:root{color-scheme:light;--blue:#0066cc;--blue-action:var(--blue);--blue-focus:#0071e3;--ink:#1d1d1f;--muted:#7a7a7a;--muted-dark:#333333;--canvas:#ffffff;--parchment:#f5f5f7;--pearl:#fafafc;--hairline:#e0e0e0;--divider:#f0f0f0;--dark-tile:#272729;--dark-tile-2:#2a2a2c;--dark-tile-3:#252527;--on-dark:#ffffff;--oxtane-blue:var(--blue);--oxtane-blue-action:var(--blue-action);--oxtane-blue-focus:var(--blue-focus);--oxtane-ink:var(--ink);--oxtane-muted:var(--muted);--oxtane-muted-dark:var(--muted-dark);--oxtane-canvas:var(--canvas);--oxtane-parchment:var(--parchment);--oxtane-pearl:var(--pearl);--oxtane-hairline:var(--hairline);--oxtane-divider:var(--divider);--oxtane-dark-tile:var(--dark-tile);--surface-page:var(--parchment);--surface-content:var(--canvas);--surface-raised:var(--pearl);--oxtane-brand-backing:#ffffff}html.theme-dark,html[data-theme=dark]{color-scheme:dark;--blue:#7db8dc;--blue-action:#2a6687;--blue-focus:#b5ddf5;--ink:#edf3f7;--muted:#adbac5;--muted-dark:#d7e0e6;--canvas:#171f27;--parchment:#0d1319;--pearl:#242e38;--hairline:#3c4a57;--divider:#2d3945;--dark-tile:#10161c;--dark-tile-2:#1c252e;--dark-tile-3:#2a3540;--on-dark:#ffffff;--oxtane-brand-backing:#f1f5f7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--ink);font-family:SF Pro Text,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:17px;line-height:1.47;letter-spacing:-.01em}html.theme-dark body,html[data-theme=dark] body{background:var(--parchment)}:lang(ja),html:lang(ja) body{font-family:Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic UI,Yu Gothic,Noto Sans JP,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-break:strict;word-break:normal;font-feature-settings:"kern";font-kerning:normal}html:lang(ja) body{line-height:1.7;letter-spacing:normal;font-weight:400}html:lang(ja) :is(h1,h2,h3,h4,h5,h6){font-family:Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic UI,Yu Gothic,Noto Sans JP,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif!important;font-weight:600!important;letter-spacing:normal!important;line-break:strict;overflow-wrap:anywhere}html:lang(ja) :is(h1:not(.oxtane-hero-title),h2,h3,h4,h5,h6){line-height:1.28!important}html:lang(ja) :is(p,li,dd,dt,label){line-height:1.7;overflow-wrap:anywhere;line-break:strict}.official-brand-horizontal{color:var(--oxtane-ink);overflow:hidden}.official-brand-icon-backing{width:48px;height:48px;flex:0 0 48px;display:grid;place-items:center;padding:2px;border-radius:50%;background:var(--oxtane-brand-backing)}.official-brand-icon{display:block;width:100%;height:100%;object-fit:contain}.official-brand-copy{min-width:0;display:grid;grid-gap:.08rem;gap:.08rem;line-height:1;white-space:nowrap}.official-brand-name{color:var(--oxtane-ink);font-size:1.52rem;font-weight:700;letter-spacing:-.035em}.official-brand-subtitle{color:var(--oxtane-muted);font-size:.72rem;font-weight:600;letter-spacing:.015em}.oxtane-hero-title{font-size:clamp(2.8rem,6vw,5rem);line-height:1.02;letter-spacing:-.03em}html:lang(ja) .oxtane-hero .oxtane-hero-title{max-width:100%;font-size:clamp(2.2rem,5vw,3.25rem);line-height:1.24;letter-spacing:normal}@media (max-width:600px){html:lang(ja) .oxtane-hero .oxtane-hero-title{font-size:clamp(2rem,8.2vw,2.375rem);line-height:1.24}}html:lang(ja) main :is([style*=text-transform],[style*=letter-spacing]){text-transform:none!important;letter-spacing:normal!important}html:lang(ja) main :is(h1,h2,h3,h4,h5,h6){font-weight:600!important}html:lang(ja) .oxtane-header :is(a,button),html:lang(ja) main :is(a,button){letter-spacing:normal;line-break:strict;overflow-wrap:anywhere}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--blue-focus);outline-offset:3px}button,input,textarea{font:inherit}a{color:inherit}[id]{scroll-margin-top:92px}.page-shell{min-height:100vh;position:relative;overflow:hidden}.bg-orb,.grid-overlay,.orb-one,.orb-two{pointer-events:none;background:transparent}.section,.topbar{position:relative;z-index:1}.topbar{max-width:1180px;margin:0 auto;padding:.75rem 2rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;border-bottom:1px solid var(--hairline);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:rgba(245,245,247,.86)}html.theme-dark .topbar,html[data-theme=dark] .topbar{background:var(--surface-page)}html.theme-dark .oxtane-header,html[data-theme=dark] .oxtane-header{background:var(--surface-page)!important}html.theme-dark .oxtane-header a[href="#contact"],html.theme-dark .oxtane-header button[aria-pressed=true],html.theme-dark .oxtane-header button[style*="background: var(--oxtane-blue)"],html.theme-dark main a[href="#contact"],html[data-theme=dark] .oxtane-header a[href="#contact"],html[data-theme=dark] .oxtane-header button[aria-pressed=true],html[data-theme=dark] .oxtane-header button[style*="background: var(--oxtane-blue)"],html[data-theme=dark] main a[href="#contact"]{background:var(--oxtane-blue-action)!important}html.theme-dark .oxtane-header a:hover,html.theme-dark main a:hover,html[data-theme=dark] .oxtane-header a:hover,html[data-theme=dark] main a:hover{color:var(--oxtane-blue)!important}html.theme-dark .oxtane-header a[href="#contact"]:hover,html.theme-dark main a[href="#contact"]:hover,html[data-theme=dark] .oxtane-header a[href="#contact"]:hover,html[data-theme=dark] main a[href="#contact"]:hover{background:var(--oxtane-blue-action)!important;color:#fff!important}html.theme-dark main :is(a,button)[style*="background: var(--oxtane-blue)"]:hover,html[data-theme=dark] main :is(a,button)[style*="background: var(--oxtane-blue)"]:hover{background:var(--oxtane-blue-action)!important;color:#fff!important}html.theme-dark :is(a,button,input,textarea,select):focus-visible,html[data-theme=dark] :is(a,button,input,textarea,select):focus-visible{box-shadow:0 0 0 4px color-mix(in srgb,var(--blue-focus) 22%,transparent)}.brand-wrap{display:flex;align-items:center;gap:.75rem}.brand-mark{width:38px;height:38px;border-radius:8px;display:grid;place-items:center;background:var(--blue-action);color:var(--on-dark)}.brand-mark,.brand-name{font-weight:600}.brand-sub{color:var(--muted);font-size:.8rem}.nav-links{display:flex;align-items:center;gap:1.1rem;flex-wrap:wrap}.nav-links a{text-decoration:none;color:var(--muted);font-size:.88rem}.nav-links a:hover{color:var(--blue)}.section{max-width:1180px;margin:0 auto;padding:2rem}.narrow{max-width:820px}.center-text{text-align:center}.left{text-align:left}.hero{padding-top:5.5rem;padding-bottom:4rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));grid-gap:2.5rem;gap:2.5rem;align-items:center}.hero h1,.section h2{margin:.8rem 0 1rem;font-family:SF Pro Display,system-ui,-apple-system,sans-serif;font-size:clamp(2.2rem,5vw,4.8rem);font-weight:600;line-height:1.07;letter-spacing:-.28px}.hero h1 span{color:var(--blue)}.section h2{font-size:clamp(2rem,4vw,3rem)}.eyebrow{color:var(--blue);font-size:.82rem;text-transform:uppercase;letter-spacing:.14em;font-weight:600}.about-card p,.card p,.contact-card p,.lead,.section-copy{color:var(--muted);line-height:1.47;font-size:1rem}.lead{max-width:680px}.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin:1.75rem 0}.button,.hero-actions.centered{justify-content:center}.button{text-decoration:none;border-radius:999px;padding:.7rem 1.35rem;font-weight:400;display:inline-flex;align-items:center}.button.small{padding:.55rem 1rem;border-radius:999px}.button-primary{background:var(--blue-action);color:var(--on-dark)!important}.button-secondary{border:1px solid var(--blue);background:var(--canvas);color:var(--blue)!important}.button-white{background:var(--canvas);color:var(--ink)!important}.button-ghost{border:1px solid;color:var(--blue)!important}.pill-row{display:flex;flex-wrap:wrap;gap:.75rem}.pill-row span,.status-badge{display:inline-flex;align-items:center;padding:.55rem .8rem;border-radius:999px;border:1px solid var(--hairline);background:var(--pearl);color:var(--muted-dark);font-size:.88rem}.status-badge{color:var(--blue);border-color:rgba(0,102,204,.35)}.card{border:1px solid var(--hairline);background:var(--pearl);border-radius:18px;padding:1.4rem}.hero-card{padding:1.5rem}.status-row{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem}.muted-label{color:var(--muted);font-size:.82rem;margin-bottom:.35rem}.card-title{font-size:1.4rem;font-weight:600}.