/* ========== Local fonts (Baskerville BQ — 私授权，仓库需 Private) ========== */
@font-face {
  font-family: 'Baskerville';
  src: url('../fonts/BaskervilleNewBQ-Roman.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Baskerville';
  src: url('../fonts/BaskervilleNewBQ-Italic.otf') format('opentype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Baskerville';
  src: url('../fonts/BaskervilleNewBQ-SemiBold.otf') format('opentype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Baskerville';
  src: url('../fonts/BaskervilleNewBQ-Bold.otf') format('opentype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ========== 阿里巴巴普惠体 3.0（免费可商用，alibabafonts.com 下载） ========== */
@font-face {
  font-family: 'Alibaba PuHuiTi 3';
  src: url('../fonts/AlibabaPuHuiTi-3-45-Light.ttf') format('truetype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Alibaba PuHuiTi 3';
  src: url('../fonts/AlibabaPuHuiTi-3-55-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Alibaba PuHuiTi 3';
  src: url('../fonts/AlibabaPuHuiTi-3-65-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Alibaba PuHuiTi 3';
  src: url('../fonts/AlibabaPuHuiTi-3-75-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ========== Tokens ========== */
:root {
  --bg: #0a0a0a;
  --bg-2: #111111;
  --panel: rgba(20, 20, 20, 0.65);
  --panel-solid: #141414;
  --accent: #e63946;
  --accent-soft: rgba(230, 57, 70, 0.18);
  --accent-line: rgba(230, 57, 70, 0.45);
  --text: #f3f3f3;
  --text-dim: #9a9a9a;
  --text-faint: #5a5a5a;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);

  --font-serif: 'Baskerville', 'Alibaba PuHuiTi 3', -apple-system, 'PingFang SC', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;
  --font-sans: 'Inter', 'Alibaba PuHuiTi 3', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --rail-w: 44px;
  --hud-pad: 28px;
}

/* ========== Reset ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { background: none; border: none; color: inherit; font: inherit; cursor: pointer; }
img, video { display: block; max-width: 100%; }
::selection { background: var(--accent); color: #fff; }

/* ========== Background grain + scanline ========== */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 999;
  background-image:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent 2px,
      rgba(255,255,255,0.012) 2px,
      rgba(255,255,255,0.012) 3px
    );
  mix-blend-mode: overlay;
}
body::after {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 998;
  background:
    radial-gradient(ellipse at 50% 50%, transparent 40%, rgba(0,0,0,0.55) 100%);
}

/* ========== Left rail ========== */
.rail {
  position: fixed;
  left: 0; top: 0;
  width: var(--rail-w);
  height: 100vh;
  z-index: 50;
  background: #000;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 0;
}
.rail__logo {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.rail__honors {
  margin-top: 28px;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  background: var(--panel-solid);
  padding: 14px 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: color .3s, border-color .3s;
}
.rail__honors:hover { color: var(--accent); border-color: var(--accent-line); }

/* ========== HUD (top corners) ========== */
.hud {
  position: fixed;
  top: var(--hud-pad);
  z-index: 60;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  pointer-events: none;
}
.hud--tl { left: calc(var(--rail-w) + 24px); color: var(--text-dim); }
.hud--tl .signal { color: var(--accent); margin-top: 2px; display: block; }
.hud--tr { right: var(--hud-pad); text-align: right; color: var(--text-dim); }
.hud--tr .ts { font-size: 11px; letter-spacing: 0.1em; }
.hud--tr .iso { color: var(--text-faint); }

.lang-toggle {
  position: fixed;
  right: var(--hud-pad);
  top: 70px;
  display: flex; gap: 6px;
  z-index: 60;
  font-family: var(--font-mono);
  font-size: 11px;
}
.lang-toggle button {
  width: 30px; height: 26px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  letter-spacing: 0.1em;
  transition: all .25s;
}
.lang-toggle button.is-active {
  border-color: var(--accent);
  color: var(--accent);
}

/* ========== Live feed (bottom-left) ========== */
.live-feed {
  position: fixed;
  left: calc(var(--rail-w) + 18px);
  bottom: 22px;
  z-index: 60;
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}
.live-feed .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: blink 1.6s infinite;
}
@keyframes blink {
  0%, 70% { opacity: 1; }
  85% { opacity: 0.2; }
  100% { opacity: 1; }
}

/* ========== Status (bottom-right) ========== */
.sys-status {
  position: fixed;
  right: var(--hud-pad);
  bottom: 22px;
  z-index: 60;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--text-faint);
  text-align: right;
}
.sys-status .stable { color: var(--accent); }

/* ========== Tag / chip ========== */
.tag {
  display: inline-flex; align-items: center;
  padding: 5px 10px;
  border: 1px solid var(--accent-line);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.tag--ghost { border-color: var(--border-strong); color: var(--text-dim); }
.tag--solid { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ========== Decorative box ========== */
.deco-box {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  border: 1px solid var(--border-strong);
  padding: 6px 10px;
  background: rgba(0,0,0,0.4);
  pointer-events: none;
}

/* ========== Crosshair corners ========== */
.crosshair {
  position: relative;
}
.crosshair::before, .crosshair::after,
.crosshair > .ch-tl, .crosshair > .ch-tr,
.crosshair > .ch-bl, .crosshair > .ch-br {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  border: 1px solid var(--accent);
  pointer-events: none;
}
.crosshair > .ch-tl { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.crosshair > .ch-tr { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.crosshair > .ch-bl { bottom: -1px; left: -1px; border-right: none; border-top: none; }
.crosshair > .ch-br { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* ========== Buttons ========== */
.btn-decrypt {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--text);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 4px;
  transition: color .25s, border-color .25s;
  cursor: pointer;
}
.btn-decrypt:hover { color: var(--accent); }

/* ========== Page heading (oversized serif) ========== */
.page-heading {
  font-family: var(--font-serif);
  font-size: clamp(40px, 5.5vw, 80px);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 0.95;
  position: relative;
}
.page-heading .slash {
  display: inline-block;
  width: 2px; height: 0.85em;
  background: var(--accent);
  margin: 0 0.5em -0.05em 0.5em;
  transform: rotate(20deg);
  vertical-align: middle;
}

/* ========== Utility ========== */
.label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); }
.label-accent { color: var(--accent); }
.divider { height: 1px; background: var(--border); width: 100%; }
.divider-accent { height: 1px; background: linear-gradient(to right, transparent, var(--accent), transparent); }

/* ========== Page wrapper ========== */
.page {
  padding-left: var(--rail-w);
  min-height: 100vh;
  position: relative;
}

@media (max-width: 720px) {
  :root { --rail-w: 36px; --hud-pad: 16px; }
  .hud--tl { left: calc(var(--rail-w) + 12px); font-size: 9px; }
  .lang-toggle { top: 56px; }
}