/* ============================================================
   银河总站 · 中文官方站  共享样式  /assets/site.css
   语言：深空蓝黑底 + 星云紫分区 + 脉冲青交互 + 轨道节点索引
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --ink-deep: #05070F;
  --ink-night: #0B1226;
  --line-orbit: #243052;
  --nebula: #7A5CFF;
  --pulse: #39E6D0;
  --star: #EDF1FA;
  --dust: #98A2BC;
  --magenta: #FF6AA0;
  --paper: #F2F4F9;
  --shadow-deep: #1A1240;

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

  --shell-max: 1240px;
  --gutter: clamp(18px, 4vw, 48px);
  --r: 2px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --fast: 160ms;
}

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

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

body {
  margin: 0;
  background-color: var(--ink-deep);
  background-image:
    radial-gradient(1100px 620px at 82% -10%, rgba(122, 92, 255, .20), transparent 62%),
    radial-gradient(760px 520px at 4% 8%, rgba(57, 230, 208, .07), transparent 60%);
  background-repeat: no-repeat;
  color: var(--star);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 300;
  letter-spacing: .07em;
  line-height: 1.2;
}
h1 { font-weight: 200; letter-spacing: .1em; font-size: clamp(2rem, 6.4vw, 4rem); }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.2rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }

p { margin: 0 0 1.1em; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }

img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }

a { color: var(--star); text-decoration: none; }
a:hover { color: var(--pulse); }

:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 3px;
  border-radius: 1px;
}
:focus:not(:focus-visible) { outline: none; }

::selection { background: var(--nebula); color: #fff; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* ---------- 3. 容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.link {
  position: relative;
  color: var(--pulse);
  text-decoration: none;
}
.link::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  transition: left var(--fast) var(--ease), right var(--fast) var(--ease);
}
.link:hover::after,
.link:focus-visible::after { left: 0; right: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--pulse);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--pulse);
}

/* ---------- 4. 跳转链接与阅读进度轨 ---------- */
.skip-link {
  position: fixed;
  top: -110px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--pulse);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  border-radius: var(--r);
  transition: top var(--fast) var(--ease);
}
.skip-link:focus { top: 14px; color: var(--ink-deep); }

.scroll-rail {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
}
.scroll-rail__fill {
  display: block;
  height: 100%;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--nebula), var(--pulse));
  transition: width 120ms linear;
}

/* ---------- 5. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink-night);
  border-bottom: 2px solid var(--line-orbit);
  box-shadow: 0 10px 26px rgba(5, 7, 15, .82);
}
.site-header::after {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(122, 92, 255, .55) 18%, rgba(57, 230, 208, .5) 54%, rgba(122, 92, 255, .55) 84%, transparent);
}

.header-shell {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px clamp(12px, 2vw, 26px);
  padding-block: 12px;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  color: var(--star);
}
.brand:hover { color: var(--star); }

.brand-glyph {
  position: relative;
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border: 1.5px solid var(--pulse);
  border-radius: 50%;
}
.brand-glyph::before {
  content: "";
  position: absolute;
  left: -7px;
  right: -7px;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-orbit), transparent);
  transform: translateY(-50%) rotate(-22deg);
  transition: transform var(--fast) var(--ease);
}
.brand-glyph::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: var(--nebula);
  box-shadow: 0 0 0 3px rgba(122, 92, 255, .18);
}
.brand:hover .brand-glyph::before { transform: translateY(-50%) rotate(0deg); }

.brand-lockup { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 15px; font-weight: 500; letter-spacing: .18em; }
.brand-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .3em;
  color: var(--dust);
}

