/* pdf-tools/style.css */
:root{--primary:#3ecf8e;--primary-dark:#2aad72;--primary-light:#d2f5e8;--bg:#f4f6f9;--bg-white:#fff;--border:#e2e8f0;--text-main:#1a202c;--text-sub:#64748b;--text-light:#94a3b8;--radius-md:10px;--shadow-sm:0 1px 3px rgba(0,0,0,.08);--transition:all .2s ease}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text-main);font-size:15px;line-height:1.6;min-height:100vh}
a{text-decoration:none;color:inherit}
#header{position:sticky;top:0;z-index:100;height:64px;background:var(--bg-white);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);display:flex;align-items:center;padding:0 24px;gap:20px}.header-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px}.hl{color:var(--primary-dark)}
#main-content{max-width:840px;margin:0 auto;padding:32px 20px 40px}
.hero{text-align:center;margin-bottom:32px}.hero-icon{font-size:72px;margin-bottom:12px}.hero h1{font-size:28px;font-weight:800;margin-bottom:8px}.hero p{font-size:15px;color:var(--text-sub)}
.features{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-bottom:24px}
.feature-card{background:var(--bg-white);border-radius:var(--radius-md);padding:24px 20px;text-align:center;border:2px solid var(--border);position:relative;overflow:hidden;transition:var(--transition)}.feature-card:hover{border-color:var(--primary);box-shadow:0 4px 12px rgba(0,0,0,.06)}.feature-card.active{border-color:var(--primary);background:linear-gradient(135deg,#f0fdf6,#fafdfc)}
.feature-icon{font-size:40px;margin-bottom:10px}.feature-card h3{font-size:16px;font-weight:700;margin-bottom:6px}.feature-card p{font-size:13px;color:var(--text-light);line-height:1.5}
.tag-avail{display:inline-block;margin-top:10px;padding:3px 12px;background:var(--primary-light);color:var(--primary-dark);border-radius:12px;font-size:11px;font-weight:700}
.tag-upcoming{display:inline-block;margin-top:10px;padding:3px 12px;background:#fef3c7;color:#92400e;border-radius:12px;font-size:11px;font-weight:700}
.info-box{display:flex;align-items:flex-start;gap:16px;padding:20px 24px;background:linear-gradient(135deg,var(--primary-light),#e0f2fe);border-radius:var(--radius-md);border:1px solid var(--border);font-size:14px;line-height:1.7}
.info-icon{font-size:36px;flex-shrink:0}
@media(max-width:600px){.features{grid-template-columns:1fr}}