:root{--kachi-950:#090b11;--kachi-900:#0e1219;--kachi-850:#141822;--kachi-800:#1a1f2b;--kachi-750:#212737;--kachi-700:#2b3347;--kachi-600:#3a445c;--kachi-500:#54607d;--kachi-400:#75829d;--geppaku-50:#eff4fa;--geppaku-100:#e3eaf3;--geppaku-200:#cfdae7;--geppaku-300:#b0bfd1;--geppaku-400:#8fa0b5;--geppaku-500:#66758c;--ruri-800:#084c5a;--ruri-700:#0c5e6b;--ruri-600:#0c7184;--ruri-500:#109aae;--ruri-400:#1fb6cb;--ruri-300:#5fcedd;--ruri-200:#a6e3ec;--ruri-glow-25:#1fb6cb40;--ruri-glow-12:#1fb6cb1f;--ruri-tint-08:#109aae14;--hi-600:#b5290f;--hi-500:#d3381c;--hi-400:#e5512f;--hi-300:#f0795a;--hi-tint-10:#d3381c1a;--hi-glow-25:#e5512f40;--rokusho-700:#1f4a40;--rokusho-600:#2f6b5e;--rokusho-500:#3e8576;--rokusho-400:#5aa293;--rokusho-tint-10:#3e85761f;--yamabuki-600:#a8851a;--yamabuki-500:#c9a227;--yamabuki-400:#ddb94a;--yamabuki-tint-10:#c9a2271f;--fuji-500:#6a6e9e;--fuji-400:#9093be;--color-bg:#f7f9fc;--color-surface:#fff;--color-surface-card:#fff;--color-surface-raised:#fff;--color-surface-sunken:#eef3f8;--color-paper:#fff;--color-border:#d7e0ea;--color-border-strong:#b8c6d8;--color-border-faint:#15203314;--color-rule:var(--ruri-500);--text-primary:#152033;--text-secondary:#43546b;--text-faint:#65758a;--text-on-paper:var(--kachi-850);--text-on-brand:var(--geppaku-50);--brand:var(--ruri-500);--brand-strong:var(--ruri-600);--brand-bright:var(--ruri-400);--conf:var(--hi-400);--cloud:var(--rokusho-400);--allow:var(--rokusho-400);--suspicious:var(--yamabuki-500);--info:var(--fuji-400);--focus-ring:var(--ruri-400);--selection-bg:var(--ruri-glow-25);--font-display:"Shippori 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var(--font-mono);--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-8:3rem;--space-9:4rem;--space-10:5rem;--space-11:6rem;--space-12:8rem;--container-max:1200px;--container-wide:1360px;--container-prose:720px;--gutter:clamp(1.25rem, 5vw, 4rem);--corp-bar-maxw:var(--container-wide);--corp-bar-gut:var(--gutter);--control-h-sm:2rem;--control-h-md:2.75rem;--control-h-lg:3.5rem;--header-h:4.5rem;--radius-xs:2px;--radius-sm:4px;--radius-md:6px;--radius-lg:10px;--radius-pill:999px;--shadow-card:0 1px 2px #1520330f, 0 8px 24px #15203314;--shadow-pop:0 18px 48px #15203329;--glow-ruri-sm:0 0 0 1px var(--ruri-glow-25), 0 0 12px var(--ruri-glow-12);--glow-ruri-md:0 0 0 1px var(--ruri-glow-25), 0 0 24px var(--ruri-glow-25);--glow-ruri-text:0 0 18px var(--ruri-glow-25);--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--dur-fast:.12s;--dur-base:.22s;--dur-slow:.42s;--focus-shadow:0 0 0 2px var(--color-bg), 0 0 0 4px var(--focus-ring)}@media 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.rule{background:var(--ruri-600);width:22px;height:1px}.hk-prose{max-width:720px;line-height:var(--leading-body);color:var(--text-secondary)}.hk-prose strong{color:var(--text-primary);font-weight:var(--weight-medium)}.hk-icon{vertical-align:middle;display:inline-block}.corp-bar{background:var(--corp-bar-bg,#f4f6fb);border-bottom:1px solid var(--corp-bar-line,#d8deef)}.corp-bar__owner,.corp-bar__owner:hover,.corp-bar__links a,.corp-bar__links a:hover{text-decoration:none}.corp-bar__inner{max-width:var(--corp-bar-maxw,1160px);padding:0 var(--corp-bar-gut,clamp(20px, 4vw, 40px));align-items:center;gap:12px;height:36px;margin:0 auto;display:flex}.corp-bar__owner{align-items:center;gap:9px;min-width:0;text-decoration:none;display:inline-flex}.corp-bar__logo{border-radius:2px;flex:none;width:auto;height:18px}.corp-bar__owner-text{letter-spacing:.01em;color:var(--corp-bar-muted,#4a5170);white-space:nowrap;text-overflow:ellipsis;font-size:12px;font-weight:500;transition:color .18s ease-out;overflow:hidden}.corp-bar__owner:hover .corp-bar__owner-text{color:var(--corp-bar-fg,#1a1e30)}.corp-bar__links{align-items:center;gap:20px;margin:0 0 0 auto;padding:0;list-style:none;display:flex}.corp-bar__links