:root{--bg-primary:#1a1b20;--bg-secondary:#22232a;--bg-tertiary:#2a2c34;--bg-card:#25262e;--bg-card-hover:#2d2f38;--bg-input:#2a2c34;--bg-navbar:rgba(26,27,32,0.92);--bg-sidebar:#22232a;--text-primary:#f0f0f2;--text-secondary:#a8aab8;--text-muted:#5c5f72;--violet-50:#f7f0ff;--violet-100:#efe0ff;--violet-200:#debfff;--violet-300:#ca98ff;--violet-400:#b87eff;--violet-500:#ae72f9;--violet-600:#9055e0;--violet-700:#7439c7;--violet-800:#5a23ae;--violet-900:#421291;--accent-primary:var(--violet-500);--accent-primary-rgb:174,114,249;--accent-primary-light:rgba(174,114,249,0.15);--accent-primary-hover:var(--violet-400);--accent-secondary:var(--violet-400);--accent-secondary-rgb:184,126,255;--text-accent:var(--violet-300);--accent-success:#34d399;--accent-success-light:rgba(52,211,153,0.1);--accent-warning:#fbbf24;--accent-danger:#f87171;--accent-info:#60a5fa;--border-primary:#33353f;--border-secondary:#3e404c;--border-accent:rgba(174,114,249,0.3);--shadow-sm:0 1px 3px rgba(0,0,0,0.35);--shadow-md:0 4px 12px rgba(0,0,0,0.45);--shadow-lg:0 8px 32px rgba(0,0,0,0.55);--shadow-glow:0 0 25px rgba(174,114,249,0.25);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--transition-fast:150ms ease;--transition-base:250ms ease;--transition-slow:400ms ease;--navbar-height:64px;--sidebar-width:260px;--max-content-width:1200px;--gradient-primary:linear-gradient(135deg,#ae72f9,#9055e0);--gradient-hero:linear-gradient(135deg,rgba(174,114,249,0.07),rgba(144,85,224,0.04));--gradient-card:linear-gradient(145deg,#25262e,#2a2c34);--glass-bg:rgba(26,27,27,32,0.78);--glass-border:rgba(174,114,249,0.12);--glass-blur:20px;--glass-shadow:0 25px 50px -12px rgba(0,0,0,0.6);--hero-bg:radial-gradient(circle at 50% 50%,rgba(174,114,249,0.12) 0%,var(--bg-primary) 100%);--hero-text-main:#ffffff;--hero-text-sub:rgba(255,255,255,0.5);--hero-pill-bg:rgba(174,114,249,0.05);--hero-pill-border:rgba(174,114,249,0.15);--hero-pill-text:var(--violet-200);--hero-ticker-text:rgba(255,255,255,0.25);--hero-ticker-border:rgba(174,114,249,0.05);--hero-btn-primary-bg:#ffffff;--hero-btn-primary-text:#000000;--hero-btn-outline-text:#ffffff;--hero-btn-outline-border:rgba(255,255,255,0.15);--hero-btn-outline-hover:rgba(255,255,255,0.08)}@keyframes shake{0%,to{transform:translateX(0)}25%{transform:translateX(-5px)}50%{transform:translateX(5px)}75%{transform:translateX(-5px)}}.animate-shake{animation:shake .4s ease-in-out}.light-theme{--bg-primary:#f7f8fa;--bg-secondary:#ffffff;--bg-tertiary:#eef0f3;--bg-card:#ffffff;--bg-card-hover:#f3f4f7;--bg-input:#ffffff;--bg-navbar:rgba(255,255,255,0.92);--bg-sidebar:#f7f8fa;--text-primary:#18191f;--text-secondary:#4b5063;--text-muted:#8a8fa8;--violet-50:#f7f0ff;--violet-100:#efe0ff;--violet-200:#debfff;--violet-300:#ca98ff;--violet-400:#b87eff;--violet-500:#ae72f9;--violet-600:#9055e0;--violet-700:#7439c7;--violet-800:#5a23ae;--violet-900:#421291;--accent-primary:var(--violet-600);--accent-primary-rgb:144,85,224;--accent-primary-light:var(--violet-50);--accent-primary-hover:var(--violet-700);--accent-secondary:var(--violet-500);--accent-secondary-rgb:174,114,249;--text-accent:var(--violet-700);--accent-success:#059669;--accent-success-light:rgba(5,150,105,0.09);--accent-warning:#d97706;--accent-danger:#dc2626;--accent-info:#2563eb;--border-primary:#e3e5ed;--border-secondary:#d0d3df;--border-accent:rgba(174,114,249,0.22);--shadow-sm:0 1px 3px rgba(0,0,0,0.07);--shadow-md:0 4px 12px rgba(0,0,0,0.09);--shadow-lg:0 8px 30px rgba(0,0,0,0.11);--shadow-glow:0 0 20px