border-radius: var(--r-pill);
  font-size: .92rem;
  font-weight: 500;
  color: var(--c-text-dim);
  transition: color .18s ease, background .18s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: .95rem; right: .95rem; bottom: .34rem;
  height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s cubic-bezier(.22, .8, .28, 1);
}
.nav-link:hover { color: var(--c-text); background: rgba(36, 240, 200, .08); }
.nav-link:hover::after { transform: scaleX(.55); }
.nav-link[aria-current="page"] {
  color: var(--c-accent);
  background: rgba(36, 240, 200, .1);
  font-weight: 700;
}
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.header-cta { flex: none; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  padding: .5rem .9rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  color: var(--c-text);
  font-size: .85rem;
  letter-spacing: .08em;
}
.nav-toggle__bars { display: flex; flex-direction: column; gap: 4px; width: 18px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--c-accent);
  border-radius: 2px;
  transition: transform .22s ease, opacity .22s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.header-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  overflow: hidden;
  display: block;
}
.header-progress::after {
  content: "";
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--c-accent), var(--c-action));
  transform: scaleX(var(--p, 0));
  transform-origin: left;
  transition: transform .1s linear;
}

/* 收缩态 */
.site-header[data-condensed="true"] .header-band--upper { padding-block: .22rem; }
.site-header[data-condensed="true"] .brand__tagline,
.site-header[data-condensed="true"] .header-status { display: none; }
.site-header[data-condensed="true"] .brand__mark { width: 1.85rem; height: 1.85rem; font-size: .95rem; border-radius: 9px; }
.site-header[data-condensed="true"] .brand__name { font-size: .95rem; }

@media (max-width: 1080px) {
  .header-status { display: none; }
}

@media (max-width: 960px) {
  .header-lower { flex-wrap: wrap; padding-block: .45rem; }
  .nav-toggle { display: inline-flex; order: 1; }
  .header-cta { order: 2; margin-left: auto; }
  .site-nav {
    order: 3;
    flex-basis: 100%;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .34s cubic-bezier(.22, .8, .28, 1), opacity .22s ease;
  }
  .site-nav[data-open] { max-height: 32rem; opacity: 1; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; padding-block: .4rem; }
  .nav-link {
    display: block;
    border-radius: var(--r-md);
    padding: .8rem .95rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--c-line);
  }
  .nav-link::after { left: 0; right: auto; bottom: .35rem; width: 2.2rem; }
  .nav-list__item:last-child .nav-link { border-bottom: 0; }
}

@media (max-width: 560px) {
  .header-cta { display: none; }
  .header-utility { gap: .3rem; }
  .utility-link { font-size: .78rem; }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--c-bg-deep);
  border-top: 1px solid var(--c-line);
  padding-block: clamp(2.6rem, 5vw, 4.2rem) 1.6rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.7fr;
  gap: clamp(1.5rem, 3vw, 3rem);
}

.footer-col { min-width: 0; }

.footer__brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -.01em;
  line-height: 1.3;
}
.footer__desc {
  margin-top: .7rem;
  font-size: .9rem;
  color: var(--c-text-dim);
  max-width: 34ch;
}
.footer__icp {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--c-accent);
}

.footer__title {
  font-family: var(--font-display);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: .95rem;
}

.route-list li {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding-block: .38rem;
  border-bottom: 1px dashed var(--c-line);
}
.route-list a {
  font-size: .92rem;
  color: var(--c-text);
  transition: color .18s ease, transform .18s ease;
  display: inline-block;
}
.route-list a:hover { color: var(--c-accent); transform: translateX(3px); }
.route-index {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--c-text-dim);
  letter-spacing: .08em;
}

.contact-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .7rem;
  align-items: baseline;
  padding-block: .4rem;
  border-bottom: 1px dashed var(--c-line);
}
.contact-key {
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--c-text-dim);
  white-space: nowrap;
}
.contact-val {
  font-size: .88rem;
  color: var(--c-text);
  word-break: break-word;
}

.footer__update {
  display: flex;
  align-items: center;
  gap: .7rem;
  flex-wrap: wrap;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding: .85rem 1.15rem;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-action);
  border-radius: var(--r-md);
  background: var(--c-surface-2);
  font-size: .88rem;
  color: var(--c-text-dim);
}

.tag {
  display: inline-flex;
  align-items: center;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  padding: .18rem .6rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-line);
  color: var(--c-text-dim);
  white-space: nowrap;
}
.tag--action {
  background: rgba(255, 106, 43, .16);
  border-color: var(--c-action-soft);
  color: var(--c-action-soft);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--c-line);
}
.footer__note {
  font-size: .78rem;
  letter-spacing: .02em;
  color: var(--c-text-dim);
}
.footer__note--dim { opacity: .78; }

@media (max-width: 1000px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .footer__grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- 8. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: clamp(.9rem, 3vw, 2rem);
  bottom: clamp(.9rem, 3vw, 2rem);
  z-index: 70;
  width: 3.1rem; height: 3.1rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--c-line);
  background: var(--c-surface);
  color: var(--c-accent);
  font-size: 1.15rem;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .24s ease, transform .24s ease, background .2s ease;
}
.to-top[data-visible="true"] { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--c-surface-2); }
.to-top::before {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: conic-gradient(var(--c-accent) calc(var(--p, 0) * 360deg), transparent 0);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 2px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 2px));
  pointer-events: none;
}
.to-top__glyph { font-family: var(--font-mono); font-weight: 500; }

