/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, 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;--spacing:.25rem;--radius-md:.375rem;--radius-lg:.5rem;--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,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{.start{inset-inline-start:var(--spacing)}.table{display:table}}:root{--ink:#102038;--ink-soft:#40536d;--muted:#64758d;--blue:#2457e6;--blue-deep:#173faf;--ice:#f3f8ff;--ice-2:#e8f1ff;--mint:#65dfba;--mint-soft:#dff9f0;--white:#fff;--line:#dce7f6;--line-strong:#c7d8ef;--shadow:0 22px 60px #23488f1f;--shadow-soft:0 12px 34px #23488f14;--radius-lg:32px;--radius-md:22px;--radius-sm:14px;--sans:Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--mono:"SFMono-Regular", "Cascadia Code", Consolas, monospace}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--ice)}body{color:var(--ink);font-family:var(--sans);background:linear-gradient(#4071be0b 1px,#0000 1px) 0 0/40px 40px,linear-gradient(90deg,#4071be0b 1px,#0000 1px) 0 0/40px 40px,linear-gradient(135deg,#fbfdff 0%,#f1f7ff 54%,#eef8f7 100%);margin:0;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}a:focus-visible,summary:focus-visible{outline-offset:4px;outline:3px solid #2457e659}.shell{width:min(1180px,100% - 48px);margin-inline:auto}.site-header{z-index:20;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fafdffc7;border-bottom:1px solid #8ba5c947;position:relative}.header-inner{justify-content:space-between;align-items:center;gap:32px;min-height:82px;display:flex}.brand{letter-spacing:-.02em;align-items:center;gap:13px;font-size:17px;font-weight:760;display:inline-flex}.brand>span:last-child{gap:1px;display:grid}.brand small{color:#70819a;font-family:var(--mono);letter-spacing:.11em;font-size:8px;font-weight:600}.brand-mark{background:radial-gradient(circle at 13px 14px, var(--mint) 0 4px, transparent 4.5px), radial-gradient(circle at 28px 28px, #a7c4ff 0 4px, transparent 4.5px), linear-gradient(145deg, var(--blue), var(--blue-deep));border-radius:13px;flex:none;width:42px;height:42px;position:relative;box-shadow:0 10px 24px #2457e63d}.brand-mark:after{content:"";border:1.5px solid #ffffffb8;border-radius:7px;position:absolute;inset:10px;transform:rotate(45deg)}.desktop-nav{color:#53657d;align-items:center;gap:34px;font-size:14px;font-weight:620;display:flex}.desktop-nav a{transition:color .16s,transform .16s}.desktop-nav a:hover{color:var(--blue);transform:translateY(-1px)}.nav-cta{color:var(--blue);background:#ffffffc7;border:1px solid #2457e63d;border-radius:999px;padding:10px 18px}.mobile-menu{display:none;position:relative}.mobile-menu summary{color:var(--blue);border:1px solid var(--line-strong);background:var(--white);cursor:pointer;border-radius:999px;padding:9px 14px;font-size:14px;font-weight:680;list-style:none}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{border:1px solid var(--line);background:var(--white);min-width:180px;box-shadow:var(--shadow-soft);border-radius:16px;gap:5px;padding:12px;display:grid;position:absolute;top:48px;right:0}.mobile-menu nav a{border-radius:10px;padding:9px 10px;font-size:14px}.mobile-menu nav a:hover{color:var(--blue);background:var(--ice)}.hero{grid-template-columns:1.02fr .98fr;align-items:center;gap:72px;min-height:620px;padding-block:82px 76px;display:grid}.hero-copy{z-index:2;position:relative}.eyebrow{width:fit-content;color:var(--blue-deep);letter-spacing:.02em;background:#ffffffb8;border:1px solid #ccdcf7;border-radius:999px;align-items:center;gap:9px;margin:0 0 22px;padding:7px 12px;font-size:12px;font-weight:680;display:inline-flex}.eyebrow:before{content:"";background:var(--mint);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 5px #65dfba2b}.hero h1,.page-hero