:root{
  --bg:#ffffff; --bg-soft:#f6f8fb; --bg-card:#ffffff;
  --text:#1a2233; --text-soft:#5b6577; --text-mute:#8b95a7;
  --line:#e6eaf0; --brand:#2563eb; --brand-soft:#eff4ff;
  --ok:#10b981; --warn:#f59e0b; --bad:#ef4444;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
  --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;height:60px;gap:26px}
.logo{font-weight:700;font-size:17px;color:var(--text);letter-spacing:.3px}
.logo span{color:var(--brand)}
.nav nav{display:flex;gap:22px;margin-left:auto}
.nav nav a{color:var(--text-soft);font-size:14.5px;font-weight:500}
.nav nav a:hover{color:var(--brand);text-decoration:none}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);
  border-radius:8px;padding:6px 11px;font-size:14px;cursor:pointer;color:var(--text-soft)}

/* ---------- Hero ---------- */
.hero{
  padding:64px 0 52px;background:
    radial-gradient(900px 380px at 12% -8%,#e8f0ff 0%,transparent 62%),
    radial-gradient(700px 320px at 92% 4%,#eafaf5 0%,transparent 60%);
  border-bottom:1px solid var(--line);
}
.hero-in{display:flex;gap:38px;align-items:center;flex-wrap:wrap}
.avatar{
  width:132px;height:132px;border-radius:50%;flex:0 0 auto;overflow:hidden;
  border:4px solid #fff;box-shadow:0 6px 22px rgba(37,99,235,.18);background:var(--bg-soft);
}
.hero-txt{flex:1;min-width:280px}
.badge{
  display:inline-block;background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;margin-bottom:14px;
  border:1px solid #dbe6ff;
}
h1{font-size:36px;line-height:1.25;letter-spacing:-.5px;margin-bottom:8px}
h1 em{font-style:normal;color:var(--brand)}
.subtitle{font-size:17px;color:var(--text-soft);margin-bottom:18px;max-width:620px}
.tagrow{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.tag{background:#fff;border:1px solid var(--line);color:var(--text-soft);
  font-size:13px;padding:5px 11px;border-radius:8px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:10px 20px;border-radius:10px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.18s;
}
.btn-p{background:var(--brand);color:#fff}
.btn-p:hover{background:#1d4ed8;text-decoration:none}
.btn-s{background:#fff;color:var(--text);border-color:var(--line)}
.btn-s:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}

/* ---------- 区块 ---------- */
section{padding:58px 0}
section:nth-of-type(even){background:var(--bg-soft)}
.sec-head{margin-bottom:32px}
.sec-kicker{font-size:13px;font-weight:700;letter-spacing:1.6px;color:var(--brand);text-transform:uppercase}
h2{font-size:27px;margin:6px 0 8px;letter-spacing:-.3px}
.sec-desc{color:var(--text-soft);font-size:15.5px;max-width:720px}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:26px}
.card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{font-size:17px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card p{color:var(--text-soft);font-size:15px;margin-bottom:12px}
.card p:last-child{margin-bottom:0}
.facts{list-style:none;display:grid;gap:10px}
.facts li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-soft)}
.facts b{color:var(--text);font-weight:600;min-width:74px;display:inline-block}
.quote{
  border-left:3px solid var(--brand);background:var(--brand-soft);
  padding:14px 18px;border-radius:0 10px 10px 0;color:#1e3a8a;font-size:15px;margin-top:8px;
}

/* ---------- 技能 ---------- */
.skill-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 34px}
.skill{margin-bottom:6px}
.skill-top{display:flex;justify-content:space-between;font-size:14.5px;margin-bottom:6px}
.skill-top b{font-weight:600}
.skill-top span{color:var(--text-mute);font-size:13px}
.bar{height:8px;background:#eaeef4;border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,#3b82f6,#2563eb);transition:width 1.1s cubic-bezier(.22,1,.36,1)}
.bar.g i{background:linear-gradient(90deg,#34d399,#10b981)}
.bar.y i{background:linear-gradient(90deg,#fbbf24,#f59e0b)}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.chip{background:#fff;border:1px solid var(--line);border-radius:9px;padding:7px 13px;font-size:13.5px;color:var(--text-soft)}
.chip.learn{border-color:#bbf7d0;background:#f0fdf4;color:#15803d}
.chip.todo{border-color:#fecaca;background:#fef2f2;color:#b91c1c}
.chips-label{font-size:13.5px;font-weight:700;color:var(--text-mute);margin:24px 0 10px;letter-spacing:.4px}

/* ---------- 项目 ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.proj{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.2s}
.proj:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(16,24,40,.10)}
.proj .num{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:1.2px}
.proj h3{font-size:16.5px;margin:8px 0 10px}
.proj p{color:var(--text-soft);font-size:14.5px;flex:1;margin-bottom:14px}
.proj .stack{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.proj .stack span{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;
  font-size:12px;padding:3px 8px;color:var(--text-mute)}
.proj .meta{font-size:13px;color:var(--text-mute);border-top:1px dashed var(--line);padding-top:12px}

/* ---------- 自评两栏 ---------- */
.eval{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.eval-col{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.eval-col h3{font-size:16.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.eval-col.ok{border-top:3px solid var(--ok)}
.eval-col.no{border-top:3px solid var(--bad)}
.eval-col ul{list-style:none;display:grid;gap:11px}
.eval-col li{font-size:14.8px;color:var(--text-soft);padding-left:22px;position:relative}
.eval-col.ok li::before{content:"✓";position:absolute;left:0;top:0;color:var(--ok);font-weight:700}
.eval-col.no li::before{content:"✕";position:absolute;left:0;top:0;color:var(--bad);font-weight:700}
.eval-col li b{color:var(--text)}

/* ---------- 时间线 ---------- */
.tl{position:relative;padding-left:30px}
.tl::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-27px;top:7px;width:14px;height:14px;
  border-radius:50%;background:#fff;border:3px solid var(--brand)}
.tl-when{font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.6px}
.tl-item h3{font-size:17px;margin:3px 0 6px}
.tl-item .goal{font-size:14.5px;color:var(--text-soft);margin-bottom:10px}
.tl-item ul{margin-left:17px;display:grid;gap:6px}
.tl-item li{font-size:14.5px;color:var(--text-soft)}
.tl-item li b{color:var(--text)}

/* ---------- 兴趣 ---------- */
.hobby-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.hobby{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.hobby .ic{font-size:26px;margin-bottom:10px}
.hobby h3{font-size:16px;margin-bottom:8px}
.hobby p{font-size:14.5px;color:var(--text-soft)}

/* ---------- 页脚 ---------- */
footer{background:#0f172a;color:#cbd5e1;padding:44px 0 30px;margin-top:0}
footer h3{color:#fff;font-size:17px;margin-bottom:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;margin-bottom:26px}
footer p,footer li{font-size:14.5px;color:#94a3b8}
footer ul{list-style:none;display:grid;gap:8px}
footer a{color:#93c5fd}
.foot-bar{border-top:1px solid #1e293b;padding-top:18px;font-size:13.5px;color:#64748b;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media(max-width:880px){
  .nav nav{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);flex-direction:column;padding:12px 22px;gap:14px}
  .nav nav.open{display:flex}
  .nav-toggle{display:block}
  .about-grid,.eval,.foot-grid{grid-template-columns:1fr}
  .proj-grid,.hobby-grid{grid-template-columns:1fr}
  .skill-grid{grid-template-columns:1fr}
  h1{font-size:29px}
  .hero{padding:44px 0 38px}
}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}