@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-ease:initial}}}@layer theme{:root,:host{--font-serif:"Source Serif 4", "Source Serif Pro", Georgia, serif;--font-mono:"IBM Plex Mono", ui-monospace, monospace;--spacing:.25rem;--container-3xl:48rem;--container-4xl:56rem;--container-6xl:72rem;--radius-sm:.25rem;--ease-out:cubic-bezier(0, 0, .2, 1);--ease-in-out:cubic-bezier(.4, 0, .2, 1);--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:"IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;--default-mono-font-family:"IBM Plex Mono", ui-monospace, monospace}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.collapse{visibility:collapse}.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.sticky{position:sticky}.top-0{top:calc(var(--spacing) * 0)}.z-30{z-index:30}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.mx-auto{margin-inline:auto}.mt-2{margin-top:calc(var(--spacing) * 2)}.mt-3{margin-top:calc(var(--spacing) * 3)}.mt-8{margin-top:calc(var(--spacing) * 8)}.mt-12{margin-top:calc(var(--spacing) * 12)}.mb-1{margin-bottom:calc(var(--spacing) * 1)}.mb-2{margin-bottom:calc(var(--spacing) * 2)}.mb-3{margin-bottom:calc(var(--spacing) * 3)}.mb-4{margin-bottom:calc(var(--spacing) * 4)}.mb-5{margin-bottom:calc(var(--spacing) * 5)}.mb-10{margin-bottom:calc(var(--spacing) * 10)}.mb-12{margin-bottom:calc(var(--spacing) * 12)}.ml-2{margin-left:calc(var(--spacing) * 2)}.ml-auto{margin-left:auto}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.inline-block{display:inline-block}.inline-flex{display:inline-flex}.inline-grid{display:inline-grid}.table{display:table}.min-h-screen{min-height:100vh}.max-w-3xl{max-width:var(--container-3xl)}.max-w-4xl{max-width:var(--container-4xl)}.max-w-6xl{max-width:var(--container-6xl)}.flex-1{flex:1}.flex-shrink{flex-shrink:1}.shrink-0{flex-shrink:0}.border-collapse{border-collapse:collapse}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-baseline{align-items:baseline}.items-center{align-items:center}.items-start{align-items:flex-start}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-0{gap:calc(var(--spacing) * 0)}.gap-2{gap:calc(var(--spacing) * 2)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-4{gap:calc(var(--spacing) * 4)}.gap-6{gap:calc(var(--spacing) * 6)}.gap-8{gap:calc(var(--spacing) * 8)}.gap-10{gap:calc(var(--spacing) * 10)}.gap-x-5{column-gap:calc(var(--spacing) * 5)}.gap-x-6{column-gap:calc(var(--spacing) * 6)}.gap-y-2{row-gap:calc(var(--spacing) * 2)}.rounded{border-radius:.25rem}.rounded-sm{border-radius:var(--radius-sm)}.border{border-style:var(--tw-border-style);border-width:1px}.fill-rule{fill:var(--rule)}.px-4{padding-inline:calc(var(--spacing) * 4)}.py-3{padding-block:calc(var(--spacing) * 3)}.py-8{padding-block:calc(var(--spacing) * 8)}.py-12{padding-block:calc(var(--spacing) * 12)}.py-20{padding-block:calc(var(--spacing) * 20)}.capitalize{text-transform:capitalize}.lowercase{text-transform:lowercase}.uppercase{text-transform:uppercase}.italic{font-style:italic}.no-underline{text-decoration-line:none}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-colors{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}.ease-out{--tw-ease:var(--ease-out);transition-timing-function:var(--ease-out)}@media (min-width:40rem){.sm\:hidden{display:none}.sm\:inline{display:inline}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:gap-6{gap:calc(var(--spacing) * 6)}.sm\:px-6{padding-inline:calc(var(--spacing) * 6)}.sm\:py-12{padding-block:calc(var(--spacing) * 12)}.sm\:py-16{padding-block:calc(var(--spacing) * 16)}.sm\:py-28{padding-block:calc(var(--spacing) * 28)}}@media (min-width:48rem){.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:grid-cols-\[1fr_1\.4fr\]{grid-template-columns:1fr 1.4fr}.md\:gap-6{gap:calc(var(--spacing) * 6)}.md\:gap-px{gap:1px}}@media (min-width:64rem){.lg\:block{display:block}.