@import "https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap";
:root{--brand:265 85% 62%;--brand-light:280 90% 72%;--accent:190 85% 55%;--bg:#070b14;--bg-2:#0c111d;--surface:#141a29;--surface-2:#1e2638;--text:#eff2f7;--muted:#a5abb8;--line:#98a5be24;--line-strong:#98a5be42;--radius:16px;--radius-sm:10px;--maxw:1160px;--shadow:0 22px 50px -30px #000000b8;--shadow-lg:0 30px 70px -34px #000c;--ease-out-quart:cubic-bezier(.25, 1, .5, 1);--ease-out-expo:cubic-bezier(.16, 1, .3, 1);--font-display:"Space Grotesk", "Segoe UI", system-ui, -apple-system, sans-serif;--font-body:"Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;--space-3:clamp(14px, 2vw, 18px);--space-5:clamp(22px, 4vw, 34px);--space-7:clamp(36px, 6vw, 56px)}@supports (color:lab(0% 0 0)){:root{--bg:lab(2.97972% .168405 -4.74547);--bg-2:lab(5.14202% .337563 -8.31669);--surface:lab(9.3201% .515975 -10.8754);--surface-2:lab(15.0914% .523895 -12.7074);--text:lab(95.3254% -.18549 -3.02337);--muted:lab(69.7471% -.351578 -7.49757);--line:lab(67.314% -.352651 -14.8341/.14);--line-strong:lab(67.314% -.352651 -14.8341/.26)}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-body);color:var(--text);background:radial-gradient(70vw 55vw at 12% -10%, hsl(var(--brand) / .2), transparent 58%), radial-gradient(46vw 46vw at 102% 4%, hsl(var(--accent) / .12), transparent 55%), var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-kerning:normal;background-attachment:fixed;min-height:100vh;margin:0;font-size:16px;line-height:1.75}body:before{content:"";pointer-events:none;z-index:0;background-image:linear-gradient(#aebedf0a 1px,#0000 1px),linear-gradient(90deg,#aebedf0a 1px,#0000 1px);background-image:linear-gradient(lab(76.5362% -.332385 -18.4986/.04) 1px,#0000 1px),linear-gradient(90deg,lab(76.5362% -.332385 -18.4986/.04) 1px,#0000 1px);background-size:46px 46px;position:fixed;inset:0;-webkit-mask-image:radial-gradient(80vw 80vw at 50% 0,#000 30%,#0000 80%);mask-image:radial-gradient(80vw 80vw at 50% 0,#000 30%,#0000 80%)}a{color:hsl(var(--brand-light));transition:color .18s var(--ease-out-quart);text-decoration:none}a:hover{color:var(--text);text-decoration:underline}.wrap{max-width:var(--maxw);z-index:1;margin:0 auto;padding:0 20px;position:relative}.glass{border:1px solid var(--line);border-radius:var(--radius);-webkit-backdrop-filter:blur(12px);box-shadow:var(--shadow);background:#181f2e9e;background:lab(11.6467% .403248 -10.9039/.62);position:relative;overflow:hidden}.glass:after{content:"";pointer-events:none;background:radial-gradient(420px 220px at var(--mx,50%) var(--my,0%), hsl(var(--brand) / .14), transparent 60%);opacity:0;transition:opacity .3s var(--ease-out-quart);position:absolute;inset:0}.glass:hover:after{opacity:1}.nav{z-index:50;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);background:#070b14c7;background:lab(2.97972% .168405 -4.74547/.78);position:sticky;top:0}.nav .wrap{align-items:center;gap:18px;height:64px;display:flex}.brand{font-family:var(--font-display);letter-spacing:.2px;color:hsl(var(--brand-light));font-size:18px;font-weight:700}.brand:hover{text-decoration:none}.nav nav{flex-wrap:wrap;gap:4px;margin-left:auto;font-size:14px;display:flex}.nav nav a{color:var(--muted);border-radius:999px;padding:7px 13px;transition:background .18s,color .18s}.nav nav a:hover{color:var(--text);background:#ffffff0f;background:lab(100% 0 0/.06);text-decoration:none}.langswitch{border:1px solid var(--line);background:#ffffff0d;background:lab(100% 0 0/.05);border-radius:999px;gap:3px;margin-left:8px;padding:3px;display:inline-flex}.langswitch a{color:var(--muted);border-radius:999px;padding:5px 11px;font-size:13px;font-weight:700}.langswitch a.active{background:hsl(var(--brand));color:#fff}.langswitch a:hover{color:var(--text);text-decoration:none}.langswitch a.active:hover{color:#fff}.hero{text-align:center;padding:clamp(48px,8vw,84px) 0 clamp(28px,4vw,40px)}.hero .eyebrow{font-family:var(--font-display);color:hsl(var(--brand-light));letter-spacing:1.6px;text-transform:uppercase;border:1px solid hsl(var(--brand) / .4);background:hsl(var(--brand) / .1);border-radius:999px;margin-bottom:18px;padding:6px 15px;font-size:12px;font-weight:600;display:inline-block}.hero h1{font-family:var(--font-display);letter-spacing:-.5px;background:linear-gradient(180deg, #fff 30%, hsl(var(--brand-light)));color:#0000;-webkit-background-clip:text;background-clip:text;margin:8px 0 