:root{--color-primary:#2b579a;--color-danger:#e11d48;--color-bg:#f8fafc;--color-card:#fff;--color-text-main:#0f172a;--color-text-muted:#475569;--color-border:#e2e8f0;--header-height:70px;--font-main:system-ui,-apple-system,sans-serif}*{margin:0;padding:0;box-sizing:border-box;font-family:var(--font-main)}body,html{height:100%;background-color:var(--color-bg);color:var(--color-text-main)}.master-header{position:fixed;top:0;left:0;width:100%;height:var(--header-height);background:var(--color-card);border-bottom:1px solid var(--color-border);z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.02)}.header-container{max-width:1400px;margin:0 auto;height:100%;justify-content:space-between;padding:0 24px}.header-container,.logo{display:flex;align-items:center}.logo{gap:12px;text-decoration:none;font-size:22px;font-weight:800;color:var(--color-text-main)}.hamburger{display:flex;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;z-index:51;padding:10px;transition:opacity .2s ease}.hamburger span{display:block;width:24px;height:3px;background-color:var(--color-text-main);border-radius:3px}body:has(.nav-menu.active) .hamburger{opacity:0;pointer-events:none}.nav-menu{position:fixed;top:0;right:-100%;width:300px;max-width:100vw;height:100vh;background:var(--color-card);box-shadow:-10px 0 30px rgba(0,0,0,.1);transition:right .3s cubic-bezier(.4,0,.2,1);z-index:52;overflow-y:auto;display:flex;flex-direction:column}.nav-menu.active{right:0}.drawer-header{height:var(--header-height);padding:0 24px;display:flex;align-items:center;justify-content:space-between;background:var(--color-bg);border-bottom:1px solid var(--color-border)}.drawer-header span{font-size:14px;font-weight:800;letter-spacing:1.5px;color:var(--color-primary)}.close-drawer{background:none;border:none;font-size:38px;cursor:pointer;color:var(--color-text-main);line-height:1;font-weight:300;padding:5px}.nav-menu ul{list-style:none;padding:10px 24px}.nav-menu ul li a{display:block;padding:18px 0;color:var(--color-text-main);text-decoration:none;font-weight:600;border-bottom:1px solid var(--color-border);transition:color .2s}.nav-menu ul li a:hover{color:var(--color-primary)}@media (min-width:1024px){.hamburger{display:none}.nav-menu{position:static;width:auto;height:auto;background:none;box-shadow:none;right:0;display:block;overflow:visible}.nav-menu ul{display:flex;gap:30px;padding:0}.nav-menu ul li a{border-bottom:none;padding:0;font-size:15px;color:var(--color-text-muted);font-weight:500}.drawer-header{display:none}}.main-content{margin-top:calc(var(--header-height) + 20px);padding:0 24px 40px;max-width:1400px;margin-left:auto;margin-right:auto}.adsense-placeholder{background:#e2e8f0;width:100%;height:90px;display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:14px;border-radius:8px;border:1px dashed #cbd5e1;margin:40px 0}.faq-section,.seo-article{max-width:900px;margin:0 auto 50px}.faq-section h2,.seo-article h2{font-size:28px;font-weight:800;margin-bottom:24px;color:var(--color-text-main)}.seo-article p{font-size:16px;line-height:1.7;color:var(--color-text-muted);margin-bottom:20px}.faq-item{background:var(--color-card);border:1px solid var(--color-border);border-radius:8px;margin-bottom:12px;padding:16px 20px;cursor:pointer}.faq-item summary{font-size:16px;font-weight:700;outline:none;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item p{margin-top:12px;font-size:15px;line-height:1.6;color:var(--color-text-muted)}.master-footer{background:#0f172a;padding:40px 24px;width:100%;margin-top:auto}.footer-container{max-width:1400px;margin:0 auto;text-align:center}.footer-links{display:flex;justify-content:center;flex-wrap:wrap;gap:24px;margin-bottom:24px}.footer-links a{color:#cbd5e1;text-decoration:none;font-size:15px;font-weight:500}.footer-links a:hover{color:#fff;text-decoration:underline}.copyright{color:#64748b;font-size:14px}