body{margin:0;background:#f7f9fc;color:#183754;font-family:Inter,'Microsoft YaHei',sans-serif}.public-tool-nav{height:64px;position:sticky;top:0;z-index:100;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #e4eaf3;padding:0 5%;background:#fff}.public-tool-nav>a{font-size:22px;font-weight:700}.public-tool-nav nav{display:flex;gap:26px}.public-tool-nav a{color:#174573;text-decoration:none}main#public-tool{max-width:1120px;padding:38px 28px;margin:0 auto}.tool-eyebrow{font-size:11px;letter-spacing:2px;color:#6c94bd}h1{font-size:30px;color:#183754}.tool-intro{color:#7890aa;margin-bottom:30px}.tool{background:white;border:1px solid #dce6f2;border-radius:14px;padding:28px}.tool button{background:#1675ee}.tool-guide{margin-top:34px;line-height:1.9}.tool-guide h2{font-size:19px}.tool-guide p{white-space:pre-wrap;color:#6a819a}.tool-footnote{font-size:12px;color:#8196ad;margin-top:30px}.tool-embedded .public-tool-nav,.tool-embedded .tool-eyebrow,.tool-embedded .tool-guide,.tool-embedded .tool-footnote{display:none}.tool-embedded main#public-tool{padding:20px;margin:0 auto}.tool-embedded h1{font-size:22px}iframe{width:100%;min-height:320px;border:1px solid #e0e7f0}.email-actions{display:flex;gap:8px;flex-wrap:wrap}.email-actions>div{min-width:130px}.tool input,.tool textarea,.tool select{max-width:100%}@media(max-width:640px){.public-tool-nav{height:64px;padding:0 16px}.public-tool-nav nav{gap:12px;font-size:12px}main#public-tool{padding:24px 14px}.tool{padding:16px}}