@custom-variant dark (&:is(.dark *));@theme inline{ --font-sans: "Noto Sans JP", sans-serif; --font-serif: "Zen Old Mincho", serif; --font-mono: "IBM Plex Mono", monospace; --color-background: var(--paper); --color-foreground: var(--graphite); --color-primary: var(--ink); --color-primary-foreground: #ffffff; --color-border: var(--line); }:root{--ink: #102638;--paper: #eef2f3;--paper-strong: #e4ebed;--white: #fbfdfd;--teal: #137a78;--teal-pale: #dceeed;--coral: #b9513c;--gold: #d6a439;--graphite: #26333b;--muted: #61717a;--line: #bfcccf;--line-dark: #7c9199;--radius: 0;--ease-out: cubic-bezier(.23, 1, .32, 1)}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--paper)}body{margin:0;background:var(--paper);color:var(--graphite);font-family:Noto Sans JP,sans-serif;font-size:16px;line-height:1.75}body:before{content:"";position:fixed;z-index:-1;inset:0;opacity:.28;pointer-events:none;background-image:radial-gradient(rgba(16,38,56,.09) .55px,transparent .55px);background-size:5px 5px}a{color:inherit}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid var(--gold);outline-offset:4px}img{display:block;max-width:100%}.site-shell{overflow:hidden}.frame{width:min(100% - 48px,1240px);margin:0 auto}.skip-link{position:fixed;top:-120px;left:16px;z-index:100;padding:10px 16px;color:#fff;background:var(--ink);font-weight:700;text-decoration:none;transition:top .16s var(--ease-out)}.skip-link:focus{top:16px}.masthead{position:sticky;top:0;z-index:40;background:#eef2f3ed;border-bottom:1px solid rgba(124,145,153,.55);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.masthead-inner{min-height:76px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;gap:11px;width:fit-content;color:var(--ink);font-family:Zen Old Mincho,serif;font-size:1.23rem;font-weight:700;letter-spacing:-.055em;text-decoration:none}.brand img{width:32px;height:32px;object-fit:contain}.issue-line{margin:0;color:var(--muted);font-family:IBM Plex Mono,monospace;font-size:.66rem;font-weight:500;letter-spacing:.14em;white-space:nowrap}.issue-line span{color:var(--teal);margin:0 .35rem}.site-nav{display:flex;justify-content:flex-end;gap:clamp(16px,2.2vw,30px)}.site-nav a{position:relative;color:var(--ink);font-size:.84rem;font-weight:700;text-decoration:none}.site-nav a:after{content:"";position:absolute;right:0;bottom:-5px;left:0;height:1px;transform:scaleX(0);transform-origin:left;background:var(--teal);transition:transform .18s var(--ease-out)}.site-nav a:hover:after{transform:scaleX(1)}.hero{position:relative;padding:clamp(64px,9vw,130px) 0 clamp(56px,7vw,96px);border-bottom:1px solid var(--line)}.hero:after{content:"";position:absolute;right:-10%;bottom:-1px;width:54%;height:2px;background:var(--teal)}.hero-grid{display:grid;grid-template-columns:minmax(0,.93fr) minmax(500px,1.07fr);gap:clamp(32px,5vw,88px);align-items:center}.eyebrow,.section-kicker{display:flex;align-items:center;gap:9px;margin:0 0 16px;color:var(--teal);font-family:IBM Plex Mono,monospace;font-size:.68rem;font-weight:600;letter-spacing:.13em;line-height:1.4}.eyebrow-dot{width:9px;height:9px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px #137a7821}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--ink)}h1{margin-bottom:24px;font-family:Zen Old Mincho,serif;font-size:clamp(3rem,5.5vw,5.55rem);font-weight:600;letter-spacing:-.075em;line-height:1.1}h1 em{color:var(--teal);font-style:normal}.hero-lede{max-width:610px;margin-bottom:28px;color:#465963;font-size:clamp(1rem,1.35vw,1.13rem);line-height:2}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:18px 24px}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:12px 17px;border:1px solid transparent;font-size:.9rem;font-weight:800;text-decoration:none;transition:transform .14s var(--ease-out),background-color .18s var(--ease-out),color .18s var(--ease-out)}.button svg{width:17px;height:17px}.button:active{transform:scale(.97)}.button-primary{background:var(--ink);color:#fff}.button-primary:hover{background:var(--teal)}.text-action{display:inline-flex;align-items:center;gap:7px;border-bottom:1px solid var(--ink);padding-bottom:4px;color:var(--ink);font-size:.88rem;font-weight:700;text-decoration:none;transition:color .18s var(--ease-out),border-color .18s var(--ease-out)}.text-action:hover{border-color:var(--teal);color:var(--teal)}.text-action svg{width:16px;height:16px}.hero-proof{display:flex;flex-wrap:wrap;gap:12px 19px;margin-top:28px;color:var(--muted);font-family:IBM Plex Mono,monospace;font-size:.67rem;letter-spacing:.02em}.hero-proof span:first-child{display:flex;align-items:center;gap:5px;color:var(--teal)}.hero-proof svg{width:15px;height:15px}.verification-notebook{position:relative;min-height:470px}.verification-notebook:before{content:"";position:absolute;z-index:-1;top:8%;right:-9%;width:87%;height:78%;border:1px solid var(--line-dark);transform:rotate(4deg)}.verification-notebook:after{content:"WAVEFORM 01\aSCRIPT / SOURCE / CHECK\aREF 2026.08.14";position:absolute;z-index:2;right:-2%;top:13%;padding:7px 9px;border-left:2px solid var(--teal);color:var(--ink);background:#fbfdfdeb;box-shadow:5px 5px #1026380f;font-family:IBM Plex Mono,monospace;font-size:.52rem;font-weight:600;letter-spacing:.07em;line-height:1.75;white-space:pre;transform:rotate(2deg)}.hero-art{width:94%;min-height:470px;object-fit:cover;object-position:center;border:1px solid rgba(16,38,56,.25);box-shadow:18px 20px #10263814}.notebook-caption{position:absolute;display:flex;align-items:center;gap:12px;padding:10px 12px;background:var(--white);border:1px solid var(--line-dark);box-shadow:7px 8px #10263812;font-family:IBM Plex 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