/* 移动切换按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 9px 13px;
  background: transparent;
  border: 2px solid var(--line-orbit);
  border-radius: var(--r);
  color: var(--star);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  cursor: pointer;
  transition: border-color var(--fast) var(--ease), color var(--fast) var(--ease),
              background var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.nav-toggle:hover { border-color: var(--pulse); color: var(--pulse); transform: translateY(-1px); }
.nav-toggle[aria-expanded="true"] {
  border-color: var(--nebula);
  background: rgba(122, 92, 255, .16);
  color: var(--star);
}
.nav-toggle__glyph { display: inline-flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle__glyph i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--fast) var(--ease), opacity var(--fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph i:first-child { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph i:last-child { transform: translateY(-4.5px) rotate(-45deg); }

/* 轨道导航 */
.orbit-nav { flex: 1 1 auto; min-width: 0; }
.orbit-nav__list {
  position: relative;
  display: flex;
  align-items: center;
  gap: 2px;
}
.orbit-nav__list::before {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-orbit) 12%, var(--line-orbit) 88%, transparent);
  transform: translateY(-50%);
}
.orbit-node { position: relative; z-index: 1; }

.orbit-node__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 6px 12px;
  background: var(--ink-night);
  border: 2px solid transparent;
  border-radius: var(--r);
  color: var(--dust);
  font-size: 13.5px;
  letter-spacing: .08em;
  white-space: nowrap;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease),
              background var(--fast) var(--ease), transform var(--fast) var(--ease),
              box-shadow var(--fast) var(--ease);
}
.orbit-node__link:hover {
  color: var(--star);
  border-color: var(--line-orbit);
  background: var(--ink-deep);
  transform: translateY(-2px);
}
.orbit-node__link[aria-current="page"] {
  color: #fff;
  background: var(--nebula);
  border-color: var(--pulse);
  box-shadow: 3px 3px 0 var(--shadow-deep);
}
.orbit-node__link[aria-current="page"]:hover { background: #8B73FF; color: #fff; }

.orbit-node__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  opacity: .68;
}
.orbit-node__link[aria-current="page"] .orbit-node__idx { opacity: 1; }

/* 状态区 */
.header-status {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  background: rgba(5, 7, 15, .6);
  border: 1px solid var(--line-orbit);
  border-radius: var(--r);
  color: var(--dust);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  white-space: nowrap;
}
.status-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pulse);
  box-shadow: 0 0 0 3px rgba(57, 230, 208, .18);
}
.status-chip--stamp { color: var(--pulse); border-color: rgba(57, 230, 208, .38); }

.header-cta {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 14px;
  background: var(--nebula);
  border: 2px solid var(--nebula);
  border-radius: var(--r);
  color: #fff;
  font-size: 13px;
  letter-spacing: .12em;
  white-space: nowrap;
  box-shadow: 3px 3px 0 var(--shadow-deep);
  transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease),
              background var(--fast) var(--ease), border-color var(--fast) var(--ease),
              color var(--fast) var(--ease);
}
.header-cta:hover {
  color: #fff;
  background: #8B73FF;
  border-color: var(--pulse);
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--shadow-deep);
}

/* ---------- 6. 页头响应式（移动优先） ---------- */
.brand { order: 1; }
.nav-toggle { order: 2; margin-left: auto; }
.header-status {
  order: 3;
  flex: 1 0 100%;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.header-status::-webkit-scrollbar { display: none; }

.orbit-nav {
  order: 4;
  flex: 1 0 100%;
  display: none;
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--line-orbit);
}
.orbit-nav[data-open] { display: block; }
.orbit-nav__list { flex-direction: column; align-items: stretch; gap: 3px; }
.orbit-nav__list::before { display: none; }
.orbit-node__link {
  width: 100%;
  justify-content: flex-start;
  min-height: 46px;
  padding: 10px 12px;
  background: transparent;
  border-left: 2px solid var(--line-orbit);
}
.orbit-node__link:hover { border-left-color: var(--pulse); transform: translateX(3px); }
.orbit-node__link[aria-current="page"] { box-shadow: none; transform: none; }

