:root{--bg:#fbf3ea;--card:#fffdf9;--ink:#3b2a20;--soft:#86705f;--line:#efe2d2;--line2:#dcc8b3;--pink:#e0507c;--pink-deep:#b0365d;--pink-soft:#ffe3ea;--pink-ink:#b3345e;--blue:#1f84d0;--blue-soft:#ddeffd;--blue-ink:#175f96;--leaf:#2d9a5b;--leaf-soft:#e0f4e5;--yuzu:#ffb42b;--yuzu-deep:#cf8410;--yuzu-soft:#ffeecb;--bear:#b8773f;--on-accent:#ffffff;--shadow:rgba(80,50,30,.16);--f-ui:"M PLUS Rounded 1c","Hiragino Maru Gothic ProN",system-ui,sans-serif;--f-kana:"Klee One","Hiragino Mincho ProN","Yu Mincho",serif;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg:#1a1411;--card:#271e19;--ink:#f7ece2;--soft:#b9a391;--line:#3a2d25;--line2:#54433a;--pink:#ff8aa9;--pink-deep:#c15b7a;--pink-soft:#3b2229;--pink-ink:#ffa6bf;--blue:#6bc0ff;--blue-soft:#1d2b3b;--blue-ink:#97d3ff;--leaf:#5fd494;--leaf-soft:#1c3326;--yuzu:#ffc453;--yuzu-deep:#c08a2c;--yuzu-soft:#3a2d17;--bear:#c4854b;--on-accent:#1c1411;--shadow:rgba(0,0,0,.45);color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg)}body{color:var(--ink);font-family:var(--f-ui);font-weight:500;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}img,svg{max-width:100%}a{color:var(--blue-ink);font-weight:700}h1,h2,h3{font-weight:800;line-height:1.2;text-wrap:balance;margin:0}p{margin:0}.wrap{max-width:1080px;margin:0 auto;padding-inline:20px}.kj{font-family:var(--f-kana);font-weight:600}.muted{color:var(--soft)}.eyebrow{font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--pink-ink)}.nav{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.nav .wrap{display:flex;align-items:center;gap:18px;height:64px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.15rem;margin-right:auto}.brand img{width:38px;height:38px}.nav a.lnk{text-decoration:none;color:var(--soft);font-weight:700;font-size:.95rem}.nav a.lnk:hover{color:var(--ink)}@media (max-width:720px){.nav a.lnk{display:none}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:16px;padding:14px 22px;font:800 1rem var(--f-ui);text-decoration:none;background:var(--pink);color:var(--on-accent);box-shadow:0 4px 0 var(--pink-deep);transition:transform .08s,box-shadow .08s}.btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--pink-deep)}.btn.small{padding:9px 16px;font-size:.92rem;border-radius:12px}.btn.ghost{background:var(--card);color:var(--ink);box-shadow:0 3px 0 var(--line2);border:2px solid var(--line2)}.btn:focus-visible,a:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.hero{padding-block:56px 40px}.hero .wrap{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center}@media (max-width:860px){.hero .wrap{grid-template-columns:minmax(0,1fr)}.hero{padding-top:32px}}.hero h1{font-size:clamp(2.2rem,5.2vw,3.6rem);letter-spacing:-.01em;margin-block:12px 16px}.hero h1 .kj{color:var(--pink)}.hero p.lead{font-size:1.15rem;color:var(--soft);max-width:34em}.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.hero .note{margin-top:14px;font-size:.9rem;color:var(--soft)}.stage{position:relative;justify-self:center;width:min(100%,440px)}.paper{background:var(--card);border:2px solid var(--line);border-radius:30px;padding:16px;box-shadow:0 6px 0 var(--line),0 30px 60px -40px var(--shadow)}.paper svg{display:block;width:100%;height:auto}.stage .kuma{position:absolute;width:32%;right:-6%;bottom:-12%;filter:drop-shadow(0 8px 12px var(--shadow))}.cell{fill:none;stroke:var(--line2);stroke-width:.7}.cross{stroke:var(--line2);stroke-width:.5;stroke-dasharray:1.8 1.8}.ink path{fill:none;stroke:var(--ink);stroke-width:3.8;stroke-linecap:round;stroke-linejoin:round}.draw path{stroke-dasharray:1;stroke-dashoffset:1;animation:draw var(--d,.6s) ease-in-out forwards;animation-delay:var(--t,0s)}@keyframes draw{to{stroke-dashoffset:0}}.hanamaru{fill:none;stroke:var(--pink);stroke-width:1.6;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 1s ease-out forwards;animation-delay:var(--t,4s)}@media (prefers-reduced-motion:reduce){.draw path,.hanamaru{animation:none;stroke-dashoffset:0}}section.block{padding-block:56px}.block h2{font-size:clamp(1.6rem,3.2vw,2.3rem);margin-block:8px 14px}.block .intro{color:var(--soft);max-width:40em;font-size:1.05rem}.