:root{--ink:#143b38;--muted:#5c706a;--paper:#f8f8f2;--line:#dce2d7;--green:#dce9bf;--accent:#dce9bf;--orange:#d76d40;--white:#fff;--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit}button,input{font:inherit}button,a,input{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--orange);outline-offset:5px}img{max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.12;letter-spacing:-.045em}h1{font-size:clamp(2.8rem,5.9vw,5.7rem);font-weight:500;margin-bottom:25px}h1 em{font-family:Georgia,'Times New Roman',serif;font-weight:400}h2{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:500;margin-bottom:20px}h3{font-size:1.4rem;font-weight:600;letter-spacing:-.035em}p{color:var(--muted)}.wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}.site-header{border-bottom:1px solid var(--line);background:var(--paper)}.header-inner{min-height:98px;display:flex;align-items:center;gap:38px}.brand{text-decoration:none;display:inline-flex;align-items:center;white-space:nowrap;font-size:23px;font-weight:700;letter-spacing:-1.1px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--ink);color:var(--green);border-radius:50%;margin-right:10px;font-size:30px;line-height:1}.brand-period{color:var(--orange)}#main-nav{display:flex;gap:28px;margin-left:auto}#main-nav a{text-decoration:none;font-size:14px;color:var(--muted);padding:8px 0;position:relative}#main-nav a:hover,#main-nav a[aria-current]{color:var(--ink)}#main-nav a[aria-current]:after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--ink)}.header-cta{text-decoration:none;font-size:14px;font-weight:600;border:1px solid var(--line);padding:10px 16px;border-radius:7px;white-space:nowrap}.header-cta span{margin-left:17px}.header-cta:hover{background:var(--green)}.nav-toggle{display:none}.skip-link{position:absolute;top:-100px;left:20px;z-index:10;background:var(--ink);color:white;padding:12px 18px}.skip-link:focus{top:15px}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:54px;align-items:center;padding-block:80px 76px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--ink);margin-bottom:28px}.signal{display:inline-block;background:var(--orange);width:7px;height:7px;border-radius:50%;margin-right:9px}.lead{font-size:19px;line-height:1.6;max-width:460px}.actions{display:flex;gap:22px;align-items:center;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;gap:24px;text-decoration:none;font-size:14px;font-weight:600;border:1px solid transparent;border-radius:7px;padding:14px 20px;cursor:pointer;line-height:1.5}.primary{background:var(--ink);color:var(--paper)}.primary:hover{background:#24564b}.secondary{background:transparent;border-color:var(--line);color:var(--ink)}.secondary:hover{background:var(--green)}.text-link{font-size:14px;font-weight:600;text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:3px}.text-link span{margin-left:10px}.hero-note{font-size:12px;margin-top:34px}.hero-art{background:#e8eddf;border-radius:var(--radius);position:relative;overflow:hidden;border:1px solid #dce4d0}.diagram-label{font-size:10px;letter-spacing:.12em;font-weight:700;padding:22px 25px}.hero-art>img{width:100%;margin-top:-20px}.art-caption{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #d0dbc4;margin-inline:25px;padding:17px 0;font-size:10px;gap:12px;color:var(--muted)}.art-caption span:first-child{font-weight:700;letter-spacing:.08em}.strip{border-block:1px solid var(--line)}.strip-inner{display:flex;justify-content:space-between;align-items:center;gap:22px;padding-block:22px}.strip-inner>span:first-child{font-size:12px;color:var(--muted)}.strip strong{font-size:18px;letter-spacing:-.5px}.dot{color:#b3c0ad}.section{padding-block:76px}.section-heading{display:flex;justify-content:space-between;gap:60px;align-items:end;margin-bottom:35px}.section-heading .eyebrow{margin-bottom:15px}.section-heading h2{margin-bottom:0}.section-heading>p{max-width:335px;margin-bottom:2px;font-size:14px}.cards{display:grid;gap:22px}.three{grid-template-columns:repeat(3,1fr)}.card{background:var(--white);border:1px solid var(--line);padding:30px;border-radius:12px}.card-link{display:flex;flex-direction:column;text-decoration:none;transition:transform .2s,border-color .2s}.card-link:hover{transform:translateY(-4px);border-color:#9bad88}.card-number{color:var(--orange);font-family:Georgia,serif;font-size:26px;margin-bottom:39px;display:block}.card p{font-size:14px;line-height:1.8}.card-bottom{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:auto;padding-top:21px;font-size:12px;font-weight:600}.principle{display:grid;grid-template-columns:1.4fr 1fr;align-items:center;background:var(--green);padding:54px 64px;margin-bottom:80px;border-radius:16px;gap:70px}.principle p:not(.eyebrow){max-width:550px}.principle .eyebrow{margin-bottom:20px}.principle img{justify-self:center;width:280px}.site-footer{background:var(--ink);color:var(--paper);padding-top:45px}.site-footer .brand-mark{background:var(--green);color:var(--ink)}.site-footer p{color:#becfc3;font-size:13px;margin:15px 0 0}.footer-main{display:flex;align-items:center;justify-content:space-between;gap:30px;padding-bottom:36px}.footer-links{display:flex;gap:28px}.footer-links a{color:#dbe3d9;font-size:13px;text-decoration:none}.footer-links a:hover{text-decoration:underline}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #3f5b52;padding-block:20px;color:#b7c9bb;font-size:11px}.page-hero{padding-block:74px 52px}.page-hero h1{font-size:clamp(2.8rem,5.2vw,4.9rem)}.page-hero .lead{max-width:600px}.top-tight{padding-top:0}.filter-bar{display:flex;flex-wrap:wrap;gap:10px;border-top:1px solid var(--line);padding-top:28px}.chip{border:1px solid var(--line);border-radius:999px;padding:8px 20px;background:transparent;color:var(--ink);cursor:pointer;font-size:13px}.chip:hover{background:#e8eddf}.chip.active{background:var(--ink);border-color:var(--ink);color:var(--paper)}.filter-status{font-size:12px;margin:18px 0 24px}.muted{color:var(--muted);font-size:13px}.topic-grid{grid-template-columns:repeat(3,1fr)}.topic .tag{margin-bottom:30px;display:block}.topic h2{font-size:25px}.tag{font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--muted)}.takeaway{padding-top:18px;border-top:1px solid var(--line);margin-bottom:0}.takeaway strong{color:var(--ink)}[hidden]{display:none!important}.next-step{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-top:60px;padding-top:40px;border-top:1px solid var(--line)}.next-step h2{font-size:28px;margin:0}.next-step .eyebrow{margin-bottom:10px}.architecture-panel{background:#e8eddf;border:1px solid var(--line);border-radius:16px;margin-bottom:70px;padding-bottom:16px}.architecture-panel>p{margin:0 28px}.request-diagram{width:100%}.journey{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:35px 60px}.journey li{display:flex;gap:22px;border-top:1px solid var(--line);padding-top:26px}.step-index{font:24px Georgia,serif;color:var(--orange)}.journey p{font-size:14px;margin-bottom:0}.callout{background:var(--green);border-radius:12px;padding:35px;margin-top:40px}.callout .eyebrow{display:block;margin-bottom:14px}.callout p{max-width:750px;margin-bottom:0}.lab-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:65px;align-items:start}.quiz-panel{border:1px solid var(--line);border-radius:14px;background:white;padding:32px}.quiz-top{display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:30px}.quiz-top>span:last-child{font-size:11px;color:var(--muted)}.quiz-panel>p{font-size:14px}.quiz-panel h2{font-size:30px}fieldset{margin:30px 0 0;padding:0 0 28px;border:0;border-bottom:1px solid var(--line);min-width:0}legend{font-weight:600;font-size:15px;margin-bottom:15px;line-height:1.6}legend span{color:var(--orange);margin-right:10px;font-family:Georgia,serif;font-size:20px}.answer{display:flex;align-items:start;gap:10px;padding:10px 12px;border:1px solid var(--line);margin-top:9px;border-radius:6px;font-size:13px;cursor:pointer}.answer:hover{background:var(--paper)}.answer:has(input:checked){border-color:var(--ink);background:#edf2e4}.answer input{accent-color:var(--ink);margin-top:5px;flex-shrink:0}.question-feedback{font-size:13px;margin:14px 0 