:root{color-scheme:dark;--bg:#07090d;--bg-1:#0d1117;--bg-2:#121821;--bg-3:#19212c;--line:#ffffff12;--line-2:#ffffff1f;--text:#eef1f5;--text-2:#a3abb9;--text-3:#6b7383;--accent:#3ee8b0;--accent-2:#9ff5d8;--accent-soft:#3ee8b01a;--accent-line:#3ee8b052;--accent-ink:#02130d;--logo-l:#f0b90b;--logo-r:#69c842;--logo-x:#adc027;--warn:#f4bf55;--warn-soft:#f4bf5517;--dot:#ffffff0f;--shadow-lg:0 30px 80px -20px #000000b3, 0 0 0 1px var(--line);--font-sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;--font-mono:ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;--r:14px;--r-sm:8px;--max:1200px;--prose:700px;--ease:cubic-bezier(.2, .7, .1, 1);--header:64px}:root:lang(zh-Hant){--font-sans:-apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Segoe UI", sans-serif}@media (prefers-color-scheme:light){:root{color-scheme:light;--bg:#f6f5f1;--bg-1:#fff;--bg-2:#f0eee8;--bg-3:#e5e2d9;--line:#14161a17;--line-2:#14161a26;--text:#121418;--text-2:#4e5562;--text-3:#80868f;--accent:#058a5e;--accent-2:#046b49;--accent-soft:#058a5e14;--accent-line:#058a5e4d;--accent-ink:#fff;--logo-l:#f0b90b;--logo-r:#69c842;--logo-x:#adc027;--warn:#9a6200;--warn-soft:#f4bf5529;--dot:#14161a14;--shadow-lg:0 30px 70px -24px #1e1e1438, 0 0 0 1px var(--line)}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:calc(var(--header) + 16px)}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:16px;line-height:1.8}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}h1,h2,h3{letter-spacing:-.015em;text-wrap:balance;margin:0;font-weight:700;line-height:1.25}p{text-wrap:pretty;margin:0 0 1em}code,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}::selection{background:var(--accent);color:var(--accent-ink)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}[hidden]{display:none!important}.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:16px}@media (width>=720px){.wrap{padding-inline:32px}}.skip{z-index:50;background:var(--accent);color:var(--accent-ink);border-radius:var(--r-sm);padding:6px 12px;position:absolute;top:8px;left:-999px}.skip:focus{left:8px}.label{font-family:var(--font-mono);letter-spacing:.12em;color:var(--text-3);align-items:center;gap:10px;font-size:12px;display:inline-flex}.label:before{content:"";opacity:.6;background:currentColor;width:18px;height:1px}.chip{border:1px solid var(--line-2);min-height:30px;color:var(--text-2);background:color-mix(in srgb, var(--bg-1) 70%, transparent);border-radius:999px;align-items:center;gap:8px;padding:2px 12px;font-size:13px;display:inline-flex}.chip i{background:var(--accent);width:6px;height:6px;box-shadow:0 0 0 3px var(--accent-soft);border-radius:50%;flex:none}.stamp{font-family:var(--font-mono);color:var(--text-3);white-space:nowrap;align-items:center;gap:6px;font-size:12px;display:inline-flex}.stamp b{color:var(--text);font-weight:600}.stamp.ok b{color:var(--accent)}.site-header{z-index:30;height:var(--header);transition:background .3s var(--ease), border-color .3s;border-bottom:1px solid #0000;position:sticky;top:0}.site-header.is-scrolled,.menu-open .site-header{background:color-mix(in srgb, var(--bg) 92%, transparent);-webkit-backdrop-filter:saturate(150%)blur(14px);border-color:var(--line)}.header-row{align-items:center;gap:20px;height:100%;display:flex}.brand{color:var(--text);align-items:center;gap:10px;display:inline-flex}.brand .logo polygon{transition:transform .5s var(--ease)}.brand:hover .logo polygon:first-child{transform:translate(-1px)}.brand:hover .logo polygon:nth-child(2){transform:translate(1px)}.brand .wordmark{margin-left:2px;display:block}.brand small{letter-spacing:0;color:var(--text-3);border-left:1px solid var(--line-2);padding-left:12px;font-size:12px;font-weight:500;display:none}@media (width>=720px){.brand small{display:inline}}.main-nav{gap:2px;margin-left:auto;display:none}.main-nav a{color:var(--text-2);border-radius:999px;padding:8px 12px;font-size:14.5px;transition:color .2s,background .2s;position:relative}.main-nav a:hover{color:var(--text);background:var(--bg-2)}.main-nav a[aria-current]{color:var(--text)}.main-nav