h1,.article-header h1{letter-spacing:-.055em;margin:0;font-size:clamp(48px,5.4vw,74px);font-weight:820;line-height:1.07}.hero h1 span{width:fit-content;color:var(--blue);display:block;position:relative}.hero h1 span:after{content:"";background:var(--mint);opacity:.82;border-radius:999px;height:6px;position:absolute;bottom:-5px;left:2px;right:2px;transform:skew(-18deg)}.hero-lead{max-width:590px;color:var(--muted);margin:28px 0 32px;font-size:18px;line-height:1.8}.hero-actions{flex-wrap:wrap;align-items:center;gap:24px;display:flex}.button{border-radius:14px;justify-content:center;align-items:center;gap:10px;min-height:50px;padding:0 22px;font-size:15px;font-weight:720;transition:background .16s,color .16s,border-color .16s,transform .16s;display:inline-flex}.button:hover{transform:translateY(-2px)}.button-primary{color:var(--white);background:var(--blue);box-shadow:0 15px 30px #2457e638}.button-primary:hover{background:var(--blue-deep)}.button-secondary{color:var(--blue);background:var(--white);border:1px solid #b9cef2}.button-secondary:hover{border-color:var(--blue)}.text-link{color:var(--blue-deep);font-size:14px;font-weight:680}.text-link:hover{color:var(--blue)}.proof-list{color:#718096;align-items:center;gap:20px;margin:29px 0 0;padding:0;font-size:13px;list-style:none;display:flex}.proof-list li{align-items:center;gap:8px;display:flex}.proof-list li:before{content:"";background:var(--mint);border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #65dfba24}.lab-card{border-radius:var(--radius-lg);min-width:0;height:426px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffe0;border:1px solid #aac3e394;padding:22px;position:relative}.lab-window-bar{color:#7a8ca4;height:34px;font-family:var(--mono);justify-content:space-between;align-items:center;padding-inline:5px;font-size:10px;display:flex}.window-dots{gap:7px;display:flex}.window-dots i{background:#cbd8e9;border-radius:50%;width:8px;height:8px}.window-dots i:nth-child(2){background:#8bb0f8}.window-dots i:nth-child(3){background:var(--mint)}.formula-stage{color:#f7fbff;background:linear-gradient(#ffffff13 1px,#0000 1px) 0 0/32px 32px,linear-gradient(90deg,#ffffff13 1px,#0000 1px) 0 0/32px 32px,linear-gradient(145deg,#173fba,#2457e6 56%,#2b71d4);border-radius:22px;height:338px;padding:34px 30px 24px;position:relative;overflow:hidden}.formula-stage:after{content:"";border:38px solid #65dfba33;border-radius:50%;width:210px;height:210px;position:absolute;bottom:-88px;right:-74px}.formula-label{font-family:var(--mono);letter-spacing:.08em;background:#ffffff1a;border:1px solid #ffffff40;border-radius:8px;padding:7px 10px;font-size:10px;display:inline-flex}.formula{letter-spacing:-.02em;margin:32px 0 0;font-family:Georgia,Times New Roman,serif;font-size:clamp(30px,3vw,42px)}.formula em{color:var(--mint);font-style:normal}.chart{border-bottom:1px solid #ffffff57;border-left:1px solid #ffffff57;width:268px;height:128px;position:absolute;bottom:28px;right:25px}.bell-curve{position:absolute;inset:8px 8px 0 10px;overflow:hidden}.bell-curve:before{content:"";border:3px solid var(--mint);border-color:var(--mint) transparent transparent;filter:drop-shadow(0 0 7px #65dfba59);border-radius:50%;width:360px;height:170px;position:absolute;top:42px;left:-48px;transform:scaleY(1.8)}.threshold{border-left:1px dashed #ffffffb8;width:1px;height:87px;position:absolute;bottom:0;right:63px}.threshold span{font-family:Georgia,serif;font-size:14px;position:absolute;top:-21px;left:-4px}.concept-note{color:#365d5a;background:#f7fffc;border:1px solid #cfe3df;border-radius:17px;gap:4px;width:230px;padding:16px 18px;display:grid;position:absolute;bottom:-25px;left:-34px;box-shadow:0 15px 35px #265f5b1f}.concept-note