:root{--bg: #142c34;--bg-1: #1b3a44;--bg-2: #234852;--bg-3: #2e5862;--ink: #f4eee1;--ink-dim: #b3c3c5;--ink-faint: #7c9399;--accent: #ff8a5f;--accent-soft: #ffb091;--accent-deep: #f06a40;--mint: #76e7ce;--mint-deep: #45c6aa;--line: rgba(244, 238, 225, .14);--line-strong: rgba(244, 238, 225, .28);--veil: rgba(12, 26, 31, .55);--glow-warm: radial-gradient(circle at 50% 50%, rgba(255, 138, 95, .26), transparent 70%);--glow-cool: radial-gradient(circle at 50% 50%, rgba(118, 231, 206, .22), transparent 70%);--font-display: "Fraunces", "Noto Serif SC", Georgia, "Songti SC", serif;--font-zh-display: "Noto Serif SC", "Fraunces", "Songti SC", serif;--font-body: "IBM Plex Sans", "IBM Plex Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--fs-display: clamp(2.6rem, 8vw, 6.6rem);--fs-h1: clamp(2rem, 5vw, 3.6rem);--fs-h2: clamp(1.5rem, 3.2vw, 2.4rem);--fs-h3: clamp(1.15rem, 2vw, 1.5rem);--fs-body: clamp(1rem, 1.1vw, 1.075rem);--fs-small: .85rem;--sp-1: .5rem;--sp-2: 1rem;--sp-3: 1.5rem;--sp-4: 2.5rem;--sp-5: 4rem;--sp-6: 6.5rem;--sp-7: 10rem;--r-sm: 8px;--r-md: 16px;--r-lg: 28px;--r-pill: 999px;--shadow-1: 0 2px 14px rgba(0, 0, 0, .35);--shadow-2: 0 18px 50px rgba(0, 0, 0, .45);--shadow-glow: 0 12px 40px rgba(255, 125, 84, .22);--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-in-out: cubic-bezier(.65, 0, .35, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--dur-fast: .22s;--dur-mid: .5s;--dur-slow: .9s;--container: 1240px;--container-narrow: 880px;--nav-h: 76px;--z-scene: 0;--z-content: 10;--z-nav: 100;--z-transition: 1000;--z-cursor: 9999}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;background:var(--bg)}body{font-family:var(--font-body);font-size:var(--fs-body);line-height:1.65;color:var(--ink);background:radial-gradient(120% 75% at 50% -8%,#21424d 0%,transparent 55%),var(--bg);background-attachment:fixed;overflow-x:hidden;min-height:100vh;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}img,canvas{display:block;max-width:100%}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}ul{list-style:none}h1,h2,h3{font-family:var(--font-display);font-weight:600;line-height:1.08;letter-spacing:-.015em}:lang(zh-CN) h1,:lang(zh-CN) h2,:lang(zh-CN) .display{font-family:var(--font-zh-display);font-weight:700}p{max-width:64ch}::selection{background:var(--accent);color:var(--bg)}*{scrollbar-width:thin;scrollbar-color:var(--bg-3) transparent}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--bg-3);border-radius:var(--r-pill);border:2px solid var(--bg)}::-webkit-scrollbar-thumb:hover{background:var(--accent-deep)}:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:4px}:focus:not(:focus-visible){outline:none}.skip-link{position:fixed;top:-120px;left:16px;z-index:var(--z-transition);padding:.7rem 1.1rem;background:var(--accent);color:var(--bg);border-radius:var(--r-sm);font-weight:500;transition:top var(--dur-fast) var(--ease-out)}.skip-link:focus{top:16px}.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(1.25rem,5vw,3.5rem)}.container--narrow{max-width:var(--container-narrow)}.section{padding-block:var(--sp-6);position:relative}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.eyebrow{font-family:var(--font-mono);font-size:var(--fs-small);letter-spacing:.28em;text-transform:uppercase;color:var(--mint)}.btn{display:inline-flex;align-items:center;gap:.6rem;padding:.95rem 1.8rem;border-radius:var(--r-pill);font-weight:500;letter-spacing:.01em;position:relative;will-change:transform;transition:transform var(--dur-fast) var(--ease-out),background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.btn--primary{background:var(--accent);color:var(--bg)}.btn--primary:hover{background:var(--accent-soft)}.btn--ghost{border:1px solid var(--line-strong);color:var(--ink)}.