:root {
  --bg: #f3eee5; --bg-2: #ebe4d4; --paper: #faf7f0;
  --ink: #02162d; --ink-soft: #4a4a55; --ink-mute: #85858d;
  --line: #d5cdba; --accent: #3A34FF; --accent-soft: rgba(58,52,255,.14);
  --shadow: 0 16px 44px rgba(2,22,45,.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; overflow-x: hidden; background: var(--bg); color: var(--ink);
  font-family: Geist, "Noto Sans SC", system-ui, sans-serif;
  background-image: radial-gradient(circle at 1px 1px, rgba(2,22,45,.055) 1px, transparent 0);
  background-size: 24px 24px; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.hub-wrap { width: min(1180px, calc(100% - 64px)); margin: 0 auto; }

/* ── 全站一级导航 ── */
.module-topbar {
  position: sticky; top: 0; z-index: 220;
  color: #f5f5f2; background: rgba(9,9,9,.94);
  border-bottom: 1px dashed #383838;
  backdrop-filter: blur(12px);
}
.module-topbar-inner {
  position: relative; min-height: 64px;
  display: flex; align-items: center;
}
.module-brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: #f5f5f2; font: 600 13px "JetBrains Mono", monospace;
}
.module-brand img { width: 26px; height: 26px; border-radius: 50%; }
.module-primary-nav {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%,-50%);
  display: flex; align-items: center; gap: 4px;
  white-space: nowrap;
}
.module-primary-nav a {
  padding: 5px 12px; border: 1px solid transparent; border-radius: 100px;
  color: #bdbdb8; font: 12px/1.5 "JetBrains Mono", monospace;
  transition: color .18s, background .18s, border-color .18s;
}
.module-primary-nav a:hover { color: #f5f5f2; background: #191919; }
.module-primary-nav a.active {
  color: #090909; background: #f5f5f2; border-color: #f5f5f2;
}
.module-menu {
  display: none; width: 32px; height: 32px; margin-left: auto; padding: 0;
  place-items: center; color: #f5f5f2; background: #111;
  border: 1px solid #383838; border-radius: 50%; cursor: pointer;
}
.hub-hero { padding: 92px 0 62px; border-bottom: 1px dashed var(--line); }
.hub-kicker { color: var(--accent); font: 600 11px "JetBrains Mono", monospace; letter-spacing: .12em; text-transform: uppercase; }
.hub-hero-grid { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(280px,.7fr); align-items: end; gap: 72px; margin-top: 16px; }
.hub-title { margin: 0; font: 900 clamp(50px,7vw,84px)/1.02 "PingFang SC", "Noto Sans SC", sans-serif; letter-spacing: -.045em; }
.hub-title em { color: var(--accent); font-family: Fraunces, serif; font-weight: 500; }
.hub-lede { max-width: 700px; margin: 24px 0 0; color: var(--ink-soft); font-size: 17px; line-height: 1.75; }
.hub-summary { padding-left: 24px; border-left: 1px dashed var(--line); }
.hub-summary-row { display: flex; justify-content: space-between; gap: 20px; padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: 13px; }
.hub-summary-row span { color: var(--ink-mute); font: 10.5px "JetBrains Mono", monospace; letter-spacing: .05em; text-transform: uppercase; }
.hub-section { padding: 58px 0; }
.hub-section + .hub-section { border-top: 1px dashed var(--line); }
.hub-section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 24px; }
.hub-section-head h2 { margin: 0; font: 900 clamp(28px,4vw,42px) "PingFang SC", "Noto Sans SC", sans-serif; }
.hub-section-head p { max-width: 520px; margin: 0; color: var(--ink-soft); font-size: 13.5px; line-height: 1.7; }
.hub-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.hub-grid.three { grid-template-columns: repeat(3,minmax(0,1fr)); }
.hub-card { min-height: 250px; padding: 26px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); transition: transform .2s, border-color .2s, box-shadow .2s; }
.hub-card:hover { transform: translateY(-4px); border-color: var(--ink-mute); box-shadow: var(--shadow); }
.hub-card-no { color: var(--accent); font: 11px "JetBrains Mono", monospace; letter-spacing: .08em; }
.hub-card h3 { margin: 16px 0 9px; font: 800 25px/1.25 "PingFang SC", "Noto Sans SC", sans-serif; }
.hub-card p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.75; }
.hub-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.hub-tag { padding: 4px 9px; border: 1px solid var(--line); border-radius: 100px; color: var(--ink-mute); font: 10px "JetBrains Mono", monospace; }
.hub-card-link { margin-top: auto; padding-top: 28px; display: flex; justify-content: space-between; align-items: center; color: var(--accent); font: 600 11px "JetBrains Mono", monospace; }
.hub-card-link span:last-child { color: var(--ink-mute); }
.hub-note { padding: 20px 22px; border: 1px dashed var(--line); border-radius: 12px; background: var(--accent-soft); color: var(--ink-soft); font-size: 13px; line-height: 1.7; }
.hub-note strong { color: var(--accent); }
.profile { display: grid; grid-template-columns: 300px 1fr; gap: 64px; align-items: start; }
.profile-mark { aspect-ratio: 1; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--paper); }
.profile-mark img { width: 46%; height: 46%; }
.profile-copy h2 { margin: 0 0 22px; font: 900 clamp(34px,5vw,58px)/1.08 "PingFang SC", "Noto Sans SC", sans-serif; }
.profile-copy h2 em { color: var(--accent); font-family: Fraunces, serif; font-weight: 500; }
.profile-copy p { margin: 0 0 16px; color: var(--ink-soft); font-size: 16px; line-height: 1.85; }
.profile-copy strong { color: var(--ink); }
.hub-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.hub-button { padding: 10px 18px; border: 1px solid var(--line); border-radius: 9px; background: var(--paper); font-size: 13px; }
.hub-button.primary { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.hub-footer { margin-top: 34px; padding: 34px 0; border-top: 1px solid var(--line); background: var(--paper); color: var(--ink-mute); font: 11px "JetBrains Mono", monospace; }
.hub-footer-row { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.hub-footer a:hover { color: var(--accent); }
@media (max-width: 900px) {
  .module-primary-nav {
    display: none; left: auto; top: calc(100% + 1px); right: 0;
    width: min(280px,calc(100vw - 32px)); padding: 10px;
    transform: none; border: 1px solid #383838; border-radius: 0 0 3px 3px;
    background: #111; box-shadow: 0 18px 44px rgba(0,0,0,.3);
  }
  .module-primary-nav.open { display: grid; }
  .module-primary-nav a { padding: 9px 11px; border-radius: 3px; }
  .module-menu { display: grid; }
  .hub-hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hub-summary { padding: 18px 0 0; border-left: 0; border-top: 1px dashed var(--line); }
  .hub-grid.three { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .profile { grid-template-columns: 220px 1fr; gap: 38px; }
}
@media (max-width: 640px) {
  .hub-wrap { width: min(100% - 32px,1180px); }
  .hub-hero { padding: 62px 0 40px; }
  .hub-title { font-size: 46px; }
  .hub-grid, .hub-grid.three { grid-template-columns: 1fr; }
  .hub-section { padding: 42px 0; }
  .hub-section-head { align-items: flex-start; flex-direction: column; gap: 10px; }
  .hub-card { min-height: 230px; padding: 22px; }
  .profile { grid-template-columns: 1fr; }
  .profile-mark { width: 180px; }
}