:root{--bg-primary: #000000;--bg-secondary: #0a0a0a;--bg-tertiary: #141414;--bg-card: #181818;--accent: #ff176b;--accent-dim: rgba(255, 23, 107, .6);--accent-soft: #d6125b;--accent-bg: rgba(255, 23, 107, .12);--text-primary: #FFFFFF;--text-secondary: #CCCCCC;--text-muted: #888888;--shadow-white: rgba(255, 255, 255, .15);--shadow-white-strong: rgba(255, 255, 255, .3);--glow: 0 0 20px rgba(255, 23, 107, .4);--border: #2a2a2a;--border-soft: #1f1f1f;--border-hover: var(--accent);--card-radius: 20px;--btn-radius: 12px;--input-radius: 10px;--transition: all .3s cubic-bezier(.4, 0, .2, 1);--success: #10b981;--danger: #ef4444;--warning: #f59e0b}*{box-sizing:border-box}html,body{margin:0;padding:0}body.ph-body{background:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}body.ph-body .ph-main{flex:1;padding-top:72px}a{color:var(--accent);text-decoration:none;transition:var(--transition)}a:hover{color:var(--text-primary);text-shadow:var(--glow)}h1,h2,h3,h4,h5,h6,p{margin:0}ul,ol{list-style:none;padding:0;margin:0}.ph-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:#000000eb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}.ph-logo{font-size:22px;font-weight:800;background:linear-gradient(135deg,var(--text-primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap}.ph-logo .dot{color:var(--accent);-webkit-text-fill-color:var(--accent)}.ph-nav ul{display:flex;gap:32px}.ph-nav a{color:var(--text-secondary);font-weight:500;position:relative;padding:4px 0}.ph-nav a:hover{color:var(--text-primary);text-shadow:none}.ph-nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--accent);transition:var(--transition);box-shadow:var(--glow)}.ph-nav a:hover:after{width:100%}.ph-nav a.active{color:var(--text-primary)}.ph-nav a.active:after{width:100%}.ph-auth-buttons{display:flex;gap:12px;align-items:center}.ph-auth-buttons form{margin:0}.ph-greeting{color:var(--text-secondary);font-size:14px;margin-right:4px;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ph-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--btn-radius);font-weight:600;cursor:pointer;transition:var(--transition);border:none;font-size:14px;font-family:inherit;text-decoration:none;text-align:center;line-height:1}.ph-btn:disabled,.ph-btn[aria-disabled=true]{opacity:.5;cursor:not-allowed;pointer-events:none}.ph-btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-soft));color:#fff;font-weight:700}.ph-btn-primary:hover{transform:translateY(-2px);box-shadow:var(--glow),0 8px 25px #ff176b4d;color:#fff;text-shadow:none}.ph-btn-outline{background:transparent;border:2px solid var(--accent);color:var(--text-primary)}.ph-btn-outline:hover{background:var(--accent);color:#fff;box-shadow:var(--glow);text-shadow:none}.ph-btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.ph-btn-ghost:hover{background:var(--bg-secondary);color:var(--text-primary);text-shadow:none}.ph-btn-lg{padding:16px 32px;font-size:16px}.ph-btn-sm{padding:8px 16px;font-size:13px}.ph-btn-block{width:100%}.ph-hero{padding:100px 24px;text-align:center;max-width:900px;margin:0 auto;position:relative}.ph-hero:before{content:"";position:absolute;top:-50%;left:50%;transform:translate(-50%);width:600px;height:600px;background:radial-gradient(circle,var(--accent-dim) 0%,transparent 70%);filter:blur(80px);z-index:-1;animation:ph-pulse 4s ease-in-out infinite}@keyframes ph-pulse{0%,to{opacity:.3;transform:translate(-50%) scale(1)}50%{opacity:.5;transform:translate(-50%) scale(1.05)}}.ph-hero h1{font-size:clamp(32px,6vw,56px);font-weight:800;margin-bottom:24px;line-height:1.1;text-shadow:0 0 30px var(--shadow-white-strong)}.ph-hero h1 span{background:linear-gradient(135deg,var(--accent),#fff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.ph-hero p{font-size:20px;color:var(--text-secondary);margin:0 auto 