a[aria-current]:after{content:"";background:var(--accent);border-radius:50%;width:4px;height:4px;margin-left:-2px;position:absolute;bottom:1px;left:50%}.header-tools{align-items:center;gap:8px;margin-left:auto;display:flex}.lang-switch{border:1px solid var(--line-2);border-radius:999px;padding:3px;font-size:12.5px;display:inline-flex}.lang-switch a{color:var(--text-3);border-radius:999px;padding:2px 9px;transition:color .2s,background .2s}.lang-switch a:hover{color:var(--text)}.lang-switch a[aria-current]{background:var(--bg-3);color:var(--text)}.menu-btn{border:1px solid var(--line-2);width:40px;height:40px;color:var(--text);cursor:pointer;background:0 0;border-radius:999px;place-items:center;display:inline-grid}.menu-btn span,.menu-btn span:before{width:16px;height:1.5px;transition:transform .35s var(--ease);background:currentColor;display:block}.menu-btn span{position:relative;transform:translateY(-3px)}.menu-btn span:before{content:"";position:absolute;top:6px}.menu-open .menu-btn span{transform:rotate(45deg)}.menu-open .menu-btn span:before{transform:translateY(-6px)rotate(-90deg)}.mobile-nav{inset:var(--header) 0 0 0;z-index:29;background:var(--bg);opacity:0;visibility:hidden;transition:opacity .35s var(--ease), transform .35s var(--ease), visibility .35s;align-content:start;padding:16px 16px 40px;display:grid;position:fixed;transform:translateY(-8px)}.mobile-nav a{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:18px 4px;font-size:22px;font-weight:700;display:flex}.mobile-nav a:after{content:"→";color:var(--text-3);font-weight:400}.menu-open .mobile-nav{opacity:1;visibility:visible;transform:none}html.menu-open{overflow:hidden}@media (width>=960px){.main-nav{display:flex}.header-tools{margin-left:8px}.menu-btn,.mobile-nav{display:none}}.btn{min-height:48px;font:inherit;cursor:pointer;transition:transform .25s var(--ease), background .25s, border-color .25s, box-shadow .25s;white-space:nowrap;border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:10px;padding:0 24px;font-size:15px;font-weight:600;display:inline-flex;position:relative}.btn .arr{transition:transform .3s var(--ease);display:inline-block}.btn:hover .arr{transform:translate(4px)}.btn:active{transform:scale(.97)}.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 10px 28px -12px var(--accent)}.btn-primary:hover{background:var(--accent-2);box-shadow:0 14px 34px -12px var(--accent)}.btn-ghost{border-color:var(--line-2);color:var(--text)}.btn-ghost:hover{border-color:var(--text-3);background:var(--bg-2)}.link-arrow{color:var(--accent);white-space:nowrap;align-items:center;gap:8px;font-size:14.5px;font-weight:600;display:inline-flex}.link-arrow:after{content:"→";transition:transform .3s var(--ease)}.link-arrow:hover:after{transform:translate(4px)}.hero{margin-top:calc(var(--header) * -1);padding-top:var(--header);isolation:isolate;border-bottom:1px solid var(--line);position:relative;overflow:hidden}.hero:before{content:"";z-index:-2;background-image:radial-gradient(var(--dot) 1px, transparent 1.2px);background-size:22px 22px;position:absolute;inset:0;mask-image:radial-gradient(90% 80% at 35% 30%,#000 25%,#0000 78%)}.hero-glow{z-index:-1;background:radial-gradient(circle, var(--accent-soft), transparent 62%);pointer-events:none;border-radius:50%;width:760px;height:760px;position:absolute;top:-280px;right:-240px}.hero-mark{z-index:-1;pointer-events:none;width:600px;height:600px;color:var(--line-2);position:absolute;bottom:-200px;right:-140px}@media (prefers-reduced-motion:no-preference){.hero-mark{animation:120s linear infinite spin}}@keyframes spin{to{transform:rotate(360deg)}}.hero-grid{gap:48px;padding-block:48px 64px;display:grid}@media (width>=1000px){.hero-grid{grid-template-columns:minmax(0,1.2fr) minmax(0,.9fr);align-items:center;gap:72px;padding-block:96px 112px}}.hero h1{letter-spacing:-.035em;margin:24px 0;font-size:clamp(34px,9vw,60px);font-weight:800;line-height:1.14}@media (width>=1000px){.hero h1{font-size:clamp(44px,4.4vw,62px)}.hero h1 .line{white-space:nowrap}}.hero h1 .hl{color:var(--accent)}.hero h1 .line{display:block}.hero-lead{color:var(--text-2);max-width:32em;margin:0;font-size:clamp(16px,1.6vw,18.5px);line-height:1.85}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:32px;display:flex}.hero-meta{border-top:1px