14px;font-size:clamp(2.4rem,6vw,4.1rem);font-weight:700;line-height:1.05}.hero p{color:var(--muted);max-width:640px;margin:0 auto 22px;font-size:17px}.stats{flex-wrap:wrap;justify-content:center;gap:12px;margin:26px 0 8px;display:flex}.stat{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);flex-direction:column;align-items:center;gap:2px;min-width:132px;padding:12px 18px;display:flex}.stat .stat-ico{margin-bottom:2px;font-size:18px;line-height:1}.stat b{font-family:var(--font-display);color:hsl(var(--brand-light));font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;display:block}.stat span{color:var(--muted);font-size:12px}.cta{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:8px;display:inline-flex}.btn{font-family:var(--font-display);cursor:pointer;transition:transform .15s var(--ease-out-quart), box-shadow .25s, background .2s;border:1px solid #0000;border-radius:999px;padding:12px 24px;font-size:15px;font-weight:600}.btn:hover{text-decoration:none;transform:translateY(-2px)}.btn.primary{background:linear-gradient(180deg, hsl(var(--brand-light)), hsl(var(--brand)));color:#0b0712;box-shadow:0 12px 30px -12px hsl(var(--brand) / .85)}.btn.ghost{border-color:var(--line-strong);color:var(--text);background:#ffffff0a;background:lab(100% 0 0/.04)}.btn.ghost:hover{border-color:hsl(var(--brand) / .5)}.grid{gap:clamp(14px,2vw,20px);display:grid}.grid.cols-2{grid-template-columns:repeat(2,1fr)}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-4{grid-template-columns:repeat(4,1fr)}@media (max-width:880px){.grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}}@media (max-width:620px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}.card{transition:transform .2s var(--ease-out-quart), border-color .25s, box-shadow .25s;border-top:3px solid hsl(var(--brand) / .55);padding:22px}.card:hover{border-color:hsl(var(--brand) / .5);box-shadow:var(--shadow-lg);text-decoration:none;transform:translateY(-4px)}.card h3,.card h4{font-family:var(--font-display);color:var(--text);letter-spacing:-.2px;margin:6px 0 10px;font-weight:600}.card p{color:var(--muted);margin:0;font-size:14px;line-height:1.65}.card p strong{color:var(--text);font-weight:600}.card .num{background:hsl(var(--brand) / .16);width:28px;height:28px;color:hsl(var(--brand-light));font-family:var(--font-display);border-radius:999px;place-items:center;margin-bottom:8px;font-weight:700;display:inline-grid}.chip{font-family:var(--font-display);letter-spacing:.3px;background:hsl(var(--brand) / .14);color:hsl(var(--brand-light));border:1px solid hsl(var(--brand) / .3);border-radius:999px;margin:3px 4px 0 0;padding:3px 10px;font-size:11px;font-weight:600;display:inline-block}.section{padding:var(--space-7) 0}.section h2{font-family:var(--font-display);letter-spacing:-.3px;align-items:center;gap:12px;margin:0 0 18px;font-size:clamp(1.6rem,3vw,2rem);font-weight:700;display:flex}.section h2:before{content:"";background:linear-gradient(180deg, hsl(var(--brand-light)), hsl(var(--brand)));border-radius:4px;flex:none;width:6px;height:28px;display:inline-block}.prose{max-width:70ch;margin:0 auto}.prose h1{font-family:var(--font-display);letter-spacing:-.4px;margin:0 0 14px;font-size:clamp(2rem,4vw,2.6rem)}.prose h2{font-family:var(--font-display);border-left:3px solid hsl(var(--brand));letter-spacing:-.2px;margin:36px 0 12px;padding-left:14px;font-size:clamp(1.4rem,2.6vw,1.7rem)}.prose h3{color:hsl(var(--brand-light));margin:24px 0 8px;font-size:1.15rem;font-weight:600}.prose p{color:var(--text);margin:14px 0}.prose ul,.prose ol{color:var(--muted);padding-left:22px}.prose li{margin:7px 0}.prose li::marker{color:hsl(var(--brand))}.prose table{border-collapse:collapse;border-radius:12px;width:100%;margin:18px 0;font-size:14px;overflow:hidden}.prose th,.prose td{border:1px solid var(--line);text-align:left;padding:11px 13px}.prose thead th{background:hsl(var(--brand) / .14);color:hsl(var(--brand-light));font-family:var(--font-display);font-weight:600}.prose tbody tr:nth-child(2n){background:#ffffff06;background:lab(100% 0 0/.025)}.breadcrumb{color:var(--muted);padding:16px 0 0;font-size:13px}blockquote{border-left:3px solid hsl(var(--brand))}.source{color:var(--muted);border-top:1px dashed var(--line);margin-top:20px;padding-top:12px;font-size:12.5px;font-style:italic}.source b{color:hsl(var(--brand-light));font-style:normal}.faq{max-width:70ch;margin:10px auto 0}.faq details{margin-bottom:10px;padding:14px 