rgba(174,114,249,0.18);--gradient-primary:linear-gradient(135deg,#ae72f9,#9055e0);--gradient-hero:linear-gradient(135deg,rgba(174,114,249,0.05),rgba(144,85,224,0.03));--gradient-card:linear-gradient(145deg,#ffffff,#f7f8fa);--glass-bg:rgba(255,255,255,0.82);--glass-border:rgba(174,114,249,0.1);--glass-blur:16px;--glass-shadow:0 15px 40px rgba(0,0,0,0.1);--hero-bg:radial-gradient(circle at 50% 50%,var(--violet-50) 0%,#ffffff 100%);--hero-text-main:#18191f;--hero-text-sub:#4b5063;--hero-pill-bg:var(--violet-50);--hero-pill-border:var(--violet-100);--hero-pill-text:var(--violet-700);--hero-ticker-text:rgba(110,110,120,0.35);--hero-ticker-border:var(--violet-50);--hero-btn-primary-bg:#18191f;--hero-btn-primary-text:#ffffff;--hero-btn-outline-text:#18191f;--hero-btn-outline-border:#d0d3df;--hero-btn-outline-hover:#f3f4f7}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:700;line-height:1.25;letter-spacing:-.02em}h1{font-size:2.5rem}h2{font-size:1.875rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{color:var(--text-secondary);line-height:1.6}*,:after,:before{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.loading-spinner{width:40px;height:40px;border:4px solid rgba(var(--accent-primary-rgb),.1);border-left-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes 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var(--transition-fast)}input:focus,select:focus,textarea:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-primary-light)}textarea{resize:vertical;min-height:120px}::selection{background:var(--accent-primary);color:white}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border-primary);border-radius:20px;border:3px solid var(--bg-primary)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.container{max-width:var(--max-content-width);margin:0 auto;padding:0 24px}.container-fluid{width:100%;max-width:100%;margin:0 auto;padding:0 40px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-md);font-weight:500;font-size:14px;transition:all var(--transition-fast);cursor:pointer;border:none;white-space:nowrap}.btn-primary{background:var(--gradient-primary);color:white;box-shadow:var(--shadow-sm)}.btn-primary:hover{box-shadow:var(--shadow-glow);transform:translateY(-1px)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-primary)}.btn-secondary:hover{background:var(--bg-card-hover);border-color:var(--border-secondary)}.btn-outline{background:transparent;color:var(--accent-primary);border:1px solid var(--accent-primary)}.btn-outline:hover{background:var(--accent-primary-light)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-tertiary);color:var(--text-primary)}.btn-danger{background:rgba(248,113,113,.15);color:var(--accent-danger);border:1px solid rgba(248,113,113,.3)}.btn-danger:hover{background:rgba(248,113,113,.25)}.btn-sm{padding:6px 12px;font-size:13px}.btn-lg{padding:14px 28px;font-size:16px}.btn-icon{width:36px;height:36px;padding:0;border-radius:var(--radius-sm)}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-full);font-size:12px;font-weight:500}.badge-primary{background:var(--accent-primary-light);color:var(--accent-primary)}.badge-success{background:var(--accent-success-light);color:var(--accent-success)}.badge-warning{background:rgba(251,191,36,.1);color:var(--accent-warning)}.badge-danger{background:rgba(248,113,113,.1);color:var(--accent-danger)}.badge-info{background:rgba(96,165,250,.1);color:var(--accent-info)}.card{background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-base)}.card:hover{border-color:var(--border-secondary);box-shadow:var(--shadow-md)}.card-body{padding:20px}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}@keyframes