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:30px}@media (max-width:720px){.features{grid-template-columns:minmax(0,1fr)}}.feat{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:22px;display:flex;flex-direction:column;gap:10px;box-shadow:0 3px 0 var(--line)}.feat h3{font-size:1.2rem}.feat p{color:var(--soft);font-size:.98rem}.feat .art{height:120px;display:flex;align-items:center;justify-content:center;border-radius:16px;background:var(--c-soft,var(--yuzu-soft));gap:10px;overflow:hidden}.pathnodes{display:flex;gap:14px;align-items:center}.pathnodes i{width:46px;height:46px;border-radius:50%;background:var(--pink);box-shadow:0 4px 0 var(--pink-deep);display:grid;place-items:center;font-style:normal;color:var(--on-accent);font-family:var(--f-kana);font-weight:600;font-size:1.3rem}.pathnodes i:nth-child(2){transform:translateY(-14px)}.pathnodes i.lock{background:var(--line2);box-shadow:0 4px 0 var(--line2);color:var(--soft)}.podium{display:flex;align-items:flex-end;gap:8px}.podium b{width:56px;border-radius:10px 10px 4px 4px;display:grid;place-items:center;font-weight:800}.race{display:flex;flex-direction:column;gap:10px;width:78%}.race div{height:12px;border-radius:99px;background:var(--line)}.race div i{display:block;height:100%;border-radius:99px}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:30px;counter-reset:s}@media (max-width:720px){.steps{grid-template-columns:minmax(0,1fr)}}.step{display:flex;flex-direction:column;gap:8px}.step .num{width:38px;height:38px;border-radius:12px;background:var(--yuzu);color:#3b2b00;display:grid;place-items:center;font-weight:800}.step p{color:var(--soft)}.band{background:var(--card);border-block:1px solid var(--line)}.faq{display:flex;flex-direction:column;gap:10px;margin-top:26px;max-width:760px}.faq details{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px 18px}.faq summary{font-weight:800;cursor:pointer}.faq details p{margin-top:8px;color:var(--soft)}.final{text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}.final img{width:120px}.page-head{padding-block:40px 10px}.page-head h1{font-size:clamp(2rem,4.4vw,3rem);margin-block:8px 12px}.page-head p{color:var(--soft);max-width:44em}.kgrid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin-top:22px}.kgrid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.kcell{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:8px 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b{display:block;font-family:var(--f-kana);font-weight:600;font-size:1.6rem;color:var(--ink);line-height:1.3}.scroll{overflow-x:auto}.legend{display:flex;gap:18px;flex-wrap:wrap;color:var(--soft);font-size:.92rem;margin-top:10px}.cta-card{margin-top:40px;background:var(--yuzu-soft);border-radius:26px;padding:24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}.cta-card img{width:84px}.cta-card div{flex:1;min-width:220px}.article{max-width:720px}.article h2{font-size:1.55rem;margin-block:36px 10px}.article h3{font-size:1.15rem;margin-block:22px 6px}.article p,.article li{color:var(--ink)}.article p+p{margin-top:12px}.article ul,.article ol{padding-left:1.3em;margin:10px 0}.article li+li{margin-top:6px}.pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:14px 0}.pair div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px;text-align:center}.pair b{font-family:var(--f-kana);font-weight:600;font-size:2.4rem;display:block;line-height:1.2}.pair span{font-size:.9rem;color:var(--soft)}.tip{background:var(--blue-soft);border-radius:16px;padding:14px 16px;margin:16px 0}footer{border-top:1px solid var(--line);padding-block:30px 40px;margin-top:40px;color:var(--soft);font-size:.9rem}footer .wrap{display:flex;flex-wrap:wrap;gap:14px 24px;align-items:center}footer nav{display:flex;flex-wrap:wrap;gap:8px 18px}footer a{color:var(--soft)}footer .credit{flex-basis:100%;font-size:.8rem}.admin{padding-block:24px 60px;display:flex;flex-direction:column;gap:18px}.admin-tag{font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;background:var(--pink-soft);color:var(--pink-ink);border-radius:999px;padding:2px 8px}.adm-head h1{font-size:2rem}.adm-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}@media (max-width:760px){.adm-grid{grid-template-columns:minmax(0,1fr)}}.adm-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;display:flex;flex-direction:column;gap:8px;box-shadow:0 3px 0 var(--line);min-width:0}.adm-card h2{font-size:1.2rem;margin-bottom:4px}.adm-card ol{margin:6px 0;padding-left:1.3em}.adm-card li+li{margin-top:6px}.adm-center{align-items:center;text-align:center;margin-top:40px}.adm-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.lab{font-size:.78rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--soft);margin-top:6px}.in{border:2px solid var(--line2);border-radius:12px;padding:10px 12px;background:var(--bg);color:var(--ink);font:700 1rem var(--f-ui);width:100%}.in.tiny{width:90px;padding:4px 8px;margin-left:6px}.in.codes{font-family:ui-monospace,Menlo,monospace;font-size:.9rem;margin:6px 0;resize:vertical}.radios{display:flex;flex-direction:column;gap:6px;font-weight:700}.radios 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0;padding-left:1.2em}.adm-toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:14px;font-weight:800;z-index:50;transition:opacity .25s;max-width:90vw;text-align:center}.uid{word-break:break-all}