40px;max-width:600px}.ph-hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.ph-hero-stats{display:flex;justify-content:center;gap:48px;margin-top:60px;padding-top:40px;border-top:1px solid var(--border);flex-wrap:wrap}.ph-stat-value{font-size:32px;font-weight:800;color:var(--accent);text-shadow:var(--glow)}.ph-stat-label{color:var(--text-muted);font-size:14px;margin-top:4px}.ph-section{padding:60px 24px;max-width:1400px;margin:0 auto}.ph-section-title-wrap{text-align:center;margin-bottom:48px}.ph-section-title{font-size:36px;font-weight:700;position:relative;display:inline-block}.ph-section-title:after{content:"";position:absolute;bottom:-12px;left:50%;transform:translate(-50%);width:60px;height:4px;background:var(--accent);border-radius:2px;box-shadow:var(--glow)}.ph-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--card-radius);padding:28px;transition:var(--transition);position:relative}.ph-card-hover:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 12px 28px var(--shadow-white),var(--glow)}.ph-card-tertiary{background:var(--bg-tertiary)}.ph-card-flat{padding:20px}.ph-courses-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}.ph-course-card{display:flex;flex-direction:column;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--card-radius);padding:28px;transition:var(--transition);position:relative;overflow:hidden;text-decoration:none;color:inherit}.ph-course-card:hover{color:inherit;text-shadow:none}.ph-course-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),transparent);opacity:0;transition:var(--transition)}.ph-course-card:hover{border-color:var(--accent);transform:translateY(-6px);box-shadow:0 20px 40px var(--shadow-white),var(--glow)}.ph-course-card:hover:before{opacity:1}.ph-tag{display:inline-block;padding:6px 14px;background:var(--accent-bg);border:1px solid var(--accent);border-radius:20px;font-size:12px;font-weight:600;color:var(--accent);width:-moz-max-content;width:max-content}.ph-tag-muted{background:var(--bg-secondary);border-color:var(--border);color:var(--text-muted)}.ph-tag-success{background:#10b98126;border-color:var(--success);color:var(--success)}.ph-tag-danger{background:#ef444426;border-color:var(--danger);color:var(--danger)}.ph-tag-warning{background:#f59e0b26;border-color:var(--warning);color:var(--warning)}.ph-course-card h3{font-size:22px;margin-bottom:12px;font-weight:700}.ph-course-card .ph-course-desc{color:var(--text-secondary);font-size:15px;margin:12px 0 20px;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.ph-course-meta{display:flex;gap:16px;color:var(--text-muted);font-size:14px;margin-bottom:20px;flex-wrap:wrap}.ph-courses-empty{grid-column:1 / -1;text-align:center;padding:60px 24px;color:var(--text-muted)}.ph-filters{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}.ph-chip{padding:8px 18px;border-radius:24px;font-size:13px;font-weight:600;color:var(--text-secondary);background:var(--bg-secondary);border:1px solid var(--border);cursor:pointer;transition:var(--transition);text-decoration:none}.ph-chip:hover{border-color:var(--accent);color:var(--text-primary);text-shadow:none}.ph-chip.active{background:linear-gradient(135deg,var(--accent),var(--accent-soft));color:#fff;border-color:var(--accent);box-shadow:var(--glow)}.ph-features{background:var(--bg-secondary);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.ph-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:32px}.ph-feature-item{text-align:center;padding:24px}.ph-feature-icon{width:72px;height:72px;margin:0 auto 20px;background:linear-gradient(135deg,var(--accent),var(--accent-soft));border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:800;color:#fff;box-shadow:var(--glow);position:relative}.ph-feature-icon:after{content:"";position:absolute;top:-2px;right:-2px;bottom:-2px;left:-2px;border-radius:22px;background:linear-gradient(135deg,var(--accent),transparent,var(--accent));z-index:-1;animation:ph-rotate 3s linear infinite;opacity:.6}@keyframes