/* 匡子闲 — system fonts only, no external CDN */
:root {
  --bg: #f3eee4;
  --bg-deep: #ece4d6;
  --paper: #fffdf8;
  --ink: #1c1814;
  --ink-soft: #3a342c;
  --muted: #6e655b;
  --line: #e2d8c8;
  --line-strong: #cfc3b0;
  --accent: #2c5f4e;
  --accent-soft: #e7f0eb;
  --cinnabar: #9a3b2f;
  --cinnabar-soft: #f6e8e4;
  --gold: #b0894a;
  --shadow: 0 10px 30px rgba(28, 24, 20, 0.06);
  --radius: 16px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC",
    "Microsoft YaHei", "WenQuanYi Micro Hei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun",
    "Songti TC", Georgia, "Times New Roman", serif;
  --font-mono: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #efe6d4 0%, transparent 55%),
    radial-gradient(900px 400px at 110% 0%, #e4eee8 0%, transparent 50%),
    var(--bg);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--cinnabar); }
img { max-width: 100%; display: block; }
.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
  z-index: 10;
}
.skip:focus { left: 8px; top: 8px; }

.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(14px);
  background: rgba(243, 238, 228, 0.82);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}
.logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.12em;
}
.logo:hover { color: var(--accent); }
.nav { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; }
.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
}
.nav a:hover { color: var(--accent); }
.lang-toggle {
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 4px 10px;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}
.lang-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* hero */
.hero {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  align-items: center;
  padding: 72px 0 48px;
}
.portrait {
  width: 200px;
  height: 260px;
  object-fit: cover;
  border-radius: 6px 6px 80px 6px;
  box-shadow: var(--shadow);
  background: var(--bg-deep);
  filter: saturate(0.92) contrast(1.02);
}
.kicker {
  color: var(--gold);
  letter-spacing: 0.22em;
  font-size: 0.78rem;
  margin: 0 0 10px;
  text-transform: uppercase;
}
h1 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2.8rem, 6vw, 4.4rem);
  letter-spacing: 0.18em;
  margin: 0 0 8px;
  line-height: 1.1;
}
.handle {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  margin: 0 0 22px;
}
.bio { font-size: 1.08rem; color: var(--ink-soft); margin: 0 0 12px; max-width: 38rem; }
.motto {
  margin: 0;
  color: var(--muted);
  font-style: italic;
}
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.tag {
  font-size: 0.78rem;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 4px 10px;
}

section { padding: 28px 0 12px; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
  margin-bottom: 22px;
}
.section-head h2 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.6rem;
  letter-spacing: 0.08em;
  margin: 0;
}
.section-head .en {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  font-family: var(--font-sans);
}
.lede { color: var(--muted); margin: -8px 0 22px; font-size: 0.95rem; }

/* ideas */
.idea-grid, .project-grid, .social-grid, .health-grid {
  display: grid;
  gap: 14px;
}
.idea-grid { grid-template-columns: 1fr; }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.article {
  display: grid;
  gap: 6px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s;
}
.article:hover { border-color: var(--accent); transform: translateY(-1px); color: inherit; }
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  color: var(--muted);
  font-size: 0.8rem;
}
.article h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
}
.article p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

.thoughts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 14px;
}
.thought blockquote {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.thought footer { margin-top: 10px; color: var(--muted); font-size: 0.8rem; }

.project-grid { grid-template-columns: repeat(3, 1fr); }
.project { text-decoration: none; color: inherit; }
.project:hover { border-color: var(--accent); color: inherit; }
.project h3 { margin: 0 0 8px; font-size: 1.02rem; font-family: var(--font-mono); font-weight: 600; }
.project p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }
.lang-pill {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 8px;
}

/* social */
.social-grid { grid-template-columns: repeat(2, 1fr); }
.social { text-decoration: none; color: inherit; min-height: 150px; }
.social:hover { border-color: var(--accent); color: inherit; }
.social .platform { color: var(--gold); font-size: 0.78rem; letter-spacing: 0.14em; }
.social h3 { margin: 6px 0 8px; font-size: 1.15rem; font-family: var(--font-serif); font-weight: 500; }
.social p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }
.counts { margin-top: 12px; color: var(--muted); font-size: 0.8rem; }
.missing { opacity: 0.78; background: transparent; box-shadow: none; grid-column: 1 / -1; }
.missing h3 { font-family: var(--font-sans); font-size: 1rem; }
.badge-miss {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--muted);
  border: 1px dashed var(--line-strong);
  border-radius: 999px;
  padding: 1px 8px;
  margin-bottom: 8px;
}

/* health */
.health-banner {
  background: var(--cinnabar-soft);
  color: var(--cinnabar);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 0.9rem;
  margin-bottom: 16px;
}
.health-grid { grid-template-columns: repeat(4, 1fr); }
.metric .label { color: var(--muted); font-size: 0.8rem; }
.metric .value {
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1.2;
  margin: 4px 0 0;
}
.metric .unit { font-size: 0.9rem; color: var(--muted); margin-left: 4px; }
.bars { margin-top: 16px; display: grid; gap: 8px; }
.bar-row { display: grid; grid-template-columns: 92px 1fr 64px; gap: 10px; align-items: center; font-size: 0.82rem; color: var(--muted); }
.bar {
  height: 8px;
  background: var(--bg-deep);
  border-radius: 99px;
  overflow: hidden;
}
.bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #4b8a72);
  border-radius: 99px;
}
.empty {
  text-align: center;
  padding: 36px 16px;
  color: var(--muted);
}

/* footer */
.site-footer {
  margin-top: 48px;
  padding: 28px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer p { margin: 0 0 8px; }

.hidden { display: none !important; }
html[lang="en"] .zh { display: none !important; }
html[lang="en"] .en-only { display: revert; }
html[lang="zh-CN"] .en-only { display: none !important; }
html[lang="zh-CN"] .zh { display: revert; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 24px; padding-top: 36px; }
  .portrait { width: 140px; height: 180px; }
  .thoughts, .project-grid, .social-grid, .health-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .wrap { width: min(var(--max), calc(100% - 28px)); }
  .nav { display: none; }
  .thoughts, .project-grid, .social-grid, .health-grid { grid-template-columns: 1fr; }
  h1 { letter-spacing: 0.12em; }
  .bar-row { grid-template-columns: 72px 1fr 52px; }
}