/* ============================================================
   个人网站样式
   配色令牌沿用自项目页参考，集中在 :root，改配色只动这里
   ============================================================ */

:root{
  --ground:#eaeef3; --surface:#ffffff; --surface-2:#f5f8fc;
  --ink:#161d29; --ink-2:#3a4658; --muted:#6c7889; --faint:#98a3b3;
  --line:#d7dee8; --line-2:#e6ebf2;
  --accent:#a1571f; --accent-ink:#8a4a19;
  --shadow:0 1px 2px rgba(20,30,45,.05),0 6px 20px rgba(20,30,45,.06);
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --ground:#0f141b; --surface:#191f29; --surface-2:#1e2731;
    --ink:#e9eef5; --ink-2:#b7c1ce; --muted:#7e8a9b; --faint:#5d6879;
    --line:#2a333f; --line-2:#222b36;
    --accent:#dc9560; --accent-ink:#e7a878;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.28);
  }
}
:root[data-theme="light"]{
  --ground:#eaeef3; --surface:#ffffff; --surface-2:#f5f8fc;
  --ink:#161d29; --ink-2:#3a4658; --muted:#6c7889; --faint:#98a3b3;
  --line:#d7dee8; --line-2:#e6ebf2;
  --accent:#a1571f; --accent-ink:#8a4a19;
  --shadow:0 1px 2px rgba(20,30,45,.05),0 6px 20px rgba(20,30,45,.06);
}
:root[data-theme="dark"]{
  --ground:#0f141b; --surface:#191f29; --surface-2:#1e2731;
  --ink:#e9eef5; --ink-2:#b7c1ce; --muted:#7e8a9b; --faint:#5d6879;
  --line:#2a333f; --line-2:#222b36;
  --accent:#dc9560; --accent-ink:#e7a878;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.28);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);
  line-height:1.65;-webkit-font-smoothing:antialiased;}
.wrap{max-width:820px;margin:0 auto;padding:clamp(2rem,6vw,4.5rem) clamp(1rem,4vw,2rem) 4rem;}

a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

/* ---------- 吸顶导航栏 ---------- */
.topbar{position:sticky;top:0;z-index:10;
  background:color-mix(in srgb,var(--ground) 82%,transparent);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);}
.topbar-inner{max-width:820px;margin:0 auto;display:flex;align-items:center;
  gap:1.1rem;padding:.6rem clamp(1rem,4vw,2rem);}
.brand{font-family:var(--mono);font-size:.88rem;font-weight:700;letter-spacing:.02em;
  color:var(--ink);text-decoration:none;white-space:nowrap;margin-right:auto;}
.brand:hover{color:var(--accent-ink);}
.nav{display:flex;gap:.15rem;overflow-x:auto;scrollbar-width:none;}
.nav::-webkit-scrollbar{display:none;}
.nav a{font-family:var(--mono);font-size:.78rem;font-weight:600;color:var(--muted);
  text-decoration:none;white-space:nowrap;padding:.32rem .55rem;border-radius:7px;
  transition:color .18s ease,background .18s ease;}
.nav a:hover{color:var(--accent-ink);}
.nav a.active{color:var(--accent-ink);background:var(--surface-2);}
.controls{display:flex;gap:.5rem;flex-shrink:0;}
.ctrl-btn{font-family:var(--mono);font-size:.78rem;font-weight:700;letter-spacing:.04em;
  color:var(--ink-2);background:var(--surface);border:1px solid var(--line);
  border-radius:8px;padding:.42rem .75rem;cursor:pointer;box-shadow:var(--shadow);
  transition:border-color .18s ease,color .18s ease;}
.ctrl-btn:hover{border-color:var(--accent);color:var(--accent-ink);}
@media(max-width:640px){.brand{display:none;}.nav{margin-right:auto;}}

/* ---------- 个人介绍区 ---------- */
.hero{padding:1.5rem 0 .5rem;}
.hero h1{font-size:clamp(2rem,6vw,3.1rem);line-height:1.1;margin:0;
  letter-spacing:-.02em;font-weight:750;text-wrap:balance;}
.hero .role{margin:.7rem 0 0;font-size:1.08rem;font-weight:600;color:var(--accent-ink);}
.hero .lede{margin:1.2rem 0 0;font-size:1.04rem;color:var(--ink-2);max-width:58ch;}

.hero-meta{margin-top:1.6rem;display:flex;flex-wrap:wrap;align-items:center;gap:.55rem .7rem;
  font-size:.88rem;color:var(--muted);}
.by-link{font-family:var(--mono);font-size:.78rem;color:var(--ink-2);text-decoration:none;
  background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:.28rem .65rem;
  box-shadow:var(--shadow);transition:border-color .18s ease,color .18s ease;}
.by-link:hover{border-color:var(--accent);color:var(--accent-ink);}

