*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--transition: all .3s cubic-bezier(.4, 0, .2, 1)}:root,[data-theme=dark]{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-card: #181825;--bg-card-hover: #1e1e30;--text-primary: #e4e4ef;--text-secondary: #9d9db5;--text-muted: #6b6b80;--accent: #7c5cfc;--accent-light: #a78bfa;--accent-glow: rgba(124, 92, 252, .15);--border: #2a2a3d;--border-hover: #3d3d5c;--gradient-1: linear-gradient(135deg, #7c5cfc 0%, #5c8cfc 100%);--gradient-2: linear-gradient(135deg, #fc5c7c 0%, #fc7c5c 100%);--shadow: 0 4px 20px rgba(0, 0, 0, .3);--shadow-glow: 0 0 30px rgba(124, 92, 252, .1);--globe-bg: radial-gradient(circle at 35% 35%, rgba(92, 140, 252, .15), rgba(124, 92, 252, .08) 50%, transparent 70%);--globe-line: rgba(124, 92, 252, .25);--globe-line-3d: rgba(124, 92, 252, .18);--globe-shadow: 0 0 60px rgba(124, 92, 252, .12), inset 0 0 60px rgba(124, 92, 252, .04);--globe-shadow-pulse: 0 0 100px rgba(124, 92, 252, .2), inset 0 0 80px rgba(124, 92, 252, .08)}[data-theme=light]{--bg-primary: #fdf6ee;--bg-secondary: #f5ede3;--bg-card: #fffcf7;--bg-card-hover: #fff7ed;--text-primary: #2d2416;--text-secondary: #7a6b58;--text-muted: #b09b84;--accent: #f97316;--accent-light: #fb923c;--accent-glow: rgba(249, 115, 22, .12);--border: #e8dccc;--border-hover: #d4c4b0;--gradient-1: linear-gradient(135deg, #f97316 0%, #fb923c 100%);--gradient-2: linear-gradient(135deg, #ea580c 0%, #f97316 100%);--shadow: 0 4px 20px rgba(0, 0, 0, .08);--shadow-glow: 0 0 30px rgba(249, 115, 22, .08);--globe-bg: radial-gradient(circle at 35% 35%, rgba(249, 115, 22, .12), rgba(251, 146, 60, .06) 50%, transparent 70%);--globe-line: rgba(249, 115, 22, .25);--globe-line-3d: rgba(249, 115, 22, .18);--globe-shadow: 0 0 60px rgba(249, 115, 22, .1), inset 0 0 60px rgba(249, 115, 22, .03);--globe-shadow-pulse: 0 0 100px rgba(249, 115, 22, .15), inset 0 0 80px rgba(249, 115, 22, .05)}html{scroll-behavior:smooth;scroll-padding-top:80px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}.container{max-width:1100px;margin:0 auto;padding:0 24px}a{color:var(--accent-light);text-decoration:none;transition:var(--transition)}a:hover{color:#c4b5fd}.nav-right{display:flex;align-items:center;gap:12px}.theme-switch{position:relative;width:52px;height:26px;background:radial-gradient(circle at 18% 7px,#fff,#fff 2px,transparent 2.5px,transparent),radial-gradient(circle at 35% 12px,#fff,#fff .5px,transparent 1px,transparent),radial-gradient(circle at 10% 20px,#fff,#fff 1px,transparent 1.5px,transparent),radial-gradient(circle at 25% 5px,#fff,#fff 1.2px,transparent 1.7px,transparent),radial-gradient(circle at 15% 16px,#fff,#fff .8px,transparent 1.3px,transparent),radial-gradient(circle at 30% 22px,#fff,#fff 2px,transparent 2.5px,transparent),radial-gradient(circle at 5% 10px,#fff,#fff .3px,transparent .8px,transparent),linear-gradient(90deg,#2b303e,#2b303e 50%,#5a81b4 50%,#5a81b4);background-repeat:no-repeat;background-size:200% 100%;background-position:100% 0;border-radius:26px;box-shadow:0 -1px 2px #0000004d,inset 0 1px 2px #0000004d,0 1px 2px #ffffff1a,inset 0 -1px 2px #ffffff1a;cursor:pointer;overflow:hidden;transition:.5s all;flex-shrink:0}.theme-switch:before,.theme-switch:after{content:"";position:absolute;transition:.5s all}.theme-switch:before{width:20px;height:20px;border-radius:50%;background:#e9cb50;top:3px;right:3px;bottom:3px;left:3px;box-shadow:0 0 2px #0000004d,inset 1px 1px 2px #f8f4e4,inset -1px -1px 2px #665613;z-index:1}.theme-switch:after{width:22px;height:22px;top:2px;right:2px;bottom:2px;left:2px;border-radius:50%;box-shadow:3px 18px 0 3px #fff,18px 18px 0 2px #fff,28px 20px 0 3px #fff,38px 13px 0 2px #fff,50px 10px 0 3px #fff,56px -2px 0 3px #fff,3px 12px 0 3px #abc1d9,20px 12px 0 3px #abc1d9,28px 