/* ==========================================================================
   冠军娱乐馆 · e-guanjun.com.cn
   共享样式表 /assets/site.css
   基调：技术蓝图网格 · 深墨底 · 冠军金 × 霓虹青双强调
   ========================================================================== */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption,
blockquote, dl, dd, dt { margin: 0; }

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

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

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

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

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

[id] { scroll-margin-top: 88px; }

/* ---------- 变量 ---------- */
:root {
  /* 色板 */
  --ink:        #0A0C0F;
  --panel:      #12161C;
  --graphite:   #1C2229;
  --silver:     #D7DCE2;
  --fog:        #98A1AC;
  --fog-dim:    #6E7885;
  --gold:       #E8B23A;
  --gold-soft:  rgba(232, 178, 58, 0.45);
  --cyan:       #35DAD1;
  --cyan-soft:  rgba(53, 218, 209, 0.45);
  --green:      #4BD08B;
  --line:       #2A323B;
  --line-soft:  rgba(42, 50, 59, 0.55);
  --grid-line:  rgba(42, 50, 59, 0.30);

  /* 尺度 */
  --shell: 1240px;
  --gutter: 20px;
  --baseline: 8px;
  --header-h: 64px;

  /* 字体 */
  --font-head: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Source Han Sans SC", "Noto Sans SC", -apple-system,
               BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC",
                Georgia, "Times New Roman", serif;
  --font-body: var(--font-head);
  --font-mono: ui-monospace, SFMono-Regular, "IBM Plex Mono", Menlo,
               Consolas, "Courier New", monospace;

  /* 字号 */
  --fs-12: 12px;
  --fs-14: 14px;
  --fs-16: 16px;
  --fs-20: 20px;
  --fs-28: 28px;
  --fs-44: 44px;
  --fs-64: 64px;
}

/* ---------- 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--silver);
  background-color: var(--ink);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

p { overflow-wrap: break-word; }

::selection { background: var(--gold); color: #171104; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 1px;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--fog);
}

/* ---------- 布局容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.prose {
  max-width: 68ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--silver);
}

.prose > p + p { margin-top: 1em; }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 12px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--gold);
  color: #171104;
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: top 0.18s ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 12px;
  outline-offset: 3px;
}

/* ---------- 页头 / 紧凑命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(10, 12, 15, 0.94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.site-header::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg,
    var(--gold) 0 18%,
    var(--cyan) 18% 24%,
    var(--line) 24% 100%);
  opacity: 0.9;
}

.header-shell {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__mark {
  position: relative;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--ink));
  display: grid;
  place-items: center;
}

.brand__mark::before {
  content: "";
  width: 10px;
  height: 10px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.brand__mark::after {
  content: "";
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 4px;
  height: 4px;
  background: var(--cyan);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand__name {
  font-size: var(--fs-16);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--silver);
  white-space: nowrap;
}

.brand__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--fog-dim);
  text-transform: uppercase;
  white-space: nowrap;
}

/* 命令栏导航 */
.cmd-nav {
  justify-self: center;
  min-width: 0;
}

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

.cmd-nav__item { display: flex; }

.cmd-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid transparent;
  font-size: var(--fs-14);
  line-height: 1.4;
  color: var(--fog);
  white-space: nowrap;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.cmd-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--fog-dim);
  transition: color 0.18s ease;
}

.cmd-nav__link:hover,
.cmd-nav__link:focus-visible {
  color: var(--silver);
  border-color: var(--line);
  background: var(--panel);
}

.cmd-nav__link:hover .cmd-nav__idx,
.cmd-nav__link:focus-visible .cmd-nav__idx { color: var(--cyan); }

.cmd-nav__link[aria-current="page"] {
  color: var(--gold);
  border-color: var(--gold-soft);
  background: rgba(232, 178, 58, 0.07);
}

.cmd-nav__link[aria-current="page"] .cmd-nav__idx { color: var(--gold); }

.cmd-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -1px;
  height: 2px;
  background: var(--gold);
}

/* 右侧状态区 */
.header-status {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fog);
  white-space: nowrap;
}

.status-chip__dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(75, 208, 139, 0.16);
  animation: dot-pulse 2.4s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.35; }
}

.header-icp {
  display: inline-block;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--fog-dim);
  white-space: nowrap;
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--silver);
  font-size: var(--fs-14);
  line-height: 1.2;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 14px;
}

.nav-toggle__bars span {
  display: block;
  height: 1px;
  width: 100%;
  background: currentColor;
  transition: transform 0.18s ease;
}

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.nav-toggle:hover,
.nav-toggle:focus-visible { border-color: var(--cyan); color: var(--cyan); }

.site-header[data-open] .nav-toggle {
  color: var(--gold);
  border-color: var(--gold-soft);
}

.site-header[data-open] .nav-toggle__bars span:first-child {
  transform: translateY(2.5px) rotate(45deg);
}

.site-header[data-open] .nav-toggle__bars span:last-child {
  transform: translateY(-2.5px) rotate(-45deg);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 72px;
  background: var(--panel);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg,
    var(--gold) 0 12%,
    var(--cyan) 12% 16%,
    transparent 16%);
}

