.site-header[data-astro-cid-nen7h5rs]{background-color:color-mix(in srgb, var(--color-bg) 85%, transparent);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border);padding:var(--space-4) 0;z-index:100;position:sticky;top:0}.container[data-astro-cid-nen7h5rs]{max-width:var(--max-width,1200px);padding:0 var(--space-6);justify-content:space-between;align-items:center;gap:var(--space-4);margin:0 auto;display:flex}.logo-area[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--space-3);color:var(--color-text);transition:opacity var(--transition);font-size:1.25rem;font-weight:700;text-decoration:none;display:flex}.logo-area[data-astro-cid-nen7h5rs]:hover{opacity:.85}.main-nav[data-astro-cid-nen7h5rs] ul[data-astro-cid-nen7h5rs]{gap:var(--space-8);margin:0;padding:0;list-style:none;display:flex}.main-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{color:var(--color-text-secondary);transition:color var(--transition);padding:var(--space-1) 0;font-size:.95rem;font-weight:500;text-decoration:none;position:relative}.main-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:hover{color:var(--color-text)}.main-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs].active{color:var(--color-accent);font-weight:600}.main-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs].active:after{content:"";background-color:var(--color-accent);border-radius:var(--radius-full);height:2px;position:absolute;bottom:-4px;left:0;right:0}.lang-switcher[data-astro-cid-nen7h5rs]{position:relative}.lang-btn[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;color:var(--color-text-secondary);transition:all var(--transition);background:0 0;padding:.4rem .75rem;font-family:inherit;font-size:.85rem;font-weight:500;display:flex}.lang-btn[data-astro-cid-nen7h5rs]:hover{border-color:var(--color-border-strong);color:var(--color-text);background:var(--color-surface)}.lang-btn[data-astro-cid-nen7h5rs] svg[data-astro-cid-nen7h5rs]{flex-shrink:0}.lang-dropdown[data-astro-cid-nen7h5rs]{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:var(--space-1);z-index:200;min-width:160px;max-height:320px;display:none;position:absolute;top:calc(100% + 6px);right:0;overflow-y:auto}.lang-dropdown[data-astro-cid-nen7h5rs].open{display:block}.lang-dropdown[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{color:var(--color-text-secondary);border-radius:var(--radius-sm);transition:all var(--transition);padding:.5rem .75rem;font-size:.875rem;font-weight:500;text-decoration:none;display:block}.lang-dropdown[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:hover{background:var(--color-surface-2);color:var(--color-text)}.lang-dropdown[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs].active{background:var(--color-accent);color:var(--color-on-accent)}.menu-toggle[data-astro-cid-nen7h5rs]{cursor:pointer;padding:var(--space-1);background:0 0;border:none;flex-direction:column;gap:5px;display:none}.menu-toggle[data-astro-cid-nen7h5rs] .bar[data-astro-cid-nen7h5rs]{background-color:var(--color-text);border-radius:var(--radius-sm);width:24px;height:2px;transition:transform var(--transition), opacity var(--transition);display:block}@media (width<=768px){.menu-toggle[data-astro-cid-nen7h5rs]{display:flex}.main-nav[data-astro-cid-nen7h5rs]{background-color:color-mix(in srgb, var(--color-bg) 95%, transparent);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border);padding:var(--space-4) var(--space-6);display:none;position:absolute;top:100%;left:0;right:0}.main-nav[data-astro-cid-nen7h5rs].open{display:block}.main-nav[data-astro-cid-nen7h5rs] ul[data-astro-cid-nen7h5rs]{flex-direction:column;gap:0}.main-nav[data-astro-cid-nen7h5rs] li[data-astro-cid-nen7h5rs]{border-bottom:1px solid var(--color-border)}.main-nav[data-astro-cid-nen7h5rs] li[data-astro-cid-nen7h5rs]:last-child{border-bottom:none}.main-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{padding:.75rem 