/* ==========================================================================
   亚星赛场 · 共享样式表 /assets/site.css
   深空蓝黑底 + 荧光青 / 信号橙双强调 + 粗野边框 + 等宽数字
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #070B14;
}

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

ul, ol { list-style: none; }

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

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

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

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

/* ---------- 设计令牌 ---------- */
:root {
  /* 底色层 */
  --void: #070B14;
  --panel: #0E1524;
  --steel: #151C2C;

  /* 边界与线条 */
  --edge: #243149;
  --edge-strong: #33456A;

  /* 文字 */
  --text: #E9EFF8;
  --dim: #93A6C2;

  /* 强调 */
  --cyan: #00E7D2;
  --orange: #FF5C1F;
  --gold: #FFC544;
  --grass: #3FD68A;
  --red: #FF4D6D;

  /* 尺度 */
  --rail-w: 92px;
  --bar-h: 34px;
  --brand-h: 132px;
  --railtop-h: 76px;

  /* 字体 */
  --font-head: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 动效 */
  --ease: cubic-bezier(.2, .7, .2, 1);
  --dur: 240ms;
  --dur-slow: 420ms;

  /* 版面 */
  --shell-max: 1480px;
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  padding-top: var(--bar-h);
  padding-left: var(--rail-w);
  background: var(--void);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.01em;
}

h1 { font-size: clamp(28px, 4.4vw, 64px); }
h2 { font-size: clamp(24px, 3vw, 44px); }
h3 { font-size: clamp(19px, 2vw, 28px); }
h4 { font-size: clamp(16px, 1.4vw, 20px); }

p { max-width: 40em; }

a { transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease); }

::selection { background: var(--cyan); color: #04120F; }

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

/* ---------- 跳至主要内容 ---------- */
.skip-link {
  position: fixed;
  top: 6px;
  left: 6px;
  z-index: 999;
  padding: 9px 16px;
  background: var(--cyan);
  color: #04120F;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  border: 2px solid #04120F;
  transform: translateY(-220%);
  transition: transform 180ms var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

/* ==========================================================================
   header
   ========================================================================== */
.site-header { position: relative; z-index: 100; }

/* ---------- 状态条 ---------- */
.status-bar {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--bar-h);
  z-index: 130;
  display: flex;
  align-items: center;
  gap: 14px;
  padding-inline: 14px;
  background: var(--panel);
  border-bottom: 2px solid var(--edge);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--dim);
}

.status-bar__feed {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  max-width: 46%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-bar__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 231, 210, .55); }
  50%      { box-shadow: 0 0 0 7px rgba(0, 231, 210, 0); }
}

.status-bar__scope {
  margin-left: auto;
  white-space: nowrap;
  max-width: none;
}

.status-bar__scope b {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: .04em;
}

.status-bar__cta {
  flex: none;
  padding: 3px 10px;
  border: 1px solid var(--orange);
  color: var(--orange);
  font-size: 11px;
  letter-spacing: .14em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.status-bar__cta:hover,
.status-bar__cta:focus-visible {
  background: var(--orange);
  color: #170600;
}

.status-bar__progress {
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 2px;
  width: var(--scroll-progress, 0%);
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

/* ---------- 左轨品牌 ---------- */
.rail-brand {
  position: fixed;
  top: var(--bar-h);
  left: 0;
  z-index: 110;
  width: var(--rail-w);
  height: var(--brand-h);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--panel);
  border-right: 2px solid var(--edge);
  border-bottom: 2px solid var(--edge);
}

.rail-brand__cn {
  writing-mode: vertical-rl;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: .2em;
  color: var(--text);
}

.rail-brand__en {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .26em;
  color: var(--cyan);
}

/* ---------- 主导航 ---------- */
.site-nav {
  position: fixed;
  top: calc(var(--bar-h) + var(--brand-h));
  bottom: var(--railtop-h);
  left: 0;
  z-index: 110;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 0;
  background: var(--panel);
  border-right: 2px solid var(--edge);
  overflow-y: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar { width: 0; height: 0; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.site-nav__link {
  position: relative;
  display: block;
  writing-mode: vertical-rl;
  padding: 11px 6px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--dim);
}

