kbd,samp{font-family:var(--font-mono)}:root{--deep-navy:#0a192f;--pale-ice:#ebf2fa;--royal-blue:#1967d2;--anti-orange:#e37400;--note-green:#34a853;--claude-red:#d93025;--gemini-purple:#8e24aa;--workspace-gold:#fabb05;--anti-orange-strong:#b85e00;--note-green-strong:#2a8743;--workspace-gold-strong:#967003;--accent-cyan:#38bdf8;--local-charcoal:#424242;--white:#fff;--ink-soft:#0a192fb8;--line:#0a192f1a;--glass:#ffffffc7;--platinum-gold:#e8dcc4;--rose-gold:#b76e79;--font-display:"Roboto Condensed", system-ui, sans-serif;--font-heading:"Roboto Condensed", system-ui, sans-serif;--font-sans:"Roboto", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--rs-tool:#fabb05;--rs-ebook:#8e24aa;--rs-course:#e37400;--rs-ai:#1967d2;--rs-public:#34a853;--rs-member:#d93025;--rs-new:#fde047;--rs-update:#d97706;--nav-h:72px;--nav-h-mobile:56px;--elev-1:0 1px 0 #0a192f1a, 0 2px 0 #0a192f12, 0 3px 8px #0a192f14;--elev-low:0 1px 0 #0a192f1f, 0 2px 0 #0a192f12, 0 3px 0 #0a192f12, 0 4px 0 #0a192f05, 0 8px 16px #0a192f1a;--elev-mid:0 1px 0 #0a192f21, 0 2px 0 #0a192f14, 0 4px 0 #0a192f0e, 0 6px 0 #0a192f0a, 0 8px 0 #0a192f06, 0 10px 0 #0a192f04, 0 12px 0 #0a192f02, 0 18px 30px #0a192f24;--elev-high:0 1px 0 #0a192f26, 0 2px 0 #0a192f1a, 0 4px 0 #0a192f13, 0 6px 0 #0a192f0f, 0 8px 0 #0a192f0b, 0 10px 0 #0a192f09, 0 12px 0 #0a192f07, 0 14px 0 #0a192f0a, 0 16px 0 #0a192f04, 0 18px 0 #0a192f03, 0 20px 0 #0a192f02, 0 28px 50px #0a192f38;--elev-2:var(--elev-mid);--elev-3:var(--elev-high);--elev-4:var(--elev-high);--line-soft:#0a192f2e;--line-strong:#0a192f52;--shadow-card:var(--elev-2);--shadow-card-hover:var(--elev-3);--radius-block:0;--radius-tag:2px;--rail-micro:2.5px;--rail-std:4px;--rail-macro:6px;--gutter-micro:1.5px;--gutter-std:2px;--gutter-macro:2.5px;--chamfer-sm:6px;--chamfer-md:10px;--chamfer-lg:14px;--depth-max:3;--touch-target-min:44px;--transition:.85s cubic-bezier(.65, 0, .35, 1);--card-pop-duration:.2s;--card-pop-ease:cubic-bezier(.16, 1, .3, 1)}:where(a,button,input,select,textarea,[tabindex]):focus-visible{outline:2px solid var(--royal-blue);outline-offset:2px;border-radius:2px}*{box-sizing:border-box;margin:0;padding:0}.skip-link{z-index:9999;background:var(--deep-navy);color:var(--white);border-radius:2px;padding:.75rem 1rem;text-decoration:none;transition:top .2s;position:absolute;top:-100px;left:1rem}.skip-link:focus{top:1rem}html{scroll-behavior:smooth;overflow-x:clip}body{width:100%;min-height:100vh;font-family:var(--font-sans);color:var(--deep-navy);-webkit-font-smoothing:antialiased;margin:0;line-height:1.7;position:relative;overflow-x:clip}h1,h2,h3,h4,h5,h6,.page-title,.spec-title,.blueprint-title,.site-brand,.eyebrow{font-family:var(--font-heading);letter-spacing:-.01em}.article-body p,.article-body li,.card p,.concept-copy p,.concept-reveal span:last-child,.resource-card p,.article-row-main p,.section-sub,.page-sub{text-align:left}body:before{content:"";z-index:-2;background-image:linear-gradient(#3c3c3c1a 1px,#0000 1px),linear-gradient(90deg,#3c3c3c1a 1px,#0000 1px),linear-gradient(#3c3c3c0a 1px,#0000 1px),linear-gradient(90deg,#3c3c3c0a 1px,#0000 1px);background-position:0 0,0 0,0 0,0 0;background-size:96px 96px,96px 96px,24px 24px,24px 24px;position:fixed;inset:0}body{background: radial-gradient(circle at 12% 18%, #d9302517 0, #e374001a 140px, #fabb0514 280px, #34a8530f 420px, #1967d20a 580px, transparent 760px),  radial-gradient(circle at 86% 42%, #34a8531a 0, #fabb0512 160px, #e374000e 320px, #1967d20a 480px, transparent 660px),  radial-gradient(circle at 22% 78%, #8e24aa17 0, #1967d211 150px, #34a8530b 290px, transparent 500px),  radial-gradient(circle at 70% 88%, #1967d217 0, #34a8530e 130px, transparent 340px),  var(--pale-ice);background-attachment:scroll}img{max-width:100%;display:block}a{color:inherit}button,input{font:inherit}code,.mono{font-family:var(--font-mono)}.section{padding:clamp(2rem,6vh,6rem) clamp(1rem,6vw,3rem);position:relative}.section-light,.section-ice{background-color:#0000;background-image:radial-gradient(circle