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}.btn[disabled],.btn[aria-disabled=true]{opacity:.45;cursor:not-allowed}.cursor{position:fixed;inset:0;pointer-events:none;z-index:var(--z-cursor);display:none}.cursor__dot,.cursor__ring{position:absolute;top:0;left:0;border-radius:50%;transform:translate(-50%,-50%);will-change:transform}.cursor__dot{width:5px;height:5px;background:var(--accent);transition:opacity .2s var(--ease-out),transform .2s var(--ease-out)}.cursor__ring{width:34px;height:34px;border:1.5px solid rgba(118,231,206,.6);transform:translate(-50%,-50%) scale(var(--rs, 1));transition:width .28s var(--ease-out),height .28s var(--ease-out),border-color .28s var(--ease-out),background .28s var(--ease-out),transform .18s var(--ease-out)}.cursor.is-hover .cursor__ring{width:58px;height:58px;border-color:var(--accent);background:#ff8a5f1a}.cursor.is-hover .cursor__dot{opacity:0;transform:translate(-50%,-50%) scale(.4)}.cursor.is-down .cursor__ring{--rs: .82}.fx-particles{position:fixed;inset:0;pointer-events:none;z-index:calc(var(--z-cursor) - 1)}@media (pointer: fine){.cursor{display:block}body.custom-cursor-on,body.custom-cursor-on a,body.custom-cursor-on button{cursor:none}}.page-transition{position:fixed;inset:0;z-index:var(--z-transition);pointer-events:none;display:grid;place-items:center}.page-transition__panel{position:absolute;inset:0;background:var(--bg-1);transform:scaleY(0);transform-origin:bottom;transition:transform var(--dur-mid) var(--ease-in-out)}.page-transition__mark{position:relative;font-family:var(--font-zh-display);font-size:clamp(2rem,6vw,4rem);color:var(--accent);opacity:0;transition:opacity .3s var(--ease-out)}.page-transition.is-covering .page-transition__panel{transform:scaleY(1);transform-origin:bottom}.page-transition.is-covering .page-transition__mark{opacity:1}.page-transition.is-revealing .page-transition__panel{transform:scaleY(0);transform-origin:top}.toast-stack{position:fixed;bottom:28px;left:50%;transform:translate(-50%);z-index:var(--z-transition);display:flex;flex-direction:column;gap:.6rem;pointer-events:none}.toast{display:flex;align-items:center;gap:.6rem;padding:.8rem 1.3rem;background:var(--bg-2);border:1px solid var(--line-strong);border-radius:var(--r-pill);color:var(--ink);box-shadow:var(--shadow-2);transform:translateY(20px);opacity:0;transition:transform .4s var(--ease-spring),opacity .3s var(--ease-out)}.toast.is-in{transform:translateY(0);opacity:1}.toast__icon{color:var(--mint);display:grid;place-items:center}.scene-loader{position:absolute;inset:0;display:grid;place-content:center;gap:1rem;background:var(--bg);z-index:5;transition:opacity var(--dur-mid) var(--ease-out)}.scene-loader.is-done{opacity:0;pointer-events:none}.scene-loader__bar{width:min(240px,50vw);height:2px;background:var(--line);overflow:hidden}.scene-loader__fill{height:100%;width:0%;background:var(--accent);transition:width .2s linear}.scene-loader__pct{font-family:var(--font-mono);font-size:var(--fs-small);color:var(--ink-dim);letter-spacing:.2em}.reveal-line{overflow:hidden}.reveal-word,.reveal-char{display:inline-block;transform:translateY(110%);opacity:0}.is-revealed .reveal-word,.is-revealed .reveal-char{transform:translateY(0);opacity:1;transition:transform .9s var(--ease-out),opacity .7s var(--ease-out)}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.cursor,.fx-particles{display:none!important}body.custom-cursor-on,body.custom-cursor-on a,body.custom-cursor-on button{cursor:auto!important}.reveal-word,.reveal-char{transform:none;opacity:1}}.nav{position:fixed;inset:0 