.site-nav__link::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 1px;
  width: 10px;
  height: 2px;
  background: var(--edge-strong);
  transform: translateX(-50%);
  transition: background var(--dur) var(--ease), width var(--dur) var(--ease);
}

.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--text); }

.site-nav__link:hover::before { background: var(--edge-strong); }

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

.site-nav__link[aria-current="page"]::before {
  width: 18px;
  background: var(--cyan);
}

.site-nav__brand,
.site-nav__meta { display: none; }

/* ---------- 返回顶部 ---------- */
.rail-top {
  position: fixed;
  left: 0;
  bottom: 0;
  z-index: 110;
  width: var(--rail-w);
  height: var(--railtop-h);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--panel);
  border-right: 2px solid var(--edge);
  border-top: 2px solid var(--edge);
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              visibility 0s linear var(--dur),
              color var(--dur) var(--ease);
}

.rail-top.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              visibility 0s,
              color var(--dur) var(--ease);
}

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

.rail-top__arrow {
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
}

/* ---------- 移动开关与遮罩 ---------- */
.nav-toggle { display: none; }

.nav-scrim { display: none; }

/* ==========================================================================
   通用版面组件
   ========================================================================== */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 60px);
}

#main-content { display: block; scroll-margin-top: calc(var(--bar-h) + 20px); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
  gap: clamp(24px, 3.6vw, 64px);
  align-items: start;
}

.split--narrow { grid-template-columns: minmax(0, 30fr) minmax(0, 70fr); }

.band {
  background: var(--steel);
  border-top: 2px solid var(--edge);
  border-bottom: 2px solid var(--edge);
  padding-block: clamp(24px, 3.4vw, 44px);
}

.panel {
  background: var(--panel);
  border: 2px solid var(--edge);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .5);
}

.panel--accent { border-color: var(--cyan); }

.label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--dim);
}

.label--cyan { color: var(--cyan); }
.label--orange { color: var(--orange); }
.label--gold { color: var(--gold); }

.num {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}

.prose {
  max-width: 34em;
  color: var(--text);
}

.prose p + p { margin-top: 1.1em; }

.prose h2,
.prose h3 { margin-top: 1.6em; margin-bottom: .5em; }

.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 231, 210, .45);
}

.prose a:hover { border-bottom-color: var(--cyan); }

/* 面包屑导读 */
.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--dim);
}

.crumb a { color: var(--dim); }
.crumb a:hover { color: var(--cyan); }
.crumb__sep { color: var(--edge-strong); }
.crumb [aria-current="page"] { color: var(--cyan); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border: 2px solid var(--edge-strong);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translate(-2px, -2px);
}

.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04120F;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  color: #170600;
}

/* 图片占位容器 */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--steel);
  border: 2px solid var(--edge);
}

.img-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame--wide   { aspect-ratio: 21 / 9; }
.img-frame--16x9   { aspect-ratio: 16 / 9; }
.img-frame--4x3    { aspect-ratio: 4 / 3; }
.img-frame--square { aspect-ratio: 1 / 1; }
.img-frame--tall   { aspect-ratio: 3 / 4; }

.img-frame[data-placeholder]::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(36, 49, 73, .7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 49, 73, .7) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}

/* 显现 */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}

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

/* ==========================================================================
   footer
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 128px);
  background: var(--panel);
  border-top: 3px solid var(--edge);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--edge) 0 1px, transparent 1px 16px);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, .9fr);
  gap: clamp(28px, 4vw, 68px);
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(44px, 6vw, 84px) clamp(20px, 4vw, 60px) clamp(30px, 4vw, 48px);
}

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

.footer-logo {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.footer-logo__cn {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: .04em;
}

.footer-logo__en {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .3em;
  color: var(--cyan);
}

.footer-blurb {
  max-width: 32em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

.footer-contact {
  margin-top: 26px;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--edge);
  padding-top: 18px;
}

.footer-contact__row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  font-size: 13px;
}

.footer-contact__row dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--dim);
  padding-top: 3px;
}

.footer-contact__row dd { color: var(--text); }

.footer-heading {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange);
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--edge);
}

