:root{--bg: #ffffff;--surface: #f8fafc;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--accent: #2563eb;--accent2: #f5c400}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:1180px;margin:0 auto;padding:0 20px 80px}.hero{background:linear-gradient(180deg,#f8fafc,#fff);border-bottom:1px solid var(--border);margin:0 -20px 28px;padding:56px 20px 40px}.hero-inner{max-width:1140px;margin:0 auto}.kicker{font-size:12px;letter-spacing:2px;color:var(--accent);font-weight:700}.hero h1{font-size:44px;margin:8px 0 6px;letter-spacing:-1px}.sub{color:var(--muted);font-size:18px;max-width:760px;margin:0 0 18px}.stats{display:flex;gap:22px;flex-wrap:wrap}.stats span{background:#fff;border:1px solid var(--border);border-radius:10px;padding:8px 14px;font-size:14px;color:var(--muted)}.stats b{color:var(--text);font-size:18px;margin-right:4px}.toc{position:sticky;top:0;z-index:20;background:#ffffffeb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);margin:0 -20px 28px;padding:10px 20px}.toc-toggle{display:none}.toc ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}.toc li a{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:4px 10px;background:#fff}.toc li a:hover{color:var(--text);border-color:var(--accent);text-decoration:none}.toc .num{font-weight:700;color:var(--accent)}.skill{border:1px solid var(--border);border-radius:16px;padding:26px;margin:0 0 22px;scroll-margin-top:70px;background:#fff}.skill-head{display:flex;align-items:center;gap:14px}.badge{width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:var(--text);color:#fff;font-weight:800;display:grid;place-items:center;font-size:18px}.skill h2{margin:0;font-size:24px}.cat{font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--accent);font-weight:700}.desc{color:var(--muted);margin:12px 0 16px}.imgbox{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--surface);margin-bottom:16px}.imgbox img{display:block;width:100%;max-width:520px;margin:18px auto 8px;border-radius:8px;box-shadow:0 6px 22px #0f172a1a}.imgcap{text-align:center;font-size:12px;color:var(--muted);padding:0 0 12px}.framebox{border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-bottom:16px}.framebar{display:flex;justify-content:space-between;align-items:center;padding:8px 14px;background:var(--surface);border-bottom:1px solid var(--border);font-size:13px;color:var(--muted)}.framebox iframe{width:100%;border:0;display:block;background:#fff}.md-wrap{border-top:1px dashed var(--border);padding-top:8px}.md-wrap summary{cursor:pointer;font-weight:600;color:var(--text);padding:6px 0;-webkit-user-select:none;user-select:none}.md{font-size:15px}.md h1{font-size:22px;border-bottom:1px solid var(--border);padding-bottom:6px;margin-top:24px}.md h2{font-size:19px;margin-top:22px}.md h3{font-size:16px;margin-top:18px}.md code{background:var(--surface);border:1px solid var(--border);border-radius:4px;padding:1px 5px;font-size:13px}.md pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:10px;overflow-x:auto}.md pre code{background:none;border:0;color:inherit;padding:0}.md table{border-collapse:collapse;width:100%;display:block;overflow-x:auto;font-size:13px}.md th,.md td{border:1px solid var(--border);padding:8px 10px;text-align:left;vertical-align:top}.md th{background:var(--surface)}.md blockquote{border-left:3px solid var(--accent2);margin:12px 0;padding:4px 14px;color:var(--muted);background:var(--surface)}.md a{word-break:break-word}.foot{text-align:center;color:var(--muted);font-size:13px;border-top:1px solid var(--border);padding-top:24px}@media (max-width: 720px){.hero h1{font-size:32px}.toc ol{display:none}.toc-open ol{display:flex}.toc-toggle{display:inline-block;background:#fff;border:1px solid var(--border);border-radius:8px;padding:6px 12px;font-size:13px}}