at 0 0,#3c3c3c38 2px,#0000 2.8px),linear-gradient(#3c3c3c14 1px,#0000 1px),linear-gradient(90deg,#3c3c3c14 1px,#0000 1px),linear-gradient(#3c3c3c09 1px,#0000 1px),linear-gradient(90deg,#3c3c3c09 1px,#0000 1px);background-position:0 0,0 0,0 0,0 0,0 0;background-size:96px 96px,96px 96px,96px 96px,24px 24px,24px 24px}.section-dark{background-color:var(--deep-navy);color:var(--white);background-image:radial-gradient(circle at 0 0,#ffffff2e 2px,#0000 2.6px),linear-gradient(#ffffff0f 1px,#0000 1px),linear-gradient(90deg,#ffffff0f 1px,#0000 1px),linear-gradient(#ffffff05 1px,#0000 1px),linear-gradient(90deg,#ffffff05 1px,#0000 1px),radial-gradient(800px 500px at 20% 0,#1967d226,#0000 60%),radial-gradient(700px 450px at 85% 100%,#e374001a,#0000 60%);background-size:96px 96px,96px 96px,96px 96px,24px 24px,24px 24px,auto,auto}.section-compact-bg{background-color:#f0f2f5a6;background-image:none;padding-top:2rem;padding-bottom:2.25rem}.section-compact-bg .section-head{margin-bottom:1.25rem}.section-compact-bg .eyebrow{margin-bottom:.35rem}.section-compact-bg .section-title{margin-top:.35rem;font-size:clamp(1.4rem,2.6vw,2.2rem);line-height:1.08}.section-compact-bg .section-sub{margin-top:.45rem;font-size:clamp(.95rem,1.2vw,1.1rem)}.section-related-compact{padding-top:1.25rem;padding-bottom:1.5rem}.section-related-compact .section-inner{width:min(980px,100%)}.section-related-compact .section-head{margin-bottom:.85rem}.section-related-compact .eyebrow{letter-spacing:.14em;margin-bottom:.2rem;font-size:clamp(.72rem,1vw,.85rem)}.section-related-compact .section-title{margin-top:.2rem;font-size:clamp(1.2rem,2vw,1.6rem);line-height:1.1}.section-related-compact .section-sub{max-width:560px;margin-top:.25rem;font-size:clamp(.86rem,1vw,.98rem);line-height:1.5}.section-related-compact .text-link{margin-top:.85rem;font-size:clamp(.9rem,1.1vw,1.05rem)}.section-inner{z-index:2;width:min(1440px,100%);margin:0 auto;position:relative}.section-head{max-width:860px;margin-bottom:3rem}.section-head.center{text-align:center;margin-left:auto;margin-right:auto}.section-title,.page-title{letter-spacing:0;text-wrap:balance;margin:.75rem 0 0;font-size:clamp(2rem,5.5vw,4.5rem);font-weight:900;line-height:1.12}.section-sub,.page-sub{max-width:860px;color:var(--ink-soft);margin:1rem 0 0;font-size:clamp(1.05rem,1.4vw,1.25rem)}.section-dark .section-sub,.section-dark .page-sub{color:#ffffffb8}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem;display:grid}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.25rem;display:grid}.stack{gap:1rem;display:grid}.text-link{color:var(--royal-blue);align-items:center;gap:.45rem;margin-top:2rem;font-weight:800;text-decoration:none;display:inline-flex}.text-link:hover{color:var(--anti-orange)}.section-zoned{position:relative}.section-zoned:before,.section-zoned>.zone-curb,.section-zoned>.zone-label{display:none!important}.road-divider{background:repeating-linear-gradient(90deg,#0a192f38 0 16px,#0000 16px 28px) 0 14px/100% 1px no-repeat,linear-gradient(90deg,#d930256b,#d930256b) 0 24px/100% 1px no-repeat,repeating-linear-gradient(90deg,#0a192f38 0 16px,#0000 16px 28px) 0 34px/100% 1px no-repeat,linear-gradient(#0000 0 14px,#fffffff2 14px 34px,#0000 34px 48px);height:48px;margin:0;position:relative}.road-divider.with-arrow .road-arrow{color:var(--deep-navy);font-family:var(--font-mono);letter-spacing:.15em;text-transform:uppercase;border-left:2.5px solid var(--claude-red);clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,0 100%);filter:drop-shadow(1px 0 #0a192f26)drop-shadow(-1px 0 #0a192f26)drop-shadow(0 1px #0a192f26)drop-shadow(0 -1px #0a192f26)drop-shadow(-2px 2px #0a192f1a);z-index:3;background:#fff;border-top:none;border-bottom:2.5px solid #8b0000;border-right:none;border-radius:0;align-items:center;gap:.45rem;padding:.22rem .75rem;font-size:.72rem;font-weight:800;display:inline-flex;position:absolute;top:24px;left:50%;transform:translate(-50%,-50%)}.road-divider.with-arrow .road-arrow:after{content:"↓";font-size:.9rem}.section-toggle>summary{cursor:pointer;list-style:none}.section-toggle>summary::-webkit-details-marker{display:none}.section-toggle[open]>.road-divider.with-arrow .road-arrow:after{content:"↑"}.road-divider.related-divider{background:linear-gradient(90deg,#0a192f73,#0a192f73) 0 13px/100% 1px no-repeat,repeating-linear-gradient(90deg,#d9302585 0 18px,#0000 18px 32px) 0 25px/100% 1px no-repeat,linear-gradient(90deg,#0a192f73,#0a192f73) 0 38px/100% 1px no-repeat,linear-gradient(#0000 0 14px,#fff 14px 38px,#0000 38px 52px);height:52px}.road-divider.related-divider.with-arrow .road-arrow{letter-spacing:.16em;box-shadow:var(--elev-1), 0 0 0 4px #fff;padding:.22rem .65rem;font-size:.6rem;top:26px}.road-divider.related-divider.with-arrow .road-arrow:after{font-size:.72rem}.road-divider-v{background:linear-gradient(180deg, var(--claude-red) 0, var(--claude-red) 18px, transparent 18px, transparent 30px) center / 2px 30px repeat-y, linear-gradient(180deg, #0a192f8c, #0a192f8c) 8px 0 / 1px 100% no-repeat, linear-gradient(180deg, #0a192f8c, #0a192f8c) calc(100% - 8px) 0 / 1px 100% no-repeat;width:32px;margin:0;position:relative}[data-anim]{opacity:0;transition:opacity .7s,transform .7s cubic-bezier(.2,.7,.3,1);transform:translateY(24px)}[data-anim].in-view{opacity:1;transform:translateY(0)}[data-anim="2"].in-view{transition-delay:80ms}[data-anim="3"].in-view{transition-delay:.16s}[data-anim="4"].in-view{transition-delay:.24s}[data-anim="5"].in-view{transition-delay:.32s}@media (width<=768px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-2{grid-template-columns:1fr}}@media (width<=600px){.section-head{margin-bottom:2rem}.grid-3,.grid-2{grid-template-columns:1fr}.section{padding:clamp(3rem,6vh,4.5rem) 1.25rem}}.site-nav{z-index:100;padding:.9rem 6vw;padding-top:max(.9rem, env(safe-area-inset-top));padding-left:max(6vw, env(safe-area-inset-left));padding-right:max(6vw, env(safe-area-inset-right));backdrop-filter:blur(10px);background:#ffffffe6;border-bottom:1px solid #0a192f14;justify-content:space-between;align-items:center;gap:1.5rem;transition:box-shadow .25s,background .25s;display:flex;position:sticky;top:0}.site-nav.scrolled{background:#fffffff5;box-shadow:0 8px 26px #0a192f14}.brand{align-items:center;gap:.75rem;min-width:44px;text-decoration:none;display:inline-flex}.brand img{width:44px;height:44px}.nav-links{align-items:center;gap:1.4rem;display:flex}.nav-links a{min-height:44px;color:var(--deep-navy);align-items:center;font-size:clamp(.9rem,1.1vw,1.05rem);font-weight:700;text-decoration:none;display:inline-flex;position:relative}.nav-links a:hover,.nav-links a.active{color:var(--royal-blue)}.nav-links a.active:after{content:"";background:var(--anti-orange);height:3px;position:absolute;bottom:-.55rem;left:0;right:0}.mobile-menu-toggle{border:1px solid var(--line);width:44px;min-width:44px;height:44px;min-height:44px;color:var(--deep-navy);cursor:pointer;background:#fff;display:none}.mobile-menu-toggle span{background:currentColor;width:18px;height:2px;margin:4px auto;display:block}.btn{box-sizing:border-box;--btn-cut:var(--chamfer-sm);--btn-rail:var(--rail-micro);border-top:none;border-right:none;border-left:var(--btn-rail) solid color-mix(in srgb, var(--accent,var(--deep-navy)) 40%, #fff);border-bottom:var(--gutter-micro) solid color-mix(in srgb, var(--accent,var(--deep-navy)) 70%, #061427);min-height:44px;clip-path:polygon(0 0, calc(100% - var(--btn-cut)) 0, 100% var(--btn-cut), 100% 100%, 0 100%);cursor:pointer;filter:drop-shadow(1px 0 #0a192f33)drop-shadow(-1px 0 #0a192f33)drop-shadow(0 1px #0a192f33)drop-shadow(0 -1px #0a192f33)drop-shadow(-3px 3px #0a192f1f);justify-content:center;align-items:center;gap:.5rem;margin:0;padding:.75rem 1.35rem;font-size:clamp(.92rem,1.1vw,1.05rem);font-weight:800;line-height:1.2;text-decoration:none;transition:transform .2s cubic-bezier(.2,.7,.3,1),filter .2s,background .2s,color .2s,border-color .2s;display:inline-flex;border-radius:0!important}.btn:hover{filter:drop-shadow(-5px 5px #0a192f2e);transform:translateY(-3px)translate(2px)}.btn-primary{--accent:var(--anti-orange);background:var(--anti-orange-strong);color:#fff;border-color:#fff3}.btn-primary:hover{background:color-mix(in srgb, var(--anti-orange-strong) 85%, #000);filter:drop-shadow(-6px 6px #e3740047)}.btn-secondary{--accent:var(--deep-navy);color:var(--deep-navy);border-color:var(--line-soft);background:#fff}.section-dark .btn-secondary,.btn-secondary-dark{color:#fff;background:0 0;border-color:#fff6}.btn-secondary:hover{background:var(--deep-navy);color:#fff}.section-dark .btn-secondary:hover,.btn-secondary-dark:hover{color:var(--deep-navy);background:#fff}.eyebrow{color:var(--royal-blue);letter-spacing:.16em;text-transform:uppercase;align-items:center;gap:.55rem;font-size:clamp(.78rem,1vw,.9rem);font-weight:900;display:inline-flex}.eyebrow:before{content:"";background:currentColor;width:28px;height:4px}.section-dark .eyebrow{color:var(--workspace-gold)}.letter-block{color:#fff;background:color-mix(in srgb, var(--accent,var(--royal-blue)) 72%, #000);border-top:1.5px solid color-mix(in srgb, var(--accent,var(--royal-blue)) 75%, #fff);border-right:1.5px solid color-mix(in srgb, var(--accent,var(--royal-blue)) 75%, #fff);border-left:4px solid color-mix(in srgb, var(--accent,var(--royal-blue)) 65%, #000);border-bottom:4px solid color-mix(in srgb, var(--accent,var(--royal-blue)) 65%, #000);border-radius:0;flex:0 0 56px;place-items:center;width:56px;height:56px;transition:transform .2s,box-shadow .2s;display:inline-grid;position:relative;overflow:hidden;box-shadow:-4px 4px #0a192f2e}.letter-block-sm{border-bottom-width:2.5px;border-left-width:2.5px;flex:0 0 40px;width:40px;height:40px;box-shadow:-3px 3px #0a192f2e}.letter-block-lg{border-bottom-width:4px;border-left-width:4px;flex:0 0 72px;width:72px;height:72px;box-shadow:-5px 5px #0a192f2e}.letter-block-glyph{z-index:2;font-family:var(--font-mono);letter-spacing:-.05em;text-shadow:none;font-size:clamp(1.7rem,2vw,1.9rem);font-weight:800;line-height:1;position:relative}.letter-block-sm .letter-block-glyph{font-size:clamp(1.1rem,1.3vw,1.25rem)}.letter-block-lg .letter-block-glyph{font-size:clamp(2.3rem,2.8vw,2.6rem)}.letter-block-corner{pointer-events:none;width:9px;height:9px;position:absolute;top:5px;right:5px}.letter-block-corner:before,.letter-block-corner:after{content:"";background:#ffffffc7;position:absolute}.letter-block-corner:before{width:9px;height:1.5px;top:0;right:0}.letter-block-corner:after{width:1.5px;height:9px;top:0;right:0}.letter-block-sm .letter-block-corner{width:6px;height:6px;top:3px;right:3px}.letter-block-sm .letter-block-corner:before{width:6px}.letter-block-sm .letter-block-corner:after{height:6px}.letter-block-stamp{pointer-events:none;border:1px solid #ffffff80;border-radius:50%;width:6px;height:6px;position:absolute;bottom:4px;left:4px}.letter-block-sm .letter-block-stamp{display:none}.card:hover .letter-block{transform:translateY(-2px)}.card{--card-cut:var(--chamfer-md);--card-rail:var(--rail-std);border-top:none;border-right:none;border-left:var(--card-rail) solid var(--accent,var(--royal-blue));border-bottom:var(--gutter-std) solid color-mix(in srgb, var(--accent,var(--royal-blue)) 45%, #64748b);min-height:100%;clip-path:polygon(0 0, calc(100% - var(--card-cut)) 0, 100% var(--card-cut), 100% 100%, 0 100%);filter:drop-shadow(0 0 1px #1e293b59)drop-shadow(0 2px 4px #0f172a0f)drop-shadow(0 10px 24px #1e3a8a14)drop-shadow(0 20px 42px #0f172a0a);transition:transform var(--card-pop-duration,.3s) var(--card-pop-ease,cubic-bezier(.16, 1, .3, 1)), background .25s ease, border-color var(--card-pop-duration,.3s) ease, border-left-color var(--card-pop-duration,.3s) ease, border-bottom-color var(--card-pop-duration,.3s) ease;background:linear-gradient(155deg,#fffffffa 0%,#f8fafcf0 45%,#ecf4fde0 100%);border-radius:0;padding:1.6rem 1.6rem 1.6rem 1.85rem;position:relative}.card:before{content:"";clip-path:polygon(0 