:root{--k-red:#b81111;--k-red-hot:#e3201b;--k-red-deep:#6e0a0a;--ink:#0a0a0b;--carbon-900:#111214;--carbon-800:#18191c;--carbon-700:#24262a;--carbon-600:#34363b;--steel:#8a8f97;--silver:#c8cbd0;--paper:#efefec;--white:#fff;--bg:var(--ink);--fg:var(--white);--fg-muted:#a7abb2;--line:#ffffff1a;--line-strong:#fff3;--accent:var(--k-red);--font-display:"Saira", "Noto Sans SC", system-ui, sans-serif;--font-body:"Montserrat", "Noto Sans SC", system-ui, -apple-system, sans-serif;--font-cjk:"Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--step--1:clamp(.78rem, .76rem + .1vw, .84rem);--step-0:clamp(.94rem, .9rem + .18vw, 1.06rem);--step-1:clamp(1.12rem, 1.04rem + .36vw, 1.36rem);--step-2:clamp(1.35rem, 1.2rem + .68vw, 1.84rem);--step-3:clamp(1.7rem, 1.4rem + 1.3vw, 2.6rem);--step-4:clamp(2.2rem, 1.6rem + 2.6vw, 4rem);--step-5:clamp(2.7rem, 1.8rem + 4.2vw, 5.8rem);--step-6:clamp(3.2rem, 1.9rem + 6vw, 8.4rem);--gutter:clamp(1.25rem, .8rem + 2.2vw, 3.5rem);--section:clamp(5rem, 3.5rem + 7vw, 10rem);--max:1440px;--radius:2px;--slant:17deg;--slant-x:.3057;--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--dur-1:.3s;--dur-2:.6s;--dur-3:.9s;--header-h:68px}@media (width>=1024px){:root{--header-h:84px}}*,:before,:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:var(--header-h);background:var(--bg)}html.lenis,html.lenis body{height:auto}.lenis.lenis-smooth{scroll-behavior:auto!important}.lenis.lenis-stopped{overflow:hidden}body{background:var(--bg);min-height:100svh;color:var(--fg);font-family:var(--font-body);font-size:var(--step-0);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.65;overflow-x:clip}:lang(zh) body,html:lang(zh-Hans) body{font-family:var(--font-cjk);line-height:1.8}img,picture,svg,video,canvas{max-width:100%;display:block}img{height:auto}picture{display:contents}input,button,textarea,select{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:0;padding:0}a{color:inherit;text-decoration:none}ul[role=list],ol[role=list]{padding:0;list-style:none}h1,h2,h3,h4{font-weight:inherit;font-size:inherit;text-wrap:balance;line-height:1.05}p{text-wrap:pretty}::selection{background:var(--k-red);color:var(--white)}:focus-visible{outline:2px solid var(--k-red-hot);outline-offset:3px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:200;background:var(--k-red);color:var(--white);padding:.75rem 1rem;font-weight:600;position:fixed;top:-4rem;left:1rem}.skip-link:focus{top:1rem}.container{width:100%;max-width:var(--max);padding-inline:var(--gutter);margin-inline:auto}.section{padding-block:var(--section);position:relative}.section--tight{padding-block:calc(var(--section) * .6)}.section--paper{background:var(--paper);color:var(--ink);--fg:var(--ink);--fg-muted:#5b5f66;--line:#0000001a;--line-strong:#0003}.section--carbon{background:var(--carbon-900)}.stack>*+*{margin-top:var(--stack,1rem)}.display{font-family:var(--font-display);font-variation-settings:"wdth" 118;text-transform:uppercase;letter-spacing:-.01em;font-style:italic;font-weight:800;font-stretch:118%;line-height:.92}:lang(zh) .display{font-family:var(--font-cjk);font-variation-settings:normal;letter-spacing:.02em;font-style:normal;font-weight:900;line-height:1.12}.display em{font-style:inherit;color:var(--k-red-hot)}.section--paper .display em{color:var(--k-red)}.h1{font-size:var(--step-6)}.h2{font-size:var(--step-5)}.h3{font-size:var(--step-3)}.h4{font-size:var(--step-2)}.eyebrow{font-family:var(--font-display);font-weight:600;font-size:var(--step--1);letter-spacing:.18em;text-transform:uppercase;color:var(--fg-muted);align-items:center;gap:.75rem;display:inline-flex}:lang(zh) .eyebrow{font-family:var(--font-cjk);letter-spacing:.12em}.eyebrow:before{content:"";background:var(--k-red);width:1.6rem;height:.5rem;transform:skewX(calc(var(--slant) * -1))}.eyebrow--plain:before{display:none}.lead{font-size:var(--step-1);color:var(--fg-muted);max-width:46ch;line-height:1.6}.muted{color:var(--fg-muted)}.mono-num{font-family:var(--font-display);font-variant-numeric:tabular-nums}.btn{--h:3.25rem;--sx:calc(var(--h) * var(--slant-x));min-height:var(--h);padding:0 