:root{--primary:#1a3a5c;--primary-light:#2a5a8c;--primary-dark:#0f2440;--accent:#c8a45c;--text:#333;--text-light:#666;--text-muted:#999;--bg:#fff;--bg-warm:#fafaf8;--bg-section:#f5f4f0;--border:#e5e3de;--border-light:#f0eeea;--white:#fff;--max-width:1100px;--header-height:70px;--font-heading:var(--font-noto-sans-jp),"Hiragino Kaku Gothic ProN",sans-serif;--font-body:var(--font-noto-sans-jp),"Hiragino Kaku Gothic ProN",sans-serif;--radius:6px;--shadow-sm:0 1px 3px rgba(0,0,0,.06);--shadow-md:0 4px 12px rgba(0,0,0,.08);--shadow-lg:0 8px 24px rgba(0,0,0,.1);--primary-color:var(--primary);--light-gray:var(--bg-section)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-body);color:var(--text);background:var(--bg);line-height:1.75;font-size:15px;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none;transition:color .2s,opacity 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var(--primary);color:var(--primary)}.btn-outline:hover{background:var(--primary);color:var(--white);opacity:1}.text-center{text-align:center}.mb-1{margin-bottom:1rem}.mb-2{margin-bottom:2rem}.mb-4{margin-bottom:4rem}.site-header{height:var(--header-height);background:var(--white);border-bottom:1px solid var(--border-light);position:fixed;top:0;z-index:1000}.site-header,.site-header .container{width:100%;display:flex;align-items:center}.site-header .container{justify-content:space-between}.site-logo{font-size:1.15rem;font-weight:700;color:var(--primary);letter-spacing:.02em}.hamburger{display:none!important}.nav-menu{display:block!important}.nav-menu ul{display:flex;gap:28px;list-style:none;align-items:center;flex-direction:row}.nav-menu ul li a,.nav-menu ul li>span{font-size:.9rem;font-weight:500;color:var(--text);transition:color .2s}.nav-menu ul li a:hover,.nav-menu ul li>span:hover{color:var(--primary);opacity:1}.nav-menu ul li a.btn-primary{color:var(--white);font-size:.85rem;padding:8px 20px}.nav-menu ul li a.btn-primary:hover{color:var(--white)}.nav-dropdown{position:relative}.nav-dropdown>span{display:flex;align-items:center;gap:4px;cursor:pointer}.dropdown-menu{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%);background:var(--white);box-shadow:var(--shadow-lg);border:1px solid var(--border-light);border-radius:var(--radius);padding:6px 0;list-style:none;display:none!important;flex-direction:column;z-index:1100;white-space:nowrap;min-width:160px}.nav-dropdown:hover .dropdown-menu{display:flex!important}.dropdown-menu li a{display:block;padding:9px 20px;font-size:.88rem;color:var(--text)}.dropdown-menu li a:hover{background:var(--bg-section);color:var(--primary);opacity:1}.hamburger{background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px;z-index:1100}.hamburger-line{display:block;width:22px;height:2px;background:var(--primary);transition:transform .3s,opacity .3s}.hamburger-line.open:first-child{transform:translateY(7px) rotate(45deg)}.hamburger-line.open:nth-child(2){opacity:0}.hamburger-line.open:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.prose{max-width:740px;margin:0 auto;line-height:1.85;color:var(--text)}.prose h1{font-size:1.75rem;padding-bottom:.5rem;border-bottom:2px solid var(--accent);margin-bottom:2rem}.prose h3{font-size:1.15rem;margin-top:2rem;margin-bottom:.8rem}.prose p{margin-bottom:1.4rem;text-align:justify}.prose ol,.prose ul{margin-bottom:1.4rem;padding-left:1.5rem}.prose li{margin-bottom:.4rem}.prose blockquote{border-left:3px solid var(--accent);background:var(--bg-warm);padding:1rem 1.5rem;margin:1.5rem 0;color:var(--text-light)}.post-content strong,.prose strong{color:var(--text);background:linear-gradient(transparent 60%,rgba(200,164,92,.25) 0);font-weight:700;padding:0 2px}.prose hr{margin:2.5rem 0;border:none;border-top:1px solid var(--border)}.post-content table,.prose table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.9rem}.post-content th,.prose th{background:var(--primary);color:var(--white);font-weight:600;text-align:left;padding:10px 14px;font-size:.88rem}.post-content td,.prose td{padding:10px 14px;border-bottom:1px solid var(--border)}.post-content tr:nth-child(2n) td,.prose tr:nth-child(2n) td{background:var(--bg-warm)}.post-content{max-width:740px}.post-content img{float:right;width:28%;margin-left:20px;margin-bottom:20px;border-radius:var(--radius)}.post-content h2,.post-content h3{clear:both}.site-footer{background:var(--primary-dark);color:var(--white);padding:48px 0 24px;font-size:.88rem}.site-footer h3{color:var(--white);font-size:1.05rem}.site-footer h4{color:hsla(0,0%,100%,.5);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}.site-footer a{color:hsla(0,0%,100%,.75)}.site-footer 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