0, calc(100% - var(--card-cut,18px)) 0, 100% var(--card-cut,18px), 100% 100%, 0 100%);pointer-events:none;z-index:1;background:linear-gradient(135deg,#fffffff2 0%,#ffffff80 15%,#ffffff1a 40%,#0000 60%);transition:opacity .3s,background .3s;position:absolute;inset:0;box-shadow:inset 0 1.5px #fffffff2,inset 1.5px 0 #fffc,inset -1px 0 #cbd5e159}.card>*{z-index:2;position:relative}.card.elev-low{filter:drop-shadow(0 0 1px #0f172a24)drop-shadow(0 1px 3px #0f172a0a)drop-shadow(0 6px 14px #1e3a8a0f)}.card.elev-high{filter:drop-shadow(0 0 1px #0f172a2e)drop-shadow(0 3px 6px #0f172a12)drop-shadow(0 14px 32px #1e3a8a1f)drop-shadow(0 28px 56px #0f172a0f)}.grid-3>.card:nth-child(3n+1):not(.elev-low):not(.elev-high){filter:drop-shadow(0 0 1px #0f172a29)drop-shadow(0 2px 4px #0f172a0d)drop-shadow(0 10px 24px #1e3a8a14)drop-shadow(0 20px 42px #0f172a0a)}.grid-3>.card:nth-child(3n+2):not(.elev-low):not(.elev-high){filter:drop-shadow(0 0 1px #0f172a2e)drop-shadow(0 3px 6px #0f172a12)drop-shadow(0 14px 30px #1e3a8a1c)drop-shadow(0 24px 50px #0f172a0d)}.grid-3>.card:nth-child(3n+3):not(.elev-low):not(.elev-high){filter:drop-shadow(0 0 1px #0f172a26)drop-shadow(0 2px 3px #0f172a0d)drop-shadow(0 8px 18px #1e3a8a12)drop-shadow(0 16px 36px #0f172a0a)}.card:hover{z-index:10;border-left-color:var(--accent,var(--royal-blue));border-bottom-color:var(--accent,var(--royal-blue));filter:drop-shadow(0 0 1px #0f172a38) drop-shadow(0 4px 8px #0f172a14) drop-shadow(0 16px 36px color-mix(in srgb, var(--accent,var(--royal-blue)) 22%, transparent)) drop-shadow(0 30px 60px #0f172a1a);background:linear-gradient(155deg,#fff 0%,#fafcfffa 45%,#f0f7fff0 100%);transform:translateY(-8px)scale(1.006)}.card:hover:before{opacity:1}.card.elev-low:hover{z-index:10;filter:drop-shadow(0 0 1px #0f172a33) drop-shadow(0 3px 6px #0f172a0f) drop-shadow(0 12px 24px color-mix(in srgb, var(--accent,var(--royal-blue)) 18%, transparent)) drop-shadow(0 22px 44px #0f172a14);transform:translateY(-6px)scale(1.004)}.card.elev-high:hover{z-index:10;filter:drop-shadow(0 0 1px #0f172a40) drop-shadow(0 6px 12px #0f172a1a) drop-shadow(0 20px 44px color-mix(in srgb, var(--accent,var(--royal-blue)) 28%, transparent)) drop-shadow(0 36px 72px #0f172a24);transform:translateY(-12px)scale(1.008)}.section-dark .card,[data-theme=dark] .card{border-top:none;border-right:none;border-left:var(--card-rail) solid var(--accent,var(--royal-blue));border-bottom:var(--gutter-std) solid color-mix(in srgb, var(--accent,var(--royal-blue)) 70%, #061427);color:#f8fafc;clip-path:polygon(0 0, calc(100% - var(--card-cut)) 0, 100% var(--card-cut), 100% 100%, 0 100%);filter:drop-shadow(1px 0 #ffffff14)drop-shadow(-1px 0 #ffffff14)drop-shadow(0 1px #ffffff14)drop-shadow(0 -1px #ffffff14)drop-shadow(0 10px 24px #00000073);background:linear-gradient(165deg,#0e1726e6 0%,#060b14f5 100%)}.section-dark .card:before,[data-theme=dark] .card:before{background:linear-gradient(135deg,#ffffff29 0%,#ffffff0a 25%,#0000 60%);box-shadow:inset 0 1px #ffffff38,inset 1px 0 #ffffff1f}.section-dark .card:hover,[data-theme=dark] .card:hover{z-index:5;border-left-color:var(--accent,var(--royal-blue));border-bottom-color:var(--accent,var(--royal-blue));filter:drop-shadow(1px 0 0 #ffffff29) drop-shadow(-1px 0 0 #ffffff29) drop-shadow(0 1px 0 #ffffff29) drop-shadow(0 -1px 0 #ffffff29) drop-shadow(0 0 24px color-mix(in srgb, var(--accent,var(--royal-blue)) 35%, transparent)) drop-shadow(0 20px 40px #000000a6);background:linear-gradient(165deg,#142036f0 0%,#0a101cfa 100%);transform:translateY(-8px)}.section-dark .card p,[data-theme=dark] .card p{color:#ffffffbf}.section-dark .card h2,.section-dark .card h3,[data-theme=dark] .card h2,[data-theme=dark] .card h3{color:#f8fafc}.card-head{justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1rem;display:flex}.card h2,.card h3{color:var(--accent,var(--deep-navy));letter-spacing:-.01em;margin:.8rem 0 .45rem;font-size:clamp(1.2rem,1.6vw,1.4rem);font-weight:800;line-height:1.22}.card