slideInRight{0%{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes glow{0%,to{box-shadow:0 0 5px rgba(124,58,237,.3)}50%{box-shadow:0 0 20px rgba(124,58,237,.6),0 0 40px rgba(37,99,235,.3),0 0 60px rgba(6,182,212,.15)}}@keyframes burn{0%,to{transform:scale(1);filter:drop-shadow(0 0 2px var(--accent-warning))}50%{transform:scale(1.1);filter:drop-shadow(0 0 8px var(--accent-warning))}}.icon-burn{animation:burn 2s ease-in-out infinite}.admin-sidebar-item svg,.btn svg,.hero-stat svg,.post-detail-meta svg,.search-icon svg,.section-title svg{display:inline-block;vertical-align:middle;flex-shrink:0}.animate-fade-in{animation:fadeIn .5s ease forwards}.animate-slide-left{animation:slideInLeft .5s ease forwards}.animate-slide-right{animation:slideInRight .5s ease forwards}.delay-1{animation-delay:.1s;opacity:0}.delay-2{animation-delay:.2s;opacity:0}.delay-3{animation-delay:.3s;opacity:0}.delay-4{animation-delay:.4s;opacity:0}.delay-5{animation-delay:.5s;opacity:0}.page-wrapper{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1 1;padding-top:var(--navbar-height)}.navbar{position:fixed;top:0;left:0;right:0;height:var(--navbar-height);background:var(--bg-navbar);border-bottom:1px solid var(--border-primary);justify-content:space-between;padding:0 24px;z-index:1000;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:var(--navbar-bg-transparent);transition:background .3s ease,border-color .3s ease}.navbar,.navbar-brand{display:flex;align-items:center}.navbar-brand{gap:10px;font-size:20px;font-weight:700;text-decoration:none}.navbar-brand,.navbar-brand:hover{color:var(--text-primary)}.navbar-brand .logo-icon{display:none}.navbar-logo-icon{display:flex;align-items:center;justify-content:center;transition:transform .25s cubic-bezier(.34,1.56,.64,1),box-shadow .25s ease}.navbar-brand:hover .navbar-logo-icon{transform:scale(1.1) translateY(-1px)}.navbar-brand .logo-icon-ring{stroke-dasharray:202;stroke-dashoffset:0;transition:filter .3s ease}.navbar-links{display:flex;align-items:center;gap:4px}.navbar-links a,.navbar-links button{padding:8px 16px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:14px;font-weight:500;transition:all var(--transition-fast);text-decoration:none}.navbar-links a:hover,.navbar-links button:hover{background:var(--bg-tertiary);color:var(--text-primary)}.navbar-links a.active{background:var(--accent-primary-light);color:var(--accent-primary)}.navbar-actions{display:flex;align-items:center;gap:12px}.navbar-search{position:relative}.navbar-search input{width:100%;padding:8px 14px 8px 36px;background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-full);color:var(--text-primary);font-size:13px}.navbar-search .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:14px}.hero{padding:80px 0 60px;background:var(--gradient-hero);border-bottom:1px solid var(--border-primary)}.hero-content{max-width:var(--max-content-width);margin:0 auto;padding:0 24px;text-align:center}.hero-title{font-size:48px;font-weight:800;line-height:1.15;margin-bottom:20px;color:var(--accent-primary)}.hero-subtitle{font-size:18px;color:var(--text-secondary);max-width:600px;margin:0 auto 32px;line-height:1.7}.hero-stats{display:flex;justify-content:center;gap:48px;margin-top:40px}.hero-stat{text-align:center}.hero-stat-number{font-size:28px;font-weight:700;color:var(--text-primary)}.hero-stat-label{font-size:14px;color:var(--text-muted);margin-top:4px}.home-brand-narrative{width:100%;max-width:40rem;margin:0 