14px 0 3px #abc1d9,38px 6px 0 3px #abc1d9,44px 5px 0 3px #abc1d9,56px -6px 0 3px #abc1d9}.theme-switch:hover:before{filter:contrast(90%) brightness(110%);scale:1.05}[data-theme=light] .theme-switch{background-position:100% 0}[data-theme=light] .theme-switch:before{translate:0;background:#e9cb50;box-shadow:0 0 2px #0000004d,inset 1px 1px 2px #f8f4e4,inset -1px -1px 2px #665613}[data-theme=light] .theme-switch:after{transform:translate(0);box-shadow:3px 18px 0 3px #fff,18px 18px 0 2px #fff,28px 20px 0 3px #fff,38px 13px 0 2px #fff,50px 10px 0 3px #fff,56px -2px 0 3px #fff,-2px 0 0 13px #fff3,5px 0 0 13px #ffffff26,12px 0 0 13px #ffffff36,3px 12px 0 3px #abc1d9,20px 12px 0 3px #abc1d9,28px 14px 0 3px #abc1d9,38px 6px 0 3px #abc1d9,44px 5px 0 3px #abc1d9,56px -6px 0 3px #abc1d9}[data-theme=dark] .theme-switch{background-position:0 0}[data-theme=dark] .theme-switch:before{translate:26px;background:radial-gradient(circle at 50% 6px,#939aa5,#939aa5 2px,transparent 2.5px,transparent),radial-gradient(circle at 35% 14px,#939aa5,#939aa5 3px,transparent 3.5px,transparent),radial-gradient(circle at 72% 15px,#939aa5,#939aa5 2.5px,transparent 3px,transparent),radial-gradient(#cbcdda,#cbcdda)}[data-theme=dark] .theme-switch:after{transform:translate(26px);box-shadow:3px 18px 0 3px transparent,18px 18px 0 2px transparent,28px 20px 0 3px transparent,38px 13px 0 2px transparent,50px 10px 0 3px transparent,56px -2px 0 3px transparent,2px 0 0 13px #fff3,-5px 0 0 13px #ffffff26,-12px 0 0 13px #ffffff36,3px 12px 0 3px transparent,20px 12px 0 3px transparent,28px 14px 0 3px transparent,38px 6px 0 3px transparent,44px 5px 0 3px transparent,56px -6px 0 3px transparent}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:color-mix(in srgb,var(--bg-primary) 85%,transparent);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}.nav-content{max-width:1100px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}.nav-logo{font-size:1.5rem;font-weight:700;background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.5px}.lang-switcher{display:flex;gap:4px;background:var(--bg-secondary);padding:4px;border-radius:var(--radius-sm);border:1px solid var(--border)}.nav-link{color:var(--text-muted);font-size:.85rem;font-weight:500;padding:6px 10px;border-radius:6px;transition:var(--transition);text-decoration:none}.nav-link:hover{color:var(--accent-light);background:#ffffff0d}.lang-btn{background:transparent;border:none;color:var(--text-muted);padding:6px 12px;border-radius:6px;cursor:pointer;font-size:.8rem;font-weight:500;font-family:Inter,sans-serif;transition:var(--transition)}.lang-btn:hover{color:var(--text-secondary);background:#ffffff0d}.lang-btn.active{background:var(--accent);color:#fff;box-shadow:0 0 12px var(--accent-glow)}.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding:120px 0 80px}.hero-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at 20% 50%,var(--accent-glow) 0%,transparent 50%),radial-gradient(ellipse at 80% 50%,var(--accent-glow) 0%,transparent 50%);pointer-events:none}.hero-content{display:flex;align-items:center;gap:60px;position:relative;z-index:1}.hero-text{flex:1}.hero-greeting{font-size:1.1rem;color:var(--accent-light);font-weight:500;margin-bottom:8px}.hero-name{font-size:3.5rem;font-weight:700;line-height:1.1;margin-bottom:16px;letter-spacing:-1px}.name-en{color:var(--text-primary)}.name-cn{color:var(--accent-light);font-weight:400;font-size:2.5rem;display:block;margin-top:4px}.name-fr{color:var(--text-secondary);font-weight:400;font-size:2rem;display:block;margin-top:2px}.hero-subtitle{font-size:1.3rem;color:var(--text-secondary);font-weight:500;margin-bottom:12px}.hero-desc{font-size:1.05rem;color:var(--text-muted);max-width:500px;margin-bottom:32px;line-height:1.7}.hero-actions{display:flex;gap:12px;margin-bottom:28px}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--radius-sm);font-size:.95rem;font-weight:500;font-family:Inter,sans-serif;cursor:pointer;transition:var(--transition);border:none}.btn-primary{background:var(--gradient-1);color:#fff;box-shadow:0 