0}.question-feedback.correct{color:#235b36}.question-feedback.incorrect{color:#933c1c}.quiz-result{margin-top:25px;background:var(--green);padding:20px;border-radius:8px;font-weight:600}.lab-aside{padding-top:25px}.lab-aside h2{font-size:32px}.lab-aside .eyebrow{margin-bottom:22px}.lab-aside img{width:220px;margin:30px auto}.lab-aside p{font-size:14px}.about-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:90px;align-items:start}.body-large{font-size:19px}.about-grid>div>p{line-height:1.8}.about-note{padding:36px;background:var(--green);border-radius:12px}.about-note .eyebrow{display:block;margin-bottom:25px}.check-list{padding:0;list-style:none;margin:30px 0 0}.check-list li{border-top:1px solid #bfcea8;padding:13px 0;font-size:13px}.check-list li:before{content:'✓';margin-right:12px}.error-page{padding-block:65px 100px;max-width:900px}.error-page h1{font-size:clamp(2.6rem,5vw,4rem)}.error-number{font-size:clamp(110px,23vw,200px);font-weight:600;line-height:1;color:#c5d4b3;letter-spacing:-.1em;margin-bottom:25px}.error-number span{font-size:.65em;color:var(--orange);display:inline-block;margin-left:35px}.error-page .lead{max-width:600px}
@media(min-width:1500px){.hero{padding-block:100px}.hero h1{font-size:6rem}}@media(max-width:1050px){.wrap{width:calc(100% - 56px)}.header-inner{gap:22px}#main-nav{gap:20px}.header-cta{display:none}.hero{gap:30px;padding-block:60px}.hero .actions{gap:18px}.hero .button{gap:14px;padding:13px 16px}.hero .text-link{font-size:12px}.principle{padding:40px;gap:30px}.topic-grid{grid-template-columns:repeat(2,1fr)}.lab-grid{gap:32px;grid-template-columns:1.65fr 1fr}.about-grid{gap:40px}.three{gap:15px}.card{padding:25px}.strip-inner{gap:15px}.strip-inner>span:first-child{max-width:120px}}@media(max-width:740px){.wrap{width:calc(100% - 40px)}.header-inner{min-height:78px;flex-wrap:wrap;gap:0;justify-content:space-between}.brand{font-size:21px}.nav-toggle{display:block;background:transparent;border:1px solid var(--line);padding:7px 12px;border-radius:6px;font-size:12px;color:var(--ink)}.nav-toggle span{margin-left:10px}#main-nav{width:100%;margin:0;flex-wrap:wrap;gap:10px 24px;padding-bottom:15px}body.js-ready #main-nav:not(.open){display:none}#main-nav a{font-size:13px}.hero{grid-template-columns:1fr;gap:35px;padding-block:45px}.hero .eyebrow{margin-bottom:24px}.hero h1{font-size:clamp(3.2rem,11vw,4.7rem)}.lead{font-size:17px}.hero-note{margin-top:23px}.hero-art{max-width:550px;width:100%;justify-self:center}.hero-art>img{max-height:410px;object-fit:contain}.strip-inner{justify-content:center;flex-wrap:wrap;gap:14px 20px}.strip-inner>span:first-child{flex-basis:100%;max-width:none;text-align:center}.strip strong{font-size:15px}.dot{display:none}.section{padding-block:48px}.section-heading{display:block;margin-bottom:25px}.section-heading>p{max-width:none;margin-top:20px}.three,.topic-grid{grid-template-columns:1fr}.card-number{margin-bottom:25px}.card-link{min-height:260px}.card h3{font-size:23px}.principle{grid-template-columns:1fr;padding:32px;gap:25px;margin-bottom:45px}.principle img{width:200px}.principle h2{font-size:31px}.footer-main{align-items:start;flex-direction:column;gap:28px}.footer-links{flex-wrap:wrap;gap:15px 25px}.footer-bottom{font-size:10px;gap:15px}.page-hero{padding-block:45px 35px}.page-hero h1{font-size:clamp(2.7rem,9vw,4rem)}.top-tight{padding-top:0}.filter-bar{gap:8px}.chip{font-size:12px;padding:8px 15px}.topic .tag{margin-bottom:22px}.next-step{align-items:start;flex-direction:column;margin-top:40px;padding-top:30px}.next-step h2{font-size:27px}.journey{grid-template-columns:1fr;gap:25px}.architecture-panel{margin-bottom:40px;overflow:hidden}.request-diagram{min-width:700px;max-width:none;width:150%;margin-left:-20%}.architecture-panel .muted{font-size:11px}.callout{padding:28px}.lab-grid,.about-grid{grid-template-columns:1fr;gap:35px}.quiz-panel{padding:24px}.quiz-top{gap:10px}.quiz-panel h2{font-size:27px}.quiz-top .tag{font-size:9px}.quiz-top>span:last-child{font-size:10px}.lab-aside{padding-top:0}.about-note{padding:30px}.error-page{padding-block:45px 70px}.error-number{margin-top:35px}.error-page .eyebrow{margin-bottom:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}