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:1rem;gap:1rem}.stat-box{padding:1rem 1.1rem;border-radius:11px;background:var(--canvas);border:1px solid var(--hairline)}.stat-box.wide{grid-column:1/-1}.stat-value{font-size:1.4rem;font-weight:600;margin-bottom:.2rem}.card-note,.contact-note,.stat-sub{color:var(--muted);line-height:1.47}.card-note{margin-top:1.2rem;padding-top:1.2rem;border-top:1px solid var(--hairline)}.cards-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:1rem;gap:1rem}.feature-card .emoji{font-size:1.5rem;margin-bottom:.9rem}.emphasis-card h2,.feature-card h3,.process-card h3{margin:0 0 .65rem;font-size:1.18rem}.process-list{display:grid;grid-gap:1rem;gap:1rem;max-width:960px}.process-card{display:grid;grid-template-columns:88px 1fr;grid-gap:1rem;gap:1rem;align-items:start}.process-step{width:72px;height:72px;border-radius:11px;display:grid;place-items:center;background:rgba(0,102,204,.08);color:var(--blue);font-weight:600}.about-card,.split-grid,.split-highlight{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));grid-gap:1.5rem;gap:1.5rem}.stack-list{display:grid;grid-gap:.8rem;gap:.8rem}.stack-list.compact{margin-top:1rem}.list-item{display:flex;gap:.8rem;align-items:flex-start;padding:1rem;border-radius:11px;border:1px solid var(--hairline);background:var(--canvas);line-height:1.47}.list-item.success span:first-child{color:var(--blue);font-weight:600}.list-item.bullet{color:var(--muted)}.list-item.bullet span:first-child{color:var(--blue);font-weight:600}.emphasis-card h2{font-size:1.7rem}.position-card{min-height:100%}.contact-wrap{padding-bottom:6rem}.contact-card{border-radius:0;padding:2.3rem 1.4rem;background:var(--dark-tile);text-align:center}.contact-card-form{text-align:left}.contact-card h2{margin-top:1rem}.contact-card p,.contact-note{color:rgba(255,255,255,.76)}.contact-note{margin-top:1.2rem;font-size:.95rem;text-align:center}.contact-panel{background:var(--oxtane-dark-tile)!important}.contact-panel,.contact-panel .contact-footnote,.contact-panel h2,.contact-panel label,.contact-panel p{color:#fff!important}.contact-panel input,.contact-panel textarea{color:#fff!important;caret-color:#fff}.contact-panel input::placeholder,.contact-panel textarea::placeholder{color:rgba(255,255,255,.78)!important;opacity:1}.contact-panel .contact-submit{color:#1d1d1f!important;background:#fff!important}.contact-panel .contact-direct{color:#fff!important;background:transparent!important}.sample-grid{align-items:stretch}.sample-table{display:grid;grid-gap:.75rem;gap:.75rem;margin-top:1rem}.sample-table-head,.sample-table-row{display:grid;grid-template-columns:1.1fr 1.4fr 1.4fr;grid-gap:.9rem;gap:.9rem;align-items:start}.sample-table-head{color:var(--blue);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;font-weight:600}.sample-table-row{border:1px solid var(--hairline);border-radius:11px;padding:1rem;background:var(--canvas);color:var(--muted);line-height:1.47}.sample-table-row strong{display:block;color:var(--ink);margin-bottom:.35rem}.sample-table-row em{color:var(--muted);font-style:normal;font-size:.9rem}.sample-note{margin-top:1rem}.audit-form{margin-top:1.4rem}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:1rem;gap:1rem}.audit-form label{display:grid;grid-gap:.45rem;gap:.45rem;color:var(--on-dark);font-weight:600}.audit-form label span{font-size:.92rem}.audit-form input,.audit-form textarea{width:100%;border:1px solid rgba(255,255,255,.28);background:transparent;color:var(--on-dark);border-radius:8px;padding:.9rem 1rem;font:inherit}.audit-form input::placeholder,.audit-form textarea::placeholder{color:rgba(255,255,255,.55)}.full-width{margin-top:1rem}.form-actions{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center;margin-top:1.4rem}@media (max-width:800px){[id]{scroll-margin-top:210px}.oxtane-header{align-items:flex-start!important;flex-direction:column;padding:.9rem 1rem!important}.oxtane-nav{width:100%;gap:.55rem!important}.oxtane-nav>a{font-size:.78rem!important}.topbar{padding:1rem}.section{padding:1.2rem 1rem}.hero{padding-top:3rem}.nav-links{gap:.7rem}.process-card{grid-template-columns:1fr}.process-step{width:56px;height:56px}.form-grid,.stats-grid{grid-template-columns:1fr}.sample-table-head{display:none}.sample-table-row{grid-template-columns:1fr}}