:root{--color-charcoal: #16212F;--color-glacier: #F7FAFC;--color-signal-blue: #3778F6;--color-signal-cyan: #59CDBD;--color-cool-gray: #8796AA;--color-light-bg: #ECF1F6;--color-body-dark: #243247;--color-border: #D7E1EC;--color-border-subtle: #E8EEF5;--color-card-bg: #FFFFFF;--color-hover-blue: #235FDC;--color-tag-bg: #EAF1FA;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--shadow-sm: 0 1px 3px rgba(22, 33, 47, .05);--shadow-md: 0 4px 12px rgba(22, 33, 47, .08);--shadow-lg: 0 10px 25px rgba(22, 33, 47, .12);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--max-width: 1200px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:var(--color-glacier);color:var(--color-body-dark);scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{min-height:100vh;display:flex;flex-direction:column;line-height:1.68;font-size:16px;background-color:var(--color-glacier);color:var(--color-body-dark)}a{color:var(--color-signal-blue);text-decoration:none;transition:color .2s ease,border-color .2s ease}a:hover{color:var(--color-hover-blue)}img,svg{display:block;max-width:100%}button,input,select,textarea{font-family:inherit;font-size:inherit}.archive-badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.78rem;font-weight:600;letter-spacing:.05em;padding:4px 10px;border-radius:var(--radius-sm);background-color:var(--color-tag-bg);color:var(--color-signal-blue);border:1px solid rgba(55,120,246,.2);text-transform:uppercase}.archive-badge:before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background-color:var(--color-signal-blue)}.archive-badge.cyan{background-color:#59cdbd1f;color:#1a7a6e;border-color:#59cdbd66}.archive-badge.cyan:before{background-color:var(--color-signal-cyan)}.archive-badge.dark{background-color:#16212f14;color:var(--color-charcoal);border-color:#16212f33}.archive-badge.dark:before{background-color:var(--color-charcoal)}.section-label{display:flex;align-items:center;gap:12px;margin-bottom:12px}.section-label .code{font-family:var(--font-mono);font-size:.82rem;color:var(--color-signal-blue);font-weight:700;letter-spacing:.1em}.section-label .divider{height:1px;width:40px;background-color:var(--color-border)}.section-label .text{font-size:.85rem;font-weight:600;color:var(--color-cool-gray);letter-spacing:.08em;text-transform:uppercase}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:.95rem;padding:11px 22px;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap}.btn-primary{background-color:var(--color-signal-blue);color:#fff!important;border-color:var(--color-signal-blue);box-shadow:0 2px 8px #3778f647}.btn-primary:hover{background-color:var(--color-hover-blue);border-color:var(--color-hover-blue);box-shadow:0 4px 14px #3778f659;transform:translateY(-1px)}.btn-secondary{background-color:#fff;color:var(--color-charcoal)!important;border-color:var(--color-border);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background-color:var(--color-light-bg);border-color:var(--color-cool-gray);color:var(--color-charcoal)!important}.btn-dark{background-color:var(--color-charcoal);color:#fff!important;border-color:var(--color-charcoal)}.btn-dark:hover{background-color:#0e1620}.btn-ghost{background-color:transparent;color:var(--color-signal-blue)!important;border-color:transparent;padding:8px 14px}.btn-ghost:hover{background-color:var(--color-tag-bg)}.tech-grid-bg{background-image:linear-gradient(to right,rgba(135,150,170,.08) 1px,transparent 1px),linear-gradient(to bottom,rgba(135,150,170,.08) 1px,transparent 1px);background-size:32px 32px}.site-header{position:sticky;top:0;z-index:100;background-color:#f7fafcf0;backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}.brand-logo{display:flex;align-items:center;gap:12px;color:var(--color-charcoal);font-weight:800;font-size:1.25rem;letter-spacing:-.01em}.brand-symbol{width:32px;height:32px;background:linear-gradient(135deg,var(--color-charcoal) 0%,var(--color-signal-blue) 100%);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-mono);font-weight:800;font-size:.95rem;box-shadow:0 2px 6px #3778f640}.brand-text-wrap{display:flex;flex-direction:column}.brand-title{font-size:1.15rem;font-weight:800;line-height:1.1;color:var(--color-charcoal)}.brand-sub{font-size:.68rem;font-family:var(--font-mono);color:var(--color-cool-gray);letter-spacing:.08em;font-weight:600}.main-nav{display:flex;align-items:center;gap:24px}.nav-link{color:var(--color-body-dark);font-size:.93rem;font-weight:500;padding:6px 0;position:relative;transition:color .2s ease}.nav-link:hover,.nav-link.active{color:var(--color-signal-blue)}.nav-link:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background-color:var(--color-signal-blue);transition:width .2s ease}.nav-link:hover:after,.nav-link.active:after{width:100%}.header-actions{display:flex;align-items:center;gap:12px}.search-trigger-btn{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--color-border);padding:7px 