/* ==========================================================================
   火博体育站 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   视觉体系：深夜战术室里的发光战术板
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  /* 色彩 */
  --ink: #0B0F0D;
  --moss: #12261F;
  --moss-mid: #1B3A2E;
  --lava: #FF6A1A;
  --lava-soft: #FFB27A;
  --verify: #46C79B;
  --pending: #E0A33C;
  --cool: #7E97A6;
  --deep-blue: #2E4B5E;
  --slate: #F2F5F3;
  --mist: #A9B6BD;

  --line: rgba(126, 151, 166, 0.26);
  --line-strong: rgba(126, 151, 166, 0.48);
  --hard-shadow: 6px 6px 0 rgba(46, 75, 94, 0.42);

  /* 字体 */
  --font-display: "Archivo Narrow", "Oswald", "Noto Sans SC", "Source Han Sans SC",
    "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas,
    "Liberation Mono", monospace;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;

  /* 字号阶梯 12 / 14 / 16 / 20 / 28 / 44 / 72 / 96 */
  --fs-12: 0.75rem;
  --fs-13: 0.8125rem;
  --fs-14: 0.875rem;
  --fs-16: 1rem;
  --fs-20: 1.25rem;
  --fs-28: clamp(1.5rem, 2.4vw, 1.75rem);
  --fs-44: clamp(2rem, 4.4vw, 2.75rem);
  --fs-72: clamp(3rem, 7vw, 4.5rem);
  --fs-96: clamp(3.5rem, 9vw, 6rem);

  /* 尺度 */
  --gutter: clamp(1rem, 3vw, 2.5rem);
  --shell-max: 1680px;
  --frame: 2px;
  --header-h: 72px;

  color-scheme: dark;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body,
h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, ul, ol, pre {
  margin: 0;
}

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

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

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

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

button {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
}

::selection {
  background: var(--lava);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--lava);
  outline-offset: 3px;
}

/* ---------- 3. 基础中文排版 ---------- */
body {
  background-color: var(--ink);
  color: var(--slate);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

strong, b { font-weight: 700; color: var(--slate); }

em { font-style: normal; color: var(--lava-soft); }

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--lava-soft);
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 300;
  transform: translateY(-130%);
  padding: 12px 20px;
  background: var(--lava);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline-offset: -4px;
}

/* ---------- 5. 框架式页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ink);
  border-bottom: var(--frame) solid var(--deep-blue);
  border-top: var(--frame) solid var(--deep-blue);
}

/* 视口左缘脊线 —— 让导航成为页面画框的一部分 */
.frame-spine {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--frame);
  height: 100vh;
  background: var(--deep-blue);
  z-index: 120;
  pointer-events: none;
}

.frame-spine::after {
  content: "";
  position: absolute;
  left: 0;
  top: 32%;
  width: var(--frame);
  height: 16%;
  background: var(--lava);
}

/* 战术板网格纹理 */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(126, 151, 166, 0.07) 1px, transparent 1px);
  background-size: 88px 100%;
  pointer-events: none;
  z-index: 0;
}

.header-bar {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 28px;
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 12px var(--gutter);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 1 auto;
  margin-right: auto;
  min-width: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border: var(--frame) solid var(--lava);
  background: var(--moss-mid);
  box-shadow: 4px 4px 0 var(--deep-blue);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--lava);
  transition: background-color 0.18s ease, box-shadow 0.18s ease, color 0.18s ease;
}

.brand:hover .brand__mark,
.brand:focus-visible .brand__mark {
  background: var(--lava);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--moss-mid);
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--slate);
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.4;
  color: var(--mist);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

/* 主导航 */
.site-nav {
  flex: 0 1 auto;
  position: relative;
  z-index: 2;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-display);
  font-size: var(--fs-16);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist);
  border-bottom: var(--frame) solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.site-nav__link:hover {
  color: var(--slate);
  border-bottom-color: var(--lava-soft);
  background: rgba(27, 58, 46, 0.5);
}

.site-nav__link[aria-current="page"] {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 9px 14px;
  border: var(--frame) solid var(--deep-blue);
  background: var(--moss-mid);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  border-color: var(--lava);
  color: var(--lava);
}

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 18px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
}

/* 状态区 */
.header-side {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 0 0 auto;
}

.status-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--deep-blue);
  background: var(--moss-mid);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.03em;
  color: var(--mist);
  margin: 0;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.status-pill__dot {
  display: block;
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--verify);
}

.status-pill[data-tone="pending"] .status-pill__dot { background: var(--pending); }
.status-pill[data-tone="lava"] .status-pill__dot { background: var(--lava); }

.status-pill:hover {
  border-color: var(--verify);
  color: var(--slate);
}

.status-pill::after {
  content: attr(data-status-tip);
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: max-content;
  max-width: 260px;
  padding: 7px 11px;
  background: var(--moss);
  border: 1px solid var(--deep-blue);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.02em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s;
  z-index: 8;
}

