/* ==========================================================================
   银河指南 · galaxy-orbit.com.cn
   /assets/site.css — 全站共享外壳：深空星图 + 天文台仪表台
   ========================================================================== */

/* ---------------------------------------------------------------
   1. Reset
   --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { background: none; border: 0; padding: 0; cursor: pointer; font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; }
small { font-size: 0.82em; }

/* ---------------------------------------------------------------
   2. 设计变量
   --------------------------------------------------------------- */
:root {
  --void: #05070F;
  --panel: #0B1226;
  --orbit: #1B2547;
  --violet: #8E7CFF;
  --violet-deep: #4A38B5;
  --magenta: #FF4FA3;
  --silver: #E8ECF7;
  --fluor: #39F2C8;
  --amber: #FFB13C;
  --mist: #7A88B8;
  --paper: #F5F1E6;
  --ink: #1A1712;

  --gutter: clamp(20px, 4vw, 56px);
  --shell: 1240px;
  --shell-wide: 1440px;

  --shadow-hard: 6px 6px 0 0 rgba(27, 37, 71, 0.9);
  --shadow-soft: 4px 4px 0 0 rgba(27, 37, 71, 0.6);
  --shadow-paper: 6px 6px 0 0 rgba(26, 23, 18, 0.16);

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

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------------------------------------------------------------
   3. 底色与基础排版
   --------------------------------------------------------------- */
body {
  background-color: var(--void);
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1.2px 1.2px at 14% 22%, rgba(232, 236, 247, 0.62), transparent 70%),
    radial-gradient(1px 1px at 68% 12%, rgba(142, 124, 255, 0.7), transparent 70%),
    radial-gradient(1.4px 1.4px at 82% 62%, rgba(232, 236, 247, 0.42), transparent 70%),
    radial-gradient(1px 1px at 32% 78%, rgba(57, 242, 200, 0.5), transparent 70%),
    radial-gradient(1px 1px at 52% 44%, rgba(232, 236, 247, 0.34), transparent 70%),
    radial-gradient(1.6px 1.6px at 8% 58%, rgba(255, 79, 163, 0.46), transparent 70%),
    radial-gradient(1px 1px at 92% 30%, rgba(232, 236, 247, 0.38), transparent 70%),
    radial-gradient(circle at 78% 6%, rgba(142, 124, 255, 0.16), transparent 46%),
    radial-gradient(circle at 10% 94%, rgba(255, 79, 163, 0.11), transparent 44%);
  opacity: 0.9;
}

header, main, footer { position: relative; z-index: 1; }

h1, h2, h3, h4, h5, h6 {
  font-weight: 200;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--silver);
}
h1 { font-size: clamp(38px, 6vw, 64px); }
h2 { font-size: clamp(28px, 3.4vw, 42px); }
h3 { font-size: clamp(21px, 2vw, 26px); font-weight: 300; }
h4 { font-size: 18px; font-weight: 400; }
p { max-width: 68ch; }
strong { font-weight: 600; color: #fff; }

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

::selection { background: var(--violet); color: var(--void); }

:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
  border-radius: 2px;
}
.site-footer :focus-visible { outline-color: var(--violet-deep); }

/* ---------------------------------------------------------------
   4. 布局原语
   --------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: 860px; }
.container--wide { max-width: var(--shell-wide); }

.section { padding-block: clamp(40px, 7vw, 96px); }
.section--tight { padding-block: clamp(24px, 4vw, 56px); }

.grid { display: grid; gap: clamp(20px, 3vw, 36px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }

.rule {
  height: 2px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, var(--orbit), rgba(142, 124, 255, 0.55) 40%, var(--orbit));
}

/* 画册式斜向数据带（站点通用 12° 倾角） */
.slant-band {
  position: relative;
  padding: clamp(24px, 4vw, 46px) clamp(22px, 4vw, 52px);
  background:
    linear-gradient(104deg, rgba(142, 124, 255, 0.16), rgba(11, 18, 38, 0.92) 58%);
  border: 2px solid var(--orbit);
  clip-path: polygon(0 0, 100% 6%, 100% 100%, 0 94%);
}

