:root{--ink:#183b34;--muted:#62736c;--cream:#f7f0e3;--paper:#fffaf0;--sage:#dfe9dd;--orange:#df6f35;--line:#183b3429}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:var(--cream);margin:0;font-family:Inter,Noto Sans JP,Noto Sans SC,sans-serif}body:before{content:"";pointer-events:none;opacity:.25;background-image:radial-gradient(#183b341f .7px,#0000 .7px);background-size:9px 9px;position:fixed;inset:0}a{color:inherit}.fuel-header{z-index:10;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffaf0f0;align-items:center;gap:32px;min-height:74px;padding:14px clamp(20px,4vw,64px);display:flex;position:sticky;top:0}.fuel-brand img{width:132px;display:block}.fuel-nav{gap:24px;margin-left:auto;display:flex}.fuel-nav a,.fuel-header-actions>a{font-size:13px;font-weight:600;text-decoration:none}.fuel-header-actions{align-items:center;gap:18px;display:flex}.fuel-lang{border:1px solid 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p{color:var(--muted);margin:0;font-size:13px}.fuel-scope{grid-template-columns:.9fr 1.1fr;gap:72px;display:grid}.fuel-scope-copy ul{grid-template-columns:1fr 1fr;gap:10px;padding:0;list-style:none;display:grid}.fuel-scope-copy li{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:14px 16px}.fuel-special-bridge{border-top:4px solid var(--orange);background:var(--sage);grid-column:1/-1;grid-template-columns:.9fr 1.1fr;align-items:end;gap:72px;margin-top:34px;padding:34px;display:grid}.fuel-special-bridge .fuel-kicker{margin-bottom:12px}.fuel-special-bridge h3{letter-spacing:-.025em;margin:0 0 12px;font-family:Noto Serif JP,serif;font-size:clamp(28px,3vw,42px);line-height:1.2}.fuel-special-bridge p:not(.fuel-kicker){color:#476159;margin:0;line-height:1.75}.fuel-special-bridge ul{flex-wrap:wrap;gap:8px;margin:0 0 20px;padding:0;list-style:none;display:flex}.fuel-special-bridge li{background:#fffaf0b8;border:1px solid #183b342e;border-radius:99px;padding:8px 11px;font-size:13px;font-weight:700}.fuel-special-bridge a{color:#fff;background:var(--ink);border-radius:8px;align-items:center;min-height:46px;padding:0 18px;font-weight:700;text-decoration:none;display:inline-flex}.fuel-cta{text-align:center;background:var(--ink);color:#fff;border-radius:28px;margin-block:80px;padding:72px}.fuel-cta>p:not(.fuel-kicker){color:#ffffffb8}.fuel-cta .fuel-primary{color:var(--ink);background:#f5b26f}.fuel-cta .fuel-secondary{color:#fff;background:0 0;border-color:#ffffff4d}.fuel-cta>div{justify-content:center;gap:12px;margin:28px 0 18px;display:flex}.fuel-cta small{color:#ffffff94}.fuel-footer{color:var(--muted);border-top:1px solid var(--line);justify-content:space-between;padding:28px 0 42px;font-size:12px;display:flex}@media (width<=900px){.fuel-nav{display:none}.fuel-header{gap:16px}.fuel-header-actions{margin-left:auto}.fuel-header-actions>a{display:none}.fuel-hero{grid-template-columns:1fr;padding-top:52px}.fuel-hero-art{order:-1}.fuel-steps{grid-template-columns:1fr 1fr}.fuel-map,.fuel-scope,.fuel-special-bridge{grid-template-columns:1fr;gap:20px}.fuel-lessons{grid-template-columns:1fr 1fr}}@media (width<=600px){.fuel-header{min-height:64px;padding-inline:16px}.fuel-brand img{width:108px}.fuel-lang button{padding:5px 7px}.fuel-hero,.fuel-section,.fuel-cta,.fuel-footer{width:min(100% - 28px,1200px)}.fuel-hero{gap:30px;min-height:0;padding:30px 0 56px}.fuel-hero-art img{border-width:7px;border-radius:18px}.fuel-hero h1{font-size:45px}.fuel-hero-facts{gap:7px}.fuel-hero-facts span{flex:1;min-width:0;padding:10px}.fuel-hero-facts strong{font-size:25px}.fuel-section{padding:72px 0}.fuel-steps,.fuel-lessons{grid-template-columns:1fr}.fuel-steps article{min-height:0}.fuel-steps h3{margin-top:25px}.fuel-module{margin-top:56px}.fuel-module>header{display:block}.fuel-module>header h3{margin-top:8px;font-size:27px}.fuel-lesson-card h4{min-height:0}.fuel-scope-copy ul{grid-template-columns:1fr}.fuel-special-bridge{margin-top:24px;padding:24px 18px}.fuel-special-bridge a{text-align:center;justify-content:center;width:100%}.fuel-cta{border-radius:20px;margin-block:30px 60px;padding:48px 20px}.fuel-cta>div{flex-direction:column}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.fuel-lesson-card{transition:none}}