12px;border-radius:var(--radius-sm);color:var(--color-cool-gray);font-size:.85rem;cursor:pointer;transition:all .2s ease}.search-trigger-btn:hover{border-color:var(--color-signal-blue);color:var(--color-charcoal)}.search-shortcut{font-family:var(--font-mono);font-size:.72rem;background:var(--color-light-bg);padding:2px 6px;border-radius:3px;border:1px solid var(--color-border)}.mobile-menu-btn{display:none;background:transparent;border:1px solid var(--color-border);padding:8px;border-radius:var(--radius-sm);color:var(--color-charcoal);cursor:pointer}.mobile-nav-drawer{display:none;position:fixed;top:68px;left:0;right:0;background:#fff;border-bottom:2px solid var(--color-signal-blue);padding:20px 24px;box-shadow:var(--shadow-lg);flex-direction:column;gap:16px;z-index:99}.mobile-nav-drawer.open{display:flex}.mobile-nav-link{color:var(--color-charcoal);font-size:1.05rem;font-weight:600;padding:10px 0;border-bottom:1px solid var(--color-border-subtle)}.site-footer{margin-top:auto;background-color:var(--color-charcoal);color:#a0b0c4;border-top:1px solid #233347;padding:60px 0 30px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}.footer-brand .brand-title{color:#fff;margin-top:8px;font-size:1.25rem}.footer-desc{font-size:.88rem;line-height:1.6;color:#8c9eb5;margin-top:12px;max-width:380px}.footer-heading{font-size:.82rem;font-family:var(--font-mono);letter-spacing:.1em;color:#fff;text-transform:uppercase;margin-bottom:18px}.footer-links{list-style:none;display:flex;flex-direction:column;gap:10px}.footer-links a{color:#93a6be;font-size:.9rem;transition:color .2s}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid #223246;padding-top:24px;display:flex;flex-direction:column;gap:12px;font-size:.8rem;color:#6c7f97}.footer-notice{font-size:.76rem;line-height:1.5;color:#61738a}.search-modal-backdrop{display:none;position:fixed;inset:0;background-color:#16212fa6;backdrop-filter:blur(4px);z-index:999;align-items:flex-start;justify-content:center;padding:80px 20px 20px}.search-modal-backdrop.open{display:flex}.search-modal-container{background:#fff;width:100%;max-width:680px;max-height:80vh;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);border:1px solid var(--color-border);display:flex;flex-direction:column;overflow:hidden;animation:modalSlide .2s ease-out}@keyframes modalSlide{0%{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)}}.search-modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--color-border);background:var(--color-glacier)}.search-modal-title{display:flex;align-items:center;gap:10px;font-weight:700;font-size:.95rem;color:var(--color-charcoal)}.search-modal-close{background:transparent;border:none;font-size:1.2rem;color:var(--color-cool-gray);cursor:pointer;padding:4px 8px;border-radius:4px}.search-modal-close:hover{color:var(--color-charcoal);background:var(--color-light-bg)}.search-modal-body{padding:20px;overflow-y:auto;flex:1}.search-modal-body .pagefind-ui{--pagefind-ui-scale: .9;--pagefind-ui-primary: var(--color-signal-blue);--pagefind-ui-text: var(--color-body-dark);--pagefind-ui-background: #FFFFFF;--pagefind-ui-border: var(--color-border);--pagefind-ui-tag: var(--color-tag-bg);--pagefind-ui-border-radius: 4px}.prose{color:var(--color-body-dark);line-height:1.8;font-size:1.05rem}.prose h1,.prose h2,.prose h3,.prose h4{color:var(--color-charcoal);font-weight:800;line-height:1.35;margin-top:2.2rem;margin-bottom:1rem}.prose h1{font-size:2rem;letter-spacing:-.02em}.prose h2{font-size:1.45rem;padding-bottom:8px;border-bottom:1px solid var(--color-border)}.prose h3{font-size:1.2rem}.prose p{margin-bottom:1.25rem}.prose ul,.prose ol{margin-bottom:1.3rem;padding-left:1.6rem}.prose li{margin-bottom:.4rem}.prose blockquote{border-left:4px solid var(--color-signal-blue);background:var(--color-light-bg);padding:12px 18px;margin:1.5rem 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:.95rem;color:#364860}.prose code{font-family:var(--font-mono);font-size:.88em;background-color:var(--color-light-bg);padding:2px 6px;border-radius:3px;border:1px solid var(--color-border);color:#a31515}.prose pre{background-color:var(--color-charcoal);color:#e2e8f0;padding:16px 20px;border-radius:var(--radius-sm);overflow-x:auto;margin:1.5rem 0;font-family:var(--font-mono);font-size:.88rem;border:1px solid #233347}.prose pre code{background:transparent;padding:0;border:none;color:inherit}.prose table{width:100%;border-collapse:collapse;margin:1.8rem 0;font-size:.92rem}.prose th,.prose td{border:1px solid var(--color-border);padding:10px 14px;text-align:left}.prose th{background-color:var(--color-light-bg);font-weight:700;color:var(--color-charcoal)}.prose tr:nth-child(2n){background-color:#fafcfe}@media (max-width: 900px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}@media (max-width: 768px){.main-nav{display:none}.mobile-menu-btn{display:block}.search-shortcut{display:none}.footer-grid{grid-template-columns:1fr;gap:26px}.container{padding:0 16px}}