.footer-shell {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 32px 24px;
  padding-top: 56px;
  padding-bottom: 0;
}

.footer-brand { grid-column: span 3; }

.footer-brand__name {
  font-size: var(--fs-20);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.footer-brand__line {
  margin-top: 10px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--fog);
}

.footer-brand__icp {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--fog-dim);
}

.footer-col--nav   { grid-column: span 3; }
.footer-col--terms { grid-column: span 2; }
.footer-contact    { grid-column: span 4; }

.footer-col__title {
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.footer-col__list {
  display: grid;
  gap: 2px;
}

.footer-col__link {
  display: inline-block;
  padding: 5px 0;
  font-size: var(--fs-14);
  color: var(--fog);
  transition: color 0.18s ease;
}

.footer-col__link:hover,
.footer-col__link:focus-visible { color: var(--cyan); }

.footer-contact__row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 10px;
  padding: 6px 0;
  font-size: var(--fs-14);
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--fog-dim);
  padding-top: 3px;
}

.footer-contact__value {
  color: var(--silver);
  overflow-wrap: anywhere;
}

.footer-contact__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 16px 0 24px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fog-dim);
}

.footer-bottom__line,
.footer-bottom__meta { margin: 0; }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  background: var(--graphite);
  color: var(--silver);
  font-size: var(--fs-14);
  letter-spacing: 0.02em;
  line-height: 1.2;
  transition: color 0.18s ease, border-color 0.18s ease,
              background-color 0.18s ease;
}

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

.btn--gold {
  background: var(--gold);
  border-color: var(--gold);
  color: #171104;
  font-weight: 700;
}

.btn--gold:hover,
.btn--gold:focus-visible {
  background: #F2C250;
  border-color: #F2C250;
  color: #171104;
}

.btn--ghost {
  background: transparent;
}

/* ---------- 复制按钮 ---------- */
.copy-btn {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid var(--line);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--fog);
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.copy-btn[data-copied="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
}

.copy-btn[data-copied="true"]::after {
  content: "已复制";
  margin-left: 6px;
  color: var(--cyan);
}

/* ---------- 面包屑 ---------- */
.breadcrumb { padding-top: 20px; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--fog-dim);
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumb__link { color: var(--fog); transition: color 0.18s ease; }

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible { color: var(--cyan); }

.breadcrumb__sep { color: var(--line); }

.breadcrumb__current { color: var(--silver); }

/* ---------- 编号章节 ---------- */
.section {
  position: relative;
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 36px;
}

.section__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 64px);
  line-height: 0.9;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 1px var(--gold-soft);
}

@supports not (-webkit-text-stroke: 1px #000) {
  .section__num { color: var(--gold); }
}

.section__title {
  font-size: var(--fs-28);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--silver);
}

.section__lede {
  margin-top: 10px;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--fog);
}

/* ---------- 索引栏 ---------- */
.index-rail {
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.index-rail__item { display: block; }

.index-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -1px;
  padding: 8px 12px;
  border-left: 2px solid transparent;
  font-size: var(--fs-14);
  line-height: 1.5;
  color: var(--fog);
  transition: color 0.18s ease, border-color 0.18s ease,
              background-color 0.18s ease;
}

.index-rail__link:hover,
.index-rail__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

.index-rail__link[aria-current="true"] {
  color: var(--gold);
  border-left-color: var(--gold);
  background: rgba(232, 178, 58, 0.05);
}

.index-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fog-dim);
}

.index-rail__link:hover .index-rail__num,
.index-rail__link[aria-current="true"] .index-rail__num { color: inherit; }

/* ---------- 分段控件 ---------- */
.segmented {
  position: relative;
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  background: var(--panel);
  max-width: 100%;
  overflow-x: auto;
}

.segmented__list {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  min-width: 0;
}

.segmented__btn {
  padding: 9px 18px;
  font-size: var(--fs-14);
  line-height: 1.4;
  color: var(--fog);
  white-space: nowrap;
  transition: color 0.18s ease;
}

.segmented__btn:hover { color: var(--silver); }

.segmented__btn[aria-selected="true"] {
  color: var(--ink);
  font-weight: 700;
}

.segmented__indicator {
  position: absolute;
  top: 3px;
  bottom: 3px;
  left: 3px;
  width: 0;
  background: var(--gold);
  z-index: 0;
  transition: transform 0.18s ease, width 0.18s ease;
}

/* ---------- 标签页 ---------- */
.tabs { margin-top: 24px; }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--line);
}

.tabs__btn {
  margin-bottom: -1px;
  padding: 10px 16px;
  border-bottom: 2px solid transparent;
  font-size: var(--fs-14);
  line-height: 1.4;
  color: var(--fog);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.tabs__btn:hover { color: var(--silver); }

.tabs__btn[aria-selected="true"] {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.tabs__panel { padding-top: 22px; }

.tabs__panel[hidden] { display: none; }

/* ---------- 折叠面板 ---------- */
.accordion { border-top: 1px solid var(--line); }