@media (min-width: 1024px) {
  body { font-size: 17px; line-height: 1.85; }

  .header-shell { flex-wrap: wrap; padding-block: 14px; }

  .brand { order: 1; }
  .nav-toggle { display: none; }

  .orbit-nav {
    order: 2;
    display: block;
    flex: 1 1 auto;
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
  }
  .orbit-nav__list { flex-direction: row; flex-wrap: wrap; gap: 2px; }
  .orbit-nav__list::before { display: block; }
  .orbit-node__link {
    width: auto;
    min-height: 40px;
    padding: 6px 11px;
    background: var(--ink-night);
    border-left: 2px solid transparent;
  }
  .orbit-node__link:hover { transform: translateY(-2px); }
  .orbit-node__link[aria-current="page"] { box-shadow: 3px 3px 0 var(--shadow-deep); }

  .header-status {
    order: 3;
    flex: 0 0 auto;
    overflow: visible;
    margin-left: auto;
    padding-bottom: 0;
  }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 120px);
  background: var(--ink-night);
  border-top: 2px solid var(--line-orbit);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(122, 92, 255, .6) 22%, rgba(57, 230, 208, .55) 55%, rgba(255, 106, 160, .4) 78%, transparent);
}

.footer-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  padding-block: clamp(40px, 6vw, 72px);
}

.footer-brand { display: grid; gap: 14px; align-content: start; }
.brand--footer { margin-bottom: 2px; }

.footer-lede {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--nebula);
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--dust);
}
.footer-facts {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--pulse);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
  gap: clamp(22px, 3vw, 40px);
}
.footer-col { display: grid; gap: 12px; align-content: start; }

.footer-col__title {
  position: relative;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-orbit);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .2em;
  color: var(--star);
}
.footer-col__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 28px;
  height: 2px;
  background: var(--nebula);
}

.footer-list { display: grid; gap: 8px; }
.footer-list a {
  display: inline-block;
  color: var(--dust);
  font-size: 14px;
  letter-spacing: .04em;
  transition: color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.footer-list a:hover { color: var(--pulse); transform: translateX(3px); }

.footer-contact { display: grid; gap: 8px; margin-top: 4px; }

.copy-btn {
  display: grid;
  gap: 2px;
  width: 100%;
  padding: 9px 12px;
  text-align: left;
  background: var(--ink-deep);
  border: 2px solid var(--line-orbit);
  border-radius: var(--r);
  color: var(--star);
  cursor: pointer;
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease),
              transform var(--fast) var(--ease);
}
.copy-btn:hover { border-color: var(--pulse); transform: translateX(3px); }
.copy-btn[data-copied] { border-color: var(--pulse); background: rgba(57, 230, 208, .1); }

.copy-btn__key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--dust);
}
.copy-btn__value {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--pulse);
  word-break: break-all;
}
.copy-btn[data-copied="fail"] .copy-btn__value { color: var(--magenta); }

.footer-note {
  margin: 4px 0 0;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--dust);
}

.footer-rail {
  background: var(--ink-deep);
  border-top: 1px solid var(--line-orbit);
  border-bottom: 1px solid var(--line-orbit);
}
.footer-rail__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  padding-block: 14px;
}
.stamp {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--dust);
}
.stamp time { color: var(--pulse); }
.stamp--version { color: var(--nebula); }

.footer-base { background: var(--ink-deep); }
.footer-base__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 20px;
  padding-block: 18px 26px;
}
.footer-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--dust);
}
.footer-copy--icp { color: var(--dust); }

@media (min-width: 900px) {
  .footer-shell {
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 8. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 20px;
  background: var(--nebula);
  border: 2px solid var(--nebula);
  border-radius: var(--r);
  color: #fff;
  font-size: 14px;
  letter-spacing: .12em;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--shadow-deep);
  transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease),
              background var(--fast) var(--ease), border-color var(--fast) var(--ease),
              color var(--fast) var(--ease);
}
.btn:hover {
  color: #fff;
  background: #8B73FF;
  border-color: var(--pulse);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--shadow-deep);
}
.btn:active { transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--shadow-deep); }