0 auto;z-index:var(--z-nav);transition:transform var(--dur-mid) var(--ease-out),background var(--dur-mid) var(--ease-out),backdrop-filter var(--dur-mid)}.nav.is-scrolled{background:#0a141ab8;backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.nav.is-hidden{transform:translateY(-110%)}.nav__inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:1.5rem}.nav__brand{display:flex;align-items:center;gap:.7rem;will-change:transform}.nav__brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--accent);color:var(--bg);font-family:var(--font-zh-display);font-size:1.25rem}.nav__brand-text{display:flex;flex-direction:column;line-height:1.1;font-weight:500}.nav__brand-text small{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-dim)}.nav__menu{display:flex;align-items:center;gap:2rem}.nav__links{display:flex;gap:1.8rem}.nav__link{position:relative;font-size:.95rem;color:var(--ink-dim);padding:.3rem 0;transition:color var(--dur-fast) var(--ease-out)}.nav__link:after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:right;transition:transform var(--dur-fast) var(--ease-out)}.nav__link:hover,.nav__link.is-active{color:var(--ink)}.nav__link:hover:after,.nav__link.is-active:after{transform:scaleX(1);transform-origin:left}.nav__burger{display:none;flex-direction:column;gap:6px;padding:10px}.nav__burger span{width:24px;height:2px;background:var(--ink);transition:transform var(--dur-fast),opacity var(--dur-fast)}.nav.is-open .nav__burger span:first-child{transform:translateY(8px) rotate(45deg)}.nav.is-open .nav__burger span:last-child{transform:translateY(-8px) rotate(-45deg)}.lang-switch{display:inline-flex;align-items:center;gap:.35rem;padding:.4rem .8rem;border:1px solid var(--line-strong);border-radius:var(--r-pill);font-family:var(--font-mono);font-size:.78rem;color:var(--ink-dim);transition:border-color var(--dur-fast),color var(--dur-fast)}.lang-switch:hover{border-color:var(--mint);color:var(--ink)}.lang-switch__cur{color:var(--ink)}.lang-switch__sep{opacity:.4}.lang-shifting #main,.lang-shifting #nav-root,.lang-shifting #footer-root{opacity:0;transition:opacity .18s var(--ease-out)}#main,#nav-root,#footer-root{transition:opacity .28s var(--ease-out)}.footer{border-top:1px solid var(--line);background:var(--bg-1)}.footer__inner{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:2.5rem;padding-block:var(--sp-5)}.footer__mark{font-family:var(--font-zh-display);font-size:1.5rem;color:var(--accent)}.footer__tagline{margin-top:.8rem;color:var(--ink-dim);max-width:28ch}.footer__nav ul{display:flex;flex-direction:column;gap:.7rem}.footer__nav a{color:var(--ink-dim);transition:color var(--dur-fast)}.footer__nav a:hover{color:var(--accent)}.footer__meta{display:flex;flex-direction:column;gap:.5rem;color:var(--ink-faint);font-size:var(--fs-small)}.footer__email{color:var(--ink);font-family:var(--font-mono)}.footer__email:hover{color:var(--mint)}.site-beian{border-top:1px solid var(--line);background:var(--bg-1);text-align:center;padding-block:1rem;font-size:var(--fs-small);color:var(--ink-faint)}.site-beian a{color:var(--ink-dim);letter-spacing:.02em;transition:color var(--dur-fast)}.site-beian a:hover{color:var(--accent)}@media (max-width: 860px){.nav__burger{display:flex}.nav__menu{position:fixed;inset:var(--nav-h) 0 auto 0;flex-direction:column;gap:1.6rem;padding:2.5rem;background:#0a141af5;backdrop-filter:blur(16px);border-bottom:1px solid var(--line);transform:translateY(-130%);transition:transform var(--dur-mid) var(--ease-in-out)}.nav.is-open .nav__menu{transform:translateY(0)}.nav__links{flex-direction:column;gap:1.3rem;font-size:1.2rem}.footer__inner{grid-template-columns:1fr;gap:2rem}}