p{color:var(--ink-soft);margin:0;font-size:clamp(1rem,1.2vw,1.15rem)}.section-dark .card h2,.section-dark .card h3{color:#fff}.tag-row{flex-wrap:wrap;gap:.45rem;display:flex}.tag{--tag-cut:4px;--tag-rail:2.5px;border-top:none;border-right:none;border-left:var(--tag-rail) solid var(--accent,var(--royal-blue));border-bottom:var(--gutter-micro) solid color-mix(in srgb, var(--accent,var(--royal-blue)) 70%, #061427);min-height:24px;clip-path:polygon(0 0, calc(100% - var(--tag-cut)) 0, 100% var(--tag-cut), 100% 100%, 0 100%);background:color-mix(in srgb, var(--accent,var(--royal-blue)) 8%, #fff);color:color-mix(in srgb, var(--accent,var(--local-charcoal)) 62%, #000);font-family:var(--font-mono);letter-spacing:.01em;white-space:nowrap;filter:drop-shadow(1px 0 #0a192f29)drop-shadow(-1px 0 #0a192f29)drop-shadow(0 1px #0a192f29)drop-shadow(0 -1px #0a192f29)drop-shadow(-2px 2px #0a192f14);align-items:center;padding:.15rem .55rem;font-size:clamp(.72rem,1vw,.85rem);font-weight:700;transition:transform .15s,filter .15s;display:inline-flex;border-radius:0!important}.tag:hover{filter:drop-shadow(-3px 3px #0a192f24);transform:translateY(-1px)translate(1px)}.tag.accent{border-color:var(--accent,var(--royal-blue));background:color-mix(in srgb, var(--accent,var(--royal-blue)) 72%, #000);color:#fff}.section-dark .tag,[data-theme=dark] .tag{border-left-color:var(--accent,var(--royal-blue));border-bottom-color:var(--accent,var(--royal-blue));color:#fff;filter:drop-shadow(1px 0 #ffffff1f)drop-shadow(-1px 0 #ffffff1f)drop-shadow(0 1px #ffffff1f)drop-shadow(0 -1px #ffffff1f);background:#ffffff14}.section-dark .tag:hover,[data-theme=dark] .tag:hover{filter:drop-shadow(1px 0 0 #fff3) drop-shadow(-1px 0 0 #fff3) drop-shadow(0 1px 0 #fff3) drop-shadow(0 -1px 0 #fff3) drop-shadow(0 0 10px color-mix(in srgb, var(--accent,var(--royal-blue)) 30%, transparent));background:#ffffff24}.filter-bar{top:var(--nav-h);z-index:50;border:1px solid var(--line);border-radius:var(--radius-block);background:#fffffff7;gap:.85rem;margin-bottom:2rem;padding:.9rem;display:grid;position:sticky}.filter-ctrl-row{align-items:center;gap:.85rem;display:flex}.filter-ctrl-row .filter-search-row{flex:1}@media (width<=600px){.filter-bar{gap:.6rem;padding:.6rem}.filter-ctrl-row{flex-direction:column;align-items:stretch;gap:.6rem}}.filter-search-row{display:block}.filter-button-row{flex-wrap:wrap;align-items:center;gap:.7rem;display:flex}.filter-limit-row{border-top:1px solid #0a192f14;flex-wrap:wrap;align-items:center;gap:.55rem;padding-top:.75rem;display:flex}@media 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1.1rem}.sfc-note{color:#ffffff75;max-width:1240px;font-family:var(--font-sans);text-align:center;border-top:1px dashed #ffffff1a;margin:.55rem auto 0;padding-top:.6rem;font-size:.76rem;line-height:1.55}.sfc-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.25rem 1.5rem;max-width:1240px;margin:0 auto;display:flex}.sfc-brand,.sfc-links a{color:#ffffffb8;min-height:44px;font-family:var(--font-sans);align-items:center;gap:.6rem;font-size:.86rem;text-decoration:none;display:inline-flex}.sfc-links{flex-wrap:wrap;gap:0 1.25rem;display:flex}.sfc-links a:hover,.sfc-brand:hover{color:#7dd3fc}@media (width<=760px){.sfc-row{justify-content:center}}.site-footer{background:var(--deep-navy);color:#ffffffad;padding:5rem 6vw 2rem}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;display:grid}.footer-grid img{margin-bottom:1rem}.footer-col 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(width<=600px){:root{--card-cut:10px}.filter-bar{top:var(--nav-h-mobile)}.brand img{width:132px}.site-nav>.btn{display:none}.footer-grid{grid-template-columns:1fr}}.mdx-two-col{grid-template-columns:1fr 1fr;gap:1.5rem;margin:1.5rem 0;display:grid}@media (width<=768px){.mdx-two-col{grid-template-columns:1fr;gap:1rem}}.contact-pill,.contact-block{--pill-cut:8px;--pill-rail:var(--rail-std);border-top:none;border-right:none;border-left:var(--pill-rail) solid