0 20px var(--accent-glow)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px var(--accent-glow);color:#fff}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border)}.btn-outline:hover{border-color:var(--accent);color:var(--accent-light);transform:translateY(-2px)}.hero-socials{display:flex;gap:12px}.social-link{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--bg-card);color:var(--text-secondary);border:1px solid var(--border);transition:var(--transition)}.social-link:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-3px);box-shadow:0 0 20px var(--accent-glow)}.hero-visual{flex-shrink:0}.globe{width:300px;height:300px;border-radius:50%;position:relative;background:var(--globe-bg);box-shadow:var(--globe-shadow);animation:globePulse 4s ease-in-out infinite;overflow:hidden}.globe-earth{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border-radius:50%;object-fit:cover;pointer-events:none;z-index:0;opacity:.35}.globe:before{z-index:1;content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;background:repeating-linear-gradient(0deg,transparent,transparent 28px,var(--globe-line) 28px,var(--globe-line) 29px),repeating-linear-gradient(90deg,transparent,transparent 28px,var(--globe-line) 28px,var(--globe-line) 29px);pointer-events:none}.globe:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;background:radial-gradient(ellipse at 50% 50%,transparent 58%,var(--globe-line-3d) 58%,var(--globe-line-3d) 60%,transparent 60%),radial-gradient(ellipse at 50% 50%,transparent 63%,var(--globe-line-3d) 63%,var(--globe-line-3d) 65%,transparent 65%);pointer-events:none;z-index:2}.greeting-float{position:absolute;font-size:1rem;font-weight:600;text-shadow:0 0 12px currentColor;pointer-events:none;opacity:0;animation:wordFloat 4s ease-out forwards;white-space:nowrap;z-index:3}@keyframes globePulse{0%,to{box-shadow:var(--globe-shadow)}50%{box-shadow:var(--globe-shadow-pulse)}}@keyframes wordFloat{0%{opacity:0;transform:translateY(0) scale(.5)}15%{opacity:1;transform:translateY(-10px) scale(1)}75%{opacity:1;transform:translateY(-20px) scale(1)}to{opacity:0;transform:translateY(-40px) scale(.6)}}.greeting-float:nth-child(odd){animation-duration:5s}.greeting-float:nth-child(3n){animation-duration:3.5s}.greeting-float:nth-child(5n+2){animation-duration:4.5s}.scroll-indicator{position:absolute;bottom:40px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:.85rem;animation:bounce 2s infinite}@keyframes bounce{0%,to{transform:translate(-50%) translateY(0)}50%{transform:translate(-50%) translateY(8px)}}.section{padding:100px 0}.section-alt{background:var(--bg-secondary)}.section-title{font-size:2rem;font-weight:700;text-align:center;margin-bottom:48px;position:relative}.section-title:after{content:"";display:block;width:60px;height:4px;background:var(--gradient-1);border-radius:2px;margin:12px auto 0}.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.about-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:28px;transition:var(--transition)}.about-card:hover{border-color:var(--border-hover);transform:translateY(-4px);box-shadow:var(--shadow);background:var(--bg-card-hover)}.about-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--accent-glow);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--accent-light)}.about-card h3{font-size:1.1rem;margin-bottom:8px}.about-card p{color:var(--text-secondary);font-size:.95rem}.lang-list{list-style:none}.lang-list li{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px solid