:root{--bg:#f8fafc;--bg-alt:#eef2ff;--surface:#ffffff;--text:#0f172a;--text-muted:#475569;--border:#e2e8f0;--primary:#6366f1;--primary-dark:#4f46e5;--primary-soft:#e0e7ff;--danger:#dc2626;--radius:12px;--radius-sm:8px;--shadow:0 1px 3px rgba(15,23,42,0.08),0 8px 24px rgba(15,23,42,0.06);--max-width:1080px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 22px;border-radius:999px;font-size:.95rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .15s ease}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}.btn-ghost:hover{background:var(--bg-alt);border-color:var(--primary);color:var(--primary)}.btn-danger{background:#fef2f2;color:var(--danger);border-color:#fecaca}.btn-danger:hover{background:var(--danger);color:#fff}.btn-small{padding:6px 14px;font-size:.85rem}.btn-block{width:100%}.navbar{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}.nav-logo{font-weight:700;font-size:1.15rem}.nav-links{display:flex;gap:4px;align-items:center}.nav-links a{padding:6px 12px;border-radius:var(--radius-sm);color:var(--text-muted);font-size:.95rem;transition:all .15s}.nav-links a:hover{color:var(--primary);background:var(--primary-soft)}.nav-links a.nav-admin{margin-left:6px;color:var(--primary);border:1px solid var(--primary)}.nav-links a.nav-admin:hover{background:var(--primary);color:#fff}.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:6px}.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px}.hero{padding:96px 0 72px;text-align:center;background:radial-gradient(60% 50% at 50% 0,rgba(99,102,241,.12),transparent 70%),var(--bg)}.hero-inner{display:flex;flex-direction:column;align-items:center}.hero-avatar{width:132px;height:132px;border-radius:50%;object-fit:cover;border:4px solid #fff;box-shadow:var(--shadow);margin-bottom:24px}.hero-name{margin:0;font-size:2.5rem;font-weight:800;letter-spacing:-.02em}.hero-title{margin:8px 0 0;font-size:1.25rem;font-weight:600;background:linear-gradient(90deg,var(--primary),#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-location{margin:8px 0 0;color:var(--text-muted)}.hero-actions{gap:12px}.hero-actions,.hero-socials{display:flex;margin-top:28px;flex-wrap:wrap;justify-content:center}.hero-socials{gap:10px}.hero-socials a{padding:6px 16px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--text-muted);font-size:.9rem;transition:all .15s}.hero-socials a:hover{color:var(--primary);border-color:var(--primary)}.section{padding:80px 0}.section-alt{background:var(--bg-alt)}.section-title{margin:0 0 36px;font-size:1.75rem;font-weight:800;text-align:center;letter-spacing:-.01em}.edu-heading{margin-top:56px}.about-bio{max-width:720px;margin:0 auto;white-space:pre-line;color:var(--text-muted);font-size:1.05rem}.about-meta{max-width:720px;margin:28px auto 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}.about-meta a{color:var(--primary)}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:20px;gap:20px}.skill-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.skill-category{margin:0 0 16px;font-size:1.1rem;font-weight:700}.skill-tags{display:flex;flex-wrap:wrap;gap:8px}.tag{display:inline-block;padding:4px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-size:.85rem;font-weight:500}.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));grid-gap:24px;gap:24px}.project-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}.project-image{width:100%;height:180px;object-fit:cover;background:var(--bg-alt)}.project-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1}.project-name{margin:0;font-size:1.2rem;font-weight:700}.project-desc,.project-highlights{margin:0;color:var(--text-muted)}.project-highlights{padding-left:20px;font-size:.92rem}.project-tech{display:flex;flex-wrap:wrap;gap:6px}.project-links{display:flex;gap:10px;margin-top:auto;padding-top:8px}.timeline{position:relative;max-width:720px;margin:0 auto;padding-left:24px}.timeline:before{content:"";position:absolute;left:5px;top:4px;bottom:4px;width:2px;background:var(--border)}.timeline-item{position:relative;padding-bottom:28px}.timeline-dot{position:absolute;left:-24px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}.timeline-role{margin:0;font-size:1.1rem;font-weight:700}.timeline-meta{margin:4px 0 8px;color:var(--text-muted);font-size:.9rem}.timeline-desc{margin:0;color:var(--text-muted)}.education-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:20px;gap:20px;max-width:720px;margin:0 