/* ---------- 章节：标题在框外，内容装进气泡卡片 ---------- */
.section{margin-top:2.8rem;scroll-margin-top:4.2rem;}
.sec-head{display:flex;align-items:center;gap:.8rem;margin:0 0 1.1rem;}
.sec-head h2{font-size:1.25rem;font-weight:700;letter-spacing:-.01em;margin:0;white-space:nowrap;}
.sec-head::after{content:"";flex:1;height:1px;background:var(--line);}

/* ---------- 气泡卡片 ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow);padding:1.15rem 1.35rem 1.25rem;
  transition:border-color .18s ease,transform .18s ease;}
.card:hover{border-color:var(--accent);transform:translateY(-2px);}
.card.linkable{cursor:pointer;}

/* ---------- 关于 ---------- */
.about p{margin:0;font-size:.97rem;color:var(--ink-2);max-width:66ch;}
.about p+p{margin-top:.85rem;}

/* ---------- 经历：时间在框外左侧，内容装进卡片 ---------- */
.xp{display:flex;flex-direction:column;gap:1rem;}
.xp-item{display:grid;grid-template-columns:8.5rem 1fr;gap:.35rem 1.2rem;scroll-margin-top:4.2rem;}
@media(max-width:600px){.xp-item{grid-template-columns:1fr;}}
.xp-side{padding-top:1.35rem;}
@media(max-width:600px){.xp-side{padding-top:0;}}
.xp-period{font-family:var(--mono);font-size:.76rem;font-weight:600;color:var(--ink-2);
  white-space:nowrap;font-variant-numeric:tabular-nums;}
.xp-org{margin:.4rem 0 0;font-size:.78rem;color:var(--ink-2);line-height:1.55;
  white-space:pre-line;} /* 支持在 content.js 里用 \n 手动换行 */
@media(max-width:600px){.xp-org{margin-top:.1rem;white-space:normal;}}
.xp-role{font-size:1.05rem;font-weight:700;letter-spacing:-.01em;margin:0;}
.xp-role a{color:var(--ink);text-decoration:none;}
.xp-role a:hover{color:var(--accent-ink);}
.xp-role .ext{font-family:var(--mono);font-size:.78em;color:var(--accent);margin-left:.3rem;}
.xp-role .org{font-size:.88rem;color:var(--muted);font-weight:500;margin-left:.5rem;}
.xp-summary{margin:.35rem 0 0;font-size:.92rem;color:var(--muted);}

ul.tick{margin:.6rem 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:.3rem;}
ul.tick li{position:relative;padding-left:1.1rem;font-size:.92rem;color:var(--ink-2);line-height:1.5;}
ul.tick li::before{content:"";position:absolute;left:.1rem;top:.58em;width:.32rem;height:.32rem;
  border-radius:1px;background:var(--accent);opacity:.75;}

.refs{margin-top:.75rem;display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;}
.chip{font-family:var(--mono);font-size:.73rem;color:var(--ink-2);background:var(--surface-2);
  border:1px solid var(--line-2);border-radius:6px;padding:.16rem .45rem;white-space:nowrap;}

/* ---------- 技能 ---------- */
.skills{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.9rem;}
.skill-group .h{font-family:var(--mono);font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--faint);font-weight:600;margin:0 0 .55rem;}

/* ---------- 教育 / 活动（复用 xp 布局） ---------- */
.edu-note{margin:.35rem 0 0;font-size:.92rem;color:var(--muted);}
.act-name{margin:0;font-size:.95rem;color:var(--ink);font-weight:600;}
.act-desc{margin:.3rem 0 0;font-size:.88rem;color:var(--ink-2);}
#activities ul.tick li{font-size:.88rem;}
#activities .xp{gap:.7rem;}
#activities .card{padding:.8rem 1.35rem;}
#activities .xp-side{padding-top:.9rem;}

/* ---------- 项目侧边快速导航（宽屏 + 滚动到经历区时出现） ---------- */
.side-nav{position:fixed;top:50%;right:1.4rem;transform:translateY(-50%);z-index:9;
  display:flex;flex-direction:column;gap:.15rem;width:12.5rem;
  opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;}
.side-nav.visible{opacity:1;pointer-events:auto;}
.side-nav .sn-title{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--faint);font-weight:600;margin:0 0 .4rem;
  padding-left:.75rem;}
.side-nav a{font-family:var(--mono);font-size:.74rem;font-weight:600;color:var(--muted);
  text-decoration:none;line-height:1.4;padding:.3rem .75rem;
  border-left:2px solid var(--line);transition:color .18s ease,border-color .18s ease;}
.side-nav a:hover{color:var(--accent-ink);}
.side-nav a.active{color:var(--accent-ink);border-left-color:var(--accent);}
@media(max-width:1279px){.side-nav{display:none;}}

/* ---------- 页脚 ---------- */
.foot{margin-top:3.5rem;padding-top:1.2rem;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:.75rem;color:var(--faint);}

/* ---------- 打印 ---------- */
@media print{
  .topbar{display:none;}
  body{background:#fff;}
  .card{box-shadow:none;border-color:#ddd;}
  .xp-item,.card{break-inside:avoid;}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none!important;}
}