.interest-content{max-width:500px}.topic-grid{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0;justify-content:center}.topic-chip{padding:8px 16px;border:1px solid #dee0e1;border-radius:20px;font-size:13px;cursor:pointer;background:#fff;color:#636466;transition:all .2s;user-select:none}.topic-chip:hover{border-color:#2e69ff;color:#2e69ff}.topic-chip.active{background:#eef3ff;border-color:#2e69ff;color:#1f57f0;font-weight:700}.logo-img{height:34px;width:auto}.logo{color:#1a4a7c;font-size:19px;font-weight:800;text-decoration:none;letter-spacing:-.5px;white-space:nowrap}.notif-wrapper{position:relative;display:flex;align-items:center;justify-content:center;padding:8px;border-radius:8px;min-width:40px;min-height:40px;text-decoration:none;color:#6b7280;transition:all .15s}.notif-wrapper:hover{background:#f3f4f6;color:#111827}.notif-badge{position:absolute;top:2px;right:2px;background:#ef4444;color:#fff;font-size:10px;font-weight:800;min-width:16px;height:16px;padding:0 4px;border-radius:10px;border:2px solid white;display:none;align-items:center;justify-content:center}.notif-badge.active{display:flex}.ask-btn{background:#2e69ff;color:#fff;border:none;padding:8px 18px;border-radius:9px;font-weight:700;cursor:pointer;font-size:13px;display:inline-flex;align-items:center;gap:6px;transition:all .2s;white-space:nowrap;min-height:38px;box-shadow:0 2px 8px #2e69ff40}.ask-btn:hover{background:#1a54e6;transform:translateY(-1px)}.ask-btn:active{transform:scale(.97)}.ask-icon{width:16px;height:16px}.avatar{width:38px;height:38px;border-radius:50%;border:1px solid #dee0e1;object-fit:cover;cursor:pointer}.mobile-menu-user-box{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid #f3f4f6}.mobile-avatar-large{width:48px;height:48px;border-radius:50%;border:2px solid #2e69ff;object-fit:cover;flex-shrink:0}.user-meta strong{display:block;font-size:16px;color:#111827}.view-prof-link{font-size:13px;color:#2e69ff;text-decoration:none;margin-top:2px;display:block}.view-prof-link:hover{text-decoration:underline}.logout-item{background:none;border:none;width:100%;text-align:left;font:inherit;cursor:pointer;color:#ef4444;font-weight:500}.header[data-astro-cid-3ef6ksr2]{background:#fff;border-bottom:1px solid #e0e0e0;position:fixed;top:0;width:100%;z-index:1000;box-shadow:0 1px 3px #0000000a}.header-container[data-astro-cid-3ef6ksr2]{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 16px;height:56px;gap:12px}.header-left[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:16px;flex-shrink:0}.logo-wrap[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:8px;text-decoration:none}.nav-icons[data-astro-cid-3ef6ksr2]{display:flex;gap:4px;color:#666}.icon-link[data-astro-cid-3ef6ksr2]{color:#6b7280;text-decoration:none;position:relative;display:flex;align-items:center;justify-content:center;padding:8px;border-radius:8px;transition:all .15s;min-width:40px;min-height:40px}.icon-link[data-astro-cid-3ef6ksr2]:hover{background:#f3f4f6;color:#111827}.icon-link[data-astro-cid-3ef6ksr2].active{color:#2e69ff;background:#eef3ff}.header-center[data-astro-cid-3ef6ksr2]{flex:1;max-width:480px;min-width:0}.search-wrapper[data-astro-cid-3ef6ksr2]{position:relative;display:flex;align-items:center}.search-icon[data-astro-cid-3ef6ksr2]{position:absolute;left:12px;pointer-events:none}.search-wrapper[data-astro-cid-3ef6ksr2] input[data-astro-cid-3ef6ksr2]{width:100%;padding:9px 