:root{--brand:#ff4d4f;--text:#1f2430;--muted:#6b7280;--bg:#f6f3f7;--card:#fff;--line:#e7e2ea;--dark:#111827}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.container{max-width:1180px;margin:0 auto;padding:0 20px}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{display:flex;align-items:center;justify-content:space-between;min-height:72px}.logo{font-weight:800;font-size:28px}.nav nav{display:flex;gap:24px;font-size:14px;color:#4b5563}.hero{padding:72px 0 28px;text-align:center}.eyebrow{color:var(--muted);font-size:14px;margin-bottom:10px}.hero h1{font-size:58px;line-height:1.02;max-width:900px;margin:0 auto 16px}.hero p{font-size:20px;color:var(--muted);max-width:920px;margin:0 auto 28px}.chips{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:30px}.chip{padding:10px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px}.section{padding:24px 0 16px}.section h2{font-size:34px;margin:0 0 12px}.muted{color:var(--muted)}.tools-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}.tool-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;display:flex;flex-direction:column;gap:12px;min-height:180px;box-shadow:0 1px 0 rgba(17,24,39,.02)}.tool-card:hover{transform:translateY(-2px)}.tool-card h3{margin:0;font-size:30px;line-height:1.02}.tool-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}.tag{display:inline-block;font-size:12px;background:#fff5f5;color:#b91c1c;border:1px solid #fecaca;padding:5px 8px;border-radius:999px}.btn{display:inline-block;border:0;border-radius:12px;padding:14px 18px;font-weight:700;cursor:pointer}.btn-primary{background:var(--brand);color:#fff}.btn-dark{background:var(--dark);color:#fff}.btn-light{background:#fff;border:1px solid var(--line)}.tool-hero{padding:46px 0 20px}.tool-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:26px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.panel h3,.panel h2{margin-top:0}.field{margin-bottom:16px}.field label{display:block;font-weight:700;margin-bottom:8px}.field input[type=file],.field input[type=text],.field select,.field textarea{width:100%;padding:13px 14px;border:1px solid #d4d4d8;border-radius:12px;background:#fff}.actions{display:flex;gap:12px;flex-wrap:wrap}.result-box{padding:16px;border-radius:14px;background:#f9fafb;border:1px dashed #cbd5e1}.flash{margin:16px 0;padding:14px 16px;border-radius:12px}.flash-error{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}.flash-success{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}.feature{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px}.site-footer{background:#151825;color:#e5e7eb;margin-top:56px;padding:40px 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}.site-footer h4{margin:0 0 12px}.site-footer a{display:block;color:#cbd5e1;margin:6px 0}.notice{font-size:14px;color:#92400e;background:#fffbeb;border:1px solid #fde68a;padding:12px 14px;border-radius:12px}.small{font-size:13px}.faq{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}@media (max-width:1100px){.tools-grid{grid-template-columns:repeat(3,1fr)}.hero h1{font-size:46px}.tool-layout{grid-template-columns:1fr}}@media (max-width:700px){.nav{flex-direction:column;gap:10px;padding:14px 0}.nav nav{flex-wrap:wrap;justify-content:center}.hero h1{font-size:34px}.hero p{font-size:16px}.tools-grid,.features,.footer-grid{grid-template-columns:1fr}.tool-card h3{font-size:24px}}