ph-rotate{to{transform:rotate(360deg)}}.ph-feature-item h4{font-size:20px;margin-bottom:12px;font-weight:700}.ph-feature-item p{color:var(--text-secondary);font-size:15px}.ph-testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}.ph-testimonial-card{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--card-radius);padding:28px;transition:var(--transition)}.ph-testimonial-card:hover{border-color:var(--accent);box-shadow:0 10px 30px var(--shadow-white)}.ph-testimonial-header{display:flex;align-items:center;gap:16px;margin-bottom:20px}.ph-avatar{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--bg-primary));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;border:2px solid var(--accent);box-shadow:var(--glow);flex-shrink:0}.ph-testimonial-author h4{font-weight:600;margin-bottom:2px}.ph-testimonial-author p{color:var(--text-muted);font-size:14px}.ph-testimonial-text{color:var(--text-secondary);font-style:italic;position:relative;padding-left:20px}.ph-testimonial-text:before{content:'"';position:absolute;left:0;top:-8px;font-size:40px;color:var(--accent);opacity:.5;font-family:Georgia,serif}.ph-cta-section{text-align:center;padding:80px 24px;background:linear-gradient(180deg,var(--bg-primary),var(--bg-secondary));position:relative;overflow:hidden}.ph-cta-section:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at center,var(--accent-dim) 0%,transparent 60%);opacity:.2;pointer-events:none}.ph-cta-section h2{font-size:clamp(28px,4vw,42px);font-weight:800;margin-bottom:24px;position:relative;z-index:1}.ph-cta-section p{color:var(--text-secondary);font-size:18px;max-width:600px;margin:0 auto 40px;position:relative;z-index:1}.ph-cta-section .ph-btn{position:relative;z-index:1}.ph-footer{background:var(--bg-secondary);border-top:1px solid var(--border);padding:60px 24px 30px}.ph-footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;max-width:1400px;margin:0 auto}.ph-footer-col h4{font-size:16px;font-weight:700;margin-bottom:20px;color:var(--text-primary)}.ph-footer-col ul{display:flex;flex-direction:column;gap:12px}.ph-footer-col a{color:var(--text-muted);font-size:14px}.ph-footer-col a:hover{color:var(--accent);padding-left:4px;text-shadow:none}.ph-footer-bottom{text-align:center;padding-top:40px;margin-top:40px;border-top:1px solid var(--border);color:var(--text-muted);font-size:14px}.ph-form{display:flex;flex-direction:column;gap:20px}.ph-field{display:flex;flex-direction:column;gap:8px}.ph-label{font-size:14px;font-weight:600;color:var(--text-secondary)}.ph-input,.ph-textarea{width:100%;padding:14px 18px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--input-radius);color:var(--text-primary);font-size:15px;font-family:inherit;transition:var(--transition);outline:none}.ph-input:focus,.ph-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}.ph-input::-moz-placeholder{color:var(--text-muted)}.ph-input::placeholder{color:var(--text-muted)}.ph-checkbox{display:inline-flex;align-items:center;gap:10px;cursor:pointer;color:var(--text-secondary);font-size:14px}.ph-checkbox input{accent-color:var(--accent);width:18px;height:18px}.ph-error{color:var(--danger);font-size:13px;margin-top:4px}.ph-success-msg{background:#10b9811f;border:1px solid var(--success);color:var(--success);padding:12px 16px;border-radius:var(--input-radius);font-size:14px}.ph-info-msg{background:var(--accent-bg);border:1px solid var(--accent);color:var(--accent);padding:12px 16px;border-radius:var(--input-radius);font-size:14px}.ph-auth-shell{min-height:calc(100vh - 72px);display:flex;align-items:center;justify-content:center;padding:40px 24px;position:relative;overflow:hidden}.ph-auth-shell:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:700px;height:700px;background:radial-gradient(circle,var(--accent-dim) 0%,transparent 70%);filter:blur(100px);z-index:-1;opacity:.35}.ph-auth-card{width:100%;max-width:440px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--card-radius);padding:40px;position:relative;z-index:1}.ph-auth-card