auto}.home-brand-narrative__viewport{position:relative;min-height:11.5rem;text-align:center}@media (min-width:640px){.home-brand-narrative__viewport{min-height:10.5rem}}.home-brand-narrative__slide{position:absolute;left:0;right:0;top:0;opacity:0;transform:translateX(.75rem);transition:opacity .5s ease,transform .5s ease;pointer-events:none}.home-brand-narrative__slide.is-active{opacity:1;transform:translateX(0);pointer-events:auto}.home-brand-narrative__title{font-size:clamp(1.75rem,4.5vw,2.75rem);font-weight:800;line-height:1.18;margin:0;color:var(--text-primary);letter-spacing:-.02em}.home-brand-narrative__lead{font-size:clamp(1rem,2.2vw,1.2rem);color:var(--text-secondary);line-height:1.65;max-width:36rem;margin:0 auto}.home-brand-narrative__dots{display:flex;gap:.5rem;justify-content:center;align-items:center;margin:1.75rem 0 0}.home-brand-narrative__dot{width:6px;height:6px;border-radius:50%;border:none;padding:0;background:var(--text-muted);opacity:.35;cursor:pointer;transition:opacity .2s ease,transform .2s ease,background .2s ease}.home-brand-narrative__dot:hover{opacity:.65}.home-brand-narrative__dot.is-active{opacity:1;background:var(--accent-primary);transform:scale(1.2)}.home-brand-narrative--static{text-align:center}.home-brand-narrative--static .home-brand-narrative__title{margin-bottom:1.1rem}.home-brand-strip{padding:2.75rem 1.25rem 3rem;border-bottom:1px solid var(--border-primary);background:var(--bg-primary);text-align:center}.home-brand-strip__text{max-width:32rem;margin:0 auto;font-size:.9375rem;line-height:1.65;color:var(--text-secondary)}.content-grid,.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));grid-gap:32px;gap:32px;justify-content:center;width:100%;max-width:1400px;margin:0 auto;padding:20px 0}.page-header{padding:60px 0 40px;background:var(--bg-secondary);border-bottom:1px solid var(--border-primary);margin-bottom:40px}.page-header-content{max-width:1400px;margin:0 auto;padding:0 20px}.page-title{font-size:3rem;font-weight:800;margin-bottom:12px;letter-spacing:-.03em;color:var(--text-primary)}.page-subtitle{color:var(--text-secondary);font-size:1.125rem;font-weight:500}.common-card,.post-card{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-base);height:100%;text-decoration:none;color:inherit;cursor:pointer}.common-card:hover,.post-card:hover{transform:translateY(-5px);border-color:var(--accent-primary);box-shadow:var(--shadow-lg),0 10px 40px rgba(124,58,237,.1);background:var(--bg-card-hover)}.common-card-thumbnail,.post-card-thumbnail{width:100%;aspect-ratio:16/9;overflow:hidden;position:relative;background:var(--bg-tertiary)}.common-card-thumbnail img,.post-card-thumbnail img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.common-card:hover .common-card-thumbnail img,.post-card:hover .post-card-thumbnail img{transform:scale(1.05)}.common-card-body,.post-card-body{padding:1.25rem;display:flex;flex-direction:column;flex:1 1}.common-card-category,.post-card-category{font-size:.75rem;font-weight:700;color:var(--accent-primary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.common-card-title,.post-card-title{font-size:1.125rem;font-weight:700;line-height:1.4;margin-bottom:.75rem;color:var(--text-primary);min-height:3.125rem}.common-card-excerpt,.common-card-title,.post-card-excerpt,.post-card-title{display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.common-card-excerpt,.post-card-excerpt{font-size:.875rem;color:var(--text-secondary);line-height:1.6;margin-bottom:1.25rem}.common-card-meta,.post-card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:1rem;border-top:1px