.btn--ghost {
  background: transparent;
  color: var(--star);
  border-color: var(--line-orbit);
}
.btn--ghost:hover {
  background: rgba(122, 92, 255, .14);
  border-color: var(--pulse);
  color: var(--star);
}

/* ---------- 9. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--dust);
}
.crumbs a {
  color: var(--dust);
  text-decoration: none;
  transition: color var(--fast) var(--ease);
}
.crumbs a:hover { color: var(--pulse); }
.crumbs__sep { color: var(--line-orbit); }

/* ---------- 10. 正文容器 ---------- */
.prose { max-width: 68ch; }
.prose h2 { margin: 2.2em 0 .7em; }
.prose h3 { margin: 1.8em 0 .6em; }
.prose p { margin: 0 0 1.15em; }
.prose ul,
.prose ol {
  display: grid;
  gap: 8px;
  margin: 0 0 1.3em;
}
.prose li { position: relative; padding-left: 20px; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .84em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--pulse);
  border-radius: 50%;
  transform: translateY(-50%);
}
.prose a { position: relative; color: var(--pulse); text-decoration: none; }
.prose a::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  transition: left var(--fast) var(--ease), right var(--fast) var(--ease);
}
.prose a:hover::after,
.prose a:focus-visible::after { left: 0; right: 0; }
.prose strong { color: var(--star); font-weight: 600; }
.prose code {
  font-family: var(--font-mono);
  font-size: .92em;
  padding: 2px 6px;
  border: 1px solid var(--line-orbit);
  border-radius: var(--r);
  color: var(--pulse);
  background: rgba(5, 7, 15, .7);
}

/* ---------- 11. 图片容器基础 ---------- */
.figure { display: grid; gap: 10px; margin: 0; }
.figure__frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: var(--figure-ratio, 16 / 9);
  border: 2px solid var(--line-orbit);
  border-radius: var(--r);
  background-image:
    radial-gradient(120% 95% at 74% 8%, rgba(122, 92, 255, .26), transparent 62%),
    radial-gradient(80% 70% at 10% 94%, rgba(57, 230, 208, .12), transparent 60%),
    linear-gradient(158deg, var(--ink-night) 0%, var(--ink-deep) 100%);
  overflow: hidden;
}
.figure__frame img,
.figure__frame svg,
.figure__frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure__frame--wide { --figure-ratio: 21 / 9; }
.figure__frame--strip { --figure-ratio: 5 / 2; }
.figure__frame--square { --figure-ratio: 1 / 1; }
.figure__frame--tall { --figure-ratio: 3 / 4; }
.figure__cap {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--dust);
}

/* ---------- 12. 网格与面板 ---------- */
.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); }
.grid--aside { grid-template-columns: 1fr; }

@media (min-width: 1000px) {
  .grid--aside {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
    align-items: start;
  }
}

.panel {
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--ink-night);
  border: 2px solid var(--line-orbit);
  border-radius: var(--r);
}
.panel--shadow { box-shadow: 6px 6px 0 var(--shadow-deep); }
.panel--paper {
  background: var(--paper);
  border-color: var(--ink-deep);
  color: var(--ink-deep);
}
.panel--paper .tag { border-color: rgba(5, 7, 15, .35); color: var(--ink-deep); }

/* ---------- 13. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--line-orbit);
  border-radius: var(--r);
  color: var(--dust);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
}
.tag--nebula { background: var(--nebula); border-color: var(--nebula); color: #fff; }
.tag--pulse { border-color: var(--pulse); color: var(--pulse); }
.tag--magenta { border-color: var(--magenta); color: var(--magenta); }
.tag--ghost { border-color: var(--line-orbit); color: var(--dust); background: rgba(5, 7, 15, .55); }