calc(1.6rem + var(--sx) * .5);font-family:var(--font-display);letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;isolation:isolate;transition:color var(--dur-1) ease;justify-content:center;align-items:center;gap:.75rem;font-size:.82rem;font-weight:700;display:inline-flex;position:relative}:lang(zh) .btn{font-family:var(--font-cjk);letter-spacing:.08em;font-size:.9rem}.btn:before,.btn:after{content:"";z-index:-1;clip-path:polygon(var(--sx) 0, 100% 0, calc(100% - var(--sx)) 100%, 0 100%);position:absolute;inset:0}.btn--primary{color:var(--white)}.btn--primary:before{background:var(--k-red)}.btn--primary:after{background:var(--k-red-hot);transform-origin:0;transition:transform var(--dur-2) var(--ease-out);transform:scaleX(0)}.btn--primary:hover:after{transform:scaleX(1)}.btn--ghost{color:var(--fg)}.btn--ghost:before{background:var(--line-strong)}.btn--ghost:after{background:var(--bg);inset:1px}.section--paper .btn--ghost:after{background:var(--paper)}.section--carbon .btn--ghost:after{background:var(--carbon-900)}.btn--ghost:hover:before{background:var(--k-red)}.btn svg{width:1rem;height:1rem;transition:transform var(--dur-1) var(--ease-out)}.btn:hover svg{transform:translate(3px)}.link-arrow{font-family:var(--font-display);letter-spacing:.12em;text-transform:uppercase;transition:background-size var(--dur-2) var(--ease-out);background:linear-gradient(currentColor,currentColor) 0 100%/0 1px no-repeat;align-items:center;gap:.5rem;padding-bottom:2px;font-size:.8rem;font-weight:600;display:inline-flex}:lang(zh) .link-arrow{font-family:var(--font-cjk);letter-spacing:.06em;font-size:.9rem}.link-arrow:hover{background-size:100% 1px}.link-arrow svg{width:.9rem;height:.9rem}.media{background:var(--carbon-800);position:relative;overflow:hidden}.media img{object-fit:cover;width:100%;height:100%}.slash-mask{clip-path:polygon(calc(var(--slash-w,18%)) 0, 100% 0, 100% 100%, 0 100%)}.gloss{position:relative;overflow:hidden}.gloss:after{content:"";width:40%;transform:skewX(calc(var(--slant) * -1)) translateX(0);transition:transform 1.1s var(--ease-out);pointer-events:none;background:linear-gradient(100deg,#0000,#ffffff2e,#0000);position:absolute;inset:-20% auto -20% -60%}@media (hover:hover){.gloss:hover:after{transform:skewX(calc(var(--slant) * -1)) translateX(520%)}}.chip{border:1px solid var(--line-strong);font-size:var(--step--1);align-items:center;gap:.5rem;padding:.4rem .8rem;line-height:1.2;display:inline-flex}.chip-dot{background:var(--dot,var(--k-red));width:.5rem;height:.5rem;transform:skewX(calc(var(--slant) * -1))}html.motion [data-reveal]{visibility:hidden}html.motion-ready [data-reveal]{visibility:visible}.line-mask{margin-bottom:-.08em;padding-bottom:.08em;display:block;overflow:hidden}.line-mask>span{display:block}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.logo[data-astro-cid-f7espo7c]{line-height:0;display:inline-block}.logo[data-astro-cid-f7espo7c] svg{width:100%;height:auto}.site-header[data-astro-cid-nen7h5rs]{z-index:100;height:var(--header-h);transition:background var(--dur-2) ease, border-color var(--dur-2) ease, transform var(--dur-2) var(--ease-out);border-bottom:1px solid #0000;position:fixed;inset:0 0 auto}.site-header[data-astro-cid-nen7h5rs].is-scrolled{-webkit-backdrop-filter:blur(16px)saturate(140%);border-color:var(--line);background:#0a0a0bc7}.site-header[data-astro-cid-nen7h5rs].is-hidden{transform:translateY(-100%)}html.menu-open .site-header[data-astro-cid-nen7h5rs]{backdrop-filter:none;background:0 