*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#f6f7fb;color:#111827}a{color:inherit}
header{position:sticky;top:0;background:#fff;border-bottom:1px solid #e5e7eb;padding:16px 7%;display:flex;justify-content:space-between;gap:15px;align-items:center;z-index:10}
.logo{font-size:22px;font-weight:900;text-decoration:none}.logo span{color:#16a34a}nav{display:flex;gap:10px;flex-wrap:wrap}nav a{text-decoration:none;font-weight:800;color:#4b5563;padding:8px 10px;border-radius:999px}nav a:hover{background:#ecfdf5;color:#166534}
.hero{padding:70px 7%;background:radial-gradient(circle at top right,#22c55e 0,transparent 28%),linear-gradient(135deg,#020617,#0f172a,#111827);color:white;display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
.hero h1{font-size:50px;line-height:1.05;margin:0 0 16px}.hero p{font-size:18px;line-height:1.65;color:#d1d5db}.badge{display:inline-block;background:rgba(34,197,94,.16);border:1px solid rgba(34,197,94,.35);color:#bbf7d0;border-radius:999px;padding:8px 12px;font-weight:900;margin-bottom:16px}
.btn{display:inline-block;background:#22c55e;color:#052e16;text-decoration:none;padding:13px 16px;border-radius:14px;font-weight:900;margin:4px;border:0;cursor:pointer}.btn.white{background:#fff;color:#111827}.btn.dark{background:#111827;color:#fff}.btn.small{font-size:13px;padding:10px 12px}
section{padding:55px 7%}.title{font-size:36px;margin:0 0 10px}.sub{color:#6b7280;line-height:1.6;max-width:960px;margin:0 0 26px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card,.article,.prompt,.tool,.box,.filterbar,.flow{background:#fff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 10px 28px rgba(17,24,39,.06)}
.card{text-decoration:none}.card h3{font-size:23px;margin:0 0 10px}.card p,.tool p{color:#6b7280;line-height:1.55}.visual{height:150px;border-radius:20px;background:linear-gradient(135deg,#dcfce7,#dbeafe);display:grid;place-items:center;font-size:54px;margin-bottom:16px}
.article{max-width:1080px;margin:auto}.article h2{font-size:32px}.article h3{font-size:24px;margin-top:28px}.article p,.article li{color:#4b5563;line-height:1.75}.toc{background:#f9fafb;border:1px solid #e5e7eb;border-radius:18px;padding:18px;margin:22px 0}.toc a{display:block;color:#166534;font-weight:900;text-decoration:none;margin:8px 0}
.prompt{background:#111827;color:#f9fafb;line-height:1.6;position:relative;display:flex;flex-direction:column;gap:12px}.prompt strong{color:#86efac}.prompt .copy{position:absolute;right:16px;top:16px;background:#22c55e;color:#052e16;border:0;border-radius:10px;padding:7px 10px;font-weight:900;cursor:pointer}
.prompt-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;padding-right:80px}.pill{display:inline-block;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:900}.pill.platform{background:#dbeafe;color:#1e3a8a}.pill.ai{background:#dcfce7;color:#166534}.pill.output{background:#fef3c7;color:#92400e}
.prompt-use{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:12px;color:#e5e7eb;font-size:14px}.prompt-use b{color:#fff}
.dark{background:#0f172a;color:#fff}.dark .sub{color:#cbd5e1}
footer{padding:34px 7%;text-align:center;background:#fff;border-top:1px solid #e5e7eb;color:#6b7280;line-height:1.65;font-size:14px}
.tool{display:flex;flex-direction:column;gap:8px}.tool-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.tool h3{margin:0;font-size:21px}.tag{display:inline-block;background:#ecfdf5;color:#166534;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:900}.tags{display:flex;flex-wrap:wrap;gap:6px;margin:5px 0}.muted{color:#6b7280}.filterbar{margin-bottom:22px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}.filterbar button{border:1px solid #d1d5db;background:#fff;border-radius:999px;padding:10px 13px;font-weight:900;cursor:pointer}.filterbar button.active{background:#22c55e;color:#052e16;border-color:#22c55e}
.notice{background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12;border-radius:20px;padding:18px;line-height:1.65;font-size:14px;margin-top:24px}
.flow h3{margin:0 0 8px}.flow p{color:#4b5563;line-height:1.6}.flow ol{padding-left:22px;color:#4b5563;line-height:1.7}
@media(max-width:1100px){.grid4{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1fr}}
@media(max-width:800px){.hero,.grid,.grid2,.grid4{grid-template-columns:1fr}.hero h1{font-size:36px}header{align-items:flex-start;flex-direction:column}.tool-top{align-items:flex-start;flex-direction:column}}