*{box-sizing:border-box;margin:0;padding:0}
:root{
  --blue:#2563EB;--blue-dark:#1D4ED8;--green:#16A34A;--green-bg:#F0FDF4;
  --text:#0F172A;--text2:#475569;--text3:#94A3B8;
  --bg:#FAFAFA;--bg2:#F1F5F9;--border:#E2E8F0;--radius:14px;
}
body{font-family:'Hiragino Sans','Yu Gothic',sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
.nav{background:#fff;border-bottom:1px solid var(--border);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}
.nav-brand{font-size:16px;font-weight:700;color:var(--text);text-decoration:none}
.nav-brand span{color:var(--blue)}
.nav-main{font-size:13px;color:var(--blue);text-decoration:none}
.hero{background:linear-gradient(135deg,#EFF6FF 0%,#DBEAFE 100%);padding:56px 24px 48px;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid #BFDBFE;border-radius:100px;padding:5px 14px;font-size:12px;color:var(--blue);font-weight:600;margin-bottom:16px}
.hero h1{font-size:clamp(24px,5vw,34px);font-weight:800;color:var(--text);line-height:1.3;margin-bottom:12px}
.hero p{font-size:14px;color:var(--text2);max-width:520px;margin:0 auto;line-height:1.7}
.main{max-width:760px;margin:0 auto;padding:40px 16px 80px}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-bottom:48px}
.tool-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;text-decoration:none;color:inherit;transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column}
.tool-card:hover{box-shadow:0 6px 24px rgba(37,99,235,.1);transform:translateY(-2px)}
.tool-icon{font-size:36px;margin-bottom:16px;line-height:1}
.tool-badge{display:inline-flex;align-items:center;gap:4px;background:var(--green-bg);border-radius:100px;padding:3px 10px;font-size:11px;color:var(--green);font-weight:600;margin-bottom:10px;align-self:flex-start}
.tool-title{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px;line-height:1.3}
.tool-desc{font-size:13px;color:var(--text2);line-height:1.7;margin-bottom:16px;flex:1}
.tool-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.tool-tag{background:var(--bg2);border-radius:6px;padding:3px 10px;font-size:11px;color:var(--text3);font-weight:500}
.tool-cta{background:var(--blue);color:#fff;border-radius:10px;padding:11px 20px;font-size:14px;font-weight:600;text-align:center;margin-top:auto}
.tool-card:hover .tool-cta{background:var(--blue-dark)}
.faq-section{margin-bottom:48px}
.faq-title{font-size:20px;font-weight:700;color:var(--text);margin-bottom:20px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:10px;background:#fff}
.faq-q{font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.faq-a{font-size:13px;color:var(--text2);line-height:1.7}
.ai-cta{background:linear-gradient(135deg,#1E40AF 0%,#2563EB 100%);border-radius:var(--radius);padding:32px 24px;text-align:center;margin-bottom:48px}
.ai-cta h2{font-size:18px;font-weight:700;color:#fff;margin-bottom:8px}
.ai-cta p{font-size:13px;color:rgba(255,255,255,.8);margin-bottom:20px;line-height:1.7}
.btn-white{background:#fff;color:var(--blue);border-radius:10px;padding:12px 28px;font-size:14px;font-weight:700;text-decoration:none;display:inline-block;transition:opacity .2s}
.btn-white:hover{opacity:.9}
footer{background:#fff;border-top:1px solid var(--border);padding:24px;text-align:center}
footer p{font-size:12px;color:var(--text3)}
footer a{color:var(--blue);text-decoration:none;margin:0 8px}