:root{--bg: #0b0d12;--bg-elev: #12151d;--bg-elev-2: #171b25;--border: #232836;--text: #e6e9ef;--text-dim: #9aa3b2;--text-faint: #6b7484;--accent: #f0803c;--accent-dim: #c9662d;--up: #f0533c;--down: #2ec27e;--link: #7aa2f7;--header-bg: rgba(11, 13, 18, .85);--cta-bg: linear-gradient(160deg, #1b1410, var(--bg-elev));--cta-border: #3a2a1c;--radius: 12px;--maxw: 760px;--maxw-wide: 1080px;color-scheme:dark}:root[data-theme=light]{--bg: #ffffff;--bg-elev: #f7f8fa;--bg-elev-2: #eef0f4;--border: #e0e3ea;--text: #14171f;--text-dim: #545c6b;--text-faint: #858d9c;--accent: #d9661f;--accent-dim: #b8541a;--link: #2a5db0;--header-bg: rgba(255, 255, 255, .85);--cta-bg: linear-gradient(160deg, #fff5ec, var(--bg-elev));--cta-border: #f0d3ba;color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif;font-size:16px;line-height:1.75;letter-spacing:.01em;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto;display:block}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}.wrap-wide{width:100%;max-width:var(--maxw-wide);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--border);background:var(--header-bg);backdrop-filter:saturate(160%) blur(10px);position:sticky;top:0;z-index:20}.site-header .inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text);font-size:17px}.brand:hover{text-decoration:none}.brand .mark{width:26px;height:26px;border-radius:7px;flex:none;background:linear-gradient(135deg,var(--accent),#f2b05e);display:grid;place-items:center;color:#1a1005;font-weight:800;font-size:14px}.nav{display:flex;gap:20px;font-size:15px}.nav a{color:var(--text-dim)}.nav a:hover{color:var(--text);text-decoration:none}.hero{padding:72px 0 56px;border-bottom:1px solid var(--border)}.hero h1{font-size:clamp(30px,6vw,46px);line-height:1.25;margin:0 0 18px;letter-spacing:-.01em;font-weight:800}.hero .lede{font-size:clamp(16px,3.6vw,19px);color:var(--text-dim);margin:0 0 28px}.hero .accent{color:var(--accent)}.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#16100a;font-weight:700;padding:12px 22px;border-radius:10px;font-size:16px;border:none;cursor:pointer}.btn:hover{background:var(--accent-dim);text-decoration:none;color:#16100a}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg-elev-2);color:var(--text)}.btn-row{display:flex;gap:12px;flex-wrap:wrap}.section{padding:56px 0;border-bottom:1px solid var(--border)}.section h2{font-size:clamp(21px,4.4vw,26px);margin:0 0 8px;font-weight:700}.section .sub{color:var(--text-dim);margin:0 0 28px;font-size:15px}.grid-3{display:grid;gap:16px;grid-template-columns:repeat(3,1fr)}.card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.card h3{margin:0 0 8px;font-size:17px;font-weight:700}.card p{margin:0;color:var(--text-dim);font-size:15px}.post-list{display:flex;flex-direction:column;gap:2px}.post-item{display:block;padding:20px 0;border-bottom:1px solid var(--border)}.post-item:hover{text-decoration:none}.post-item h3{margin:0 0 8px;font-size:19px;font-weight:700;color:var(--text);line-height:1.45}.post-item:hover h3{color:var(--accent)}.post-item p{margin:0 0 10px;color:var(--text-dim);font-size:15px}.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text-faint)}.tag{display:inline-block;padding:2px 9px;border-radius:999px;background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text-dim);font-size:12px}a.tag:hover{color:var(--accent);border-color:var(--accent);text-decoration:none}.cta{background:var(--cta-bg);border:1px solid var(--cta-border);border-radius:16px;padding:32px;display:grid;gap:26px;grid-template-columns:1fr auto;align-items:center}.cta h2{margin:0 0 10px;font-size:clamp(20px,4.2vw,25px)}.cta p{margin:0 0 6px;color:var(--text-dim);font-size:15px}.cta .expiry{color:var(--accent);font-size:14px;font-weight:600}.cta img{width:240px;border-radius:12px;border:1px solid var(--border)}.cta .hint{font-size:13px;color:var(--text-faint);margin-top:8px;text-align:center}.article{padding:48px 0 64px}.article h1{font-size:clamp(25px,5.2vw,34px);line-height:1.35;margin:0 0 14px;font-weight:800}.prose{font-size:16.5px}.prose h2{font-size:21px;margin:40px 0 12px;font-weight:700}.prose h3{font-size:18px;margin:30px 0 10px;font-weight:700}.prose p{margin:0 0 18px}.prose ul,.prose ol{padding-left:1.3em;margin:0 0 18px}.prose li{margin-bottom:8px}.prose blockquote{margin:0 0 18px;padding:12px 18px;border-left:3px solid var(--accent);background:var(--bg-elev);color:var(--text-dim);border-radius:0 8px 8px 0}.prose code{background:var(--bg-elev-2);padding:2px 6px;border-radius:5px;font-size:.9em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.prose pre{background:var(--bg-elev-2);padding:16px;border-radius:10px;overflow-x:auto}.prose pre code{background:none;padding:0}.prose table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:15px;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--border);padding:9px 12px;text-align:left}.prose th{background:var(--bg-elev-2);font-weight:700}.prose hr{border:none;border-top:1px solid var(--border);margin:32px 0}.prose a{text-decoration:underline;text-underline-offset:3px}.notice{background:var(--bg-elev);border:1px solid var(--border);border-left:3px solid var(--text-faint);padding:12px 16px;border-radius:0 8px 8px 0;font-size:14px;color:var(--text-dim);margin:0 0 28px}.site-footer{border-top:1px solid var(--border);padding:32px 0 44px;color:var(--text-faint);font-size:14px}.site-footer .row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.site-footer a{color:var(--text-dim)}.disclaimer-mini{margin-top:14px;font-size:13px;line-height:1.7}@media(max-width:760px){.grid-3{grid-template-columns:1fr}.cta{grid-template-columns:1fr;padding:24px;justify-items:center;text-align:center}.cta img{width:min(260px,78vw)}.hero{padding:52px 0 40px}.section{padding:42px 0}.nav{gap:14px;font-size:14px}.brand{font-size:16px}}.theme-toggle{display:inline-flex;align-items:center;gap:6px;background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text-dim);border-radius:999px;padding:5px 12px;font-size:13px;cursor:pointer;font-family:inherit;line-height:1.4}.theme-toggle:hover{color:var(--text);border-color:var(--accent)}.theme-toggle svg{width:15px;height:15px;flex:none}.theme-toggle [data-icon]{display:none}:root[data-pref=system] .theme-toggle [data-icon=system],:root[data-pref=light] .theme-toggle [data-icon=light],:root[data-pref=dark] .theme-toggle [data-icon=dark]{display:inline}@media(max-width:520px){.theme-toggle .label{display:none}.theme-toggle{padding:6px 9px}}