.status-pill:hover::after,
.status-pill:focus-within::after {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.sync-entry {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.03em;
  color: var(--lava-soft);
  padding-bottom: 3px;
  border-bottom: 1px solid var(--cool);
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.sync-entry:hover,
.sync-entry:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
  transform: translateX(2px);
}

.sync-entry__icon {
  display: inline-block;
  font-size: 0.95em;
  line-height: 1;
}

/* 词典索引带 */
.index-strip {
  position: relative;
  z-index: 1;
  background: var(--moss);
  border-top: 1px solid var(--moss-mid);
}

.index-strip__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--deep-blue) transparent;
}

.index-strip__inner::-webkit-scrollbar { height: 4px; }
.index-strip__inner::-webkit-scrollbar-thumb { background: var(--deep-blue); }

.index-strip__label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--cool);
  padding: 12px 12px 12px 0;
  border-right: 1px solid var(--moss-mid);
}

.index-strip__nav { flex: 0 0 auto; }

.index-strip__list {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.chip {
  display: block;
  white-space: nowrap;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.02em;
  color: var(--mist);
  border-bottom: var(--frame) solid transparent;
  border-right: 1px solid var(--moss-mid);
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.chip:hover,
.chip:focus-visible {
  color: var(--slate);
  background: var(--moss-mid);
  border-bottom-color: var(--lava);
}

.index-strip__cycle {
  flex: 0 0 auto;
  margin-left: auto;
  padding-left: 18px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.03em;
  color: var(--cool);
  white-space: nowrap;
}

/* 阅读进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: var(--frame);
  background: var(--lava);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
  z-index: 4;
}

/* ---------- 6. 通用容器与章节 ---------- */
.wrap {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

#main-content {
  display: block;
  scroll-margin-top: 140px;
}

.section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 28px);
  flex-wrap: wrap;
  margin-bottom: clamp(1.25rem, 2.5vw, 2.25rem);
  padding-bottom: 14px;
  border-bottom: var(--frame) solid var(--deep-blue);
}

.section__num {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.16em;
  color: var(--deep-blue);
  transition: color 0.3s ease;
}

[data-reveal].is-visible .section__num { color: var(--lava); }

.section__title {
  font-family: var(--font-display);
  font-size: var(--fs-44);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--slate);
}

.section__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--mist);
}

.band {
  background: var(--moss);
  border-top: var(--frame) solid var(--deep-blue);
  border-bottom: var(--frame) solid var(--deep-blue);
}

/* ---------- 7. 面板 / 按钮 / 面包屑 ---------- */
.panel {
  background: var(--moss-mid);
  border: var(--frame) solid var(--deep-blue);
  padding: clamp(1.1rem, 2.4vw, 1.9rem);
}

.panel--hard {
  box-shadow: var(--hard-shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border: var(--frame) solid var(--deep-blue);
  background: var(--moss-mid);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.03em;
  line-height: 1.2;
  transition: color 0.18s ease, border-color 0.18s ease,
    background-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  color: var(--lava-soft);
  border-color: var(--lava);
  box-shadow: 4px 4px 0 var(--deep-blue);
  transform: translate(-1px, -1px);
}

.btn--primary {
  background: var(--lava);
  border-color: var(--lava);
  color: var(--ink);
  font-weight: 700;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--lava-soft);
  border-color: var(--lava-soft);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--moss-mid);
}

.btn--ghost {
  background: transparent;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.02em;
  color: var(--mist);
}

.breadcrumbs a {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

.breadcrumbs__sep {
  color: var(--deep-blue);
  user-select: none;
}

.breadcrumbs [aria-current="page"] { color: var(--slate); }

/* 状态色标 */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--cool);
  vertical-align: middle;
}

.status-dot--verify { background: var(--verify); }
.status-dot--pending { background: var(--pending); }

/* ---------- 8. 正文与表格 ---------- */
.prose {
  max-width: 72ch;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: var(--fs-28);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 2em 0 0.6em;
  padding-left: 14px;
  border-left: var(--frame) solid var(--lava);
}

.prose h3 {
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 700;
  margin: 1.6em 0 0.5em;
  color: var(--slate);
}

.prose p,
.prose li {
  font-size: var(--fs-16);
  line-height: 1.75;
}

.prose ul,
.prose ol {
  margin: 0 0 1em;
  padding-left: 1.2em;
}

.prose ul li { list-style: square; }
.prose ol li { list-style: decimal; }
.prose li { margin-bottom: 0.4em; }

.prose a {
  color: var(--lava-soft);
  border-bottom: 1px solid var(--cool);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.prose a:hover,
.prose a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

.prose blockquote {
  margin: 1.5em 0;
  padding: 14px 20px;
  background: var(--moss);
  border-left: var(--frame) solid var(--lava);
  color: var(--mist);
  font-size: var(--fs-16);
}

.table {
  width: 100%;
  font-size: var(--fs-14);
  color: var(--slate);
}

.table caption {
  text-align: left;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--cool);
}

.table th,
.table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.table thead th {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--cool);
  border-bottom: var(--frame) solid var(--deep-blue);
  white-space: nowrap;
}

.table tbody tr {
  transition: background-color 0.16s ease, box-shadow 0.16s ease;
}

