:root{
  --bg:#f1f2f4;
  --text:#1f2328;
  --muted:#6b7280;
  --line:#e5e7eb;
  --card:#ffffff;
  --shadow:0 8px 26px rgba(0,0,0,.08);
  --radius:14px;
  --max:1080px;

  --blue:#e8f2ff;
  --green:#eaf7f1;
  --orange:#fff2e5;
  --purple:#f2ecff;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background:var(--bg);
  color:var(--text);
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; }

.banner{
  position:relative;
  height: clamp(190px, 23vw, 320px);
  width:100%;
  overflow:hidden;
  background:#000;
}

.banner img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter: contrast(1.02) saturate(1.05);
}
.logo-badge{
  position:absolute;
  left:calc(50% - var(--max)/2 + 24px);
  bottom:-24px;
  width:56px;
  height:56px;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  letter-spacing:.5px;
}

.shell{
  max-width:var(--max);
  margin:0 auto;
  padding:38px 18px 60px;
}

.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
  padding:26px;
}

.header-title{
  font-size:36px;
  margin:4px 0 18px;
  letter-spacing:-0.6px;
}

.layout{
  display:grid;
  grid-template-columns: 280px 1fr 220px;
  gap:20px;
  align-items:start;
}

@media (max-width: 980px){
  .layout{ grid-template-columns: 1fr; }
  .logo-badge{ left:18px; }
}

.sidebar-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:14px;
  background:#fff;
}

.avatar{
  width:100%;
  border-radius:12px;
  border:1px solid var(--line);
  display:block;
}
.photo-credit{
  font-size:12px;
  color:var(--muted);
  margin-top:8px;
}

.badge{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fafafa;
  margin-top:10px;
  font-size:13px;
  color:var(--text);
}
.badge .label{
  color:var(--muted);
  font-size:12px;
  margin-top:2px;
}
.badge strong{
  display:block;
  font-size:13px;
}

.section-title{
  font-size:14px;
  letter-spacing:.2px;
  margin:14px 0 8px;
  color:var(--muted);
  font-weight:650;
}

.social-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  margin-top:10px;
  font-size:14px;
}
.social-list a:hover{
  background:#f7f7f7;
  text-decoration:none;
}

.main p{
  color:var(--muted);
  margin:0 0 10px;
  line-height:1.7;
  font-size:14.5px;
}
.main h2{
  margin:16px 0 10px;
  font-size:20px;
  letter-spacing:-0.2px;
}

.highlight{
  font-size:26px;
  line-height:1.25;
  margin:10px 0 12px;
  font-weight:750;
}
.highlight .blue{ color:#1f6feb; border-bottom:2px solid rgba(31,111,235,.25); }
.highlight .orange{ color:#c97a00; border-bottom:2px solid rgba(201,122,0,.25); }
.highlight .purple{ color:#7b2cbf; border-bottom:2px solid rgba(123,44,191,.25); }

.pages{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:12px;
}
.pages h3{
  margin:6px 6px 10px;
  font-size:18px;
}
.pages a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  color:var(--text);
  font-size:14px;
}
.pages a:hover{
  background:#f6f7f9;
  text-decoration:none;
}
.pages a.active{
  background:#eef4ff;
  border:1px solid rgba(31,111,235,.25);
}

.stats{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:16px;
}
.stat-card{
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px 14px 12px;
  background:#fff;
}
.stat-card .k{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:750;
  margin-bottom:8px;
}
.stat-card p{
  margin:0;
  color:var(--muted);
  font-size:13.5px;
  line-height:1.55;
}
.stat-card.blue{ background:var(--blue); }
.stat-card.green{ background:var(--green); }
.stat-card.orange{ background:var(--orange); }
.stat-card.purple{ background:var(--purple); }

.footer{
  text-align:center;
  margin-top:26px;
  color:var(--muted);
  font-size:13px;
}

body{
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* banner 不参与拉伸 */
.banner{
  flex: 0 0 auto;
}

/* shell 拉伸占满剩余高度 */
.shell{
  flex: 1 0 auto;
  display: flex;
}

/* panel 变成纵向容器，让 footer 能被推到底 */
.panel{
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* 让三栏主体区域撑开高度 */
.layout{
  flex: 1;
}

/* footer 永远贴底 */
.footer{
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}