:root{--bg: #ffffff;--bg-soft: #f6f8fa;--text: #1f2933;--muted: #5b6b7b;--line: #e3e8ee;--brand: #0f6fff;--brand-dark: #0b57cc;--brand-soft: #eaf2ff;--ok: #15803d;--ok-soft: #ecfdf3;--warn: #b45309;--warn-soft: #fff7ed;--radius: 12px;--maxw: 1080px;--prose: 760px;--font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font);font-size:16px;line-height:1.75;color:var(--text);background:var(--bg)}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}h1,h2,h3{line-height:1.3;letter-spacing:-.01em;margin:0 0 .6em}h1{font-size:clamp(1.7rem,3.5vw,2.4rem)}h2{font-size:clamp(1.3rem,2.4vw,1.7rem);margin-top:2.2em}h3{font-size:1.15rem;margin-top:1.6em}p{margin:0 0 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.wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px}.logo{font-weight:700;font-size:1.15rem;color:var(--text);display:flex;align-items:center;gap:8px}.logo .dot{width:10px;height:10px;border-radius:50%;background:var(--brand);display:inline-block}.nav{display:flex;gap:4px;flex-wrap:wrap}.nav a{color:var(--text);padding:6px 10px;border-radius:8px;font-size:.95rem}.nav a:hover,.nav a[aria-current=page]{background:var(--bg-soft);text-decoration:none}@media(max-width:720px){.nav{display:none}.nav-toggle:checked~.nav{display:flex;flex-direction:column;width:100%;padding-bottom:10px}.site-header .wrap{flex-wrap:wrap}.nav-btn{display:inline-block}}.nav-btn{display:none;cursor:pointer;padding:6px 10px;border:1px solid var(--line);border-radius:8px}.nav-toggle{display:none}.hero{padding:56px 0 40px;background:linear-gradient(180deg,var(--brand-soft),#fff 70%)}.hero h1{margin-bottom:.5em}.hero .lead{font-size:1.1rem;color:var(--muted);max-width:720px}.hero .badges{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 22px}.badge{background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:.9rem}.badge.ok{color:var(--ok);background:var(--ok-soft);border-color:#bbf7d0}.btn{display:inline-block;padding:12px 22px;border-radius:10px;font-weight:600;border:1px solid transparent}.btn:hover{text-decoration:none}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark)}.btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}.btn-ghost:hover{background:var(--bg-soft)}.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.section{padding:44px 0}.section.alt{background:var(--bg-soft)}.section h2{margin-top:0}.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}.card h3{margin-top:0}.step{position:relative;padding-left:52px}.step .num{position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700}.cta{border:1px solid #cfe0ff;background:var(--brand-soft);border-radius:var(--radius);padding:22px 24px;margin:2em 0}.cta h3{margin-top:0}.cta .wx{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;font-size:1.1em}.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px;background:#fff}.faq summary{cursor:pointer;font-weight:600;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";float:right;color:var(--muted)}.faq details[open] summary:after{content:"–"}.faq .a{margin-top:8px;color:#334155}.post-list{display:grid;gap:14px}.post-card{border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;background:#fff}.post-card h3{margin:0 0 .3em;font-size:1.1rem}.post-card .meta{color:var(--muted);font-size:.88rem}.tags{display:flex;gap:6px;flex-wrap:wrap}.tag{font-size:.8rem;background:var(--bg-soft);border:1px solid var(--line);padding:1px 8px;border-radius:999px;color:var(--muted)}.article-header{padding:40px 0 10px}.article-header .meta{color:var(--muted);font-size:.92rem}.article{padding-bottom:40px}.article img{border-radius:10px;border:1px solid var(--line)}.related{border-top:1px solid var(--line);padding-top:20px;margin-top:30px}.related ul{padding-left:1.2em}.breadcrumb{font-size:.9rem;color:var(--muted)}.breadcrumb a{color:var(--muted)}.toc{border:1px solid var(--line);border-radius:10px;padding:12px 16px;background:var(--bg-soft);font-size:.93rem;margin:1em 0 1.5em}.toc ul{margin:0;padding-left:1.2em}.notice{border-radius:10px;padding:12px 16px;margin:1.2em 0;border:1px solid}.notice.warn{background:var(--warn-soft);border-color:#fed7aa;color:var(--warn)}.notice.ok{background:var(--ok-soft);border-color:#bbf7d0;color:var(--ok)}.site-footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:.92rem;background:var(--bg-soft)}.site-footer .cols{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.site-footer a{color:var(--muted)}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:4px 0}.price-table td:first-child{font-weight:600}