var(--border)}.lang-list li:last-child{border-bottom:none}.lang-name{color:var(--text-primary);font-size:.9rem}.lang-level{color:var(--accent-light);font-size:.85rem;font-weight:500;background:var(--accent-glow);padding:2px 10px;border-radius:20px}.timeline{position:relative;max-width:700px;margin:0 auto}.timeline:before{content:"";position:absolute;left:20px;top:0;bottom:0;width:2px;background:var(--border)}.timeline-item{position:relative;padding-left:56px;padding-bottom:40px}.timeline-item:last-child{padding-bottom:0}.timeline-dot{position:absolute;left:12px;top:6px;width:18px;height:18px;border-radius:50%;background:var(--accent);border:4px solid var(--bg-primary);box-shadow:0 0 0 2px var(--accent)}.section-alt .timeline-dot{border-color:var(--bg-secondary)}.timeline-content{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:24px;transition:var(--transition)}.timeline-content:hover{border-color:var(--border-hover);transform:translate(4px)}.timeline-date{font-size:.85rem;color:var(--accent-light);font-weight:500;margin-bottom:8px;font-family:JetBrains Mono,monospace}.timeline-title{font-size:1.15rem;margin-bottom:4px}.timeline-institution{color:var(--text-secondary);font-size:.9rem;margin-bottom:4px}.timeline-desc{color:var(--text-muted);font-size:.85rem}.projects-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.project-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:28px;transition:var(--transition);display:flex;flex-direction:column}.project-card:hover{border-color:var(--border-hover);transform:translateY(-4px);box-shadow:var(--shadow);background:var(--bg-card-hover)}.project-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:16px}.project-icon{width:52px;height:52px;border-radius:var(--radius-sm);background:var(--accent-glow);display:flex;align-items:center;justify-content:center;color:var(--accent-light)}.project-links a{color:var(--text-muted);transition:var(--transition)}.project-links a:hover{color:var(--accent-light)}.project-title{font-size:1.2rem;margin-bottom:8px}.project-badge{display:inline-block;font-size:.8rem;color:#fbbf24;background:#fbbf241a;padding:4px 12px;border-radius:20px;margin-bottom:8px;font-weight:500}.project-desc{color:var(--text-secondary);font-size:.9rem;line-height:1.7;flex:1;margin-bottom:16px}.project-tags{display:flex;flex-wrap:wrap;gap:8px}.project-tags span{font-size:.8rem;color:var(--text-muted);background:#ffffff08;padding:4px 12px;border-radius:20px;border:1px solid var(--border)}.contact-content{text-align:center;max-width:600px;margin:0 auto}.contact-text{color:var(--text-secondary);font-size:1.05rem;margin-bottom:36px;line-height:1.7}.contact-links{display:flex;flex-direction:column;gap:12px;align-items:center}.contact-link{display:inline-flex;align-items:center;gap:10px;color:var(--text-secondary);font-size:1rem;padding:14px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);min-width:320px;justify-content:center;transition:var(--transition)}.contact-link:hover{border-color:var(--accent);color:var(--accent-light);transform:translateY(-2px);box-shadow:var(--shadow-glow)}.footer{padding:32px 0;border-top:1px solid var(--border);text-align:center;color:var(--text-muted);font-size:.85rem}@media (max-width: 900px){.hero-content{flex-direction:column-reverse;text-align:center;gap:32px}.hero-desc{max-width:100%;margin-left:auto;margin-right:auto}.hero-actions,.hero-socials{justify-content:center}.hero-name{font-size:2.8rem}.name-cn{font-size:2rem}.name-fr{font-size:1.6rem}.globe{width:200px;height:200px}.about-grid,.projects-grid{grid-template-columns:1fr}.contact-link{min-width:auto;width:100%}}@media (max-width: 600px){.hero-name{font-size:2.2rem}.name-cn{font-size:1.6rem}.name-fr{font-size:1.3rem}.section{padding:60px 