@font-face{font-family:"Atkinson";src:url("fonts/atkinson.woff") format("woff");font-weight:300 800;font-display:swap}
@font-face{font-family:"Merriweather";src:url("fonts/merriweather.woff") format("woff");font-weight:800;font-display:swap}
:root{--paper:#fff;--soft:#f4f7f9;--blue-soft:#edf4fb;--ink:#172631;--muted:#53636d;--line:#cad5dc;--blue:#1267b1;--blue-dark:#0d4d84;--red:#b83737;--max:1240px;--reading:720px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Atkinson",Arial,sans-serif;font-size:18px;line-height:1.55}
img{display:block;max-width:100%;height:auto}
a{color:var(--blue-dark);text-underline-offset:.18em}
a:hover{color:var(--red)}
:focus-visible{outline:3px solid var(--red);outline-offset:4px}
.skip{position:absolute;left:-9999px;top:0}.skip:focus{left:1rem;top:1rem;z-index:20;background:#fff;padding:.65rem 1rem;border:2px solid var(--ink)}
.shell{width:min(calc(100% - 48px),var(--max));margin-inline:auto}
.site-header{border-bottom:1px solid var(--line);background:#fff}
.header-row{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:2rem}
.brand{display:inline-flex;align-items:center;gap:.7rem;color:var(--ink);font-family:"Merriweather",Georgia,serif;font-weight:800;text-decoration:none}
.brand-mark{width:31px;height:31px;border:2px solid var(--ink);display:grid;place-items:center;color:var(--blue);font-family:"Atkinson",sans-serif;font-size:20px}
.desktop-nav{display:flex;gap:1.5rem;align-items:center;font-size:.95rem}.desktop-nav a{color:var(--ink);text-decoration:none;border-bottom:2px solid transparent}.desktop-nav a[aria-current="page"]{border-color:var(--blue);color:var(--blue-dark)}
.mobile-nav{display:none}.mobile-nav summary{cursor:pointer;font-weight:700;padding:.6rem 0}.mobile-nav nav{display:grid;gap:.2rem;padding:.5rem 0 1rem}.mobile-nav a{padding:.65rem 0;color:var(--ink)}
.kicker{margin:0 0 .75rem;color:var(--blue-dark);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}
h1,h2,h3{font-family:"Merriweather",Georgia,serif;line-height:1.12;margin-top:0}
h1{font-size:clamp(2.55rem,6vw,5.6rem);letter-spacing:-.045em;margin-bottom:1.2rem;max-width:13ch}
h2{font-size:clamp(1.75rem,3.6vw,2.8rem);letter-spacing:-.025em;margin-bottom:1rem}
h3{font-size:1.24rem;margin-bottom:.55rem}
p{margin-top:0}.lead{font-size:clamp(1.15rem,1.8vw,1.38rem);color:var(--muted);max-width:62ch}
.cover-copy{padding:clamp(3.25rem,7vw,7rem) 0 2.2rem;max-width:840px}
.visual-plate{aspect-ratio:16/6;border:1px solid var(--line);overflow:hidden;background:var(--blue-soft)}.visual-plate img{width:100%;height:100%;object-fit:cover}
.task-index{padding:2.3rem 0 5rem}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:2rem;border-bottom:2px solid var(--ink);padding-bottom:1rem;margin-bottom:0}.section-head p{margin:0;max-width:48ch;color:var(--muted)}
.task-list{list-style:none;margin:0;padding:0}.task-list li{border-bottom:1px solid var(--line)}
.task-link{display:grid;grid-template-columns:90px minmax(220px,.85fr) 1.25fr 46px;gap:1.3rem;align-items:center;padding:1.45rem 0;color:var(--ink);text-decoration:none}.task-link:hover{color:var(--ink);background:linear-gradient(to right,transparent,var(--blue-soft),transparent)}
.task-no{font-family:"Merriweather",Georgia,serif;color:var(--blue);font-size:1.5rem}.task-title{font-weight:800;font-size:1.18rem}.task-desc{color:var(--muted)}.task-arrow{font-size:1.8rem;color:var(--blue)}
.note-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--soft);padding:1.4rem 0}.note-strip .shell{display:grid;grid-template-columns:190px 1fr;gap:2rem}.note-strip strong{color:var(--red)}.note-strip p{margin:0}
.page-hero{padding:clamp(2.7rem,6vw,6rem) 0 3.5rem}
.split-hero{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:clamp(2.5rem,6vw,6rem);align-items:center}.split-hero.reverse{grid-template-columns:minmax(360px,.9fr) minmax(0,1.1fr)}.split-hero.reverse .hero-media{order:-1}
.hero-copy h1{font-size:clamp(2.4rem,5vw,4.7rem)}.hero-media{aspect-ratio:4/3;border:1px solid var(--line);background:var(--blue-soft);overflow:hidden}.hero-media img{width:100%;height:100%;object-fit:cover}
.wide-intro{padding:clamp(3rem,6vw,5rem) 0 2rem}.wide-intro .lead{max-width:54ch}.wide-media{aspect-ratio:16/7;border:1px solid var(--line);overflow:hidden;margin-top:2rem}.wide-media img{width:100%;height:100%;object-fit:cover}
