@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-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}}}@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@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,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, 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:where(:not(iframe)){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}.invisible{visibility:hidden}.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.block{display:block}.flex{display:flex}.grid{display:grid}.hidden{display:none}.table{display:table}.shrink{flex-shrink:1}.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}.border{border-style:var(--tw-border-style);border-width:1px}.break-all{word-break:break-all}.uppercase{text-transform:uppercase}.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)}.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,)}}:root{--ink:#0b1b26;--ink-soft:#1f3543;--muted:#5a6b76;--muted-light:#8397a3;--brand:#0e6e7a;--brand-dark:#0a545e;--brand-light:#e6f2f3;--accent:#b8722f;--accent-light:#fdf3e8;--paper:#fff;--surface:#f6f8f9;--surface-2:#eef2f4;--line:#dfe6ea;--line-strong:#c2ced5;--radius:4px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;font-size:16px;line-height:1.6}h1,h2,h3,h4{letter-spacing:-.02em;color:var(--ink);font-weight:600;line-height:1.2}a{color:inherit;text-decoration:none}.wrap{max-width:1160px;margin:0 auto;padding:0 1.25rem}@media (min-width:768px){.wrap{padding:0 2rem}}.section{padding:3.5rem 0}@media (min-width:768px){.section{padding:4.5rem 0}}.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--brand);font-size:.75rem;font-weight:600}.h1{font-size:clamp(1.9rem,4vw,2.9rem);line-height:1.12}.h2{font-size:clamp(1.4rem,2.4vw,1.9rem)}.h3{font-size:1.1rem}.lede{color:var(--ink-soft);max-width:62ch;font-size:1.0625rem;line-height:1.65}.small{color:var(--muted);font-size:.8125rem}.tiny{color:var(--muted-light);font-size:.75rem}.btn{border-radius:var(--radius);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:.5rem;padding:.7rem 1.4rem;font-size:.9375rem;font-weight:600;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark)}.btn-ghost{color:var(--ink);border-color:var(--line-strong);background:0 0}.btn-ghost:hover{border-color:var(--ink-soft)}.table-scroll{-webkit-overflow-scrolling:touch;overflow-x:auto}table.spec{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:.875rem}table.spec th,table.spec td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:.6rem .75rem}table.spec thead th{letter-spacing:.04em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line-strong);white-space:nowrap;font-size:.75rem;font-weight:600}table.spec tbody tr:hover{background:var(--surface)}table.spec td.num{text-align:right;font-variant-numeric:tabular-nums;color:var(--ink)}table.spec td.code{white-space:nowrap;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-weight:600}table.spec td.dim{color:var(--muted-light)}table.spec-card th{width:55%}.chip{background:var(--surface-2);color:var(--ink-soft);white-space:nowrap;border-radius:3px;padding:.15rem .5rem;font-size:.75rem;font-weight:500;display:inline-block}.chip-brand{background:var(--brand-light);color:var(--brand-dark)}.chip-accent{background:var(--accent-light);color:var(--accent)}.card{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:1.25rem}.card-link:hover{border-color:var(--brand)}.stats{background:var(--line);border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:repeat(2,1fr);gap:1px;display:grid;overflow:hidden}@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}.stat{background:var(--paper);padding:1.1rem 1.25rem}.stat-value{letter-spacing:-.02em;color:var(--ink);font-variant-numeric:tabular-nums;font-size:1.5rem;font-weight:600}.stat-label{color:var(--muted);margin-top:.15rem;font-size:.75rem}.grid-2{grid-template-columns:1fr;gap:1rem;display:grid}@media (min-width:768px){.grid-2{grid-template-columns:1fr 1fr}}.site-header{border-bottom:1px solid var(--line);background:var(--paper);z-index:40;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:1rem;height:60px;display:flex}.brand{letter-spacing:-.02em;white-space:nowrap;align-items:baseline;gap:.45rem;font-size:1.0625rem;font-weight:600;display:flex}.brand-mark{color:var(--brand)}.brand-sub{color:var(--muted);letter-spacing:.06em;text-transform:uppercase;font-size:.6875rem;font-weight:500}.brand-logo{width:auto;height:clamp(20px,6.4vw,32px);display:block}.header-tools{align-items:center;gap:.8rem;margin-left:auto;display:flex}.header-cta{white-space:nowrap;padding:.42rem .85rem;font-size:.8125rem}.mobile-toggle{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--paper);width:2.125rem;height:2.125rem;color:var(--ink-soft);cursor:pointer;flex:none;justify-content:center;align-items:center;display:inline-flex}.mobile-toggle:hover{border-color:var(--brand);color:var(--brand)}.mobile-panel{background:var(--paper);border-bottom:1px solid var(--line);z-index:50;padding:.25rem 0 1.1rem;position:absolute;top:100%;left:0;right:0;box-shadow:0 18px 32px -24px #0b1b268c}.mobile-panel nav{flex-direction:column;display:flex}.mobile-panel nav a{border-bottom:1px solid var(--line);color:var(--ink-soft);padding:.72rem 0;font-size:.9375rem}.mobile-panel nav a:hover{color:var(--brand)}.mobile-panel .btn{justify-content:center;width:100%;margin-top:1rem;display:flex}@media (max-width:1023px){.header-cta{display:none}}@media (min-width:1024px){.mobile-toggle,.mobile-panel{display:none}}.nav{color:var(--ink-soft);gap:1.5rem;font-size:.875rem;display:none}@media (min-width:1024px){.nav{gap:1.15rem;display:flex}}@media (min-width:1200px){.nav{gap:1.5rem}}.nav a:hover{color:var(--brand)}.lang{gap:.15rem;font-size:.75rem;display:flex}.lang a,.lang span{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;border-radius:3px;padding:.2rem .4rem;font-weight:500}.lang a:hover{background:var(--surface-2);color:var(--ink)}.lang .active{background:var(--ink);color:#fff}@media (max-width:480px){.lang{gap:0}.lang a,.lang span{padding:.2rem .3rem}}.site-footer{border-top:1px solid var(--line);background:var(--surface);color:var(--muted);padding:2.75rem 0 1.75rem;font-size:.8125rem}.footer-grid{grid-template-columns:1fr;gap:2rem;display:grid}@media (min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}.footer-heading{letter-spacing:.06em;text-transform:uppercase;color:var(--ink);margin-bottom:.7rem;font-size:.75rem;font-weight:600}.footer-link:hover{color:var(--brand)}.footer-bottom{border-top:1px solid var(--line);color:var(--muted-light);flex-wrap:wrap;justify-content:space-between;gap:.75rem;margin-top:2rem;padding-top:1.25rem;font-size:.75rem;display:flex}.crumbs{color:var(--muted);flex-wrap:wrap;gap:.35rem;padding:.9rem 0;font-size:.75rem;display:flex}.crumbs a:hover{color:var(--brand)}.crumbs .sep{color:var(--line-strong)}.grade-code{letter-spacing:-.02em;color:var(--ink);font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:clamp(1.6rem,3.4vw,2.4rem);font-weight:600}.hardness-badge{border-radius:var(--radius);background:var(--ink);color:#fff;font-variant-numeric:tabular-nums;align-items:center;gap:.4rem;padding:.3rem .7rem;font-size:.9375rem;font-weight:600;display:inline-flex}.notice{border-left:3px solid var(--accent);background:var(--accent-light);color:var(--ink-soft);border-radius:0 var(--radius) var(--radius) 0;padding:.8rem 1rem;font-size:.8125rem}@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-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}