.accordion__item { border-bottom: 1px solid var(--line); }

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 4px;
  text-align: left;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--silver);
  transition: color 0.18s ease;
}

.accordion__trigger:hover,
.accordion__trigger:focus-visible { color: var(--gold); }

.accordion__trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}

.accordion__trigger[aria-expanded="true"]::after {
  transform: rotate(-135deg);
}

.accordion__panel {
  padding: 0 4px 22px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--fog);
}

.accordion__panel[hidden] { display: none; }

/* ---------- 记录行 ---------- */
.log {
  display: grid;
  border-top: 1px solid var(--line);
}

.log__row {
  display: grid;
  grid-template-columns: minmax(0, 150px) minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: var(--fs-14);
}

.log__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fog-dim);
  padding-top: 3px;
}

.log__val { color: var(--silver); }

/* ---------- 卡片 ---------- */
.card {
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.card:hover { border-color: var(--cyan-soft); }

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.card__title {
  font-size: var(--fs-20);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--silver);
}

.card__body {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--fog);
}

/* ---------- 数据标签 ---------- */
.data-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.data-tag--gold  { color: var(--gold);  border-color: var(--gold-soft); }
.data-tag--cyan  { color: var(--cyan);  border-color: var(--cyan-soft); }
.data-tag--green { color: var(--green); border-color: rgba(75, 208, 139, 0.4); }

/* ---------- 图片容器 ---------- */
.figure {
  display: grid;
  gap: 10px;
  margin: 0;
}

.figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--graphite), var(--panel) 58%, var(--ink));
}

.figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
}

.figure__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fog-dim);
}

.figure--21x9 .figure__media { aspect-ratio: 21 / 9; }
.figure--16x9 .figure__media { aspect-ratio: 16 / 9; }
.figure--4x3  .figure__media { aspect-ratio: 4 / 3; }
.figure--1x1  .figure__media { aspect-ratio: 1 / 1; }

/* ---------- JS 注入组件 ---------- */
.scroll-progress {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 120;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
  pointer-events: none;
}

.to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.to-top[data-visible="true"] {
  opacity: 1;
  pointer-events: auto;
}

.to-top:hover,
.to-top:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 进场显现 ---------- */
html.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ---------- 响应式：≤1180px ---------- */
@media (max-width: 1180px) {
  .header-icp { display: none; }

  .cmd-nav__link { padding: 8px 9px; font-size: 13px; }

  .cmd-nav__idx { display: none; }

  .cmd-nav__link[aria-current="page"]::after {
    left: 9px;
    right: 9px;
  }
}

/* ---------- 响应式：≤1000px 折叠导航 ---------- */
@media (max-width: 1000px) {
  .nav-toggle { display: inline-flex; }

  .status-chip { display: none; }

  .header-shell { gap: 12px; }

  .cmd-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    z-index: 55;
    display: none;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 8px var(--gutter) 22px;
    background: var(--ink);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.55);
  }

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

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

  .cmd-nav__item { display: block; }

  .cmd-nav__link {
    display: flex;
    width: 100%;
    padding: 15px 10px;
    border: 0;
    border-bottom: 1px solid var(--line-soft);
    font-size: var(--fs-16);
    color: var(--silver);
    background: transparent;
  }

  .cmd-nav__idx { display: inline; }

  .cmd-nav__link:hover,
  .cmd-nav__link:focus-visible {
    border-color: var(--line-soft);
    background: var(--panel);
  }

  .cmd-nav__link[aria-current="page"] {
    border-bottom-color: var(--line-soft);
    background: rgba(232, 178, 58, 0.07);
  }

  .cmd-nav__link[aria-current="page"]::after {
    left: 0;
    right: auto;
    top: 10px;
    bottom: 10px;
    width: 2px;
    height: auto;
  }

  /* 页脚转 6 列 */
  .footer-shell {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    padding-top: 44px;
  }

  .footer-brand { grid-column: 1 / -1; }
  .footer-col--nav   { grid-column: span 3; }
  .footer-col--terms { grid-column: span 3; }
  .footer-contact    { grid-column: 1 / -1; }

  .section { padding: 56px 0; }

  .section__head {
    gap: 18px;
    margin-bottom: 28px;
  }
}

/* ---------- 响应式：≤760px ---------- */
@media (max-width: 760px) {
  .status-chip { display: none; }

  .grid { gap: 18px; }
}

/* ---------- 响应式：≤640px ---------- */
@media (max-width: 640px) {
  :root { --gutter: 16px; }

  .brand__meta { display: none; }

  .footer-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .footer-brand,
  .footer-col--nav,
  .footer-col--terms,
  .footer-contact { grid-column: 1 / -1; }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .section__head {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .log__row { grid-template-columns: minmax(0, 1fr); gap: 4px; }

  .segmented { display: flex; width: 100%; }

  .segmented__list { width: 100%; }

  .segmented__btn { flex: 1 1 auto; padding: 9px 12px; }

  .to-top { right: 12px; bottom: 12px; }
}

/* ---------- 动效降级 ---------- */
@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;
  }

  html.js-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .scroll-progress { display: none; }
}