:root{--mint-primary:#7AC9C3;--mint-dark:#4FB6AD;--mint-light:#E9F6F5;--text-color:#1F2D2D;--text-secondary:#5A6B6B;--border-color:#E8EAEA;--sidebar-width:280px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text-color);background:#ffffff;line-height:1.7;font-size:16px}a{color:var(--mint-dark);text-decoration:none}a:hover{text-decoration:underline}.header{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;border-bottom:1px solid var(--border-color);position:-webkit-sticky;position:sticky;top:0;background:#fff;z-index:100}.header-logo{font-size:22px;font-weight:700;color:var(--text-color)}.header-logo,.header-logo:hover{text-decoration:none}.header-logo span{color:var(--mint-dark)}.header-cta{display:inline-block;padding:10px 24px;background:var(--mint-dark);color:#fff;border-radius:24px;font-weight:600;font-size:14px;text-decoration:none;transition:background .2s}.header-cta:hover{background:#3da399;text-decoration:none}.page-layout{display:flex;min-height:calc(100vh - 65px)}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);border-right:1px solid var(--border-color);padding:24px 0;position:-webkit-sticky;position:sticky;top:65px;height:calc(100vh - 65px);overflow-y:auto}.sidebar-category{padding:0}.sidebar-category-title{display:flex;align-items:center;gap:8px;padding:10px 24px;font-size:15px;font-weight:600;color:var(--text-color);cursor:pointer;transition:color .15s;border:none;background:none;width:100%;text-align:left}.sidebar-category-title.active,.sidebar-category-title:hover{color:var(--mint-dark)}.sidebar-category-title .arrow{font-size:10px;transition:transform .2s;color:var(--text-secondary)}.sidebar-category-title.active .arrow{transform:rotate(90deg)}.sidebar-items{padding:0;list-style:none}.sidebar-item{display:block;padding:8px 24px 8px 48px;font-size:14px;color:var(--text-secondary);text-decoration:none;transition:color .15s}.sidebar-item:hover{color:var(--mint-dark);text-decoration:none}.sidebar-item.active{color:var(--mint-dark);font-weight:500}.mobile-dropdown{display:none;margin:16px}.mobile-dropdown select{width:100%;padding:14px 16px;font-size:16px;border:1px solid var(--border-color);border-radius:8px;color:var(--text-color);background:#fff;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%235A6B6B' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;cursor:pointer}.mobile-dropdown select:focus{outline:none;border-color:var(--mint-dark)}.content{flex:1 1;max-width:720px;padding:40px 48px}.content h1{font-size:28px;font-weight:700;margin-bottom:8px;line-height:1.3}.content-subtitle{font-size:16px;color:var(--text-secondary);margin-bottom:40px}.article-entry{margin-bottom:36px}.article-entry h2{font-size:20px;font-weight:700;line-height:1.4}.article-entry h2,.article-entry p{margin-bottom:12px;color:var(--text-color)}.article-entry p{font-size:16px;line-height:1.7}.article-entry a{color:var(--mint-dark);font-weight:500}.read-more{display:inline-flex;align-items:center;gap:4px;font-size:15px;font-weight:600;color:var(--mint-dark);margin-top:4px}.read-more:hover{text-decoration:none;opacity:.85}.suggest-banner{margin-top:48px;padding:32px;background:var(--mint-light);border-radius:12px;text-align:center}.suggest-banner p{font-size:16px;color:var(--text-secondary);margin-bottom:16px}.suggest-banner a{display:inline-block;padding:12px 28px;background:var(--mint-dark);color:#fff;border-radius:24px;font-weight:600;font-size:15px;text-decoration:none;transition:background .2s}.suggest-banner a:hover{background:#3da399;text-decoration:none}.page-footer{text-align:center;padding:24px;border-top:1px solid var(--border-color);color:#999;font-size:13px;margin-top:48px}@media (max-width:768px){.sidebar{display:none}.mobile-dropdown{display:block}.content{padding:24px 20px;max-width:100%}.content h1{font-size:24px}.header{padding:14px 20px}.header-logo{font-size:18px}.header-cta{padding:8px 16px;font-size:12px;white-space:nowrap}}