12px 9px 38px;border:.1px solid #e5e7eb;border-radius:9px;font-size:14px;outline:none;background:#e5e7eb;transition:all .15s}.search-wrapper[data-astro-cid-3ef6ksr2] input[data-astro-cid-3ef6ksr2]:focus{border-color:#2e69ff;background:#fff;box-shadow:0 0 0 3px #2e69ff1a}.header-right[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:8px;flex-shrink:0}.mobile-icon-btn[data-astro-cid-3ef6ksr2]{background:none;border:none;cursor:pointer;color:#6b7280;padding:8px;border-radius:8px;display:flex;align-items:center;justify-content:center;min-width:40px;min-height:40px;transition:all .15s}.mobile-icon-btn[data-astro-cid-3ef6ksr2]:hover{background:#f3f4f6;color:#111827}.profile-area[data-astro-cid-3ef6ksr2]{position:relative}.profile-trigger[data-astro-cid-3ef6ksr2]{cursor:pointer;display:flex;align-items:center;padding:4px;border-radius:50%;transition:background .15s}.profile-trigger[data-astro-cid-3ef6ksr2]:hover{background:#f3f4f6}.guest-avatar[data-astro-cid-3ef6ksr2]{color:#6b7280;cursor:pointer;display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:#f3f4f6}.profile-menu-dropdown[data-astro-cid-3ef6ksr2]{position:absolute;top:calc(100% + 8px);right:0;width:240px;background:#fff;border:1px solid #e5e7eb;border-radius:12px;box-shadow:0 10px 40px #0000001f;display:none;flex-direction:column;z-index:2000;padding:6px 0}.profile-menu-dropdown[data-astro-cid-3ef6ksr2].active{display:flex}.dropdown-info[data-astro-cid-3ef6ksr2]{padding:14px 16px 10px}.dropdown-info[data-astro-cid-3ef6ksr2] strong[data-astro-cid-3ef6ksr2]{font-size:15px;color:#111827;display:block}.dropdown-view-profile[data-astro-cid-3ef6ksr2]{font-size:12px;color:#2e69ff;text-decoration:none}.dropdown-view-profile[data-astro-cid-3ef6ksr2]:hover{text-decoration:underline}.dropdown-divider[data-astro-cid-3ef6ksr2]{height:1px;background:#f3f4f6;margin:4px 0}.dropdown-item[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:12px;padding:10px 16px;color:#374151;text-decoration:none;font-size:14px;font-weight:500;background:none;border:none;width:100%;text-align:left;cursor:pointer;transition:background .1s}.dropdown-item[data-astro-cid-3ef6ksr2]:hover{background:#f9fafb}.dropdown-item[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{color:#6b7280;flex-shrink:0}.dropdown-item[data-astro-cid-3ef6ksr2].logout{color:#ef4444}.dropdown-item[data-astro-cid-3ef6ksr2].logout svg[data-astro-cid-3ef6ksr2]{color:#ef4444}.hidden[data-astro-cid-3ef6ksr2]{display:none!important}.mobile-overlay[data-astro-cid-3ef6ksr2]{position:fixed;inset:0;background:#0006;z-index:1999;opacity:0;pointer-events:none;transition:opacity .3s}.mobile-overlay[data-astro-cid-3ef6ksr2].active{opacity:1;pointer-events:auto}.mobile-menu[data-astro-cid-3ef6ksr2]{position:fixed;top:0;left:-300px;width:280px;height:100%;background:#fff;box-shadow:4px 0 20px #00000026;z-index:2001;transition:left .3s ease;overflow-y:auto}.mobile-menu[data-astro-cid-3ef6ksr2].active{left:0}.mobile-menu-header[data-astro-cid-3ef6ksr2]{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid #f3f4f6;background:#fff;position:sticky;top:0;z-index:1}.mobile-menu-brand[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:8px;font-weight:800;font-size:16px;color:#1a4a7c}.mobile-menu-logo[data-astro-cid-3ef6ksr2]{height:28px;width:auto}.close-btn[data-astro-cid-3ef6ksr2]{background:none;border:none;cursor:pointer;color:#6b7280;padding:6px;border-radius:8px;display:flex;align-items:center;justify-content:center;min-width:36px;min-height:36px}.close-btn[data-astro-cid-3ef6ksr2]:hover{background:#f3f4f6;color:#111827}.mobile-menu-content[data-astro-cid-3ef6ksr2]{padding:8px 0}.mobile-menu-item[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:12px;padding:14px 20px;text-decoration:none;color:#333;font-weight:500}.mobile-menu-item[data-astro-cid-3ef6ksr2]:hover{background:#f9fafb}.mobile-menu-item[data-astro-cid-3ef6ksr2].active{background:#eef3ff;color:#2e69ff}.mobile-menu-item[data-astro-cid-3ef6ksr2].active svg[data-astro-cid-3ef6ksr2]{color:#2e69ff}.mobile-menu-item[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{color:#6b7280;flex-shrink:0}.mobile-menu-divider[data-astro-cid-3ef6ksr2]{height:1px;background:#f3f4f6;margin:8px 0}.mobile-search-bar[data-astro-cid-3ef6ksr2]{display:none;padding:8px 16px 12px;border-top:1px solid #f3f4f6;background:#fff}.mobile-search-bar[data-astro-cid-3ef6ksr2].active{display:block}.mobile-search-inner[data-astro-cid-3ef6ksr2]{position:relative;display:flex;align-items:center}.mobile-search-icon[data-astro-cid-3ef6ksr2]{position:absolute;left:12px;pointer-events:none}.mobile-search-bar[data-astro-cid-3ef6ksr2] input[data-astro-cid-3ef6ksr2]{width:100%;padding:10px 40px 10px 38px;border:1px solid #e5e7eb;border-radius:9px;font-size:16px;outline:none;background:#f9fafb;box-sizing:border-box}.mobile-search-bar[data-astro-cid-3ef6ksr2] input[data-astro-cid-3ef6ksr2]:focus{border-color:#2e69ff;background:#fff}.mobile-search-close[data-astro-cid-3ef6ksr2]{position:absolute;right:4px;background:none;border:none;color:#6b7280;cursor:pointer;padding:6px;border-radius:50%;display:flex;align-items:center;min-width:36px;min-height:36px}.hamburger[data-astro-cid-3ef6ksr2]{background:none;border:none;cursor:pointer;display:flex;flex-direction:column;gap:5px;padding:8px;min-width:40px;min-height:40px;align-items:center;justify-content:center;border-radius:8px}.hamburger[data-astro-cid-3ef6ksr2]:hover{background:#f3f4f6}.hamburger[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2]{display:block;width:20px;height:2px;background:#374151;border-radius:2px;transition:all .3s}.hamburger[data-astro-cid-3ef6ksr2].active span[data-astro-cid-3ef6ksr2]:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger[data-astro-cid-3ef6ksr2].active span[data-astro-cid-3ef6ksr2]:nth-child(2){opacity:0}.hamburger[data-astro-cid-3ef6ksr2].active span[data-astro-cid-3ef6ksr2]:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.login-modal[data-astro-cid-3ef6ksr2]{display:none;position:fixed;inset:0;background:#00000080;z-index:3000;padding:16px;overflow-y:auto}.login-modal[data-astro-cid-3ef6ksr2].active{display:flex;align-items:flex-start;justify-content:center;padding-top:10vh}.modal-content[data-astro-cid-3ef6ksr2]{background:#fff;padding:28px 24px;border-radius:16px;width:100%;max-width:400px;text-align:center}.modal-logo-wrap[data-astro-cid-3ef6ksr2]{margin-bottom:12px}.modal-logo[data-astro-cid-3ef6ksr2]{height:40px;width:auto}.modal-content[data-astro-cid-3ef6ksr2] h3[data-astro-cid-3ef6ksr2]{margin:0 