0;display:block}.main-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs].active:after{display:none}.menu-toggle[data-astro-cid-nen7h5rs][aria-expanded=true] .bar[data-astro-cid-nen7h5rs]:first-child{transform:translateY(7px)rotate(45deg)}.menu-toggle[data-astro-cid-nen7h5rs][aria-expanded=true] .bar[data-astro-cid-nen7h5rs]:nth-child(2){opacity:0}.menu-toggle[data-astro-cid-nen7h5rs][aria-expanded=true] .bar[data-astro-cid-nen7h5rs]:nth-child(3){transform:translateY(-7px)rotate(-45deg)}.lang-btn[data-astro-cid-nen7h5rs] span[data-astro-cid-nen7h5rs]{display:none}.lang-dropdown[data-astro-cid-nen7h5rs]{right:-.5rem}}.site-footer[data-astro-cid-jo6i4kqk]{background-color:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--space-8) 0;margin-top:auto}.container[data-astro-cid-jo6i4kqk]{max-width:var(--max-width,1200px);padding:0 var(--space-6);justify-content:space-between;align-items:center;gap:var(--space-4);flex-wrap:wrap;margin:0 auto;display:flex}.copyright[data-astro-cid-jo6i4kqk]{color:var(--color-text-muted);margin:0;font-size:.875rem}.social-links[data-astro-cid-jo6i4kqk]{gap:var(--space-4);display:flex}.social-links[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]{color:var(--color-text-secondary);transition:color var(--transition), transform var(--transition);justify-content:center;align-items:center;display:flex}.social-links[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]:hover{color:var(--color-accent);transform:translateY(-2px)}@media (width<=480px){.container[data-astro-cid-jo6i4kqk]{text-align:center;flex-direction:column}}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-ext-wght-normal.BOeWTOD4.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-wght-normal.DqGufNeO.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-ext-wght-normal.DlzME5K_.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-wght-normal.CkhJZR-_.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-vietnamese-wght-normal.CBcvBZtf.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-ext-wght-normal.DO1Apj_S.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-wght-normal.Dx4kXJAl.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--font-sans:"Inter Variable", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;--color-bg:#fff;--color-surface:#f8f9fb;--color-surface-2:#f1f3f7;--color-text:#111827;--color-text-secondary:#4b5563;--color-text-muted:#6b7280;--color-border:#e5e7eb;--color-border-strong:#d1d5db;--color-accent:#4f46e5;--color-accent-hover:#4338ca;--color-accent-bright:#6366f1;--color-accent-soft:#eef2ff;--color-on-accent:#fff;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:999px;--shadow-sm:0 1px 2px #1118270d;--shadow-md:0 8px 24px #11182714;--shadow-lg:0 20px 40px #1118271f;--transition:.2s ease;--max-width:1200px;--content-width:720px;--color-primary:var(--color-text);--color-secondary:var(--color-text-secondary)}*,:before,:after{box-sizing:border-box}html{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{background-color:var(--color-bg);min-height:100vh;color:var(--color-text);flex-direction:column;margin:0;padding:0;line-height:1.6;display:flex}main{flex:1}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}h1,h2,h3,h4,h5,h6{color:var(--color-text);letter-spacing:-.02em;margin:0 0 1rem;font-weight:700;line-height:1.25}p{color:var(--color-text-secondary);margin:0 0 1.5rem;line-height:1.65}:focus-visible{outline:2px solid var(--color-accent-bright);outline-offset:2px;border-radius:var(--radius-sm)}::selection{background:var(--color-accent-soft);color:var(--color-accent-hover)}.skip-link{left:var(--space-4);z-index:1000;background:var(--color-accent);color:var(--color-on-accent);padding:var(--space-2) var(--space-4);border-radius:var(--radius-md);box-shadow:var(--shadow-md);transition:top var(--transition);font-size:.875rem;font-weight:600;text-decoration:none;position:absolute;top:-100px}.skip-link:focus{top:var(--space-4)}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}