a{color:var(--corp-bar-fg,#1a1e30);white-space:nowrap;align-items:center;gap:5px;font-size:12.5px;font-weight:500;text-decoration:none;transition:color .18s ease-out;display:inline-flex}.corp-bar__links a:hover{color:var(--corp-bar-accent,#2f4bc7)}.corp-bar__chev{width:9px;height:9px;color:var(--corp-bar-accent,#2f4bc7);flex:none;transition:transform .18s ease-out}.corp-bar__links a:hover .corp-bar__chev{transform:translate(2px)}@media (width<=640px){.corp-bar__owner-tail,.corp-bar__link--wide{display:none}.corp-bar__links{gap:14px}}.hk-btn{border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font-sans);font-weight:var(--weight-bold);letter-spacing:.01em;white-space:nowrap;user-select:none;transition:background var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out);border:1px solid #0000;justify-content:center;align-items:center;line-height:1;text-decoration:none;display:inline-flex}.hk-btn--mono{font-family:var(--font-mono);font-weight:var(--weight-medium);letter-spacing:var(--tracking-label);text-transform:uppercase}.hk-btn:active{transform:translateY(1px)}.hk-btn--primary:hover{background:var(--brand-bright);box-shadow:var(--glow-ruri-md)}.hk-btn--secondary{background:var(--color-surface-raised);color:var(--text-primary);border-color:var(--color-border-strong)}.hk-btn--secondary:hover{border-color:var(--brand);color:var(--geppaku-50)}.hk-btn--ghost:hover{border-color:var(--brand);color:var(--brand-bright)}.hk-btn--sm{height:var(--control-h-sm);padding:0 var(--space-3);font-size:var(--text-xs);gap:6px}.hk-btn--md{height:var(--control-h-md);padding:0 var(--space-5);font-size:var(--text-sm);gap:8px}.hk-btn--lg{height:var(--control-h-lg);padding:0 var(--space-6);font-size:var(--text-base);gap:8px}.hk-badge{font-family:var(--font-mono);font-weight:var(--weight-medium);font-size:var(--text-2xs);letter-spacing:var(--tracking-wide);text-transform:uppercase;border-radius:var(--radius-xs);white-space:nowrap;border:1px solid #0000;align-items:center;gap:.45em;padding:.4em .7em;line-height:1;display:inline-flex}.hk-badge .hk-badge__dot{border-radius:var(--radius-pill);background:currentColor;flex:none;width:6px;height:6px}.hk-card{background:var(--color-surface-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);box-shadow:var(--shadow-card);position:relative;overflow:hidden}.hk-card--interactive{transition:border-color var(--dur-base) var(--ease-out),transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) 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var(--color-border);border-radius:var(--radius-md);font-family:var(--font-mono);font-size:var(--text-sm);background:#070a10;line-height:1.7;overflow:hidden}.hk-policy__bar{border-bottom:1px solid var(--color-border);background:linear-gradient(#161b26,#0d1119);align-items:center;gap:.5em;padding:.55em .85em;display:flex}.hk-policy__name{font-size:var(--text-xs);color:var(--text-secondary);letter-spacing:var(--tracking-wide)}.hk-policy__tag{font-size:var(--text-2xs);text-transform:uppercase;letter-spacing:var(--tracking-label);color:var(--ruri-300);margin-left:auto}.hk-policy__body{padding:.9em 1.05em;overflow-x:auto}.hk-policy__ln{white-space:pre;color:var(--geppaku-300);display:block}.hk-policy__ln .allow{color:var(--rokusho-400);font-weight:var(--weight-medium)}.hk-policy__ln .deny{color:var(--hi-300);font-weight:var(--weight-medium)}.hk-policy__ln .blue{color:var(--ruri-300);font-weight:var(--weight-medium)}.hk-bar{grid-template-columns:var(--bar-label,160px) 1fr 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auto;display:flex}.site-header__nav{gap:4px;margin-left:8px;display:flex}.site-header__nav a{font-size:var(--text-sm);color:var(--text-secondary);border-radius:var(--radius-sm);transition:color var(--dur-fast);white-space:nowrap;padding:8px 12px;font-weight:500}.site-header__nav a:hover{color:var(--text-primary)}.site-header__nav