*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --blue:#1a56db;
  --blue-dark:#1341ad;
  --green:#0d9548;
  --red:#dc2626;
  --ink:#111827;
  --gray:#6b7280;
  --line:#e5e7eb;
  --bg-tint:#f7f9fc;
  --white:#ffffff;
}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans TC','Segoe UI',sans-serif;color:var(--ink);background:var(--white);font-size:15px;line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.layout{display:flex;max-width:1400px;margin:0 auto}
.wrap{max-width:1400px;margin:0 auto;padding:0 24px}

/* topbar */
.topbar{border-bottom:1px solid var(--line);background:var(--white);position:sticky;top:0;z-index:50}
.topbar-inner{display:flex;align-items:center;gap:20px;padding:12px 24px}
.logo{font-size:17px;font-weight:800;display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;flex-shrink:0}
.search-box{flex:1;max-width:520px;background:var(--bg-tint);border:1px solid var(--line);border-radius:10px;padding:10px 16px;color:var(--gray);font-size:14px}
.btn{display:inline-flex;align-items:center;background:var(--blue);color:#fff;padding:9px 18px;border-radius:8px;font-size:14px;font-weight:600;white-space:nowrap}
.btn:hover{background:var(--blue-dark)}
.btn-ghost{border:1px solid var(--line);padding:8px 16px;border-radius:8px;font-size:14px;font-weight:600}

/* sidebar */
.sidebar{width:220px;flex-shrink:0;padding:24px 12px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:2px}
.sidebar a{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:8px;font-size:14px;font-weight:600;color:var(--ink)}
.sidebar a:hover{background:var(--bg-tint)}
.sidebar a.active{background:#e8effd;color:var(--blue)}
.side-icon{width:18px;height:18px;border-radius:4px;background:var(--line);flex-shrink:0}

.main{flex:1;min-width:0;padding:28px 32px}

/* index cards */
.index-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:32px}
.index-card{border:1px solid var(--line);border-radius:10px;padding:16px 18px}
.index-card .sym{font-size:15px;font-weight:800}
.index-card .name{font-size:12px;color:var(--gray);margin-bottom:6px}
.index-card .chg{font-size:14px;font-weight:700}
.chg.up{color:var(--green)}
.chg.down{color:var(--red)}

/* hero search */
.hero-search{text-align:center;padding:36px 0 44px}
.hero-search h1{font-size:32px;font-weight:800;margin-bottom:14px}
.hero-search p{color:var(--gray);font-size:15px;max-width:640px;margin:0 auto 24px}

/* feature cards */
.feature-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:40px}
.feature-card{border:1px solid var(--line);border-radius:10px;padding:22px 16px;text-align:center}
.feature-card .fi{width:36px;height:36px;border-radius:8px;background:var(--bg-tint);margin:0 auto 10px;display:flex;align-items:center;justify-content:center;color:var(--blue);font-weight:800}
.feature-card .ft{font-size:14px;font-weight:700}

/* data table pair */
.table-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:40px}
.table-card h2{font-size:18px;font-weight:800;margin-bottom:4px}
.table-card .updated{font-size:12px;color:var(--gray);margin-bottom:12px}
table.data{width:100%;border-collapse:collapse;font-size:13px}
table.data th{text-align:left;color:var(--gray);font-weight:600;padding:8px 6px;border-bottom:1px solid var(--line)}
table.data td{padding:9px 6px;border-bottom:1px solid var(--line)}
table.data td.num{text-align:right}
table.data a{color:var(--blue);font-weight:700}

/* news list */
.news-section{margin-bottom:40px}
.news-section h2{font-size:20px;font-weight:800;margin-bottom:16px}
.news-item{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.news-item .time{color:var(--gray);flex-shrink:0;width:36px}
.news-item a{font-weight:600}
.news-item a:hover{color:var(--blue)}
.news-item .src{color:var(--gray)}

/* card grid (article list) */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.article-card{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-card img{aspect-ratio:16/10;object-fit:cover;background:var(--bg-tint)}
.article-card .body{padding:16px}
.article-card h3{font-size:15px;font-weight:700;line-height:1.5;margin-bottom:6px}
.article-card .meta{font-size:12px;color:var(--gray)}

/* footer */
footer{background:var(--bg-tint);padding:40px 0 28px;margin-top:32px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;max-width:1400px;margin:0 auto;padding:0 32px}
.footer-grid h4{font-size:14px;font-weight:700;margin-bottom:12px}
.footer-grid a{display:block;font-size:13px;color:var(--gray);padding:4px 0}
.footer-grid a:hover{color:var(--blue)}
.footer-bottom{max-width:1400px;margin:24px auto 0;padding:16px 32px 0;border-top:1px solid var(--line);font-size:12px;color:var(--gray)}

/* inner page (about/article/author/privacy) */
.page-head{padding:32px 0 20px;border-bottom:1px solid var(--line);margin-bottom:28px}
.page-head h1{font-size:28px;font-weight:800;margin-bottom:8px}
.updated-line{color:var(--gray);font-size:13px}
.lede{font-size:16px;color:#374151;max-width:720px;margin-top:14px}

.toc{border:1px solid var(--line);border-radius:10px;margin-bottom:32px;overflow:hidden;max-width:720px}
.toc-head{padding:14px 20px;font-weight:700;font-size:14px;background:var(--bg-tint);border-bottom:1px solid var(--line)}
.toc a{display:flex;justify-content:space-between;padding:11px 20px;border-bottom:1px solid var(--line);font-size:14px}
.toc a:last-child{border-bottom:none}
.toc a:hover{color:var(--blue)}

article.content{max-width:760px}
article.content h2{font-size:20px;font-weight:800;margin:32px 0 14px;color:var(--ink)}
article.content h3{font-size:16px;font-weight:700;margin:20px 0 8px}
article.content p{margin-bottom:14px;color:#374151}
article.content ul{margin:0 0 14px 20px}
article.content li{margin-bottom:6px;color:#374151}
.callout{background:var(--bg-tint);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin:18px 0;font-size:14px}
.callout a{color:var(--blue);font-weight:700;text-decoration:underline}

.author-card{display:flex;gap:16px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:18px;margin-bottom:20px;max-width:720px}
.author-avatar{width:52px;height:52px;border-radius:50%;background:var(--blue);flex-shrink:0}
.author-card h3{font-size:15px;font-weight:700;margin-bottom:3px}
.author-card p{font-size:13px;color:var(--gray)}

@media(max-width:900px){
  .sidebar{display:none}
  .index-row,.feature-row,.table-pair,.article-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-search h1{font-size:24px}
}