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

.footer-list a {
  display: block;
  padding: 7px 0;
  font-size: 14px;
  color: var(--dim);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--edge);
  padding-left: 6px;
}

.footer-icp {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--dim);
  padding-top: 14px;
  border-top: 1px solid var(--edge);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 16px clamp(20px, 4vw, 60px) 22px;
  border-top: 2px solid var(--edge);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--dim);
}

.footer-base__copy,
.footer-base__note { max-width: none; }

.footer-base__note { color: var(--edge-strong); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr); }
}

@media (max-width: 900px) {
  :root {
    --rail-w: 0px;
    --bar-h: 34px;
  }

  body {
    padding-left: 0;
    font-size: 15.5px;
  }

  .status-bar {
    gap: 10px;
    padding-inline: 12px;
    font-size: 10px;
  }

  .status-bar__feed { display: none; }

  .status-bar__scope { font-size: 10px; }

  .rail-brand { display: none; }

  /* 导航转为抽屉 */
  .site-nav {
    top: 0;
    bottom: 0;
    width: min(86vw, 330px);
    align-items: stretch;
    justify-content: flex-start;
    padding: 78px 22px 30px;
    border-right: 2px solid var(--edge);
    border-bottom: 0;
    background: var(--panel);
    transform: translateX(-100%);
    transition: transform 320ms var(--ease);
    z-index: 210;
    overflow-y: auto;
  }

  .site-nav[data-open] { transform: translateX(0); }

  .site-nav__brand {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding-bottom: 20px;
    margin-bottom: 22px;
    border-bottom: 2px solid var(--edge);
  }

  .site-nav__brand-cn {
    font-family: var(--font-head);
    font-weight: 800;
    font-size: 22px;
    letter-spacing: .04em;
  }

  .site-nav__brand-en {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .3em;
    color: var(--cyan);
  }

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

  .site-nav__item { width: 100%; }

  .site-nav__link {
    writing-mode: horizontal-tb;
    display: block;
    width: 100%;
    padding: 15px 2px;
    font-size: 16px;
    letter-spacing: .06em;
    border-bottom: 1px solid var(--edge);
  }

  .site-nav__link::before { display: none; }

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

  .site-nav__meta {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 6px 12px;
    margin-top: 28px;
    padding-top: 18px;
    border-top: 2px solid var(--edge);
    font-size: 13px;
  }

  .site-nav__meta-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .16em;
    color: var(--dim);
    padding-top: 3px;
  }

  .site-nav__meta-value { color: var(--text); word-break: break-all; }

  /* 遮罩 */
  .nav-scrim[data-open] {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(7, 11, 20, .78);
  }

  /* 开关 */
  .nav-toggle {
    position: fixed;
    top: calc(var(--bar-h) + 10px);
    right: 12px;
    z-index: 230;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 9px 13px;
    background: var(--panel);
    border: 2px solid var(--edge);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .16em;
  }

  .nav-toggle__bars {
    display: grid;
    gap: 4px;
    width: 16px;
  }

  .nav-toggle__bar {
    display: block;
    width: 16px;
    height: 2px;
    background: var(--cyan);
    transition: transform var(--dur) var(--ease);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(3px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    transform: translateY(-3px) rotate(-45deg);
  }

  /* 返回顶部移到右下 */
  .rail-top {
    left: auto;
    right: 16px;
    bottom: 16px;
    width: 58px;
    height: 58px;
    border: 2px solid var(--edge);
    box-shadow: 4px 4px 0 rgba(0, 0, 0, .5);
    gap: 2px;
    font-size: 9px;
    letter-spacing: .06em;
  }

  .rail-top__arrow { font-size: 15px; }

  .split,
  .split--narrow { grid-template-columns: minmax(0, 1fr); }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

@media (max-width: 560px) {
  .status-bar__scope { font-size: 9.5px; }

  .status-bar__cta {
    font-size: 10px;
    padding: 3px 8px;
    letter-spacing: .1em;
  }

  .footer-contact__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .footer-contact__row dt { padding-top: 0; }
}

/* 无横向溢出的安全网 */
@media (max-width: 900px) {
  body[data-nav-open] { overflow: hidden; }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .status-bar__dot { animation: none; }
}