/* 同心轨道环（页面阶段用内联尺寸控制大小与位置） */
.orbit-ring {
  position: absolute;
  border: 1px solid rgba(142, 124, 255, 0.26);
  border-radius: 50%;
  pointer-events: none;
  animation: orbit-spin 90s linear infinite;
}
@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---------------------------------------------------------------
   5. 文本工具与页头小元素
   --------------------------------------------------------------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--magenta);
}
.page-head { padding-block: clamp(28px, 5vw, 64px) clamp(20px, 3vw, 40px); }
.page-title { font-weight: 200; letter-spacing: -0.015em; }
.page-lede {
  margin-top: 18px;
  font-size: 17px;
  color: var(--mist);
  max-width: 34em;
}
.mono { font-family: var(--font-mono); letter-spacing: 0.1em; }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: 0; }
.text-mist { color: var(--mist); }
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--violet);
  border-bottom: 1px solid rgba(142, 124, 255, 0.4);
  padding-bottom: 2px;
}
.link-more:hover { color: var(--silver); border-bottom-color: var(--silver); }

/* ---------------------------------------------------------------
   6. 按钮
   --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border: 2px solid var(--silver);
  background: transparent;
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 13.5px;
  letter-spacing: 0.12em;
  line-height: 1.5;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease),
    background-color 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
  background: var(--silver);
  color: var(--void);
}
.btn--violet {
  border-color: var(--violet);
  color: var(--violet);
  box-shadow: 4px 4px 0 0 rgba(142, 124, 255, 0.3);
}
.btn--violet:hover {
  background: var(--violet);
  color: var(--void);
  box-shadow: 6px 6px 0 0 rgba(142, 124, 255, 0.32);
}
.btn--ink {
  border-color: var(--ink);
  color: var(--ink);
  box-shadow: var(--shadow-paper);
}
.btn--ink:hover {
  background: var(--ink);
  color: var(--paper);
  box-shadow: 6px 6px 0 0 rgba(26, 23, 18, 0.22);
}

/* ---------------------------------------------------------------
   7. 跳转链接
   --------------------------------------------------------------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 120;
  padding: 10px 18px;
  background: var(--violet);
  color: var(--void);
  border: 2px solid var(--silver);
  font-size: 14px;
  letter-spacing: 0.08em;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 14px; color: var(--void); }

/* ---------------------------------------------------------------
   8. 头部外壳
   --------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(5, 7, 15, 0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--orbit);
  transition: box-shadow 0.3s var(--ease), background-color 0.3s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(5, 7, 15, 0.97);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.header-inner {
  width: 100%;
  max-width: var(--shell-wide);
  margin-inline: auto;
  padding: 16px var(--gutter) 14px;
  display: grid;
  grid-template-columns: auto minmax(24px, 1fr) auto;
  align-items: center;
  gap: 16px 28px;
}

/* 品牌 */
.brand {
  grid-column: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.brand__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand__link:hover .brand__name { color: #fff; }
.brand__mark {
  width: 10px;
  height: 10px;
  flex: none;
  background: var(--magenta);
  box-shadow: 0 0 14px 2px rgba(255, 79, 163, 0.55);
}
.brand__name {
  font-size: 20px;
  font-weight: 300;
  letter-spacing: 0.22em;
  color: var(--silver);
  transition: color 0.2s var(--ease);
}
.brand__meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--mist);
  white-space: nowrap;
}

/* 中间坐标刻度线 */
.header-span {
  grid-column: 2;
  position: relative;
  height: 1px;
  background: linear-gradient(90deg,
    rgba(27, 37, 71, 0) 0%,
    var(--orbit) 18%,
    var(--orbit) 82%,
    rgba(27, 37, 71, 0) 100%);
}
.header-span__tick {
  position: absolute;
  top: -4px;
  width: 2px;
  height: 9px;
  background: var(--violet);
  opacity: 0.55;
}
.header-span__tick--a { left: 20%; }
.header-span__tick--b { left: 50%; opacity: 0.9; }
.header-span__tick--c { left: 78%; }

/* 桌面导航 */
.site-nav {
  grid-column: 3;
  display: flex;
  align-items: center;
  gap: clamp(14px, 1.6vw, 28px);
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.6vw, 26px);
}
.site-nav__item { display: block; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  font-size: 14.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
  transition: color 0.24s var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--violet);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s var(--ease);
}
.site-nav__link:hover { color: var(--silver); }
.site-nav__link[aria-current="page"] { color: var(--silver); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -13px;
  top: 50%;
  width: 5px;
  height: 5px;
  margin-top: -2.5px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 12px 2px rgba(142, 124, 255, 0.9);
}

