:root{--green:#4a9e72;--green-light:#e8f5ee;--green-dark:#2d7a55;--text:#333;--text-light:#666;--bg:#fafaf8;--white:#fff;--border:#e5e5e0;--radius:12px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg);color:var(--text);font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;font-size:16px;line-height:1.7}.site-header{background:var(--white);border-bottom:2px solid var(--green-light);z-index:10;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;max-width:800px;margin:0 auto;padding:1rem 1.5rem;display:flex}.site-title{color:var(--green-dark);font-size:1.25rem;font-weight:700;text-decoration:none}nav a{color:var(--text-light);font-size:.9rem;text-decoration:none}nav a:hover{color:var(--green)}.site-main{max-width:800px;min-height:calc(100vh - 140px);margin:0 auto;padding:2rem 1.5rem}.hero{background:linear-gradient(135deg, var(--green-light), #f0faf4);border-radius:var(--radius);text-align:center;margin-bottom:2.5rem;padding:2.5rem 2rem}.hero h1{color:var(--green-dark);margin-bottom:.75rem;font-size:1.8rem}.hero p{color:var(--text-light);font-size:.95rem}.posts-heading{color:var(--text-light);border-bottom:2px solid var(--green-light);margin-bottom:1rem;padding-bottom:.5rem;font-size:1.1rem;font-weight:600}.post-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:1rem;padding:1.5rem;text-decoration:none;transition:border-color .2s,box-shadow .2s;display:block}.post-card:hover{border-color:var(--green);box-shadow:0 2px 12px #4a9e721a}.post-card .post-date{color:var(--text-light);margin-bottom:.4rem;font-size:.8rem}.post-card .post-title{color:var(--text);margin-bottom:.5rem;font-size:1.1rem;font-weight:700;line-height:1.5}.post-card .post-excerpt{color:var(--text-light);font-size:.9rem;line-height:1.6}.post-tags{flex-wrap:wrap;gap:.4rem;margin-top:.75rem;display:flex}.tag{background:var(--green-light);color:var(--green-dark);border-radius:20px;padding:.2rem .6rem;font-size:.75rem}.post-header{border-bottom:2px solid var(--green-light);margin-bottom:2rem;padding-bottom:1.5rem}.post-header .post-date{color:var(--text-light);margin-bottom:.5rem;font-size:.85rem}.post-header h1{color:var(--text);margin-bottom:.75rem;font-size:1.6rem;line-height:1.5}.post-content{color:var(--text);font-size:1rem;line-height:1.9}.post-content p{margin-bottom:1.2rem}.back-link{color:var(--green);margin-bottom:1.5rem;font-size:.9rem;text-decoration:none;display:inline-block}.back-link:hover{text-decoration:underline}.site-footer{text-align:center;color:var(--text-light);border-top:1px solid var(--border);padding:1.5rem;font-size:.85rem}@media (max-width:600px){.hero h1{font-size:1.4rem}.post-header h1{font-size:1.3rem}}.post-content h2{color:var(--green-dark);border-left:5px solid var(--green);margin:2.2em 0 .8em;padding-left:12px;font-size:1.25rem}.post-content h3{color:var(--green-dark);border-bottom:2px dotted var(--green-light);margin:1.8em 0 .6em;padding-bottom:4px;font-size:1.05rem}.post-content ul{margin:1em 0;padding-left:1.4em}.post-content li{margin:.4em 0}.post-content blockquote{background:var(--green-light);border-left:4px solid var(--green);color:var(--text);border-radius:0 8px 8px 0;margin:1.2em 0;padding:12px 18px}.post-content blockquote p{margin:0}.post-content hr{border:none;border-top:1px dashed var(--border);margin:2.2em 0}.post-content table{border-collapse:collapse;width:100%;margin:1.2em 0;font-size:.92rem}.post-content th{background:var(--green-light);color:var(--green-dark)}.post-content th,.post-content td{border:1px solid var(--border);text-align:left;padding:8px 12px}.post-content strong{color:var(--green-dark)}.post-content em{color:var(--text-light);font-size:.9rem}nav{gap:1.1rem;display:flex}.profile-card{background:linear-gradient(135deg, var(--green-light), #f0faf4);border-radius:var(--radius);text-align:center;margin-bottom:2rem;padding:1.8rem 1rem}.profile-icon{font-size:3rem;line-height:1}.profile-name{color:var(--green-dark);margin:.6rem 0 .2rem;font-size:1.3rem;font-weight:700}.profile-role{color:var(--text-light);margin:0;font-size:.9rem}.form-notice{border-radius:var(--radius);color:#8a6d1a;background:#fff8e6;border:1px solid #f0e0a8;margin:1.2rem 0;padding:1rem 1.2rem;line-height:1.7}.contact-form{margin-top:1.5rem}.form-group{margin-bottom:1.2rem}.form-group label{color:var(--green-dark);margin-bottom:.4rem;font-size:.95rem;font-weight:600;display:block}.form-group input,.form-group textarea{border:1px solid var(--border);box-sizing:border-box;background:var(--white);width:100%;color:var(--text);border-radius:8px;padding:.7rem .9rem;font-family:inherit;font-size:1rem}.form-group input:focus,.form-group textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px var(--green-light);outline:none}.submit-btn{background:var(--green);color:#fff;cursor:pointer;border:none;border-radius:99px;padding:.8rem 2.4rem;font-size:1rem;font-weight:600;transition:background .2s}.submit-btn:hover:not(:disabled){background:var(--green-dark)}.submit-btn:disabled{cursor:not-allowed;background:#bbb}