:root{--surface: #eceae3;--surface-raised: #e3e1d8;--surface-sunken: #e7e5dd;--washi-narrative: #e9edf0;--washi-pitch: #ffffff;--paper: #fdfdfb;--ink: #1c1c1c;--ink-strong: #111111;--ink-soft: #333333;--ink-muted: #6b6b6b;--line: #d3d1c8;--line-soft: #e6e4dc;--site-bar-h: 55px;--nav-w: 220px;--content-gutter: 3rem;--line-strong: #bebcb2;--green: #2b4a33;--green-bright: #4c7a58;--green-soft: #3f6349;--green-deep: #1e3524;--green-veil: rgba(43, 74, 51, .08);--green-halo: rgba(43, 74, 51, .14);--brand-primary: var(--green);--brand-secondary: var(--green-soft);--brand-accent: var(--green-bright);--brand-dark: var(--ink);--brand-light: var(--surface);--brand-muted: var(--ink-muted);--brand-border: var(--line);--font-heading: "Plus Jakarta Sans", "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;--font-body: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;--font-mono: "Plus Jakarta Sans", "Zen Kaku Gothic New", "Noto Sans JP", sans-serif}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--site-bar-h) + .5rem)}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}html{font-size:18px}body{margin:0;font-family:var(--font-body);color:var(--ink);background-color:var(--washi-narrative);line-height:1.7;font-weight:400;min-height:100vh;display:flex;flex-direction:column;position:relative}body:before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background-image:url(/img/washi.webp);background-size:100% auto;background-position:top center;background-repeat:repeat-y;mix-blend-mode:multiply;opacity:.7}.site-bar,main,.site-foot{position:relative;z-index:1}a{color:inherit;text-decoration:none;transition:color .15s ease}a:hover{color:var(--brand-primary)}.site-bar{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;min-height:var(--site-bar-h);padding:.55rem 1.5rem;background:var(--washi-pitch);font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em}.site-mark{display:inline-flex;align-items:center;gap:.55rem;color:var(--brand-dark);text-transform:uppercase}.site-nav{display:inline-flex;align-items:center;gap:1.25rem;color:var(--brand-muted)}.nav-toggle{display:none;flex-direction:column;position:fixed;top:1rem;right:1rem;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;padding:0;border:1px solid var(--line-strong);border-radius:50%;background:var(--washi-pitch);cursor:pointer;z-index:30;transition:border-color .25s ease,background .25s ease}.nav-toggle-bar{display:block;width:16px;height:1.5px;background:var(--ink);transition:transform .25s ease,background .25s ease}.nav-toggle[aria-expanded=true] .nav-toggle-bar:first-child{transform:translateY(3.25px) rotate(45deg)}.nav-toggle[aria-expanded=true] .nav-toggle-bar:last-child{transform:translateY(-3.25px) rotate(-45deg)}.lang-switch,.site-back{text-transform:uppercase}.site-nav a:hover{color:var(--brand-primary)}.site-nav a[href*="#"]{position:relative;background-image:linear-gradient(to right,var(--green) 50%,var(--brand-muted) 50%);background-size:200% 100%;background-position:100% 0;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;transition:background-position .48s cubic-bezier(.4,0,.2,1)}.site-nav a[href*="#"] .site-nav-num{-webkit-text-fill-color:var(--green)}.site-nav a[href*="#"]:after{content:"";position:absolute;left:0;top:auto;bottom:-.94rem;width:100%;height:2px;background:var(--green);transform:scaleX(0);transform-origin:left center;transition:transform .48s cubic-bezier(.4,0,.2,1)}.site-nav a[href*="#"].is-active,.site-nav a[href*="#"]:hover{background-position:0 0}.site-nav