:root{--color-bg-base:#070707;--color-bg-surface:#0f0f0f;--color-bg-elevated:#141414;--color-bg-overlay:#07070a;--color-text-primary:#eee;--color-text-secondary:#a0a0ab;--color-text-disabled:#555560;--color-accent:#266980;--color-accent-hover:#31849f;--color-accent-subtle:#26698026;--color-danger:#a33;--color-warning:#bb4;--color-success:#409040;--color-divider:#ffffff14;--glass-bg:#ffffff0d;--glass-bg-hover:#ffffff17;--glass-bg-strong:#ffffff1f;--glass-blur:blur(12px);--glass-blur-heavy:blur(24px);--glass-border:#ffffff1a;--glass-shadow:0 8px 32px #00000073;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--space-9:96px;--space-10:128px;--radius-sm:6px;--radius-md:12px;--radius-lg:20px;--radius-xl:32px;--radius-full:9999px;--transition-fast:.15s ease;--transition-base:.25s ease;--transition-slow:.4s ease;--z-base:0;--z-dropdown:10;--z-sticky:20;--z-overlay:30;--z-modal:40;--z-toast:50;--z-nav:60;--container-max:1200px;--container-prose:720px;--header-height:72px;--footer-height:80px;--bp-sm:576px;--bp-md:768px;--bp-lg:1024px;--bp-xl:1280px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}*{border:none;outline:none;text-decoration:none}html{scroll-behavior:smooth}ul,ol{list-style:none}img,video,svg,canvas{max-width:100%;display:block}button,input,select,textarea{font:inherit;color:inherit;cursor:pointer;appearance:none;background:0 0}table{border-collapse:collapse;border-spacing:0}@font-face{font-family:MiSans;src:url(/fonts/MiSansVF.ttf)format("truetype");font-weight:100 900;font-style:normal;font-display:swap}@font-face{font-family:JetBrains Mono;src:url(/fonts/JetBrainsMono%5Bwght%5D.ttf)format("truetype");font-weight:100 900;font-style:normal;font-display:swap}:root{--font-body:"MiSans", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--font-mono:"JetBrains 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1px 0 var(--glass-border)}.glass-overlay{-webkit-backdrop-filter:var(--glass-blur-heavy);z-index:var(--z-overlay);background:#07070abf;position:fixed;inset:0}.glass-accent{background:var(--color-accent-subtle);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-md);transition:background var(--transition-base), box-shadow var(--transition-base);box-shadow:0 4px 24px #26698033,inset 0 1px #26698040}.glass-accent:hover{background:#26698038;box-shadow:0 8px 32px #2669804d,inset 0 1px #26698059}.nav-overlay{z-index:var(--z-nav);-webkit-backdrop-filter:var(--glass-blur-heavy);opacity:0;visibility:hidden;transition:opacity var(--transition-slow), visibility var(--transition-slow);background:#080a0de0;align-items:center;display:flex;position:fixed;inset:0}.nav-overlay--visible{opacity:1;visibility:visible}.nav-close-btn{top:var(--space-6);left:var(--space-6);border-radius:var(--radius-full);background:var(--glass-bg);width:44px;height:44px;color:var(--color-text-secondary);cursor:pointer;transition:background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);justify-content:center;align-items:center;font-size:1.2rem;display:flex;position:absolute}.nav-close-btn:hover{background:var(--glass-bg-hover);color:var(--color-text-primary);transform:rotate(90deg)}.nav-menu-root{max-height:80vh;padding-block:var(--space-7);margin-left:8%;overflow:hidden auto}@keyframes navItemIn{0%{opacity:0;transform:translate(-28px)}to{opacity:1;transform:translate(0)}}@keyframes navItemOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(-28px)}}.nav-overlay--visible .nav-list--d0>.nav-item{animation:.32s cubic-bezier(.4,0,.2,1) both navItemIn;animation-delay:calc(var(--item-idx,0) * 50ms + 30ms)}.nav-overlay--closing .nav-list--d0>.nav-item{animation:.22s both navItemOut;animation-delay:calc((var(--nav-total,7) - 1 - var(--item-idx,0)) * 25ms)}.nav-menu-root::-webkit-scrollbar{width:3px}.nav-menu-root::-webkit-scrollbar-track{background:0 0}.nav-menu-root::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:var(--radius-full)}.nav-list{gap:var(--space-1);flex-direction:column;display:flex}.nav-item-row{align-items:center;gap:var(--space-2);border-radius:var(--radius-sm);transition:background var(--transition-fast);display:flex}.nav-item-row:hover{background:var(--glass-bg)}.nav-item-label{padding:var(--space-3) var(--space-4);color:var(--color-text-primary);letter-spacing:.01em;cursor:pointer;transition:color var(--transition-fast);flex:1;font-size:1.35rem;font-weight:500;display:block}.nav-list--d0>.nav-item>.nav-item-row .nav-item-label{letter-spacing:-.01em;font-size:1.6rem;font-weight:600}.nav-item-label:hover{color:var(--color-accent-hover)}.nav-chevron{border-radius:var(--radius-sm);width:34px;height:34px;color:var(--color-text-secondary);cursor:pointer;margin-right:var(--space-3);transition:color var(--transition-fast), transform var(--transition-base), background var(--transition-fast);flex-shrink:0;justify-content:center;align-items:center;font-size:.8rem;display:flex}.nav-chevron:hover{color:var(--color-text-primary);background:var(--glass-bg-hover)}.nav-item--expanded>.nav-item-row .nav-chevron{color:var(--color-accent);transform:rotate(90deg)}.nav-sublist{padding-left:var(--space-5);flex-direction:column;gap:2px;height:0;transition:height .28s cubic-bezier(.4,0,.2,1);display:flex;overflow:hidden}.nav-sublist .nav-item-label{color:var(--color-text-secondary);font-size:1.05rem;font-weight:400}.nav-sublist .nav-item-label:hover{color:var(--color-accent-hover)}@media (width<=768px){.nav-menu-root{margin-left:var(--space-7)}.nav-list--d0>.nav-item>.nav-item-row .nav-item-label{font-size:1.35rem}.nav-item-label{font-size:1.1rem}}@media (width<=576px){.nav-close-btn{top:var(--space-4);left:var(--space-4)}.nav-menu-root{margin-left:var(--space-5)}}.site-header{z-index:var(--z-sticky);height:var(--header-height);-webkit-backdrop-filter:blur(18px);background:#0a0c0fb8;position:fixed;top:0;left:0;right:0;box-shadow:0 4px 32px #00000059}.header-inner{height:100%;max-width:var(--container-max);padding-inline:var(--space-5);align-items:center;gap:var(--space-3);margin-inline:auto;display:flex}.header-avatar{border-radius:var(--radius-full);width:40px;height:40px;transition:opacity 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var(--transition-fast);font-size:.65rem}.header-nav-item:hover .header-nav-chevron{color:var(--color-accent);transform:rotate(180deg)}.header-dropdown{min-width:160px;padding:var(--space-2);-webkit-backdrop-filter:blur(20px);border-radius:var(--radius-md);opacity:0;pointer-events:none;background:#14181eb8;margin-top:6px;transition:opacity .2s,transform .2s cubic-bezier(.4,0,.2,1);position:absolute;top:100%;left:0;transform:translateY(-6px);box-shadow:0 12px 36px #00000073}.header-dropdown:before{content:"";height:10px;position:absolute;top:-10px;left:0;right:0}.header-nav-item--has-dropdown:hover .header-dropdown{opacity:1;pointer-events:auto;transform:translateY(0)}.header-dropdown-item{padding:var(--space-2) var(--space-3);color:var(--color-text-secondary);border-radius:var(--radius-sm);white-space:nowrap;transition:color var(--transition-fast), background 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var(--transition-fast);justify-content:center;align-items:center;font-size:1rem;display:flex}.footer-nav-toggle:hover{color:var(--color-text-primary);background:var(--glass-bg)}.footer-social-link{border-radius:var(--radius-sm);width:32px;height:32px;color:var(--color-text-secondary);transition:color var(--transition-fast), background var(--transition-fast);justify-content:center;align-items:center;font-size:.95rem;display:flex}.footer-social-link:hover{color:var(--color-text-primary);background:var(--glass-bg)}.footer-center{text-align:center;flex:1}.footer-copyright{color:var(--color-text-disabled);font-size:.8rem;font-family:var(--font-mono);letter-spacing:.02em}.footer-right{align-items:center;gap:var(--space-2);display:flex}.footer-link{padding:var(--space-1) var(--space-3);color:var(--color-text-secondary);border-radius:var(--radius-sm);transition:color var(--transition-fast), background var(--transition-fast);font-size:.85rem}.footer-link:hover{color:var(--color-text-primary);background:var(--glass-bg)}@media (width<=768px){.footer-inner{gap:var(--space-4);text-align:center;flex-direction:column}.footer-center{order:-1}.footer-right{flex-wrap:wrap;justify-content:center}}.home-page{flex-direction:column;flex:1;display:flex}.home-hero{padding-top:var(--header-height);padding-bottom:var(--space-9);padding-inline:var(--space-5);text-align:center;flex:1;justify-content:center;align-items:center;display:flex}.home-hero-content{align-items:center;gap:var(--space-5);flex-direction:column;max-width:640px;display:flex}.home-title{letter-spacing:-.03em;background:linear-gradient(135deg, var(--color-text-primary) 40%, var(--color-accent-hover) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:clamp(2.4rem,6vw,4rem);font-weight:700;line-height:1.1}.home-subtitle{color:var(--color-text-secondary);letter-spacing:.02em;font-size:clamp(1rem,2.5vw,1.25rem);font-weight:400}.home-cta{justify-content:center;align-items:center;gap:var(--space-3);flex-wrap:wrap;width:100%;display:flex}.btn-primary{padding:var(--space-3) var(--space-6);border-radius:var(--radius-full);background:var(--color-accent);color:#fff;cursor:pointer;transition:background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);font-size:1rem;font-weight:600}.btn-primary:hover{background:var(--color-accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px #26698066}.btn-ghost{padding:var(--space-3) var(--space-6);border-radius:var(--radius-full);background:var(--glass-bg);color:var(--color-text-primary);cursor:pointer;-webkit-backdrop-filter:var(--glass-blur);box-shadow:inset 0 1px 0 var(--glass-border);transition:background var(--transition-fast), transform var(--transition-fast);font-size:1rem;font-weight:500}.btn-ghost:hover{background:var(--glass-bg-hover);transform:translateY(-2px)}body:not(.has-bg){background-image:radial-gradient(at 20%,#2669802e 0%,#0000 55%),radial-gradient(at 80% 20%,#2669801a 0%,#0000 55%)}@media (width<=576px){.home-hero{padding-inline:var(--space-4)}.home-cta{flex-direction:column;width:100%}.btn-primary,.btn-ghost{text-align:center;width:100%}}