solid var(--line);flex-wrap:wrap;gap:8px 24px;max-width:32em;margin-top:40px;padding-top:20px;display:flex}.anim .rise{opacity:0;animation:rise .9s var(--ease) forwards;animation-delay:calc(var(--i,0) * 90ms + 60ms);transform:translateY(18px)}@keyframes rise{to{opacity:1;transform:none}}.anim .rise-text{animation:rise-text 1s var(--ease) both;animation-delay:calc(var(--i,0) * 90ms)}@keyframes rise-text{0%{filter:blur(6px);transform:translateY(12px)}to{filter:none;transform:none}}.reveal-on .reveal{transition:opacity .9s var(--ease), transform .9s var(--ease);transition-delay:calc(var(--i,0) * 70ms)}.reveal-on .reveal:not(.in){opacity:0;transform:translateY(24px)}.passes{gap:16px;display:grid}.pass{background:var(--bg-1);border:1px solid var(--line-2);border-radius:var(--r);box-shadow:var(--shadow-lg);transition:transform .5s var(--ease), border-color .3s;grid-template-columns:minmax(0,1fr) auto;display:grid;position:relative}.pass:hover{border-color:var(--accent-line);transform:translateY(-3px)}@media (width>=1000px){.hero .pass:nth-child(2){margin-left:40px}.hero .pass:first-child{margin-right:40px}}.pass-main{gap:14px;min-width:0;padding:20px 20px 18px;display:grid}.pass-head{align-items:center;gap:12px;display:flex}.pass-head strong{font-size:18px}.pass-head span{font-family:var(--font-mono);color:var(--text-3);letter-spacing:.08em;font-size:12px}.ex-mark{width:34px;height:34px;font-family:var(--font-mono);color:var(--accent-ink);background:var(--accent);border-radius:10px;flex:none;place-items:center;font-size:14px;font-weight:700;display:grid}.ex-mark.okx{background:var(--text);color:var(--bg)}.pass-code{align-items:baseline;gap:10px;min-width:0;display:flex}.pass-code>span{color:var(--text-3);flex:none;font-size:12.5px}.pass-code code{letter-spacing:.1em;text-overflow:ellipsis;font-size:21px;font-weight:600;overflow:hidden}.pass-perk{color:var(--text-2);margin:0;font-size:13.5px;line-height:1.7}.pass-stub{border-left:1.5px dashed var(--line-2);place-items:center;width:88px;display:grid;position:relative}.pass-stub:before,.pass-stub:after{content:"";background:var(--bg);border:1px solid var(--line-2);border-radius:50%;width:18px;height:18px;position:absolute;left:-10px}.pass-stub:before{clip-path:inset(50% 0 0);top:-10px}.pass-stub:after{clip-path:inset(0 0 50%);bottom:-10px}.copy-btn{color:var(--text-2);font:inherit;cursor:pointer;border-radius:var(--r-sm);background:0 0;border:0;justify-items:center;gap:6px;padding:12px 10px;font-size:12px;transition:color .2s,background .2s;display:grid}.copy-btn svg{width:22px;height:22px;transition:transform .3s var(--ease)}.copy-btn:hover{color:var(--text);background:var(--bg-2)}.copy-btn:hover svg{transform:translateY(-2px)}.copy-btn[data-copied]{color:var(--accent)}.pass-cta{border-top:1px solid var(--line);border-radius:0 0 var(--r) var(--r);background:var(--bg-2);grid-column:1/-1;justify-content:space-between;align-items:center;gap:12px;padding:15px 20px;font-size:14.5px;font-weight:600;transition:background .25s,color .25s;display:flex}.pass-cta:hover{background:var(--accent);color:var(--accent-ink)}.pass-cta .arr{transition:transform .3s var(--ease)}.pass-cta:hover .arr{transform:translate(4px)}.invite-alt{border:1px solid color-mix(in srgb, var(--warn) 35%, transparent);background:var(--warn-soft);border-radius:var(--r);color:var(--text-2);margin:0;padding:16px 18px;font-size:14px;line-height:1.75}html.geo-restricted [data-invite]{display:none!important}html.geo-restricted [data-invite-alt]{display:block!important}.ticker{background:var(--bg-1);border-bottom:1px solid var(--line);overflow:hidden;mask-image:linear-gradient(90deg,#0000,#000 6% 94%,#0000)}.ticker-track{width:max-content;display:flex}@media (prefers-reduced-motion:no-preference){.ticker-track{animation:70s linear infinite marquee}.ticker:hover .ticker-track{animation-play-state:paused}}@keyframes marquee{to{transform:translate(-50%)}}.ticker a{color:var(--text-2);white-space:nowrap;align-items:center;gap:12px;padding:18px 