/* 移动端快捷入口 & 面板页脚 */
.nav-quick { display: none; }
.nav-foot { display: none; }
.nav-foot__meta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

/* 菜单按钮 */
.nav-toggle {
  grid-column: 3;
  justify-self: end;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 2px solid var(--orbit);
  color: var(--silver);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  position: relative;
  z-index: 95;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease);
}
.nav-toggle:hover { border-color: var(--violet); color: var(--violet); }
.nav-toggle__glyph {
  position: relative;
  width: 18px;
  height: 12px;
  display: inline-block;
  flex: none;
}
.nav-toggle__glyph::before,
.nav-toggle__glyph::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  transition: transform 0.24s var(--ease), top 0.24s var(--ease),
    bottom 0.24s var(--ease);
}
.nav-toggle__glyph::before { top: 0; }
.nav-toggle__glyph::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph::before {
  top: 5px;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph::after {
  bottom: 5px;
  transform: rotate(-45deg);
}

/* 遥测数据条 */
.header-strip {
  border-top: 1px solid var(--orbit);
  background: linear-gradient(180deg, rgba(11, 18, 38, 0.55), rgba(5, 7, 15, 0));
}
.header-strip__inner {
  width: 100%;
  max-width: var(--shell-wide);
  margin-inline: auto;
  padding: 10px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
}
.telemetry {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 28px;
}
.telemetry__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}
.telemetry__item::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  background: var(--orbit);
  border: 1px solid rgba(142, 124, 255, 0.6);
}
.telemetry__val { color: var(--silver); }
.telemetry__link {
  color: var(--violet);
  border-bottom: 1px solid rgba(142, 124, 255, 0.45);
  padding-bottom: 1px;
}
.telemetry__link:hover { color: var(--silver); border-bottom-color: var(--silver); }

.header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* ---------------------------------------------------------------
   9. 页脚（奶油纸白画册分区）
   --------------------------------------------------------------- */
.site-footer {
  background: var(--paper);
  color: var(--ink);
  border-top: 6px solid var(--violet);
}
.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(36px, 5vw, 64px) var(--gutter) clamp(20px, 3vw, 32px);
}
.footer-brand {
  border: 2px solid var(--ink);
  background: rgba(255, 255, 255, 0.42);
  box-shadow: var(--shadow-paper);
  padding: clamp(20px, 2.6vw, 30px) clamp(20px, 2.6vw, 34px);
  margin-bottom: clamp(28px, 4vw, 48px);
}
.footer-brand__name {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 200;
  letter-spacing: 0.2em;
  color: var(--ink);
  line-height: 1.2;
}
.footer-brand__meta {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--violet-deep);
}
.footer-brand__desc {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(26, 23, 18, 0.78);
  max-width: 46em;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 2px solid var(--ink);
  padding-top: clamp(20px, 3vw, 32px);
}
.footer-col { padding-right: clamp(14px, 2vw, 26px); }
.footer-col + .footer-col {
  border-left: 1px solid rgba(26, 23, 18, 0.28);
  padding-left: clamp(14px, 2vw, 26px);
}
.footer-col__title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink);
  margin-bottom: 14px;
}
.footer-col__title-link {
  color: var(--ink);
  border-bottom: 2px solid var(--violet-deep);
  padding-bottom: 2px;
}
.footer-col__title-link:hover { color: var(--violet-deep); }
.footer-col__list { display: grid; gap: 9px; }
.footer-col__item { display: block; }

.footer-link {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(26, 23, 18, 0.82);
  transition: color 0.2s var(--ease);
}
.footer-link:hover {
  color: var(--violet-deep);
  border-bottom: 2px solid var(--violet-deep);
}

.footer-contact {
  margin-top: clamp(28px, 4vw, 48px);
  border: 2px solid var(--ink);
  padding: clamp(18px, 2.4vw, 28px) clamp(18px, 2.4vw, 30px);
  background: rgba(255, 255, 255, 0.3);
}
.footer-contact__line {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ink);
  max-width: none;
}
.footer-contact__line + .footer-contact__line { margin-top: 6px; }
.footer-contact__note {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(26, 23, 18, 0.72);
  max-width: 52em;
}
.footer-contact__cta { margin-top: 18px; }