0}.section-title{font-size:1.6rem;margin-bottom:32px}.hero-actions{flex-direction:column;align-items:center}.btn{width:100%;justify-content:center}.globe{width:160px;height:160px}.nav-content{padding:12px 16px}.lang-btn{padding:4px 8px;font-size:.75rem}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.hero-text>*{animation:fadeInUp .6s ease-out forwards;opacity:0}.hero-greeting{animation-delay:.1s}.hero-name{animation-delay:.2s}.hero-subtitle{animation-delay:.3s}.hero-desc{animation-delay:.4s}.hero-actions{animation-delay:.5s}.hero-socials{animation-delay:.6s}.section{opacity:0;transform:translateY(20px);transition:opacity .6s ease-out,transform .6s ease-out}.section.visible{opacity:1;transform:translateY(0)}.tools-page{min-height:100vh;padding:120px 0 80px;background:var(--bg-primary)}.tools-page .container{max-width:900px}.tools-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:48px;font-size:1.1rem}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.tool-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:36px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);transition:var(--transition);text-decoration:none;color:inherit}.tool-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow);background:var(--bg-card-hover)}.tool-card-icon{font-size:2.5rem;margin-bottom:16px}.tool-card-title{font-size:1.2rem;margin-bottom:8px;color:var(--text-primary)}.tool-card-desc{font-size:.9rem;color:var(--text-secondary);line-height:1.6}.regex-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}.regex-inputs{display:flex;flex-direction:column;gap:20px}.regex-field{display:flex;flex-direction:column;gap:8px}.regex-field label{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.regex-input{padding:12px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.95rem;outline:none;transition:var(--transition)}.regex-input:focus,.regex-textarea:focus{border-color:var(--accent)}.mono{font-family:JetBrains Mono,Fira Code,monospace}.regex-textarea{padding:12px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.9rem;outline:none;resize:vertical;transition:var(--transition);line-height:1.6}.regex-error{color:#f87171;font-size:.85rem;padding:8px 12px;background:#f871711a;border-radius:var(--radius-sm);font-family:JetBrains Mono,monospace}.regex-flags label{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;display:block;margin-bottom:8px}.regex-flags-group{display:flex;gap:6px;flex-wrap:wrap}.regex-flag-btn{width:36px;height:36px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-card);color:var(--text-muted);font-family:JetBrains Mono,monospace;font-size:.85rem;font-weight:600;cursor:pointer;transition:var(--transition)}.regex-flag-btn:hover{border-color:var(--accent);color:var(--accent-light)}.regex-flag-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 0 12px var(--accent-glow)}.regex-results{display:flex;flex-direction:column;gap:24px}.regex-result-section h3{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px}.regex-highlight-box{padding:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.9rem;line-height:1.7;white-space:pre-wrap;word-break:break-word;min-height:60px}.regex-text{color:var(--text-primary)}.regex-match{background:#7c5cfc40;color:var(--accent-light);border-radius:3px;padding:1px 0}.regex-match-list{display:flex;flex-direction:column;gap:6px;margin-top:12px}.regex-match-item{display:flex;align-items:center;gap:12px;padding:8px 12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.85rem}.regex-match-idx{color:var(--text-muted);font-weight:500;min-width:28px}.regex-match-val{color:var(--accent-light);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.regex-match-pos{color:var(--text-muted);font-family:JetBrains Mono,monospace;font-size:.8rem}@media (max-width: 768px){.regex-layout{grid-template-columns:1fr}}