0 6px;font-size:20px;color:#111827}.modal-content[data-astro-cid-3ef6ksr2] p[data-astro-cid-3ef6ksr2]{margin:0 0 16px;font-size:14px;color:#6b7280;line-height:1.5}.modal-content[data-astro-cid-3ef6ksr2] input[data-astro-cid-3ef6ksr2]{width:100%;padding:12px 14px;margin:0 0 12px;border:1px solid #e5e7eb;border-radius:10px;font-size:16px;box-sizing:border-box;outline:none}.modal-content[data-astro-cid-3ef6ksr2] input[data-astro-cid-3ef6ksr2]:focus{border-color:#2e69ff;box-shadow:0 0 0 3px #2e69ff1a}.social-login-group[data-astro-cid-3ef6ksr2]{display:flex;flex-direction:column;gap:10px;margin-top:8px}.social-login-btn[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:12px;border-radius:10px;border:1px solid #e5e7eb;background:#fff;cursor:pointer;font-size:15px;font-weight:600;color:#333;transition:all .15s}.social-login-btn[data-astro-cid-3ef6ksr2]:active{transform:scale(.98)}.google-btn[data-astro-cid-3ef6ksr2]:hover{background:#f9fafb}.github-btn[data-astro-cid-3ef6ksr2]{background:#24292f;color:#fff;border-color:#24292f}.github-btn[data-astro-cid-3ef6ksr2]:hover{background:#424a53}.login-submit[data-astro-cid-3ef6ksr2]{background:#2e69ff;color:#fff;border:none;width:100%;padding:12px;border-radius:9px;font-weight:700;font-size:15px;cursor:pointer;transition:all .15s;min-height:46px}.login-submit[data-astro-cid-3ef6ksr2]:hover{background:#1e5ae6}.login-submit[data-astro-cid-3ef6ksr2]:disabled{opacity:.5;cursor:not-allowed}.login-submit[data-astro-cid-3ef6ksr2].loading{position:relative;pointer-events:none;opacity:.85;color:transparent!important}.twitter-btn[data-astro-cid-3ef6ksr2]{background:#1da1f2;color:#fff;border-color:#1da1f2}.twitter-btn[data-astro-cid-3ef6ksr2]:hover{background:#0d8ddb}.twitter-btn[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{flex-shrink:0}.microsoft-btn[data-astro-cid-3ef6ksr2]:hover{background:#f9fafb}.microsoft-btn[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{flex-shrink:0}.login-submit[data-astro-cid-3ef6ksr2].loading:after{content:"";position:absolute;top:50%;left:50%;width:22px;height:22px;margin:-11px 0 0 -11px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:btn-spin .6s linear infinite}@keyframes btn-spin{to{transform:rotate(360deg)}}.close-text[data-astro-cid-3ef6ksr2]{background:none;border:none;color:#9ca3af;margin-top:16px;cursor:pointer;font-size:14px;padding:8px}.close-text[data-astro-cid-3ef6ksr2]:hover{color:#6b7280}.welcome-icon-wrap[data-astro-cid-3ef6ksr2]{width:72px;height:72px;background:#eef3ff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}.search-dropdown[data-astro-cid-3ef6ksr2]{position:absolute;top:calc(100% + 8px);left:0;right:0;background:#fff;border:1px solid #e5e7eb;border-radius:12px;box-shadow:0 10px 40px #0000001f;max-height:400px;overflow-y:auto;z-index:1500;display:none}.search-dropdown[data-astro-cid-3ef6ksr2].active{display:block}.search-dropdown-content[data-astro-cid-3ef6ksr2]{padding:6px 0}.search-result-item[data-astro-cid-3ef6ksr2]{display:block;padding:12px 16px;color:#374151;text-decoration:none;cursor:pointer;font-size:14px;transition:background .1s;border-bottom:1px solid #f9fafb}.search-result-item[data-astro-cid-3ef6ksr2]:hover{background:#f9fafb}.search-result-item[data-astro-cid-3ef6ksr2]:last-child{border-bottom:none}.result-question[data-astro-cid-3ef6ksr2]{font-weight:600;color:#2e69ff;margin-bottom:2px}.result-snippet[data-astro-cid-3ef6ksr2]{font-size:12px;color:#9ca3af}mark[data-astro-cid-3ef6ksr2]{background:#fef3c7;color:#92400e;padding:1px 2px;border-radius:2px;font-weight:700}.mobile-dropdown[data-astro-cid-3ef6ksr2]{position:fixed;top:auto;left:16px;right:16px;max-height:60vh;width:auto;z-index:1500}.desktop-only[data-astro-cid-3ef6ksr2]{display:flex!important}.mobile-only[data-astro-cid-3ef6ksr2]{display:none!important}@media(max-width:768px){.desktop-only[data-astro-cid-3ef6ksr2],.desktop-search[data-astro-cid-3ef6ksr2]{display:none!important}.mobile-only[data-astro-cid-3ef6ksr2]{display:flex!important}.header-container[data-astro-cid-3ef6ksr2]{height:56px;padding:0 12px;gap:6px}.logo-img[data-astro-cid-3ef6ksr2]{height:28px!important}.logo[data-astro-cid-3ef6ksr2]{font-size:15px!important}.ask-btn[data-astro-cid-3ef6ksr2]{padding:8px 14px;font-size:13px}.profile-menu-dropdown[data-astro-cid-3ef6ksr2]{position:fixed;inset:auto 0 0;width:100%;border-radius:16px 16px 0 0;box-shadow:0 -4px 20px #00000026}}@media(max-width:380px){.logo[data-astro-cid-3ef6ksr2],.ask-text[data-astro-cid-3ef6ksr2]{display:none}.ask-btn[data-astro-cid-3ef6ksr2]{padding:8px 10px}}.role-selection[data-astro-cid-3ef6ksr2]{text-align:left;margin-top:16px}.role-selection[data-astro-cid-3ef6ksr2] label[data-astro-cid-3ef6ksr2]{font-size:14px;font-weight:600;color:#374151;margin-bottom:8px;display:block}.role-options[data-astro-cid-3ef6ksr2]{display:flex;flex-wrap:wrap;gap:8px}.role-chip[data-astro-cid-3ef6ksr2]{padding:8px 16px;border:1px solid #dee0e1;border-radius:20px;font-size:13px;cursor:pointer;background:#fff;color:#636466;transition:all .2s;font-weight:500}.role-chip[data-astro-cid-3ef6ksr2]:hover{border-color:#2e69ff;color:#2e69ff}.role-chip[data-astro-cid-3ef6ksr2].active{background:#eef3ff;border-color:#2e69ff;color:#1f57f0;font-weight:700}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;width:100%;background-color:#f1f2f2;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow-x:hidden}.main-content{padding-top:60px;min-height:100vh;display:flex;flex-direction:column}@media(max-width:800px){.main-content{padding-top:56px}}.site-footer{background:#1a1a2e;color:#c4c4d4;margin-top:40px}.footer-inner{max-width:1100px;margin:0 auto;padding:48px 24px 32px;display:grid;grid-template-columns:1fr 2fr;gap:48px}@media(max-width:700px){.footer-inner{grid-template-columns:1fr;gap:32px}}.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;margin-bottom:12px}.footer-logo svg{color:#2e69ff}.footer-tagline{font-size:14px;line-height:1.6;color:#8888a4;max-width:280px}.footer-links-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}@media(max-width:500px){.footer-links-grid{grid-template-columns:1fr 1fr}}.footer-col-title{font-size:13px;font-weight:700;color:#fff;text-transform:uppercase;margin-bottom:14px}.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}.footer-col a{color:#8888a4;text-decoration:none;font-size:14px}.footer-col a:hover{color:#2e69ff}.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 24px;text-align:center;font-size:13px}