h1{font-size:28px;font-weight:800;text-align:center;margin-bottom:12px}.ph-auth-card .ph-auth-sub{text-align:center;color:var(--text-muted);margin-bottom:28px;font-size:14px}.ph-tabs{display:flex;gap:8px;border-bottom:1px solid var(--border);margin-bottom:32px;flex-wrap:wrap}.ph-tab{padding:12px 20px;color:var(--text-muted);text-decoration:none;font-weight:600;font-size:14px;border-bottom:2px solid transparent;transition:var(--transition);margin-bottom:-1px}.ph-tab:hover{color:var(--text-primary);text-shadow:none}.ph-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.ph-table{width:100%;border-collapse:collapse;background:var(--bg-secondary);border-radius:var(--card-radius);overflow:hidden;border:1px solid var(--border)}.ph-table th,.ph-table td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--border);font-size:14px}.ph-table th{background:var(--bg-tertiary);color:var(--text-muted);font-weight:600;text-transform:uppercase;font-size:12px;letter-spacing:.5px}.ph-table tr:last-child td{border-bottom:none}.ph-table tr:hover td{background:#ffffff05}.ph-prose{color:var(--text-secondary);line-height:1.75;font-size:16px}.ph-prose h1,.ph-prose h2,.ph-prose h3,.ph-prose h4{color:var(--text-primary);margin-top:1.5em;margin-bottom:.6em;font-weight:700}.ph-prose h2{font-size:28px}.ph-prose h3{font-size:22px}.ph-prose h4{font-size:18px}.ph-prose p{margin:1em 0}.ph-prose ul,.ph-prose ol{padding-left:1.4em;margin:1em 0;list-style:revert}.ph-prose li{margin:.4em 0}.ph-prose strong{color:var(--text-primary);font-weight:700}.ph-prose a{color:var(--accent)}.ph-prose code{background:var(--bg-secondary);padding:2px 6px;border-radius:4px;font-family:Fira Code,Consolas,monospace;font-size:.9em;color:var(--accent)}.ph-prose pre{background:var(--bg-secondary);padding:16px;border-radius:10px;overflow-x:auto;border:1px solid var(--border)}.ph-prose pre code{background:none;padding:0;color:var(--text-primary)}.ph-prose blockquote{border-left:3px solid var(--accent);padding-left:16px;color:var(--text-muted);font-style:italic;margin:1em 0}.ph-prose img{max-width:100%;border-radius:12px;margin:1em 0}.ph-progress{width:100%;height:8px;background:var(--bg-secondary);border-radius:100px;overflow:hidden}.ph-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-soft));transition:width .5s ease;box-shadow:var(--glow)}.ph-breadcrumbs{display:flex;gap:8px;color:var(--text-muted);font-size:13px;margin-bottom:24px;flex-wrap:wrap}.ph-breadcrumbs a{color:var(--text-muted)}.ph-breadcrumbs a:hover{color:var(--accent);text-shadow:none}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent);box-shadow:var(--glow)}.ph-container{max-width:1200px;margin:0 auto;padding:0 24px}.ph-container-sm{max-width:800px;margin:0 auto;padding:0 24px}.ph-container-xs{max-width:560px;margin:0 auto;padding:0 24px}.ph-text-accent{color:var(--accent)}.ph-text-muted{color:var(--text-muted)}.ph-text-success{color:var(--success)}.ph-text-danger{color:var(--danger)}.ph-text-center{text-align:center}.ph-mb-1{margin-bottom:8px}.ph-mb-2{margin-bottom:16px}.ph-mb-3{margin-bottom:24px}.ph-mb-4{margin-bottom:32px}.ph-stack{display:flex;flex-direction:column;gap:16px}.ph-row{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.ph-row-between{justify-content:space-between}.ph-divider{height:1px;background:var(--border);margin:24px 0}@media (max-width: 768px){.ph-header{flex-wrap:wrap;padding:12px 16px;gap:12px}.ph-nav{order:3;width:100%}.ph-nav ul{gap:18px;font-size:14px;justify-content:center;flex-wrap:wrap}body.ph-body .ph-main{padding-top:120px}.ph-hero{padding-top:60px}.ph-hero-stats{gap:24px;flex-direction:column}.ph-section-title{font-size:26px}.ph-section{padding:40px 16px}.ph-courses-grid,.ph-features-grid,.ph-testimonials-grid{grid-template-columns:1fr}.ph-greeting{display:none}}