:root{--p-50:#f5f8f8;--p-100:#dceaea;--p-200:#b9d2d2;--p-300:#649c9b;--p-400:#4f7a79;--p-500:#375f60;--p-600:#2d5354;--p-700:#244746;--p-800:#1b3231;--p-900:#11201f;--p-950:#0c1a1a;--accent-deep:#036d63;--accent:#65b6b8;--accent-bright:#21aab8;--accent-light:#a0e9ed;--ink:#1f2a2a;--muted:#5b6b6b;--faint:#5e7474;--line:#e2eaea;--line-strong:#cdd9d9;--surface:#ffffff;--surface-alt:#f5f8f8;--white:#ffffff;--cta-fill:#4f7a79;--cta-fill-hover:#375f60;--nav-ink:#373737;--text-prod:#757575;--deep-teal:#036d63;--consult-band:#417071;--case-band:rgba(3,109,99,.5);--footer-bg:#4f7a79;--footer-bg-soft:#5b8d8c;--footer-ink:#ffffff;--footer-ink-soft:#e3eeed;--watermark:url(/assets/port/home/intro-bg-watermark.png);--success:#2e8b6f;--warning:#b9842b;--error:#b3433b;--font-sans:var(--font-inter),var(--font-noto-jp),system-ui,-apple-system,"Segoe UI",sans-serif;--font-jp:var(--font-noto-jp),var(--font-inter),system-ui,sans-serif;--font-mono:"SFMono-Regular","Roboto Mono",Consolas,monospace;--fs-caption:0.75rem;--fs-small:0.875rem;--fs-body:1rem;--fs-lead:1.125rem;--fs-h4:1.25rem;--fs-h3:1.5rem;--fs-h2:1.953rem;--fs-h1:2.441rem;--fs-display:3.052rem;--lh-tight:1.2;--lh-snug:1.4;--lh-body:1.8;--tracking-tight:-0.01em;--tracking-wide:0.04em;--tracking-label:0.16em;--fw-regular:400;--fw-medium:500;--fw-semibold:600;--fw-bold:700;--sp-1:0.25rem;--sp-2:0.5rem;--sp-3:0.75rem;--sp-4:1rem;--sp-5:1.5rem;--sp-6:2rem;--sp-8:3rem;--sp-10:4rem;--sp-12:6rem;--sp-16:8rem;--r-sm:4px;--r-md:8px;--r-lg:12px;--r-xl:20px;--r-pill:999px;--shadow-sm:0 1px 2px rgba(17,32,31,0.06);--shadow-md:0 4px 16px rgba(17,32,31,0.08);--shadow-lg:0 12px 40px rgba(17,32,31,0.12);--container:1200px;--content:720px;--gutter:clamp(1rem,4vw,2.5rem);--ease:cubic-bezier(0.22,1,0.36,1);--dur:0.25s}*,:after,:before{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{font-family:var(--font-jp);font-size:var(--fs-body);line-height:var(--lh-body);color:var(--ink);background:var(--surface);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-feature-settings:"palt" 1}img,picture,svg{display:block;max-width:100%}img{height:auto}a{color:var(--accent-deep);text-decoration:none}a:hover{text-decoration:underline}ol,ul{padding:0;list-style:none}button{font:inherit;color:inherit;cursor:pointer}:focus-visible{outline:3px solid var(--accent-bright);outline-offset:3px;border-radius:2px}.serif{font-family:var(--font-noto-serif-jp),var(--font-source-serif),serif}.en{font-family:var(--font-source-serif),var(--font-inter),serif}.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}.section{padding-block:clamp(3.5rem,8vw,6rem)}.section--tight{padding-block:clamp(2.5rem,5vw,4rem)}.section--alt{background:#f7f5f0}.section--tintp{background:var(--p-50)}.section--ink{background:var(--p-500);color:#fff}.section--watermark{position:relative;isolation:isolate}.section--watermark:before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:var(--watermark) center bottom /cover no-repeat;opacity:.06;-webkit-mask-image:linear-gradient(180deg,transparent,#000 40%);mask-image:linear-gradient(180deg,transparent,#000 40%)}.section--tintp{position:relative;isolation:isolate}.section--tintp:before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:var(--watermark) center bottom /cover no-repeat;opacity:.05;-webkit-mask-image:linear-gradient(180deg,transparent,#000 55%);mask-image:linear-gradient(180deg,transparent,#000 55%)}.divider{height:1px;background:var(--line);border:0}.skip-link{position:absolute;left:-9999px;top:0;background:var(--p-700);color:#fff;padding:.75rem 1.25rem;z-index:200;border-radius:0 0 var(--r-md) 0}.skip-link:focus{left:0}.eyebrow{font-family:var(--font-source-serif),serif;font-size:var(--fs-small);letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--p-500);font-weight:600;display:inline-flex;align-items:center;gap:.65rem}.eyebrow:before{content:"";width:1.75rem;height:1px;background:var(--accent-deep);display:inline-block}.eyebrow--center{justify-content:center}.section-head{margin-bottom:clamp(2rem,4vw,3rem);max-width:46rem}.section-head--center{margin-inline:auto;text-align:center}.section-title{font-family:var(--font-noto-serif-jp),serif;font-weight:700;font-size:clamp(1.6rem,4vw,var(--fs-h2));line-height:var(--lh-snug);color:var(--p-800);letter-spacing:var(--tracking-tight);margin-top:.9rem;word-break:auto-phrase}.section-lead{margin-top:1.1rem;color:var(--muted);font-size:var(--fs-lead);max-width:42rem}.section-head--center .section-lead{margin-inline:auto}.u-gold{position:relative;display:inline}.u-gold:after{content:"";position:absolute;left:0;right:0;bottom:-.18em;height:2px;background:var(--gold,#b0894e)}:root{--gold:#b0894e;--gold-dark:#c9a24b}