28px;font-size:15px;transition:color .2s;display:inline-flex}.ticker a:before{content:"问";border:1px solid var(--accent-line);width:22px;height:22px;color:var(--accent);border-radius:6px;place-items:center;font-size:11px;display:grid}.ticker a:hover{color:var(--text)}.section{padding-block:96px}.section+.section{padding-top:0}.section-head{gap:14px;margin-bottom:40px;display:grid}@media (width>=900px){.section-head.split-head{grid-template-columns:1fr auto;align-items:end;gap:32px}}.section-head h2{letter-spacing:-.03em;font-size:clamp(26px,3.6vw,40px)}.section-head p{color:var(--text-2);max-width:38em;margin:0}.path{background:var(--line);border:1px solid var(--line);border-radius:var(--r);counter-reset:step;gap:1px;display:grid;overflow:hidden}@media (width>=720px){.path{grid-template-columns:repeat(2,1fr)}}@media (width>=1100px){.path{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}}.path a{background:var(--bg-1);counter-increment:step;isolation:isolate;align-content:start;gap:10px;min-height:220px;padding:28px 24px 56px;transition:background .3s;display:grid;position:relative;overflow:hidden}.path a:before{content:counter(step, decimal-leading-zero);font-family:var(--font-mono);color:var(--accent);font-size:13px}.path a:after{content:"→";color:var(--text-3);transition:transform .3s var(--ease), color .3s;position:absolute;bottom:22px;right:24px}.path a:hover{background:var(--bg-2)}.path a:hover:after{color:var(--accent);transform:translate(4px)}.path strong{letter-spacing:-.01em;font-size:21px}.path span{color:var(--text-2);font-size:14.5px;line-height:1.7}.grid{gap:16px;display:grid}@media (width>=640px){.grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}@media (width>=1000px){.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}.card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r);transition:border-color .3s, transform .45s var(--ease);isolation:isolate;flex-direction:column;gap:10px;padding:24px;display:flex;position:relative;overflow:hidden}.card:before{content:"";z-index:-1;opacity:0;background:radial-gradient(380px circle at var(--mx,50%) var(--my,50%), var(--accent-soft), transparent 50%);transition:opacity .4s;position:absolute;inset:0}a.card:hover{border-color:var(--line-2);transform:translateY(-3px)}a.card:hover:before{opacity:1}.card h3{font-size:18px;line-height:1.45}.card p{color:var(--text-2);margin:0;font-size:14.5px;line-height:1.75}.card-foot{justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:16px;display:flex}.card-foot .go{color:var(--text-3);transition:transform .3s var(--ease), color .3s}a.card:hover .go{color:var(--accent);transform:translate(4px)}.card-num{font-family:var(--font-mono);letter-spacing:-.05em;font-size:48px;font-weight:500;line-height:1}.card-num small{letter-spacing:0;color:var(--text-3);font-size:13px;font-family:var(--font-sans);margin-left:6px}.topic{min-height:260px}.topic h3{margin-top:auto;font-size:22px}.rows{border-top:1px solid var(--line)}.row{border-bottom:1px solid var(--line);transition:padding .45s var(--ease);gap:6px 32px;padding:24px 0;display:grid}@media (width>=860px){.row{grid-template-columns:150px minmax(0,1fr) 24px;align-items:baseline}}@media (hover:hover){.row:hover{padding-left:12px}}.row strong{font-size:18px;line-height:1.5;transition:color .2s}.row:hover strong{color:var(--accent)}.row p{color:var(--text-2);max-width:46em;margin:0;font-size:14.5px;line-height:1.75}@media (width>=860px){.row p{grid-column:2}}.row .go{color:var(--text-3);transition:transform .3s var(--ease), color .3s;display:none}@media (width>=860px){.row .go{grid-area:1/3;display:block}}.row:hover .go{color:var(--accent);transform:translate(4px)}.split{gap:32px;display:grid}@media (width>=1000px){.split{grid-template-columns:320px minmax(0,1fr);gap:72px}.split>:first-child{top:calc(var(--header) + 32px);align-self:start;position:sticky}}.split h2{letter-spacing:-.03em;margin:16px 0 14px;font-size:clamp(26px,3.4vw,38px)}.split p{color:var(--text-2)}.principles{border-top:1px solid var(--line);display:grid}@media (width>=860px){.principles{grid-template-columns:repeat(3,1fr)}}.principles>div{border-bottom:1px