a[aria-current=page]{color:var(--brand-bright)}.site-header__right{align-items:center;gap:12px;margin-left:auto;display:flex}.site-header__lang{font-family:var(--font-mono);font-size:var(--text-xs);color:var(--text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-xs);white-space:nowrap;letter-spacing:.06em;padding:5px 9px}@media (width<=900px){.site-header__nav{display:none}}.hk-wordmark{align-items:center;gap:11px;display:inline-flex}.hk-wordmark__text{font-family:var(--font-display);letter-spacing:.01em;color:var(--geppaku-100);align-items:baseline;gap:5px;font-weight:800;line-height:1;display:inline-flex}.hk-wordmark__ja{opacity:.6;font-weight:600}.hk-section{padding:var(--space-12) var(--gutter);position:relative}.hk-section__inner{max-width:var(--container-max);margin:0 auto}.sec-bordered{border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}.sec-bordered-top{border-top:1px solid var(--color-border)}.rb-video{max-width:960px}.rb-video .sec-head{margin-bottom:var(--space-6)}.rb-video__frame{aspect-ratio:16/9;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);overflow:hidden}.rb-video__frame video{width:100%;height:100%;display:block}.rb-video__note{margin:var(--space-4) 0 var(--space-5);font-size:var(--text-sm);color:var(--text-secondary);text-wrap:pretty}.rb-video__transcript{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface)}.rb-video__transcript summary{padding:var(--space-4) var(--space-5);cursor:pointer;font-weight:var(--weight-semibold)}.rb-video__text{padding:0 var(--space-5) var(--space-5);color:var(--text-secondary)}.rb-video__text p{margin:0 0 var(--space-3)}.rb-video__text p:last-child{margin-bottom:0}.cta-band{border-top:1px solid var(--color-border);background:radial-gradient(90% 140% at 50% 0%, var(--ruri-glow-12), transparent 60%), var(--color-surface-sunken)}.cta-band__inner{max-width:var(--container-max);padding:var(--space-12) var(--gutter);text-align:center;margin:0 auto}.cta-band h2{font-family:var(--font-display);color:var(--text-primary);letter-spacing:0;text-wrap:balance;min-width:0;margin:20px 0 0;font-size:clamp(2.2rem,5vw,4rem);font-weight:800}.cta-band__lead{font:var(--type-lead);color:var(--text-secondary);max-width:560px;margin:18px auto 0}.cta-band .cta-note{color:var(--on-dark-3);margin:14px 0 0;font-size:13px}.cta-band__actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:30px;display:flex}.site-footer{border-top:1px solid var(--color-border);background:var(--color-bg)}.site-footer__grid{max-width:var(--container-wide);padding:var(--space-9) var(--gutter) var(--space-6);grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:32px;margin:0 auto;display:grid}@media (width<=900px){.site-footer__grid{grid-template-columns:1fr 1fr}}@media (width<=560px){.site-footer__grid{grid-template-columns:1fr}}.site-footer__about{font-size:var(--text-sm);color:var(--text-secondary);max-width:300px;margin:16px 0 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small{font-size:var(--text-2xs);color:var(--text-faint);font-family:var(--font-sans)}.hw-meta--in{left:28px}.hw-meta--out{text-align:right;right:28px}.hw-lane{height:150px;margin-top:30px;position:relative}.hw-line{background:linear-gradient(90deg, transparent, var(--kachi-600) 6%, var(--kachi-600) 94%, transparent);height:2px;position:absolute;top:50%;left:0;right:0;transform:translateY(-50%)}.hw-line:after{content:"";background:linear-gradient(90deg, transparent, var(--ruri-glow-25) 50%, transparent);background-repeat:no-repeat;background-size:40% 100%;animation:3.6s linear infinite hw-sheen;position:absolute;inset:0}.hw-mark{z-index:3;justify-content:center;align-items:center;width:64px;height:70px;display:flex;position:absolute;top:50%;left:58%;transform:translate(-50%,-50%)}.hw-mark svg{width:64px;height:70px;filter:drop-shadow(0 0 16px var(--ruri-glow-25));color:var(--geppaku-100)}.hw-mark-glow{background:radial-gradient(circle, var(--ruri-glow-25), transparent 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