.content{padding:3.5rem 0 6rem}.reading{max-width:var(--reading)}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:clamp(3rem,7vw,7rem);align-items:start}.side-note{border-left:4px solid var(--blue);padding:0 0 0 1.2rem}.side-note h2{font-family:"Atkinson",sans-serif;font-size:1rem;text-transform:uppercase;letter-spacing:.06em}.side-note p{color:var(--muted);font-size:.95rem}
.step-list{counter-reset:steps;list-style:none;padding:0;margin:2rem 0}.step-list>li{counter-increment:steps;display:grid;grid-template-columns:56px 1fr;gap:1rem;padding:1.5rem 0;border-top:1px solid var(--line)}.step-list>li::before{content:counter(steps,decimal-leading-zero);font-family:"Merriweather",serif;color:var(--blue);font-weight:800;font-size:1.35rem}.step-list p:last-child{margin-bottom:0}
.check-list{list-style:none;padding:0;margin:1.4rem 0}.check-list li{padding:.85rem 0 .85rem 2.2rem;border-bottom:1px solid var(--line);position:relative}.check-list li::before{content:"✓";position:absolute;left:.25rem;color:var(--blue);font-weight:900}
.rule-table{border-top:2px solid var(--ink);margin:2rem 0}.rule-row{display:grid;grid-template-columns:220px 1fr;gap:2rem;padding:1.2rem 0;border-bottom:1px solid var(--line)}.rule-row strong{font-family:"Merriweather",serif}.rule-row p{margin:0;color:var(--muted)}
.warning{border-left:5px solid var(--red);background:#fff7f5;padding:1.2rem 1.4rem;margin:2rem 0}.warning strong{display:block;color:var(--red);margin-bottom:.25rem}.warning p{margin:0}
.next-task{margin-top:3.5rem;padding:1.6rem;border:1px solid var(--ink);display:grid;grid-template-columns:1fr auto;gap:2rem;align-items:center}.next-task p{margin:0;color:var(--muted)}.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;background:var(--blue);color:#fff;text-decoration:none;font-weight:800;padding:.7rem 1rem}.button:hover{background:var(--blue-dark);color:#fff}
.source-list{padding-left:1.15rem}.source-list li{margin:.9rem 0}.source-list a{overflow-wrap:anywhere}
.route-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--ink);border-bottom:1px solid var(--line);margin:2rem 0}.route-strip div{padding:1.2rem}.route-strip div+div{border-left:1px solid var(--line)}.route-strip span{display:block;color:var(--blue);font-weight:800;font-size:.8rem;text-transform:uppercase;letter-spacing:.07em}
.site-footer{background:var(--ink);color:#fff;padding:3rem 0}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:4rem}.site-footer a{color:#fff}.site-footer p{color:#cdd6db}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:.45rem 1.2rem}
.not-found{min-height:calc(100vh - 79px);display:grid;align-items:center;padding:4rem 0}.error-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:4rem;align-items:center}.error-code{font-family:"Merriweather",serif;font-size:clamp(7rem,20vw,15rem);line-height:.8;color:var(--blue)}
@media (max-width:1000px){.split-hero,.split-hero.reverse{grid-template-columns:1fr;gap:2rem}.split-hero.reverse .hero-media{order:0}.hero-copy{max-width:780px}.hero-media{aspect-ratio:16/8}.content-grid{grid-template-columns:1fr}.side-note{max-width:var(--reading)}.visual-plate{aspect-ratio:16/7}.error-grid{gap:2rem}.footer-grid{gap:2rem}}
@media (max-width:760px){body{font-size:17px}.shell{width:min(calc(100% - 32px),var(--max))}.header-row{min-height:68px}.desktop-nav{display:none}.mobile-nav{display:block}.cover-copy{padding:3rem 0 1.6rem}.cover-copy h1{font-size:clamp(2.55rem,15vw,4.2rem)}.visual-plate,.wide-media,.hero-media{aspect-ratio:4/3}.task-index{padding:1.8rem 0 4rem}.section-head{display:block}.section-head p{margin-top:.65rem}.task-link{grid-template-columns:48px 1fr 28px;gap:.75rem}.task-desc{grid-column:2/4}.note-strip .shell{grid-template-columns:1fr;gap:.35rem}.page-hero{padding:2.8rem 0}.wide-intro{padding:2.8rem 0 1.5rem}.content{padding:2.5rem 0 4.5rem}.step-list>li{grid-template-columns:42px 1fr}.rule-row{grid-template-columns:1fr;gap:.35rem}.route-strip{grid-template-columns:1fr}.route-strip div+div{border-left:0;border-top:1px solid var(--line)}.next-task{grid-template-columns:1fr}.button{width:100%}.footer-grid,.error-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr}.not-found{min-height:auto}.error-code{font-size:8rem}}
@media (max-width:390px){.shell{width:min(calc(100% - 24px),var(--max))}.brand-mark{width:28px;height:28px}.task-link{padding:1.2rem 0}.footer-links{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}