var(--accent,#0068ff);border-bottom:var(--pill-rail) solid color-mix(in srgb, var(--accent,#0068ff) 70%, #061427);min-height:40px;clip-path:polygon(0 0, calc(100% - var(--pill-cut)) 0, 100% var(--pill-cut), 100% 100%, 0 100%);color:var(--deep-navy);font-family:var(--font-mono);cursor:pointer;filter:drop-shadow(1px 0 #0a192f29)drop-shadow(-1px 0 #0a192f29)drop-shadow(0 1px #0a192f29)drop-shadow(0 -1px #0a192f29)drop-shadow(-3px 3px #0a192f1f);background:#fff;align-items:center;gap:.5rem;padding:.55rem 1.15rem;font-size:.88rem;font-weight:700;transition:transform .2s,filter .2s;display:inline-flex;border-radius:0!important}.contact-pill:hover,.contact-block:hover{filter:drop-shadow(-5px 5px #0a192f2e);transform:translateY(-2px)translate(1px)}.contact-pill.contact-zalo{--accent:#0068ff}.contact-pill.contact-fb{--accent:#8e24aa}.effect-isometric-lift{transition:transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s cubic-bezier(.2,.8,.2,1),border-color .2s!important}.effect-isometric-lift:hover{transform:translate(-3px,-3px)!important;box-shadow:-11px 11px #0a192f2e!important}.effect-tactile-press,.btn,.filter-btn,.tag-badge{transition:transform .12s cubic-bezier(.2,.8,.2,1),box-shadow .12s cubic-bezier(.2,.8,.2,1),border-color .15s,background-color 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var(--accent,var(--royal-blue)) 58%, #ffffff2e);backface-visibility:hidden;text-align:center;border-radius:0;align-content:center;justify-items:center;gap:.6rem;padding:1.2rem;display:grid;position:absolute;inset:0;box-shadow:inset 0 1px #ffffff29,inset 0 -18px 34px #00000029,0 16px 28px #0000003d}.principle-card-front{background:radial-gradient(circle at 82% 18%, #ffffff3d, transparent 18%), linear-gradient(180deg, color-mix(in srgb, var(--accent,var(--royal-blue)) 74%, #fff 8%), color-mix(in srgb, var(--accent,var(--royal-blue)) 58%, #061427 42%))}.principle-card-front:before,.principle-card-front:after{content:"";opacity:.78;pointer-events:none;width:18px;height:18px;position:absolute}.principle-card-front:before{border-top:2px solid #ffffffb8;border-right:2px solid #ffffffb8;top:.55rem;right:.55rem}.principle-card-front:after{border-left:var(--rail-micro) solid #ffffff57;border-bottom:var(--gutter-std) solid 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span{color:#ffffff9e;font-size:.82rem}.about-profile{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:1.25rem;margin-bottom:1.5rem;display:grid}.about-profile .section-head{flex-direction:column;grid-column:span 2;max-width:none;margin-bottom:0;display:flex}.about-portrait-card{background:#e5e7eb;border-bottom-color:#cbd5e1;border-left-color:#9ca3af;min-height:260px;padding:0}.about-portrait-card:hover{border-bottom-color:#94a3b8;border-left-color:#6b7280}.about-portrait-frame{background:var(--deep-navy);border:0;border-radius:0;height:100%;min-height:260px;position:relative;overflow:hidden}.about-portrait-frame img{object-fit:cover;object-position:50% 18%;width:100%;height:100%;position:absolute;inset:0}.about-copy{margin-bottom:1.25rem}.about-copy .card h2{margin-top:0;font-size:clamp(1.2rem,1.6vw,1.45rem)}.about-copy .card p+p{margin-top:.9rem}.about-foundation{flex-direction:column;flex:1;margin-top:1.25rem;margin-bottom:0;display:flex}.about-foundation .card{flex-direction:column;flex:1;padding:1.25rem 1.35rem 1.2rem 1.5rem;display:flex}.about-foundation .card h2{font-size:clamp(1.1rem,1.4vw,1.25rem)}.about-foundation .card p{font-size:clamp(.95rem,1.2vw,1.15rem);line-height:1.62}.project-list{flex-direction:column;gap:1rem;margin:.75rem 0 0;padding:0;list-style:none;display:flex}.project-copy{gap:.9rem;display:grid}.project-copy .card{padding:1.15rem 1.2rem 1rem 1.35rem}.project-copy .card h3{margin-bottom:.65rem}.project-copy .project-list{gap:.65rem;margin-top:.45rem}.project-copy .project-list li{padding-left:.8rem;line-height:1.45}.project-copy .project-list li strong{margin-bottom:.12rem;display:inline}.project-copy .project-list li