.footer-bottom {
  margin-top: clamp(24px, 3vw, 36px);
  padding-top: 18px;
  border-top: 2px solid var(--ink);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: rgba(26, 23, 18, 0.7);
  max-width: none;
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
}
.footer-legal__item {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(26, 23, 18, 0.7);
}

/* ---------------------------------------------------------------
   10. 通用组件
   --------------------------------------------------------------- */
/* 面包屑 */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
}
.breadcrumb__link { color: var(--mist); }
.breadcrumb__link:hover { color: var(--violet); }
.breadcrumb__sep { color: rgba(122, 136, 184, 0.6); }
.breadcrumb__item[aria-current="page"] { color: var(--silver); }

/* 面板 */
.panel {
  border: 2px solid var(--orbit);
  background: linear-gradient(180deg, rgba(11, 18, 38, 0.92), rgba(5, 7, 15, 0.72));
  box-shadow: var(--shadow-soft);
  padding: clamp(18px, 2.4vw, 30px);
}
.panel--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: var(--shadow-paper);
}
.panel--paper h2, .panel--paper h3, .panel--paper h4 { color: var(--ink); }
.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 20px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--orbit);
}
.panel--paper .panel__head { border-bottom-color: rgba(26, 23, 18, 0.3); }
.panel__title { font-size: 18px; font-weight: 400; letter-spacing: 0.04em; }
.panel__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}
.panel__body { font-size: 16px; line-height: 1.9; }
.panel__body p + p { margin-top: 12px; }

/* 卡片 */
.card {
  border: 2px solid var(--orbit);
  background: rgba(11, 18, 38, 0.66);
  padding: clamp(16px, 2vw, 24px);
  box-shadow: var(--shadow-soft);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease),
    box-shadow 0.24s var(--ease);
}
.card:hover {
  transform: translate(-2px, -2px);
  border-color: rgba(142, 124, 255, 0.7);
  box-shadow: var(--shadow-hard);
}
.card__title { font-size: 18px; font-weight: 400; letter-spacing: 0.03em; }
.card__body { margin-top: 10px; font-size: 15.5px; color: var(--mist); }
.card__meta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

/* 并列数值（价格 / 费用 / 周期） */
.stat {
  border: 2px solid var(--orbit);
  background: var(--panel);
  padding: clamp(16px, 2vw, 24px);
}
.stat__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
  margin-bottom: 10px;
}
.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--silver);
}
.stat__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
  margin-left: 6px;
}
.stat--price .stat__value,
.stat--fee .stat__value {
  color: var(--fluor);
  text-shadow: 0 0 18px rgba(57, 242, 200, 0.35);
}
.stat--cycle .stat__value {
  color: var(--amber);
  text-shadow: 0 0 18px rgba(255, 177, 60, 0.3);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  line-height: 1.8;
}
.tag--violet { color: var(--violet); }
.tag--magenta { color: var(--magenta); }
.tag--amber { color: var(--amber); }
.tag--fluor { color: var(--fluor); }

/* 对照表 */
.data-table {
  width: 100%;
  border: 2px solid var(--orbit);
  background: rgba(11, 18, 38, 0.6);
  font-size: 15px;
}
.data-table th,
.data-table td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--orbit);
  vertical-align: top;
}
.data-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--mist);
  background: rgba(27, 37, 71, 0.34);
}
.data-table tbody tr { transition: background-color 0.2s var(--ease); }
.data-table tbody tr:hover { background: rgba(142, 124, 255, 0.09); }
.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table .num { color: var(--fluor); }

/* 图片 / 图形容器 */
.figure { margin: 0; }
.figure__frame {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--orbit);
  box-shadow: var(--shadow-hard);
  aspect-ratio: 16 / 10;
  background-color: var(--panel);
  background-image:
    radial-gradient(circle at 74% 18%, rgba(142, 124, 255, 0.36), transparent 46%),
    radial-gradient(circle at 22% 84%, rgba(255, 79, 163, 0.24), transparent 44%),
    radial-gradient(circle at 50% 50%, rgba(57, 242, 200, 0.12), transparent 60%),
    repeating-linear-gradient(0deg, rgba(27, 37, 71, 0.55) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(27, 37, 71, 0.55) 0 1px, transparent 1px 48px);
}
.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.figure--wide .figure__frame { aspect-ratio: 21 / 9; }
.figure--tall .figure__frame { aspect-ratio: 4 / 5; }