solid var(--line);padding:32px 0}@media (width>=860px){.principles>div{border-bottom:0;padding:40px 32px 40px 0}.principles>div+div{border-left:1px solid var(--line);padding-left:32px}}.principles strong{margin:16px 0 8px;font-size:19px;display:block}.principles p{color:var(--text-2);margin:0;font-size:14.5px}.page-head{border-bottom:1px solid var(--line);isolation:isolate;padding-block:36px 44px;position:relative;overflow:hidden}.page-head:before{content:"";z-index:-1;background-image:radial-gradient(var(--dot) 1px, transparent 1.2px);background-size:22px 22px;position:absolute;inset:0;mask-image:linear-gradient(#000,#0000 95%)}@media (width>=900px){.page-head{padding-block:48px 64px}}.crumbs ol{color:var(--text-3);flex-wrap:wrap;gap:4px 8px;margin:0 0 32px;padding:0;font-size:13px;list-style:none;display:flex}.crumbs li+li:before{content:"/";opacity:.6;margin-right:8px}.crumbs a:hover{color:var(--text)}@media (width<=719px){.crumbs li:last-child{text-overflow:ellipsis;white-space:nowrap;flex:1 1 0;min-width:0;overflow:hidden}}.page-head h1{letter-spacing:-.035em;max-width:17em;margin:18px 0;font-size:clamp(30px,5vw,54px);line-height:1.16}.page-head .lead{color:var(--text-2);max-width:40em;margin:0;font-size:clamp(16px,1.5vw,18.5px);line-height:1.85}.page-meta{flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:28px;display:flex}.page-meta a{font-family:var(--font-mono);color:var(--text-3);text-underline-offset:3px;font-size:12px;text-decoration:underline}.page-meta a:hover{color:var(--text)}.hub-about{max-width:64em;color:var(--text-2);gap:24px;margin-top:32px;font-size:15.5px;line-height:1.9;display:grid}@media (width>=900px){.hub-about{grid-template-columns:1fr 1fr;gap:40px}}.hub-about p{margin:0}.article-grid{gap:56px;padding-block:48px 96px;display:grid}.article-grid>*,.split>*,.grid>*{min-width:0}@media (width>=1100px){.article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:80px}}.side{align-content:start;gap:20px;display:grid}@media (width>=1100px){.side-inner{top:calc(var(--header) + 24px);gap:20px;display:grid;position:sticky}}.side-inner{gap:16px;display:grid}.answer{border:1px solid var(--accent-line);background:linear-gradient(135deg, var(--accent-soft), transparent 75%);border-radius:var(--r);max-width:var(--prose);margin-bottom:40px;padding:22px 24px}.answer .label{color:var(--accent);margin-bottom:10px;display:flex}.answer p{margin:0;font-size:17px;line-height:1.9}.toc{border:1px solid var(--line);border-radius:var(--r);background:var(--bg-1);padding:18px 16px 14px}.toc .label{margin:0 0 10px 2px;display:flex}.toc ol{gap:2px;margin:0;padding:0;list-style:none;display:grid}.toc a{border-left:2px solid var(--line);color:var(--text-2);padding:6px 10px;font-size:13.5px;line-height:1.55;transition:color .2s,border-color .2s,background .2s;display:block}.toc a:hover{color:var(--text)}.toc a.active{color:var(--text);border-color:var(--accent);background:var(--accent-soft)}.side .toc{display:none}@media (width>=1100px){.side .toc{display:block}}.toc-mobile{max-width:var(--prose);margin-bottom:36px}.toc-mobile summary{cursor:pointer;justify-content:space-between;align-items:center;list-style:none;display:flex}.toc-mobile summary::-webkit-details-marker{display:none}.toc-mobile summary:after{content:"+";font-family:var(--font-mono);color:var(--text-3);transition:transform .3s var(--ease)}.toc-mobile[open] summary:after{transform:rotate(45deg)}.toc-mobile ol{margin-top:12px}@media (width>=1100px){.toc-mobile{display:none}}.progress{z-index:40;background:var(--accent);transform-origin:0;height:2px;transform:scaleX(var(--p,0));pointer-events:none;position:fixed;top:0;left:0;right:0}.end-cta{max-width:var(--prose);margin-top:64px}.end-cta h2{letter-spacing:-.02em;margin-bottom:18px;font-size:22px}@media (width>=1100px){.end-cta{display:none}}.prose{max-width:var(--prose);font-size:17px;line-height:1.95}.prose>:first-child{margin-top:0}.prose h2{letter-spacing:-.025em;margin:2.4em 0 .8em;font-size:clamp(22px,2.6vw,27px);line-height:1.35}.prose h3{margin:1.8em 0 .6em;font-size:19px}.prose p{margin:0 0 1.2em}.prose