.table tbody tr:hover {
  background: var(--moss-mid);
  box-shadow: inset var(--frame) 0 0 var(--lava);
}

.table .num {
  font-family: var(--font-mono);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.table .num--xl {
  font-size: var(--fs-20);
  color: var(--lava);
}

/* ---------- 9. 图片容器基础规则 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--moss-mid);
  border: var(--frame) solid var(--deep-blue);
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.media:hover .media__img { transform: scale(1.02); }

.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 8px 12px;
  background: rgba(11, 15, 13, 0.86);
  border-top: 1px solid var(--deep-blue);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.02em;
  color: var(--mist);
}

.media--bare {
  border: 0;
  background: transparent;
  aspect-ratio: auto;
}

/* ---------- 10. 显现协议 ---------- */
html[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

html[data-js="on"] [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--moss);
  border-top: var(--frame) solid var(--lava);
  color: var(--mist);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 3vw, 2.6rem);
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3.6rem) var(--gutter) clamp(1.6rem, 3vw, 2.4rem);
}

.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 12px;
  border: var(--frame) solid var(--lava);
  background: var(--ink);
  color: var(--lava);
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1;
  box-shadow: 4px 4px 0 var(--deep-blue);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--slate);
  margin: 0 0 8px;
}

.footer-brand__line {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
  max-width: 34ch;
  margin: 0;
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--cool);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--deep-blue);
}

.footer-col__list li { margin-bottom: 6px; }

.footer-col__list a {
  display: inline-block;
  font-size: var(--fs-14);
  color: var(--mist);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.footer-col__list a:hover,
.footer-col__list a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
  transform: translateX(3px);
}

.footer-contact__list {
  display: grid;
  gap: 12px;
}

.footer-contact__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.footer-contact__item--stack {
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.footer-contact__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--cool);
}

.footer-contact__value {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--slate);
  word-break: break-all;
}

.footer-contact__value--wide {
  font-family: var(--font-body);
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--mist);
  word-break: normal;
}

.copy-btn {
  flex: 0 0 auto;
  padding: 4px 10px;
  border: 1px solid var(--deep-blue);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.copy-btn:hover,
.copy-btn:focus-visible {
  color: var(--lava);
  border-color: var(--lava);
}

.copy-btn.is-done {
  background: var(--lava);
  border-color: var(--lava);
  color: var(--ink);
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 16px var(--gutter) 22px;
  border-top: 1px solid var(--deep-blue);
}

.site-footer__copy,
.site-footer__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.03em;
  color: var(--cool);
}

/* ---------- 12. 响应式 ---------- */
@media (min-width: 720px) {
  .site-footer__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-contact {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1040px) {
  .site-footer__inner {
    grid-template-columns: minmax(230px, 1.5fr) repeat(3, minmax(130px, 1fr)) minmax(260px, 1.7fr);
    gap: clamp(1.6rem, 2.6vw, 3rem);
  }

  .footer-brand,
  .footer-contact {
    grid-column: auto;
  }
}

@media (max-width: 1200px) {
  .site-nav__link {
    padding: 10px 10px;
    font-size: var(--fs-14);
  }
}

@media (max-width: 980px) {
  .header-bar {
    gap: 12px 16px;
  }

  .nav-toggle {
    display: inline-flex;
    order: 2;
  }

  .site-nav {
    display: none;
    order: 10;
    flex: 1 0 100%;
    width: 100%;
    margin-top: 4px;
    border-top: 1px solid var(--moss-mid);
    padding-top: 6px;
  }

  .site-nav[data-open] {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    padding: 12px 14px;
    font-size: var(--fs-16);
    border-bottom: 1px solid var(--moss-mid);
    border-left: var(--frame) solid transparent;
  }

  .site-nav__link:hover {
    background: var(--moss-mid);
    border-bottom-color: var(--moss-mid);
    border-left-color: var(--lava-soft);
  }

  .site-nav__link[aria-current="page"] {
    background: var(--moss-mid);
    border-bottom-color: var(--moss-mid);
    border-left-color: var(--lava);
    border-bottom-width: 1px;
  }

  .header-side {
    order: 11;
    flex: 1 0 100%;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px 16px;
    padding-top: 4px;
    border-top: 1px solid var(--moss-mid);
    margin-top: 2px;
  }

  .status-pill::after { display: none; }

  .index-strip__cycle { display: none; }
}

@media (max-width: 640px) {
  .brand__mark {
    width: 36px;
    height: 36px;
    font-size: var(--fs-16);
  }

  .brand__name { font-size: var(--fs-16); }

  .brand__tagline {
    font-size: 11px;
    letter-spacing: 0;
  }

  .index-strip__label {
    padding-right: 10px;
    letter-spacing: 0.08em;
  }

  .chip {
    padding: 11px 14px;
    font-size: var(--fs-12);
  }

  .site-footer__base {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ---------- 13. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html[data-js="on"] [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .media:hover .media__img { transform: none; }
  .btn:hover { transform: none; }
  .footer-col__list a:hover { transform: none; }
  .sync-entry:hover { transform: none; }
}