/* ---------- 9. 按钮与胶囊 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .72rem 1.25rem;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .01em;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--action { background: var(--c-action); color: var(--c-action-ink); }
.btn--action:hover { background: var(--c-action-soft); }
.btn--accent { background: var(--c-accent); color: var(--c-accent-ink); }
.btn--accent:hover { background: var(--c-accent-soft); }
.btn--ghost { border-color: var(--c-line); color: var(--c-text); background: transparent; }
.btn--ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }
.btn--sm { padding: .5rem .95rem; font-size: .85rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .42rem .95rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-line);
  background: var(--c-surface-2);
  color: var(--c-text-dim);
  font-size: .84rem;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.chip:hover { color: var(--c-text); border-color: var(--c-accent-soft); }
.chip[aria-pressed="true"] {
  background: rgba(36, 240, 200, .14);
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: .3rem .8rem;
  border-radius: var(--r-pill);
  background: var(--c-accent);
  color: var(--c-accent-ink);
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
}

/* ---------- 10. 分区与章节 ---------- */
.section { padding-block: clamp(3rem, 7vw, 6rem); }
.section--tight { padding-block: clamp(2rem, 4vw, 3.2rem); }

.section--paper {
  background: var(--c-paper);
  color: var(--c-paper-ink);
  --c-text: #10251F;
  --c-text-dim: #4C5F58;
  --c-line: #C9C3B0;
  --c-surface: #FFFDF4;
  --c-surface-2: #EFEADB;
  --c-accent: #0B7A64;
  --c-accent-soft: #0E8A72;
  --c-accent-ink: #F2FFFB;
  --c-action: #D9530F;
  --c-action-soft: #B4450C;
  --c-action-ink: #FFF6F0;
}

.chapter { scroll-margin-top: 7.5rem; }

.chapter__head { display: flex; flex-direction: column; gap: .8rem; max-width: 62ch; }

.chapter__num {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--c-accent);
}
.chapter__num::after {
  content: "";
  width: 3.5rem;
  height: 2px;
  background: var(--c-accent);
  transform-origin: left;
}
.chapter__title { font-size: clamp(1.7rem, 3.8vw, 2.6rem); }
.chapter__lede {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.85;
  color: var(--c-text-dim);
  max-width: 46ch;
}

.chapter-nav { display: flex; flex-wrap: wrap; gap: .4rem; }
.chapter-nav__link {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .04em;
  padding: .4rem .85rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-line);
  color: var(--c-text-dim);
  transition: color .16s ease, border-color .16s ease, opacity .16s ease;
}
.chapter-nav__link:hover { color: var(--c-accent); border-color: var(--c-accent-soft); }
.chapter-nav__link[aria-current] {
  color: var(--c-accent);
  border-color: var(--c-accent);
  background: rgba(36, 240, 200, .1);
}

.theme-band {
  display: flex;
  gap: 1rem;
  align-items: center;
  min-height: 96px;
  padding: 1.4rem clamp(1rem, 4vw, 2.5rem);
  overflow-x: auto;
  background: var(--c-surface-2);
  border-block: 1px solid var(--c-line);
  scrollbar-width: thin;
}

/* ---------- 11. 卡片与数据 ---------- */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  padding: clamp(1.1rem, 2.4vw, 1.7rem);
}
.card--flat { background: transparent; }
.card--action { border-left: 3px solid var(--c-action); }

.metric { display: flex; flex-direction: column; gap: .25rem; }
.metric__value {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--c-accent);
  line-height: 1.1;
}
.metric__label { font-size: .82rem; color: var(--c-text-dim); letter-spacing: .06em; }

/* ---------- 12. 面包屑与正文 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  color: var(--c-text-dim);
  padding-block: .9rem;
}
.crumbs li { display: inline-flex; align-items: center; gap: .5rem; }
.crumbs li + li::before { content: "/"; color: var(--c-line); }
.crumbs a:hover { color: var(--c-accent); }
.crumbs [aria-current="page"] { color: var(--c-accent); font-weight: 700; }

.prose { max-width: 68ch; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; }
.prose p { color: var(--c-text); line-height: 1.85; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose ul li { list-style: none; position: relative; padding-left: 1rem; margin-top: .5em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0; top: .72em;
  width: .6rem; height: 2px;
  background: var(--c-accent);
}
.prose ol { counter-reset: prose-ol; }
.prose ol li {
  list-style: none;
  position: relative;
  padding-left: 1.6rem;
  margin-top: .5em;
  counter-increment: prose-ol;
}
.prose ol li::before {
  content: counter(prose-ol, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--c-accent);
}
.prose blockquote {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.9;
  padding-left: 1.2rem;
  border-left: 3px solid var(--c-accent);
  color: var(--c-text-dim);
}
.prose hr { border: 0; border-top: 1px solid var(--c-line); }
.prose a { color: var(--c-accent); border-bottom: 1px solid currentColor; }

/* ---------- 13. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-line);
  background:
    repeating-linear-gradient(135deg, rgba(36, 240, 200, .07) 0 2px, transparent 2px 14px),
    var(--c-surface-2);
}
.media > img,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--21x9 { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--angled {
  clip-path: polygon(0 0, 100% 0, 100% 90%, 72% 100%, 0 100%);
  border-radius: var(--r-md);
}
.media__cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: .7rem 1rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--c-text);
  background: linear-gradient(180deg, transparent, rgba(6, 26, 23, .88));
}

/* ---------- 14. 显现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .45s cubic-bezier(.22, .8, .28, 1), transform .45s cubic-bezier(.22, .8, .28, 1);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 15. 无障碍与动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .header-progress::after { transition: none; }
}