0;border-color:#0000;transform:none}.bar[data-astro-cid-nen7h5rs]{justify-content:space-between;align-items:center;gap:1.5rem;height:100%;display:flex}.brand[data-astro-cid-nen7h5rs]{width:clamp(112px,9vw,150px);color:var(--white);z-index:2;display:block;position:relative}.desk-nav[data-astro-cid-nen7h5rs]{display:none}.desk-nav[data-astro-cid-nen7h5rs] ul[data-astro-cid-nen7h5rs]{gap:clamp(1.25rem,2.2vw,2.5rem);display:flex}.desk-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{font-family:var(--font-display);letter-spacing:.14em;text-transform:uppercase;color:var(--fg-muted);transition:color var(--dur-1) ease;padding-block:.5rem;font-size:.8rem;font-weight:600;position:relative}:lang(zh) .desk-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{font-family:var(--font-cjk);letter-spacing:.06em;font-size:.92rem}.desk-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:after{content:"";background:var(--k-red);transform-origin:100%;height:2px;transition:transform var(--dur-2) var(--ease-out);position:absolute;bottom:0;left:0;right:0;transform:scaleX(0)}.desk-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:hover,.desk-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs][aria-current]{color:var(--white)}.desk-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:hover:after,.desk-nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs][aria-current]:after{transform-origin:0;transform:scaleX(1)}.actions[data-astro-cid-nen7h5rs]{z-index:2;align-items:center;gap:.75rem;display:flex;position:relative}.lang[data-astro-cid-nen7h5rs]{min-height:44px;font-family:var(--font-display);letter-spacing:.1em;color:var(--fg-muted);align-items:center;gap:.4rem;padding-inline:.5rem;font-size:.8rem;font-weight:600;display:inline-flex}.lang[data-astro-cid-nen7h5rs]:hover{color:var(--white)}.lang[data-astro-cid-nen7h5rs] svg{width:1rem;height:1rem}.cta[data-astro-cid-nen7h5rs]{--h:2.75rem;display:none}.burger[data-astro-cid-nen7h5rs]{place-items:center;width:44px;height:44px;display:grid}.burger-lines[data-astro-cid-nen7h5rs]{width:26px;height:12px;display:block;position:relative}.burger-lines[data-astro-cid-nen7h5rs] span[data-astro-cid-nen7h5rs]{background:var(--white);height:2px;transition:transform var(--dur-2) var(--ease-out), top var(--dur-2) var(--ease-out), left var(--dur-2) var(--ease-out);position:absolute;left:0;right:0}.burger-lines[data-astro-cid-nen7h5rs] span[data-astro-cid-nen7h5rs]:first-child{top:0}.burger-lines[data-astro-cid-nen7h5rs] span[data-astro-cid-nen7h5rs]:last-child{top:10px;left:8px}html.menu-open .burger-lines[data-astro-cid-nen7h5rs] span[data-astro-cid-nen7h5rs]:first-child{top:5px;transform:rotate(45deg)}html.menu-open .burger-lines[data-astro-cid-nen7h5rs] span[data-astro-cid-nen7h5rs]:last-child{top:5px;left:0;transform:rotate(-45deg)}@media (width>=1100px){.desk-nav[data-astro-cid-nen7h5rs]{display:block}.cta[data-astro-cid-nen7h5rs]{display:inline-flex}.burger[data-astro-cid-nen7h5rs]{display:none}}.mobile-menu[data-astro-cid-nen7h5rs]{z-index:99;background:var(--carbon-900);clip-path:polygon(100% 0,100% 0,100% 100%,calc(100% + 30vh) 100%);transition:clip-path .7s var(--ease-in-out);overscroll-behavior:contain;background-image:radial-gradient(120% 60% at 100% 0,#b8111138,#0000 60%);position:fixed;inset:0;overflow-y:auto}.mobile-menu[data-astro-cid-nen7h5rs][hidden]{visibility:hidden;display:block}html.menu-open .mobile-menu[data-astro-cid-nen7h5rs]{visibility:visible;clip-path:polygon(0 0,100% 0,100% 100%,-30vh 100%)}.mm-inner[data-astro-cid-nen7h5rs]{min-height:100%;padding-top:calc(var(--header-h) + 2rem);padding-bottom:calc(2rem + env(safe-area-inset-bottom));flex-direction:column;justify-content:space-between;gap:2.5rem;display:flex}.mm-list[data-astro-cid-nen7h5rs] li[data-astro-cid-nen7h5rs]{border-bottom:1px solid var(--line);opacity:0;transition:opacity .5s ease, transform .7s var(--ease-out);transition-delay:calc(.25s + var(--i) * 50ms);transform:translateY(24px)}html.menu-open .mm-list[data-astro-cid-nen7h5rs] li[data-astro-cid-nen7h5rs]{opacity:1;transform:none}.mm-list[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{font-family:var(--font-display);text-transform:uppercase;font-variation-settings:"wdth" 112;align-items:baseline;gap:1rem;padding-block:1rem;font-size:clamp(1.7rem,7vw,2.6rem);font-style:italic;font-weight:800;line-height:1;display:flex}:lang(zh) .mm-list[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{font-family:var(--font-cjk);font-style:normal;font-weight:900}.mm-list[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs][aria-current]{color:var(--k-red-hot)}.mm-num[data-astro-cid-nen7h5rs]{color:var(--steel);letter-spacing:.1em;min-width:1.6rem;font-size:.75rem;font-style:normal;font-weight:600}.mm-foot[data-astro-cid-nen7h5rs]{justify-items:start;gap:1.5rem;display:grid}.mm-langs[data-astro-cid-nen7h5rs]{gap:1.25rem;font-size:.95rem;display:flex}.mm-langs[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{color:var(--fg-muted);align-items:center;min-height:44px;display:inline-flex}.mm-langs[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs][aria-current]{color:var(--white);text-decoration:underline;text-decoration-color:var(--k-red);text-underline-offset:6px}.mm-social[data-astro-cid-nen7h5rs]{gap:.5rem;display:flex}.mm-social[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{border:1px solid var(--line-strong);place-items:center;width:44px;height:44px;display:grid}.mm-social[data-astro-cid-nen7h5rs] svg{width:1.1rem;height:1.1rem}.site-footer[data-astro-cid-jo6i4kqk]{background:var(--carbon-900);border-top:1px solid var(--line);padding-top:clamp(3rem,6vw,6rem);padding-bottom:calc(1.5rem + env(safe-area-inset-bottom));overflow:hidden}.sign[data-astro-cid-jo6i4kqk]{border-bottom:1px solid var(--line);margin-bottom:clamp(2.5rem,5vw,4rem);padding-bottom:clamp(2rem,4vw,4rem)}.sign-line[data-astro-cid-jo6i4kqk]{color:#0000;-webkit-text-stroke:1px #ffffff47;font-size:clamp(2.6rem,8vw,7.5rem)}@media (width>=900px){.sign-line[data-astro-cid-jo6i4kqk]{white-space:nowrap}}:lang(zh) .sign-line[data-astro-cid-jo6i4kqk]{font-size:clamp(1.8rem,7vw,6rem)}.grid[data-astro-cid-jo6i4kqk]{grid-template-columns:1fr 1fr;gap:2.5rem;display:grid}.about[data-astro-cid-jo6i4kqk]{grid-column:1/-1;gap:1.25rem;max-width:34ch;display:grid}.f-logo[data-astro-cid-jo6i4kqk]{width:150px;color:var(--white);display:block}.about[data-astro-cid-jo6i4kqk] p[data-astro-cid-jo6i4kqk]{font-size:.92rem}.social[data-astro-cid-jo6i4kqk]{gap:.5rem;display:flex}.social[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]{border:1px solid var(--line-strong);width:44px;height:44px;transition:border-color var(--dur-1), background var(--dur-1);place-items:center;display:grid}.social[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]:hover{border-color:var(--k-red);background:var(--k-red)}.social[data-astro-cid-jo6i4kqk] svg{width:1.1rem;height:1.1rem}.f-title[data-astro-cid-jo6i4kqk]{font-family:var(--font-display);letter-spacing:.18em;text-transform:uppercase;color:var(--steel);margin-bottom:1rem;font-size:.75rem;font-weight:600}ul[data-astro-cid-jo6i4kqk]{gap:.35rem;display:grid}ul[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]{color:var(--fg-muted);transition:color var(--dur-1);overflow-wrap:anywhere;padding-block:.2rem;font-size:.92rem;display:inline-block}ul[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]:hover{color:var(--white)}.bottom[data-astro-cid-jo6i4kqk]{border-top:1px solid var(--line);color:var(--steel);flex-wrap:wrap;justify-content:space-between;gap:1rem;margin-top:clamp(2.5rem,5vw,4rem);padding-top:1.5rem;font-size:.8rem;display:flex}.langs[data-astro-cid-jo6i4kqk]{gap:.6rem;display:flex}.langs[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk][aria-current]{color:var(--white)}@media (width>=900px){.grid[data-astro-cid-jo6i4kqk]{grid-template-columns:1.6fr 1fr 1fr 1fr}.about[data-astro-cid-jo6i4kqk]{grid-column:auto}}