auto}.edu-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.edu-card h3{margin:0 0 6px;font-size:1.1rem}.contact-inner{text-align:center}.contact-email{margin:0 0 20px;font-size:1.15rem}.contact-email a{color:var(--primary)}.contact-socials{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.contact-chip{padding:8px 20px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--text-muted);font-weight:500;transition:all .15s}.contact-chip:hover{color:var(--primary);border-color:var(--primary)}.footer{padding:28px 0;text-align:center;color:var(--text-muted);font-size:.9rem;border-top:1px solid var(--border);background:var(--surface)}.admin-login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-alt);padding:24px}.admin-login-card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px}.admin-login-card h1{margin:0;font-size:1.4rem;text-align:center}.admin-login-card input{padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:1rem}.admin-login-card input:focus{outline:none;border-color:var(--primary)}.admin-hint{margin:0;color:var(--text-muted);font-size:.88rem}.admin-error{margin:0;color:var(--danger);font-size:.9rem}.admin-back{text-align:center;color:var(--text-muted);font-size:.9rem}.admin-back:hover{color:var(--primary)}.admin-loading{padding:40px;text-align:center;color:var(--text-muted)}.admin-wrap{min-height:100vh;background:var(--bg)}.admin-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 24px;background:var(--surface);border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:20;flex-wrap:wrap}.admin-top-title h1{margin:0;font-size:1.2rem}.admin-save-hint{color:var(--text-muted);font-size:.85rem}.admin-top-actions{display:flex;gap:8px;flex-wrap:wrap}.admin-tabs{display:flex;gap:4px;padding:12px 24px 0;flex-wrap:wrap}.admin-tab{padding:8px 16px;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;font-size:.95rem}.admin-tab:hover{color:var(--primary)}.admin-tab.active{background:var(--primary);color:#fff}.admin-body{max-width:880px;margin:0 auto;padding:24px}.admin-tab-content{display:flex;flex-direction:column;gap:20px}.admin-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.admin-section-title{margin:0;padding:14px 20px;font-size:1rem;font-weight:700;background:var(--bg-alt);border-bottom:1px solid var(--border)}.admin-section-body{padding:20px;display:flex;flex-direction:column;gap:16px}.admin-card-actions{display:flex;justify-content:flex-end}.admin-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.admin-avatar-row{display:flex;gap:20px;align-items:flex-start}.admin-avatar-preview{width:88px;height:88px;border-radius:50%;object-fit:cover;border:2px solid var(--border)}.admin-subtitle{margin:0;font-size:1.1rem}.admin-subtitle-spaced{margin-top:20px}.admin-footer{padding:20px 24px;text-align:center;color:var(--text-muted);font-size:.88rem;border-top:1px solid var(--border)}.admin-footer code{background:var(--bg-alt);padding:2px 6px;border-radius:4px}.field{display:flex;flex-direction:column;gap:6px}.field-label{font-size:.9rem;font-weight:600;color:var(--text)}.admin-login-card input,.admin-section input[type=file],.field input,.field textarea{padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.95rem;font-family:inherit;color:var(--text);background:var(--surface)}.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.field textarea{resize:vertical}.admin-section input[type=file],.field input[type=file]{padding:8px}.string-list{flex-direction:column}.string-list,.string-list-row{display:flex;gap:8px}.string-list-row input{flex:1 1;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.95rem}.string-list-row input:focus{outline:none;border-color:var(--primary)}.btn-remove{width:34px;border:1px solid var(--border);background:var(--surface);color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;font-size:1.1rem;line-height:1}.btn-remove:hover{color:var(--danger);border-color:var(--danger)}@media (max-width:720px){.nav-toggle{display:flex}.nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--border);padding:12px 24px;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:10px 12px}.nav-links a.nav-admin{margin-left:0}.hero{padding:64px 0 48px}.hero-name{font-size:2rem}.section{padding:56px 0}.admin-row{grid-template-columns:1fr}.admin-top{flex-direction:column;align-items:stretch}}