18px;transition:border-color .2s}.faq details[open]{border-color:hsl(var(--brand) / .4)}.faq summary{cursor:pointer;font-family:var(--font-display);color:var(--text);font-weight:600;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";float:right;color:hsl(var(--brand-light));transition:transform .2s var(--ease-out-quart);font-size:20px;line-height:1}.faq details[open] summary:after{content:"−"}.faq details>div{color:var(--muted);margin-top:10px}.callout{border:1px solid var(--line);border-left:4px solid hsl(var(--brand));background:hsl(var(--brand) / .07);border-radius:12px;gap:12px;margin:18px 0;padding:14px 18px;display:flex}.callout .ico{font-size:20px;line-height:1.4}.callout .ct{color:var(--text)}.callout .ct b{color:hsl(var(--brand-light))}.callout.tip{background:#4ac06c1a;background:lab(69.5359% -48.2928 31.8219/.1);border-left-color:#4ac06c;border-left-color:lab(69.5359% -48.2928 31.8219)}.callout.warn{background:#e99b2a1a;background:lab(70.6914% 24.1602 66.1517/.1);border-left-color:#e99b2a;border-left-color:lab(70.6914% 24.1602 66.1517)}.facts{grid-template-columns:repeat(2,1fr);gap:10px 22px;margin:18px 0;display:grid}.facts .row{border-bottom:1px solid var(--line);justify-content:space-between;gap:12px;padding:9px 0;font-size:14px;display:flex}.facts .row .k{color:var(--muted)}.facts .row .v{color:var(--text);text-align:right;font-weight:600}@media (max-width:620px){.facts{grid-template-columns:1fr}}.badge{font-family:var(--font-display);letter-spacing:.5px;text-transform:uppercase;background:hsl(var(--brand) / .16);color:hsl(var(--brand-light));border:1px solid hsl(var(--brand) / .4);border-radius:999px;padding:3px 9px;font-size:11px;font-weight:700;display:inline-block}.badge.s{color:#67d283;color:lab(76.3874% -45.0956 29.5179);background:#4ac06c2e;background:lab(69.5359% -48.2928 31.8219/.18);border-color:#4ac06c80;border-color:lab(69.5359% -48.2928 31.8219/.5)}.badge.warn{color:#f7ac4d;color:lab(76.5561% 21.8102 58.7346);background:#e99b2a29;background:lab(70.6914% 24.1602 66.1517/.16);border-color:#e99b2a80;border-color:lab(70.6914% 24.1602 66.1517/.5)}.ad{margin:26px 0}.ad-label{font-family:var(--font-display);letter-spacing:1px;text-transform:uppercase;color:var(--muted);margin-bottom:6px;font-size:11px;display:block}.ad-slot{border:1px dashed var(--line-strong);min-height:100px;color:var(--muted);background:#ffffff05;background:lab(100% 0 0/.02);border-radius:12px;place-items:center;font-size:13px;display:grid}.toc{align-self:start;padding:16px 18px;font-size:14px;position:sticky;top:82px}.toc a{color:var(--muted);padding:4px 0;transition:color .15s;display:block}.toc a:hover{color:hsl(var(--brand-light));text-decoration:none}.layout-2col{grid-template-columns:1fr 240px;align-items:start;gap:28px;display:grid}@media (max-width:860px){.layout-2col{grid-template-columns:1fr}.toc{display:none}}.footer{border-top:1px solid var(--line);color:var(--muted);margin-top:56px;padding:36px 0 28px;font-size:14px}.footer .cols{flex-wrap:wrap;gap:44px;display:flex}.footer h4{font-family:var(--font-display);color:var(--text);margin:0 0 10px;font-size:15px;font-weight:600}.footer a{color:var(--muted);padding:3px 0;display:block}.footer a:hover{color:hsl(var(--brand-light))}a:focus-visible,.btn:focus-visible,summary:focus-visible,.langswitch a:focus-visible{outline:2px solid hsl(var(--brand-light));outline-offset:3px;border-radius:6px;text-decoration:none}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.js .reveal{opacity:0;transition:opacity .6s var(--ease-out-expo), transform .6s var(--ease-out-expo);will-change:opacity, transform;transform:translateY(16px)}.js .reveal.in{opacity:1;transform:none}.article-meta{border-top:1px solid var(--line);color:var(--muted);flex-direction:column;gap:8px;margin-top:30px;padding-top:18px;font-size:13.5px;display:flex}.article-meta .byline{font-family:var(--font-display);letter-spacing:.2px}.article-meta .byline-label{color:var(--muted);font-weight:500}.article-meta .byline strong{color:hsl(var(--brand-light));font-weight:600}.article-meta .updated time{color:var(--text);font-variant-numeric:tabular-nums}.article-meta .sources{margin-top:4px}.article-meta .sources strong{color:var(--text);font-family:var(--font-display);text-transform:uppercase;letter-spacing:.6px;margin-bottom:6px;font-size:12px;display:block}.article-meta .sources ul{margin:0;padding-left:18px}.article-meta .sources li{color:var(--muted);margin:3px 0}