/* ---------------------------------------------------------------
   11. 动效
   --------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 100;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--violet), var(--magenta), var(--fluor));
  pointer-events: none;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------------------------------------------------------------
   12. 无障碍工具
   --------------------------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  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;
}

/* ---------------------------------------------------------------
   13. 响应式
   --------------------------------------------------------------- */
@media (max-width: 1080px) {
  .site-nav__link { font-size: 13.5px; letter-spacing: 0.1em; }
}

@media (max-width: 1024px) {
  .header-inner { padding-block: 13px; gap: 10px 16px; }
  .brand__name { font-size: 17px; letter-spacing: 0.18em; }
  .brand__meta { font-size: 9.5px; letter-spacing: 0.15em; }
  .header-span { display: none; }
  .header-strip { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: block;
    padding: 92px var(--gutter) 48px;
    overflow-y: auto;
    background-color: rgba(5, 7, 15, 0.985);
    background-image:
      radial-gradient(circle at 84% 6%, rgba(142, 124, 255, 0.2), transparent 46%),
      radial-gradient(circle at 8% 96%, rgba(255, 79, 163, 0.14), transparent 44%);
    border-top: 2px solid var(--orbit);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease),
      visibility 0.28s linear;
  }
  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .site-nav__list {
    display: block;
    border-top: 2px solid var(--orbit);
  }
  .site-nav__item { border-bottom: 1px solid var(--orbit); }
  .site-nav__link {
    display: block;
    padding: 16px 0;
    font-size: 26px;
    font-weight: 200;
    letter-spacing: 0.08em;
    color: var(--silver);
  }
  .site-nav__link::after { display: none; }
  .site-nav__link:hover { color: var(--violet); }
  .site-nav__link[aria-current="page"] { color: var(--violet); }
  .site-nav__link[aria-current="page"]::before {
    left: auto;
    right: 2px;
    width: 7px;
    height: 7px;
    margin-top: -3.5px;
  }

  .nav-quick {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 30px;
  }
  .nav-quick__item { display: block; }
  .nav-quick__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 12px 14px;
    border: 2px solid var(--orbit);
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--silver);
    transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
  }
  .nav-quick__link:hover { border-color: var(--violet); color: var(--violet); }
  .nav-quick__idx {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    color: var(--magenta);
  }

  .nav-foot {
    display: block;
    margin-top: 30px;
    padding-top: 24px;
    border-top: 2px solid var(--orbit);
  }
  .nav-foot .header-actions { gap: 10px; }
  .nav-foot .btn { flex: 1 1 auto; }
}

@media (max-width: 900px) {
  .grid--2, .grid--3, .grid--4,
  .grid--7-5, .grid--5-7 { grid-template-columns: minmax(0, 1fr); }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-col { padding: 18px 0; border-top: 1px solid rgba(26, 23, 18, 0.28); }
  .footer-col + .footer-col {
    border-left: 0;
    padding-left: 0;
  }
  .footer-col:nth-child(odd) { padding-right: 20px; }
  .footer-col:nth-child(even) {
    border-left: 1px solid rgba(26, 23, 18, 0.28);
    padding-left: 20px;
  }
}

@media (max-width: 620px) {
  body { font-size: 16px; line-height: 1.85; }
  .nav-quick { grid-template-columns: minmax(0, 1fr); }
  .site-nav__link { font-size: 22px; padding: 14px 0; }
  .nav-toggle__label { display: none; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-col:nth-child(odd),
  .footer-col:nth-child(even) {
    border-left: 0;
    padding-left: 0;
    padding-right: 0;
  }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .figure--wide .figure__frame,
  .figure--tall .figure__frame { aspect-ratio: 16 / 10; }
}

/* ---------------------------------------------------------------
   14. 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;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .orbit-ring { animation: none; }
  .card:hover, .btn:hover { transform: none; }
}

@media (scripting: none) {
  [data-reveal] { opacity: 1; transform: none; }
}