:root{--ink:#16151b;--paper:#fffdf7;--green:#95ff3f;--violet:#7654ff;--cyan:#2bd9dd;--muted:#6c6875;--line:#25232b;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,Helvetica,sans-serif;letter-spacing:0}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}.section-inner,.header-inner,.hero-inner{width:min(calc(100% - 40px),var(--max));margin:0 auto}.site-header{height:72px;border-bottom:2px solid var(--line);background:var(--paper);position:relative;z-index:20}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px}.brand img{border:2px solid var(--line);border-radius:4px}.nav{display:flex;align-items:center;gap:8px}.nav a{padding:10px 12px;font-size:14px;font-weight:700}.nav a.active{box-shadow:inset 0 -3px var(--violet)}.nav-download{background:var(--ink);color:#fff!important}.menu-toggle{display:none;border:2px solid var(--line);background:transparent;width:42px;height:42px;font-size:22px}.hero{border-bottom:2px solid var(--line);overflow:hidden}.hero-inner{min-height:650px;display:grid;grid-template-columns:minmax(0,1fr) minmax(470px,.95fr);gap:56px;align-items:center;padding:38px 0 42px}.eyebrow{font-size:12px;font-weight:900;text-transform:uppercase;color:var(--violet);margin-bottom:18px}.hero h1{font-size:clamp(42px,5vw,68px);line-height:1.06;margin:0 0 20px;max-width:650px}.hero-copy>p{font-size:18px;line-height:1.85;color:#4e4a55;margin:0;max-width:600px}.hero-actions{display:flex;gap:12px;margin:28px 0 22px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border:2px solid var(--line);font-weight:900}.button.primary{background:var(--green);box-shadow:5px 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minmax(0,760px);gap:70px;justify-content:center}.article-layout aside{position:sticky;top:24px;height:max-content;border:2px solid var(--line);padding:18px;display:grid;gap:6px}.article-layout aside strong{margin-bottom:8px}.article-layout aside a{padding:8px 10px;background:#f0edf7;font-size:14px}.prose section{padding-bottom:36px;margin-bottom:36px;border-bottom:1px solid #ccc}.prose h2{font-size:30px;margin:8px 0 18px}.prose p{font-size:16px;line-height:2;color:#4d4953}.step-no{display:inline-block;background:var(--green);border:2px solid var(--line);padding:5px 9px;font-weight:900}.article-action{border:2px solid var(--line);padding:30px;background:#e9e4ff}.article-action h2{margin-top:0}.faq-section{padding:76px 0}.faq-layout{display:grid;grid-template-columns:340px 1fr;gap:56px}.faq-intro{position:sticky;top:24px;height:max-content}.faq-intro>span{color:var(--violet);font-size:13px;font-weight:900}.faq-intro h2{font-size:42px;margin:10px 0}.faq-intro 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