a[href*="#"].is-active:after,.site-nav a[href*="#"]:hover:after{transform:scaleX(1)}@media(prefers-reduced-motion:reduce){.site-nav a[href*="#"],.site-nav a[href*="#"]:after{transition:none}}.site-nav-num{color:var(--green);font-size:.7em;margin-right:.4em;letter-spacing:.04em}.site-nav-cta{padding:.45rem 1.1rem;border-radius:999px;background:var(--green-deep);color:var(--washi-pitch);font-weight:600;letter-spacing:.04em;white-space:nowrap;transition:background .15s ease,transform .15s ease}.site-nav-cta:hover{background:var(--green);color:var(--washi-pitch);transform:translateY(-1px)}main{flex:1;width:100%;max-width:900px;margin:0 auto;padding:2.5rem 1.5rem 3rem}.site-foot{padding:6rem 1.5rem 1.5rem;background:transparent;border-top:none;font-family:var(--font-mono);font-size:.65rem;letter-spacing:.08em;color:var(--brand-muted);text-transform:uppercase;display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;justify-content:center}.site-foot a:hover{color:var(--brand-primary)}.foot-copyright{font-size:.75em}@media(min-width:1081px){.site-bar{position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);min-height:100dvh;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:1.4rem;padding:1.9rem 1.4rem;background:var(--washi-pitch);border-right:1px solid var(--line-soft);z-index:30;overflow-y:auto}.site-mark{margin-bottom:.4rem}.site-nav{flex-direction:column;align-items:stretch;gap:.9rem;width:100%;flex:1}.site-nav a{display:flex;align-items:baseline;gap:.5rem;padding:.1rem 0;font-size:.72rem;letter-spacing:.03em}.site-nav a[href*="#"] .site-nav-num{min-width:1.6em}.site-nav a[href*="#"]:after{bottom:-.2rem}.site-nav :global(.cta){margin-top:.6rem;align-self:flex-start}.site-nav .site-back{font-size:.62rem;letter-spacing:.02em;color:var(--brand-muted)}.site-ext{margin-top:auto;padding-top:1.4rem}main{padding-left:calc(var(--nav-w) + var(--content-gutter));max-width:calc(900px + var(--nav-w) + var(--content-gutter) + 1.5rem)}html{overflow-x:clip}}.site-ext{display:flex;flex-direction:column;gap:.7rem}@media(max-width:1080px){.site-ext{margin-top:3rem}}.site-ext-arrow{width:12px;height:auto;margin-right:.4rem;vertical-align:-.05em;transform:rotate(-135deg)}.site-ext-arrow path{fill:none;stroke:currentColor;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}@media(max-width:1080px){.nav-toggle{display:flex}.site-nav{position:fixed;inset:0 0 0 auto;width:min(78vw,320px);max-width:none;flex-direction:column;align-items:flex-end;justify-content:center;gap:1.6rem;overflow-y:auto;background:#fff;padding:2rem 2rem 2rem 1.5rem;transform:translate(100%);visibility:hidden;transition:transform .3s ease,visibility 0s linear .3s;z-index:25}.site-nav.is-open{transform:translate(0);visibility:visible;transition:transform .3s ease,visibility 0s}.site-nav a{color:var(--ink);font-size:.95rem;letter-spacing:.08em}.site-nav a[href*="#"]{background-image:linear-gradient(to right,var(--green-bright) 50%,var(--ink) 50%);-webkit-text-fill-color:transparent}.site-nav a[href*="#"] .site-nav-num{-webkit-text-fill-color:var(--green-bright)}.site-nav .cta{align-self:stretch;width:100%;justify-content:center;margin-top:.5rem}.nav-toggle[aria-expanded=true]{border-color:var(--line-strong);background:transparent}.nav-toggle[aria-expanded=true] .nav-toggle-bar{background:var(--ink)}}@media(max-width:768px){.site-bar{position:static;padding:.75rem 1rem;font-size:.62rem;background:transparent}main{padding:1.5rem 1rem 2rem}.site-foot{padding:1.25rem 1rem;font-size:.6rem}}