:root{--primary:#109484;--primary-dark:#0b6f65;--primary-soft:#ecfdf8;--accent:#f59e0b;--text:#1f2937;--muted:#667085;--line:#e5e7eb;--bg:#f7f9fb;--card:#ffffff;--radius:8px;--shadow:0 16px 38px rgba(16,148,132,0.11);--font:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}*{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;min-height:100vh;color:var(--text);background:var(--bg);font-family:var(--font);line-height:1.7;letter-spacing:0}a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 32px));margin:0 auto}header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,0.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.logo{display:inline-flex;align-items:center;gap:10px;color:var(--primary);font-size:18px;font-weight:800;white-space:nowrap}.logo i{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius);color:#fff;background:var(--primary)}.nav-menu{margin:0;padding:0;list-style:none;display:flex;align-items:center;justify-content:flex-end;gap:4px;flex-wrap:wrap}.nav-menu a{min-height:38px;display:inline-flex;align-items:center;padding:0 12px;border-radius:var(--radius);color:var(--muted);font-size:14px;font-weight:700}.nav-menu a:hover,.nav-menu a.active{color:var(--primary);background:var(--primary-soft)}.hero{padding:76px 0 64px;color:#fff;background:linear-gradient(120deg,rgba(16,148,132,0.92),rgba(37,99,235,0.78)),url("../img/hero-smallbiz.png");background-size:cover;background-position:center}.page-hero{padding:56px 0}.hero h1{max-width:780px;margin:0;font-size:clamp(36px,6vw,58px);line-height:1.08;letter-spacing:0}.hero p{max-width:800px;margin:18px 0 0;color:rgba(255,255,255,0.92);font-size:18px}.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 18px;border:1px solid transparent;border-radius:var(--radius);color:var(--primary);background:#fff;font-weight:800;cursor:pointer}.btn:hover{color:var(--primary-dark)}.btn-primary{color:#fff;background:var(--primary)}.btn-primary:hover{color:#fff;background:var(--primary-dark)}.btn-outline{color:#fff;border-color:rgba(255,255,255,0.58);background:transparent}.btn-outline:hover{color:#fff;background:rgba(255,255,255,0.13)}.section{padding:58px 0}.section-light{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.title{margin:0 0 24px;text-align:center;font-size:30px;line-height:1.25}.features{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.card,.download-box,.content-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card{padding:22px}.card i{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;border-radius:var(--radius);color:var(--primary);background:var(--primary-soft)}.card h3{margin:0 0 8px;font-size:18px}.card p{margin:0;color:var(--muted);font-size:14px}.download-area{background:#ecfdf8}.download-box{padding:30px;text-align:center}.download-box h3{margin:0 0 10px;font-size:22px}.download-box p{max-width:760px;margin:0 auto 22px;color:var(--muted)}.meta{color:#8a94a6}.content-panel{padding:28px}.content-panel h2,.content-panel h3{margin:0 0 10px;font-size:22px}.content-panel h2:not(:first-child),.content-panel h3:not(:first-child){margin-top:24px}.content-panel p,.content-panel li{color:var(--muted)}.content-panel ol{margin:0;padding-left:22px}footer{background:#111827;color:rgba(255,255,255,0.78)}footer p{margin:0;padding:22px 0;text-align:center;font-size:14px}@media (max-width:960px){.nav{align-items:flex-start;flex-direction:column;padding:14px 0}.features{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:620px){.container{width:min(100% - 24px,1120px)}.hero{padding:48px 0}.hero-actions,.btn{width:100%}.features{grid-template-columns:1fr}.nav-menu{justify-content:flex-start}}