:root{--ink:#202220;--muted:#5e635e;--line:#cfcbbc;--paper:#f4f1e8;--white:#fffefa;--green:#244b3c;--rose:#a74636;--reading-size:18px;--ui-size:13px;--touch-size:44px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-size:var(--reading-size);font-family:Arial,Helvetica,sans-serif;line-height:1.65}
a{color:inherit}
nav{min-height:66px;padding:10px clamp(18px,5vw,70px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:24px;background:rgba(244,241,232,.98)}
.brand img{display:block;width:116px}
.nav-links{display:flex;align-items:center;justify-content:flex-end;gap:20px;flex-wrap:wrap}
.nav-links>a{display:inline-flex;align-items:center;min-height:var(--touch-size);font-size:var(--ui-size);font-weight:800;text-decoration:none}
.locale-switch{display:flex;border:1px solid var(--ink)}
.locale-switch a{display:inline-flex;align-items:center;min-height:var(--touch-size);padding:7px 12px;font-size:var(--ui-size);font-weight:800;text-decoration:none}
.locale-switch a[aria-current="page"]{background:var(--ink);color:var(--white)}
.hero{padding:clamp(62px,9vw,112px) clamp(20px,8vw,118px);border-bottom:1px solid var(--line);background:linear-gradient(128deg,var(--paper) 0 76%,#ded8ca 76%)}
.hero>span,.section-heading>span,.study-rule>span{color:var(--green);font-size:12px;font-weight:900;letter-spacing:.16em}
.hero h1{max-width:1050px;margin:18px 0 22px;font:clamp(2.8rem,6.4vw,6.8rem)/.94 Georgia,"Times New Roman",serif;letter-spacing:-.052em}
.hero p{max-width:800px;margin:0;color:var(--muted);font:clamp(1rem,1.5vw,1.2rem)/1.7 Georgia,"Times New Roman",serif}
.primary{display:inline-flex;align-items:center;min-height:var(--touch-size);margin-top:28px;padding:13px 18px;background:var(--ink);color:var(--white);font-size:var(--ui-size);font-weight:900;text-decoration:none}
main>section{width:min(1220px,calc(100% - 40px));margin:auto;padding:78px 0;border-bottom:1px solid var(--line);scroll-margin-top:20px}
.section-heading{display:grid;grid-template-columns:180px minmax(0,1fr);gap:24px;margin-bottom:38px}
.section-heading h2,.study-rule h2{max-width:920px;margin:0 0 12px;font:clamp(2.2rem,4.8vw,4.6rem)/1 Georgia,"Times New Roman",serif;letter-spacing:-.04em}
.section-heading p{max-width:800px;margin:0;color:var(--muted);font:1rem/1.7 Georgia,"Times New Roman",serif}
.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line)}
.course-card{display:grid;grid-template-columns:58px 1fr;gap:16px;padding:27px;background:var(--white);text-decoration:none}
.course-card:hover,.course-card:focus-visible{position:relative;z-index:1;background:#edf3ed;outline:2px solid var(--ink);outline-offset:-2px}
.course-card>span{color:var(--green);font:700 12px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}
.course-card h3{margin:0 0 9px;font:1.55rem/1.1 Georgia,"Times New Roman",serif}
.course-card small{display:block;margin-bottom:9px;color:var(--green);font-size:12px;font-weight:900;letter-spacing:.08em}
.course-card p{margin:0;color:var(--muted);font:16px/1.68 Georgia,"Times New Roman",serif}
.course-card dl{display:grid;grid-template-columns:100px 1fr;gap:6px 12px;margin:17px 0 0;padding-top:14px;border-top:1px solid var(--line);font-size:13px;line-height:1.5}
.course-card dt{font-weight:900;text-transform:uppercase}.course-card dd{margin:0;color:var(--muted)}
.course-card.is-planned{background:#ebe8df;color:#50534f}.course-card.is-planned small{color:#6c6258}
.principles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line)}
.principles article{padding:24px;background:var(--white)}
.principles b{color:var(--rose);font-size:12px}
.principles h3{margin:30px 0 10px;font:1.2rem Georgia,serif}
.principles p{margin:0;color:var(--muted);font-size:16px;line-height:1.65}
.study-rule{background:var(--green);color:var(--white);padding:68px!important}
.study-rule>span{color:#bfd5c9}.study-rule h2{margin-top:14px}
.study-rule ol{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin:30px 0 0;padding:0;background:#678073;list-style:none;counter-reset:study}
.study-rule li{padding:22px;background:var(--green);font:16px/1.68 Georgia,serif;counter-increment:study}
.study-rule li::before{content:"0" counter(study);display:block;margin-bottom:24px;color:#bfd5c9;font:700 12px Arial,sans-serif}
.noscript{padding:20px;background:var(--white)}
footer{padding:30px clamp(20px,5vw,70px);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;color:var(--muted);font-size:var(--ui-size)}
footer img{display:block;width:100px}footer p{margin:0}footer span{text-align:right}
@media(max-width:900px){.principles,.study-rule ol{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){nav{align-items:flex-start}.nav-links>a{display:none}.hero{background:var(--paper)}.section-heading{grid-template-columns:1fr;gap:10px}.course-grid,.principles,.study-rule ol{grid-template-columns:1fr}.study-rule{padding:48px 20px!important}footer{grid-template-columns:1fr}footer span{text-align:left}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}