a{color:var(--accent);transition:background-size .35s var(--ease);background:linear-gradient(currentColor,currentColor) 0 100%/100% 1px no-repeat}.prose a:hover{background-position:100% 100%;background-size:0 1px}.prose ul,.prose ol{margin:0 0 1.4em;padding-left:1.3em}.prose li{margin:.45em 0;padding-left:.2em}.prose li::marker{color:var(--accent);font-family:var(--font-mono);font-size:.9em}.prose strong{font-weight:650}.prose blockquote{border-left:2px solid var(--warn);background:var(--warn-soft);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-2);margin:1.8em 0;padding:16px 22px;font-size:15.5px;line-height:1.85}.prose blockquote p:last-child{margin:0}.prose code{background:var(--bg-2);border:1px solid var(--line);border-radius:5px;padding:2px 7px;font-size:.86em}.prose hr{border:0;border-top:1px solid var(--line);margin:3em 0}.table-wrap{border:1px solid var(--line);border-radius:var(--r-sm);-webkit-overflow-scrolling:touch;margin:1.8em 0;overflow-x:auto}.prose table{border-collapse:collapse;width:100%;font-size:14.5px;line-height:1.7}.prose th,.prose td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;min-width:110px;padding:12px 14px}.prose tr:last-child td{border-bottom:0}.prose th{background:var(--bg-2);white-space:nowrap;font-size:13.5px;font-weight:600}.shot{margin:2.4em 0}.shot:before{content:attr(data-host);border:1px solid var(--line-2);border-radius:var(--r-sm) var(--r-sm) 0 0;height:34px;font-family:var(--font-mono);color:var(--text-3);background-color:var(--bg-2);background-image:radial-gradient(circle, var(--line-2) 4px, transparent 4.5px), radial-gradient(circle, var(--line-2) 4px, transparent 4.5px), radial-gradient(circle, var(--line-2) 4px, transparent 4.5px);background-position:14px,30px,46px;background-repeat:no-repeat;background-size:12px 12px;border-bottom:0;align-items:center;padding:0 14px 0 64px;font-size:12px;display:flex}.shot img{border:1px solid var(--line-2);border-radius:0 0 var(--r-sm) var(--r-sm);background:var(--bg-2);width:100%}.shot figcaption{color:var(--text-3);margin-top:10px;font-size:13px;line-height:1.65}.shot-pending div{aspect-ratio:16/9;border:1.5px dashed var(--warn);border-radius:0 0 var(--r-sm) var(--r-sm);color:var(--warn);background:var(--warn-soft);place-items:center;font-size:14px;display:grid}.faq{max-width:var(--prose);margin-top:72px}.faq h2{letter-spacing:-.025em;margin-bottom:8px;font-size:clamp(22px,2.6vw,27px)}.faq details{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;grid-template-columns:1fr 24px;gap:16px;padding:20px 0;font-size:16.5px;font-weight:600;line-height:1.55;list-style:none;transition:color .2s;display:grid}.faq summary:hover{color:var(--accent)}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font-family:var(--font-mono);color:var(--text-3);transition:transform .35s var(--ease), color .2s;justify-self:end;font-size:18px;font-weight:400}.faq details[open] summary:after{color:var(--accent);transform:rotate(45deg)}.faq details p{color:var(--text-2);margin:0 0 22px;padding-right:40px;line-height:1.9}.sources{max-width:var(--prose);margin-top:48px;font-size:14px}.sources .label{margin-bottom:12px;display:flex}.sources ol{color:var(--text-3);gap:6px;margin:0;padding-left:1.3em;display:grid}.sources a{color:var(--text-2);text-underline-offset:3px;text-decoration:underline}.sources a:hover{color:var(--accent)}.related{margin-top:72px}.related .label{margin-bottom:18px;display:flex}.steps{counter-reset:s;gap:12px;list-style:none;display:grid;margin:0 0 2em!important;padding:0!important}.steps li{counter-increment:s;border:1px solid var(--line);border-radius:var(--r);background:var(--bg-1);grid-template-columns:40px 1fr;gap:14px;padding:18px 20px;display:grid;margin:0!important}.steps li:before{content:counter(s, decimal-leading-zero);font-family:var(--font-mono);color:var(--accent);padding-top:3px;font-size:14px;font-weight:600}.steps strong{margin-bottom:2px;display:block}.steps span{color:var(--text-2);font-size:14.5px;line-height:1.75}.note{border:1px solid var(--line);border-radius:var(--r);background:var(--bg-1);color:var(--text-2);padding:18px 20px;font-size:13.5px;line-height:1.8}.note .label{color:var(--warn);margin-bottom:8px;display:flex}.note p{margin:0}.banner{border:1px solid var(--line-2);border-radius:var(--r);background:var(--bg-1);color:var(--text-2);max-width:var(--prose);margin:28px 0 0;padding:16px 20px;font-size:14.5px;line-height:1.8}.banner strong{color:var(--text);margin-right:8px}.banner a{color:var(--accent)}.site-footer{border-top:1px solid var(--line);background:var(--bg-1);margin-top:32px;position:relative;overflow:hidden}.footer-top{gap:40px;padding-block:64px 48px;display:grid}@media (width>=900px){.footer-top{grid-template-columns:1.3fr repeat(2,.8fr) 1.2fr;gap:48px}}.footer-top h2{font-family:var(--font-mono);letter-spacing:.12em;color:var(--text-3);margin-bottom:16px;font-size:12px;font-weight:500}.footer-top ul{gap:10px;margin:0;padding:0;font-size:14.5px;list-style:none;display:grid}.footer-top ul a{color:var(--text-2);transition:color .2s}.footer-top ul a:hover{color:var(--text)}.footer-about p{color:var(--text-2);max-width:26em;margin:16px 0 0;font-size:14.5px}.footer-archive{border:1px solid var(--line-2);border-radius:var(--r);padding:20px;transition:border-color .3s,background .3s;display:block}.footer-archive:hover{border-color:var(--accent-line);background:var(--accent-soft)}.footer-archive strong{margin-bottom:6px;font-size:16px;display:block}.footer-archive p{color:var(--text-2);margin:0 0 14px;font-size:14px;line-height:1.75}.footer-word{letter-spacing:.08em;text-align:center;color:#0000;-webkit-text-stroke:1px var(--line-2);user-select:none;pointer-events:none;margin-bottom:-.1em;font-size:clamp(72px,20vw,290px);font-weight:800;line-height:.78}.footer-legal{border-top:1px solid var(--line);color:var(--text-3);background:var(--bg-1);padding-block:24px 32px;font-size:13px;line-height:1.75;position:relative}.footer-legal .wrap{gap:8px;display:grid}@media (width>=900px){.footer-legal .wrap{grid-template-columns:minmax(0,1fr) auto;gap:48px}}.footer-legal p{margin:0}.footer-legal a{text-underline-offset:3px;text-decoration:underline}.center-page{max-width:760px;padding-block:96px}.center-page h1{letter-spacing:-.03em;margin:18px 0;font-size:clamp(30px,5vw,48px)}.center-page p{color:var(--text-2);font-size:17px}.actions{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.calc{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:18px;margin-bottom:64px;display:grid}.calc-inputs,.calc-out{border:1px solid var(--line-2);border-radius:var(--r);background:var(--bg-1);min-width:0;margin:0;padding:26px}.calc-inputs{grid-template-columns:1fr 1fr;gap:16px 14px;display:grid}.calc-inputs legend{float:left;width:100%;margin-bottom:4px;padding:0}.calc-field{color:var(--text-2);gap:7px;min-width:0;font-size:13px;display:grid}.calc-wide{grid-column:1/-1}.calc-field input:not([type=checkbox]),.calc-field select{border:1px solid var(--line-2);border-radius:var(--r-sm);background:var(--bg);width:100%;min-height:44px;color:var(--text);font:inherit;font-variant-numeric:tabular-nums;padding:0 12px;font-size:15px;transition:border-color .2s,box-shadow .2s}.calc-field input:focus-visible,.calc-field select:focus-visible{border-color:var(--accent-line);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.calc-check{cursor:pointer;grid-template-columns:auto 1fr;align-self:end;align-items:center;min-height:44px}.calc-check input{width:18px;height:18px;accent-color:var(--accent)}.calc-check:has(input:disabled){opacity:.45;cursor:not-allowed}.calc-note{color:var(--text-3);grid-column:1/-1;min-height:1em;margin:0;font-size:13px}.calc-out{top:calc(var(--header) + 20px);background:linear-gradient(180deg, var(--accent-soft), transparent 60%), var(--bg-1);border-color:var(--accent-line);align-self:start;position:sticky}.calc-out dl{gap:0;margin:16px 0 0;display:grid}.calc-out dl>div{border-top:1px dashed var(--line-2);justify-content:space-between;align-items:baseline;gap:12px;padding:13px 0;display:flex}.calc-out dt{color:var(--text-2);font-size:13.5px}.calc-out dd{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right;margin:0;font-size:15px}.calc-out .calc-key dd{color:var(--accent);font-size:20px;font-weight:600}@media (width<=860px){.calc{grid-template-columns:1fr}.calc-out{position:static}}@media (width<=480px){.calc-inputs{grid-template-columns:1fr;padding:20px}.calc-out{padding:20px}}.tool-card{border:1px solid var(--accent-line);border-radius:var(--r);background:linear-gradient(120deg, var(--accent-soft), transparent 70%), var(--bg-1);transition:border-color .3s, transform .3s var(--ease);gap:10px;margin-bottom:28px;padding:28px;display:grid;position:relative;overflow:hidden}.tool-card:hover{border-color:var(--accent);transform:translateY(-2px)}.tool-card strong{letter-spacing:-.01em;font-size:22px}.tool-card p{color:var(--text-2);max-width:56ch;margin:0}.section-tight{padding-top:0}.tool-band{grid-template-columns:1fr auto;align-items:end;column-gap:40px;margin:0;padding:36px 40px}.tool-band .label,.tool-band strong,.tool-band p{grid-column:1}.tool-band strong{font-size:clamp(22px,2.4vw,28px)}.tool-band .link-arrow{grid-area:1/2/span 3;align-self:center}@media (width<=720px){.tool-band{grid-template-columns:1fr;padding:26px 22px}.tool-band .link-arrow{grid-area:auto/1}}.geo-tip{border-bottom:1px solid var(--accent-line);background:linear-gradient(90deg, var(--accent-soft), transparent 80%), var(--bg-1)}.geo-tip-inner{align-items:center;gap:16px;min-height:52px;padding-block:10px;font-size:14px;display:flex}.geo-tip-inner p{color:var(--text-2);flex:1;min-width:0;margin:0}.geo-tip-close{width:32px;height:32px;color:var(--text-3);cursor:pointer;background:0 0;border:0;border-radius:50%;flex:none;font-size:20px;line-height:1}.geo-tip-close:hover{background:var(--bg-3);color:var(--text)}@media (width<=640px){.geo-tip-inner{flex-wrap:wrap;gap:6px 12px}.geo-tip-inner p{flex-basis:calc(100% - 44px)}.geo-tip-close{order:2}.geo-tip-inner .link-arrow{order:3}}.feedback{max-width:var(--prose);border:1px solid var(--line-2);border-radius:var(--r);background:var(--bg-1);margin:56px 0 0;padding:22px 24px}.feedback-ask{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.feedback-ask strong{font-size:16px}.feedback-buttons{gap:10px;display:flex}.feedback-buttons button{border:1px solid var(--line-2);min-height:40px;color:var(--text);font:inherit;cursor:pointer;transition:border-color .2s, background .2s, transform .2s var(--ease);background:0 0;border-radius:999px;padding:0 18px;font-size:14px}.feedback-buttons button:hover{border-color:var(--accent-line);background:var(--accent-soft)}.feedback-buttons button:active{transform:scale(.96)}.feedback-thanks{color:var(--accent);margin:0;font-size:15px}.feedback-report{border-top:1px dashed var(--line-2);color:var(--text-3);margin:14px 0 0;padding-top:14px;font-size:13.5px}.feedback-report a{color:var(--text-2);text-underline-offset:3px;text-decoration:underline}.funding{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.funding-card{border:1px solid var(--line-2);border-radius:var(--r);background:var(--bg-1);min-width:0;padding:20px 22px}.funding-card h2{letter-spacing:-.01em;align-items:baseline;gap:10px;margin:0 0 6px;font-size:22px;display:flex}.funding-card h2 small{color:var(--text-3);font-size:12.5px;font-weight:400;font-family:var(--font-mono)}.funding-row{border-top:1px dashed var(--line-2);grid-template-columns:52px 1fr auto;grid-template-areas:"ex rate next""ex meta meta";align-items:baseline;gap:2px 12px;padding:12px 0;display:grid}.funding-ex{color:var(--text-2);grid-area:ex;font-size:13.5px}.funding-rate{font-family:var(--font-mono);font-variant-numeric:tabular-nums;grid-area:rate;font-size:20px;font-weight:600}.funding-rate.is-pos{color:var(--accent)}.funding-rate.is-neg{color:#ff6b6b}.funding-rate.is-na{font-family:var(--font-sans);color:var(--text-3);font-size:14px;font-weight:400}.funding-next{font-family:var(--font-mono);color:var(--text-2);font-variant-numeric:tabular-nums;white-space:nowrap;grid-area:next;font-size:12.5px}.funding-meta{color:var(--text-3);grid-area:meta;font-size:12.5px}.funding-note{color:var(--text-3);margin:18px 0 56px;font-size:13px}@media (prefers-color-scheme:light){.funding-rate.is-neg{color:#c0392b}}@media (width<=720px){.funding{grid-template-columns:1fr}}