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-\[1\.4fr_1fr\]{grid-template-columns:1.4fr 1fr}.lg\:gap-10{gap:calc(var(--spacing) * 10)}.lg\:gap-16{gap:calc(var(--spacing) * 16)}.lg\:py-24{padding-block:calc(var(--spacing) * 24)}}}:root{--bg:#fbf8f2;--bg-deep:#f5f0e5;--card:#fff;--ink:#1a1410;--ink-2:#4a3f35;--ink-3:#8b7f70;--ink-4:#b4a99a;--rule:#1a141017;--rule-strong:#1a141029;--accent:#d14a1f;--accent-ink:#fff;--accent-tint:#fbeee3;--accent-tint-2:#f5dac4;--grade-a:#2e6b3a;--grade-b:#b98424;--grade-c:#c9531f;--grade-d:#a8362a}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-family:IBM Plex Sans,system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.55}.t-display{letter-spacing:-.02em;color:var(--ink);font-family:"Source Serif 4",serif;font-size:56px;font-weight:600;line-height:1.12}.t-display em{color:var(--accent);font-style:italic;font-weight:600}.t-h1{letter-spacing:-.018em;color:var(--ink);font-family:"Source Serif 4",serif;font-size:clamp(26px,4.4vw,36px);font-weight:600;line-height:1.18}.t-h1 em{color:var(--accent);font-style:italic;font-weight:600}.t-h2{letter-spacing:-.012em;color:var(--ink);font-family:"Source Serif 4",serif;font-size:22px;font-weight:600;line-height:1.2}.t-h3{letter-spacing:-.006em;color:var(--ink);font-family:"Source Serif 4",serif;font-size:17px;font-weight:500;line-height:1.3}.serif{font-family:"Source Serif 4",serif;font-weight:500}.mono{font-family:IBM Plex Mono,ui-monospace,monospace}.label{letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-family:IBM Plex Mono,monospace;font-size:10px}.num{font-variant-numeric:tabular-nums}a{color:inherit}.hr{background:var(--rule);width:100%;height:1px}.btn{border:1px solid var(--rule-strong);color:var(--ink);background:var(--card);border-radius:4px;align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:500;text-decoration:none;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.btn:hover{background:var(--bg-deep)}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.btn.primary:hover{filter:brightness(.93)}.btn.ghost{color:var(--ink-2);background:0 0;border-color:#0000}.btn.ghost:hover{background:var(--bg-deep);color:var(--ink)}.pill{letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--rule-strong);color:var(--ink-2);background:0 0;border-radius:999px;align-items:center;gap:6px;padding:2px 8px;font-family:IBM Plex Mono,ui-monospace,monospace;font-size:10px;display:inline-flex}.pill.solid{background:var(--ink);color:var(--bg);border-color:var(--ink)}.pill.accent{background:var(--accent-tint);color:var(--accent);border-color:var(--accent-tint-2)}.card{background:var(--card);border:1px solid var(--rule);border-radius:4px;padding:18px}.prose-editorial{color:var(--ink-2);max-width:68ch;font-size:15px;line-height:1.65}.prose-editorial h2{color:var(--ink);letter-spacing:-.012em;margin:36px 0 12px;font-family:"Source Serif 4",serif;font-size:26px;font-weight:600;line-height:1.2}.prose-editorial h3{color:var(--ink);margin:28px 0 8px;font-family:"Source Serif 4",serif;font-size:19px;font-weight:500}.prose-editorial p{margin:12px 0}.prose-editorial ul{margin:12px 0 12px 22px}.prose-editorial ol{margin:12px 0 12px 22px;list-style:decimal}.prose-editorial li{margin:4px 0}.prose-editorial strong{color:var(--ink);font-weight:600}.prose-editorial em{color:var(--accent);font-style:italic}.prose-editorial code{background:var(--bg-deep);color:var(--ink);border-radius:3px;padding:1px 6px;font-family:IBM Plex Mono,monospace;font-size:13px}.prose-editorial blockquote{border-left:3px solid var(--accent);color:var(--ink-2);margin:18px 0;padding:4px 18px;font-style:italic}.prose-editorial hr{border:0;border-top:1px solid var(--rule);margin:32px 0}.prose-editorial table{border-collapse:collapse;width:100%;margin:16px 0;font-size:13px}.prose-editorial th{text-align:left;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3);border-bottom:1px solid var(--rule-strong);padding:8px 10px;font-family:IBM Plex Mono,monospace;font-size:11px}.prose-editorial td{border-bottom:1px solid var(--rule);vertical-align:top;padding:8px 10px}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--rule-strong);border:2px solid var(--bg);border-radius:999px}::-webkit-scrollbar-thumb:hover{background:var(--ink-4)}html[data-lang=en] [data-lang-only=zh],html[data-lang=zh] [data-lang-only=en],html:not([data-lang]) [data-lang-only=zh]{display:none!important}[lang=zh],[data-lang-only=zh]{font-family:"Source Serif 4",Source Han Serif SC,Noto Serif SC,IBM Plex Sans,PingFang SC,Microsoft YaHei,sans-serif}[data-lang-only=zh] .serif,[data-lang-only=zh] .t-h1,[data-lang-only=zh] .t-h2,[data-lang-only=zh] .t-h3,[data-lang-only=zh] .t-display{letter-spacing:0;font-family:"Source Serif 4",Source Han Serif SC,Noto Serif SC,PingFang SC,Microsoft YaHei,serif}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}