solid var(--border-secondary);font-size:.75rem;color:var(--text-muted)}.common-card-meta .meta-item,.post-card-meta .meta-item{display:flex;align-items:center;gap:.5rem}.common-card-meta .meta-item svg,.post-card-meta .meta-item svg{color:var(--accent-primary);opacity:.8}.common-card-badge,.post-card-badge{position:absolute;top:12px;right:12px;background:var(--accent-warning);color:#000;font-size:10px;font-weight:800;padding:4px 8px;border-radius:4px;z-index:2;box-shadow:0 2px 4px rgba(0,0,0,.2)}.common-card-difficulty,.post-card-difficulty{position:absolute;bottom:12px;left:12px;background:rgba(0,0,0,.6);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:#fff;font-size:10px;font-weight:600;padding:4px 10px;border-radius:20px;z-index:2;border:1px solid rgba(255,255,255,.1)}.common-card-difficulty[data-difficulty=Beginner],.post-card-difficulty[data-difficulty=Beginner]{border-color:#22c55e;color:#4ade80}.common-card-difficulty[data-difficulty=Intermediate],.post-card-difficulty[data-difficulty=Intermediate]{border-color:#f59e0b;color:#fbbf24}.common-card-difficulty[data-difficulty=Advanced],.post-card-difficulty[data-difficulty=Advanced]{border-color:#ef4444;color:#f87171}.post-card-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.post-card-tag{padding:2px 10px;border-radius:var(--radius-full);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;background:var(--accent-primary-light);color:var(--accent-primary)}.section{padding:60px 0}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}.section-title{font-size:28px;font-weight:700;color:var(--text-primary)}.section-subtitle{font-size:14px;color:var(--text-muted);margin-top:4px}.section-divider{height:1px;background:var(--border-primary);margin:0 0 60px}.post-detail{max-width:100%;margin:0 auto;padding:40px 40px 80px}.post-detail-header{margin-bottom:32px}.post-detail-tags{display:flex;gap:8px;margin-bottom:16px}.post-detail-title{font-size:36px;font-weight:700;line-height:1.3;margin-bottom:16px}.post-detail-meta{display:flex;align-items:center;gap:16px;font-size:14px;color:var(--text-muted);margin-bottom:24px}.post-detail-cover{width:100%;border-radius:var(--radius-lg);margin-bottom:32px;border:1px solid var(--border-primary)}.markdown-content{font-size:1.125rem;line-height:1.75;color:var(--text-secondary);word-wrap:break-word}.markdown-content h1{font-size:2.25rem;margin-top:3rem;margin-bottom:1.5rem}.markdown-content h1,.markdown-content h2{padding-bottom:.5rem;border-bottom:1px solid var(--border-primary)}.markdown-content h2{font-size:1.875rem;margin-top:2.5rem;margin-bottom:1.25rem}.markdown-content h3{font-size:1.5rem;margin-top:2rem;margin-bottom:1rem}.markdown-content p{margin-bottom:1.5rem}.markdown-content strong{color:var(--text-primary);font-weight:700}.markdown-content code{background:var(--bg-tertiary);color:var(--accent-primary);border:1px solid var(--border-primary);padding:.2em .4em;border-radius:6px;font-size:.9em;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace}.markdown-content pre{background:#0d1117;border:1px solid var(--border-primary);border-radius:12px;padding:24px;margin:2rem 0;overflow-x:auto;box-shadow:var(--shadow-md)}.markdown-content pre code{background:none!important;border:none!important;padding:0!important;font-size:.875rem;line-height:1.7;color:#e6edf3}.markdown-content ol,.markdown-content ul{margin:1.5rem 0;padding-left:1.5rem}.markdown-content 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