*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,'Malgun Gothic','Apple SD Gothic Neo',sans-serif;font-size:18px;line-height:1.55;background:#f4f6f9;color:#1a1a1a}
a{color:#1f4e79}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:100}

.topnav{position:sticky;top:0;z-index:40;background:#1f4e79;color:#fff;padding:10px 12px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.topnav .brand{font-weight:800;font-size:17px}
.topnav nav{display:flex;flex-wrap:wrap;gap:6px}
.topnav a{color:#e8f1ff;text-decoration:none;font-size:15px;padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.12);min-height:40px;display:inline-flex;align-items:center}
.topnav a:hover{background:rgba(255,255,255,.22)}

.privacy{background:#fff3cd;color:#7a5200;border-bottom:3px solid #f0b429;padding:12px 14px;font-weight:700;font-size:16px}

header.hero{background:linear-gradient(160deg,#1f4e79,#2d6aa3);color:#fff;padding:28px 16px 32px}
header.hero h1{margin:0 0 8px;font-size:26px;line-height:1.3}
header.hero .sub{font-size:18px;opacity:.95;margin:0 0 14px}
header.hero .goal{background:rgba(255,255,255,.12);border-radius:14px;padding:14px;margin:0 0 16px}
.steps{display:flex;flex-wrap:wrap;gap:8px}
.steps span{background:#fff;color:#1f4e79;font-weight:800;padding:10px 12px;border-radius:12px;font-size:16px}
.contact{margin-top:14px;font-weight:700}

main{max-width:880px;margin:0 auto;padding:16px 14px 80px}
section{margin:28px 0}
section h2{margin:0 0 12px;font-size:23px;color:#1f4e79}
section .lead{color:#444;margin:0 0 14px}

.card{background:#fff;border-radius:16px;padding:16px;margin:12px 0;box-shadow:0 1px 5px rgba(0,0,0,.08)}
.card h3{margin:0 0 6px;font-size:20px}
.muted{color:#555;font-size:16px}
.badge{display:inline-block;background:#e8f1ff;color:#1f4e79;font-size:14px;font-weight:800;padding:4px 10px;border-radius:999px;margin:0 6px 8px 0}
.badge.rec{background:#fff3cd;color:#7a5200}
.badge.ref{background:#fde8e8;color:#b91c1c}
.note-box{background:#fff3cd;border:2px solid #f0b429;border-radius:12px;padding:10px 12px;margin:10px 0;font-weight:700;color:#7a5200;font-size:16px}
.ref-box{background:#fde8e8;border:2px solid #f5a3a3;border-radius:12px;padding:10px 12px;margin:10px 0;font-weight:700;color:#b91c1c;font-size:16px}

.olist{margin:0;padding-left:22px}
.olist li{margin:8px 0}
.ai-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.ai-links a{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 14px;border-radius:12px;background:#1f78d1;color:#fff;text-decoration:none;font-weight:800;font-size:16px}
.ai-links a.ghost{background:#6b7280}

.principle{display:grid;gap:10px}
@media(min-width:720px){.principle{grid-template-columns:1fr 1fr}}
.principle .card h3{font-size:18px}

.pick-table{width:100%;border-collapse:collapse;font-size:16px;background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 1px 5px rgba(0,0,0,.08)}
.pick-table th,.pick-table td{border-bottom:1px solid #e5e7eb;padding:12px 10px;text-align:left;vertical-align:top}
.pick-table th{background:#1f4e79;color:#fff}
.pick-table a{display:inline-block;margin:2px 4px 2px 0;padding:6px 10px;background:#e8f1ff;border-radius:8px;text-decoration:none;font-weight:800;color:#1f4e79;min-height:36px}

.filters{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 8px;background:#f4f6f9;padding:8px 0}
.filters button{border:2px solid #1f4e79;background:#fff;color:#1f4e79;font-weight:800;font-size:15px;padding:10px 12px;border-radius:999px;min-height:44px;cursor:pointer}
.filters button.active{background:#1f4e79;color:#fff}

.prompt-box{white-space:pre-wrap;font-family:inherit;font-size:16px;background:#f1f5f9;padding:12px;border-radius:12px;margin:10px 0;border:1px solid #dbe3ee}
.btn-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
button.copy,a.demo{font-size:16px;padding:12px 14px;border:0;border-radius:12px;background:#1f78d1;color:#fff;font-weight:800;min-height:48px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center}
button.copy.fix{background:#6b7280}
button.copy.copied,a.demo.ok{background:#15803d}
a.demo{background:#15803d}
.fix-list{margin:10px 0 0;padding:0;list-style:none}
.fix-list li{margin:8px 0;padding:10px;background:#f8fafc;border-radius:10px;border:1px solid #e5e7eb}
.fix-list .fix-text{font-size:16px;margin-bottom:8px}

#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#15803d;color:#fff;font-weight:800;padding:12px 18px;border-radius:999px;box-shadow:0 4px 16px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:opacity .2s;z-index:99;font-size:16px}
#toast.show{opacity:1}

footer{background:#1f4e79;color:#fff;padding:24px 16px;text-align:center}
footer a{color:#cfe3ff}
.hidden{display:none !important}