br{content:"";margin-top:.18rem;display:block}.project-list li{border-left:2px solid var(--accent,var(--line));color:var(--ink-soft);padding-left:1rem;font-size:.9rem;line-height:1.6}.project-list li strong{color:var(--ink);margin-bottom:.2rem;font-size:.875rem;display:block}.about-tagline{color:var(--ink);letter-spacing:-.01em;margin:.5rem 0 1rem;font-size:1.35rem;font-weight:700}.about-quote{border-left:2.5px solid var(--royal-blue);color:var(--ink-soft);background:0 0;margin:0;padding:.8rem 1rem;font-size:.88rem;font-style:italic;line-height:1.65}.about-contact-actions{flex-wrap:wrap;gap:.75rem;margin-top:.85rem;display:flex}.contact-pill{--accent:var(--royal-blue);min-height:64px;color:color-mix(in srgb, var(--accent,var(--royal-blue)) 78%, #000);border:0;border-left:var(--rail-std) solid var(--accent);border-bottom:var(--gutter-std) solid color-mix(in srgb, var(--accent) 60%, #061427);box-shadow:var(--elev-1);transition:transform var(--card-pop-duration) var(--card-pop-ease), box-shadow var(--card-pop-duration) var(--card-pop-ease), background-color var(--card-pop-duration) ease;background:#fff;border-radius:0;flex:1 1 0;justify-content:flex-start;align-items:center;gap:.75rem;padding:.75rem 1rem;font-weight:850;line-height:1;text-decoration:none;display:inline-flex}.contact-logo{background:#fff;border-radius:0;flex:0 0 38px;place-items:center;width:38px;height:38px;display:inline-grid;overflow:hidden;box-shadow:0 8px 14px #0a192f24}.contact-logo img{object-fit:contain;width:100%;height:100%}.contact-facebook{--accent:#1877f2}.contact-facebook .contact-logo{background:#1877f2}.contact-zalo{--accent:#0068ff}.contact-zalo .contact-logo{background:#fff}.contact-email{--accent:#ea4335}.contact-email .contact-logo{padding:6px}.contact-pill:hover{background:color-mix(in srgb, var(--accent) 8%, #fff);box-shadow:var(--elev-low);transform:translateY(-4px)}.section-dark .about-tagline{color:#fffffff2}.section-dark .about-quote{color:#ffffffa6;border-color:#ffffff40}.about-task-grid{align-items:stretch;margin:1.25rem 0}.about-task-grid>.card:not(.about-contact-card){flex-direction:column;height:100%;min-height:0;display:flex}.about-task-grid>.card:not(.about-contact-card) p{flex:1}.about-contact-card{background:#fff;grid-column:1/-1;grid-template-columns:minmax(220px,.82fr) minmax(360px,1.18fr);align-items:center;gap:1.5rem;display:grid}.about-contact-card .about-contact-actions{margin-top:0}.qr-modal-overlay{z-index:200;backdrop-filter:blur(8px);opacity:1;visibility:visible;background:#0a192f9e;place-items:center;transition:opacity .3s,visibility linear;display:grid;position:fixed;inset:0}.qr-modal-overlay[aria-hidden=true]{opacity:0;visibility:hidden;pointer-events:none;backdrop-filter:none;transition:opacity .3s,visibility 0s linear .3s}.qr-modal{border-radius:var(--radius-block);width:90vw;max-width:380px;box-shadow:var(--elev-high);text-align:center;background:#fff;padding:2rem;transition:transform .3s cubic-bezier(.2,.7,.3,1);position:relative;transform:scale(1)}.qr-modal-overlay[aria-hidden=true] .qr-modal{transform:scale(.92)}.qr-modal img{border-radius:var(--radius-block);width:100%;max-width:280px;height:auto;margin:0 auto}.qr-modal-hint{color:var(--ink-soft);margin:1rem 0 0;font-size:.95rem}.qr-modal-close{border:1px solid var(--line);border-radius:var(--radius-tag);width:44px;min-width:44px;height:44px;min-height:44px;color:var(--deep-navy);cursor:pointer;background:#fff;font-size:1.4rem;line-height:1;transition:background .2s;position:absolute;top:.75rem;right:.75rem}.qr-modal-close:hover{background:var(--pale-ice)}.article-card,.resource-card{flex-direction:column;gap:1rem;text-decoration:none;display:flex}.resource-compact-card{max-width:800px;margin:0 auto;text-decoration:none;display:block}.resource-compact{background:linear-gradient(165deg, #fff 0%, color-mix(in srgb, var(--pale-ice,#ebf2fa) 26%, #fff) 100%);border:1px solid var(--line-soft);border-left:4px solid 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