strong{color:#1d433f;font-size:12px}.concept-note span{font-family:var(--mono);font-size:10px}.section{padding-block:80px}.section-heading{justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px;display:flex}.section-kicker{color:#71829a;font-family:var(--mono);letter-spacing:.12em;margin:0 0 10px;font-size:11px;font-weight:720}.section-heading h2,.featured-section h2,.principle-band h2,.library-section h2,.center-cta h2{letter-spacing:-.04em;margin:0;font-size:clamp(30px,3.2vw,44px);line-height:1.18}.topic-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.topic-card{border-radius:var(--radius-md);min-height:230px;box-shadow:var(--shadow-soft);background:#ffffffd1;border:1px solid #a7c1e185;padding:24px;transition:border-color .16s,transform .16s,box-shadow .16s;position:relative}.topic-card:hover{border-color:#9cbcf5;transform:translateY(-4px);box-shadow:0 18px 42px #23488f21}.topic-code,.resource-card>span{color:var(--blue);font-family:var(--mono);font-size:10px;font-weight:700}.topic-card h3,.resource-card h3{letter-spacing:-.025em;margin:28px 0 10px;font-size:21px}.topic-card p,.resource-card p{color:var(--muted);margin:0;font-size:14px;line-height:1.7}.card-arrow{color:#7d92b2;font-size:19px;position:absolute;bottom:18px;right:22px}.featured-section{border-radius:var(--radius-lg);box-shadow:var(--shadow);background:#ffffffd6;border:1px solid #a7c1e18f;grid-template-columns:.82fr 1.18fr;gap:56px;margin-block:34px 90px;padding:30px;display:grid}.series-visual{min-height:430px;color:var(--white);background:linear-gradient(#ffffff14 1px,#0000 1px) 0 0/30px 30px,linear-gradient(90deg,#ffffff14 1px,#0000 1px) 0 0/30px 30px,linear-gradient(145deg,#173fba,#2457e6);border-radius:24px;padding:28px;position:relative;overflow:hidden}.series-visual:before,.series-visual:after{content:"";border-radius:50%;position:absolute}.series-visual:before{border:46px solid #65dfba2e;width:270px;height:270px;top:-90px;right:-80px}.series-visual:after{border:32px solid #ffffff1a;width:180px;height:180px;bottom:-95px;left:-90px}.series-visual span{font-family:var(--mono);letter-spacing:.09em;opacity:.75;font-size:11px}.series-visual strong{color:var(--mint);font-family:Georgia,serif;font-size:230px;font-weight:400;line-height:1;position:absolute;bottom:-5px;right:35px}.series-content{padding-block:28px}.section-intro{color:var(--muted);margin:18px 0 25px}.lesson-list{margin:0 0 28px;padding:0;list-style:none}.lesson-list li{border-bottom:1px solid var(--line)}.lesson-list li:first-child{border-top:1px solid var(--line)}.lesson-list a{color:var(--ink-soft);justify-content:space-between;align-items:center;gap:20px;padding:14px 3px;font-size:14px;font-weight:640;display:flex}.lesson-list a:hover{color:var(--blue)}.reading-time{color:#8492a6;font-family:var(--mono);flex:none;font-size:9px;font-weight:500}.principle-band{color:#385a58;background:#e1faf2ad;border:1px solid #cae8df;border-radius:20px;grid-template-columns:1.1fr 1.5fr auto;align-items:center;gap:36px;margin-bottom:92px;padding:28px 30px;display:grid}.principle-band h2{font-size:25px}.principle-band p{margin:0;font-size:13px}.site-footer{color:#d9e6fa;background:#102038}.footer-inner{grid-template-columns:1.4fr 1fr;align-items:start;gap:50px;min-height:260px;padding-block:62px 32px;display:grid}.footer-brand{color:var(--white);font-size:20px;font-weight:760}.footer-inner>div p{color:#9eb0c9;max-width:430px;margin:12px 0 0;font-size:14px}.footer-inner nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 30px;font-size:13px;display:grid}.footer-inner nav a:hover{color:var(--mint)}.copyright{color:#7285a1;font-family:var(--mono);border-top:1px solid #ffffff1f;grid-column:1/-1;margin:0;padding-top:30px;font-size:10px}.page-hero{padding-block:100px 72px}.page-hero.compact{max-width:940px}.page-hero h1{max-width:900px;font-size:clamp(45px,5vw,68px)}.page-hero>p:last-child{max-width:740px;color:var(--muted);margin:28px 0 0;font-size:18px;line-height:1.8}.library-shell{grid-template-columns:220px minmax(0,1fr);align-items:start;gap:68px;padding-bottom:100px;display:grid}.library-nav{border:1px solid var(--line);background:#ffffffc7;border-radius:18px;gap:4px;padding:18px;display:grid;position:sticky;top:24px}.library-nav>p{color:#73829a;font-family:var(--mono);letter-spacing:.1em;margin:0 0 10px;padding:0 9px;font-size:10px}.library-nav a{color:var(--ink-soft);border-radius:10px;gap:10px;padding:10px 9px;font-size:13px;font-weight:620;display:flex}.library-nav a:hover{color:var(--blue);background:var(--ice)}.library-nav a span{color:#91a1b9;font-family:var(--mono);font-size:10px}.library-content{gap:82px;min-width:0;display:grid}.library-section{scroll-margin-top:30px}.resource-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.resource-card{border:1px solid var(--line);background:#ffffffd1;border-radius:18px;min-height:210px;padding:23px;transition:border-color .16s,transform .16s}a.resource-card:hover{border-color:#9cbcf5;transform:translateY(-3px)}.resource-card.is-coming{background:#f7faff94}.resource-card h3{margin-top:24px;font-size:18px}.article-shell{padding-block:72px 110px}.article-header{grid-template-columns:minmax(0,1.35fr) minmax(250px,.65fr);align-items:center;gap:72px;padding-bottom:72px;display:grid}.breadcrumbs{color:#70819a;gap:10px;margin-bottom:28px;font-size:12px;display:flex}.breadcrumbs a:hover{color:var(--blue)}.article-header h1{font-size:clamp(44px,5vw,68px)}.article-deck{max-width:720px;color:var(--muted);margin:26px 0;font-size:18px;line-height:1.8}.article-meta{color:#7788a0;font-family:var(--mono);flex-wrap:wrap;gap:18px;font-size:10px;display:flex}.article-meta span{border:1px solid var(--line-strong);background:#ffffffb3;border-radius:999px;padding:7px 10px}.article-cover{object-fit:cover;object-position:top;border:1px solid var(--line);width:100%;max-height:440px;box-shadow:var(--shadow);border-radius:24px}.article-layout{grid-template-columns:210px minmax(0,760px);justify-content:center;align-items:start;gap:80px;display:grid}.article-toc{border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);gap:4px;padding:18px 0;display:grid;position:sticky;top:24px}.article-toc>p{color:#71829a;font-family:var(--mono);letter-spacing:.1em;margin:0 0 8px;font-size:10px}.article-toc a{color:var(--ink-soft);grid-template-columns:26px 1fr;gap:8px;padding:8px 0;font-size:12px;display:grid}.article-toc a:hover{color:var(--blue)}.article-toc a span{color:#91a1b9;font-family:var(--mono);font-size:9px}.article-content{min-width:0}.article-content h2{letter-spacing:-.035em;margin:0;font-size:clamp(27px,3vw,38px);line-height:1.25}.article-intro{margin-bottom:78px}.article-intro blockquote{color:#244e49;border-left:4px solid var(--mint);background:var(--mint-soft);border-radius:0 16px 16px 0;margin:26px 0;padding:24px 28px;font-size:20px;line-height:1.7}.article-intro>p{color:var(--ink-soft);font-size:16px;line-height:1.9}.lesson-section{border-top:1px solid var(--line-strong);padding:78px 0 26px;scroll-margin-top:24px}.lesson-heading{grid-template-columns:54px minmax(0,1fr);gap:20px;margin-bottom:32px;display:grid}.lesson-heading>span{color:var(--blue);font-family:var(--mono);font-size:13px;font-weight:700}.lesson-heading p{color:var(--muted);margin:12px 0 0;line-height:1.8}.lesson-section>img{border:1px solid var(--line);width:min(100%,640px);box-shadow:var(--shadow-soft);border-radius:20px;margin-inline:auto}.key-point{background:#f7fffc;border:1px solid #cfe3df;border-radius:16px;margin-top:28px;padding:22px 24px}.key-point strong{color:#22564e}.key-point p{color:#41665f;margin:8px 0 0}.next-step{border:1px solid var(--line);background:#fffc;border-radius:22px;margin-top:80px;padding:36px}.next-step ol{color:var(--ink-soft);margin:24px 0 30px;padding-left:24px}.next-step li{margin-block:9px}.about-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding-bottom:100px;display:grid}.about-grid article{border:1px solid var(--line);background:#ffffffd1;border-radius:22px;min-height:280px;padding:28px}.about-grid span{color:var(--blue);font-family:var(--mono);font-size:11px}.about-grid h2{letter-spacing:-.03em;margin:56px 0 12px;font-size:24px}.about-grid p{color:var(--muted);margin:0}.center-cta{text-align:center;border:1px solid var(--line);background:radial-gradient(circle at 85% 20%,#65dfba38,#0000 26%),#ffffffd1;border-radius:28px;margin-bottom:100px;padding:64px}.center-cta p:not(.section-kicker){max-width:650px;color:var(--muted);margin:18px auto 26px}.policy-content{gap:18px;max-width:860px;padding-bottom:110px;display:grid}.policy-content article{border:1px solid var(--line);background:#ffffffd1;border-radius:20px;padding:30px}.policy-content h2{letter-spacing:-.03em;margin:0 0 16px;font-size:24px}.policy-content p,.policy-content li{color:var(--ink-soft);line-height:1.9}.policy-content p{margin:0}.policy-content ul{margin:0;padding-left:22px}@media (width<=980px){.hero{grid-template-columns:1fr;gap:62px}.lab-card{width:min(100%,650px);margin-inline:auto}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.featured-section{grid-template-columns:.78fr 1.22fr;gap:36px}.principle-band{grid-template-columns:1fr 1.25fr}.principle-band .text-link{grid-column:1/-1}.library-shell{grid-template-columns:1fr;gap:36px}.library-nav{grid-template-columns:repeat(4,minmax(0,1fr));position:static}.library-nav>p{grid-column:1/-1}.library-nav a{display:grid}.article-header{grid-template-columns:1fr 270px;gap:38px}.article-layout{grid-template-columns:1fr}.article-toc{grid-template-columns:repeat(3,minmax(0,1fr));position:static}.article-toc>p{grid-column:1/-1}}@media (width<=720px){.shell{width:min(100% - 32px,1180px)}.header-inner{min-height:72px}.brand{font-size:15px}.brand small{display:none}.brand-mark{border-radius:11px;width:36px;height:36px}.desktop-nav{display:none}.mobile-menu{display:block}.hero{min-height:auto;padding-block:58px 78px}.hero h1,.page-hero h1,.article-header h1{font-size:clamp(42px,12vw,58px)}.hero-lead,.page-hero>p:last-child,.article-deck{font-size:16px}.proof-list{flex-wrap:wrap;gap:13px}.lab-card{height:360px;padding:16px}.formula-stage{height:288px;padding:27px 22px}.formula{font-size:29px}.chart{width:230px}.concept-note{bottom:-35px;left:12px}.section{padding-block:66px}.section-heading{align-items:start}.topic-grid,.resource-grid,.about-grid{grid-template-columns:1fr}.topic-card{min-height:190px}.featured-section{grid-template-columns:1fr;padding:18px}.series-visual{min-height:260px}.series-visual strong{font-size:170px}.series-content{padding:20px 6px 8px}.principle-band{grid-template-columns:1fr;padding:24px}.principle-band .text-link{grid-column:auto}.footer-inner{grid-template-columns:1fr;gap:32px}.copyright{grid-column:auto}.page-hero{padding-block:72px 54px}.library-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.article-shell{padding-block:50px 82px}.article-header{grid-template-columns:1fr;gap:34px}.article-cover{width:min(100%,360px)}.article-toc{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-heading{grid-template-columns:38px minmax(0,1fr)}.article-intro blockquote{padding:20px;font-size:17px}.next-step,.center-cta{padding:28px 22px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}