.sec-header{z-index:100;--hdr-ink:var(--color-ink-on-dark);--hdr-ink-soft:var(--color-ink-on-dark-soft);--hdr-logo-filter:invert(1) brightness(.94) sepia(.08);--hdr-line:var(--color-line-on-dark);--hdr-burger-h:1.5px;background-color:#0000;border-bottom:1px solid #0000;transition:background-color .3s,border-color .3s;position:fixed;inset:0 0 auto}.sec-header[data-hdr-solid]{background-color:var(--color-paper);border-bottom-color:var(--color-line);--hdr-ink:var(--color-ink);--hdr-ink-soft:var(--color-ink-soft);--hdr-logo-filter:none;--hdr-line:var(--color-line);--hdr-burger-h:1px}.sec-header[data-hdr-solid][data-hdr-paper=warm]{background-color:var(--color-paper-warm)}.sec-header[data-hdr-solid][data-hdr-paper=white]{background-color:var(--color-paper-white)}.sec-header[data-hdr-solid][data-hdr-dark],.sec-header[data-hdr-solid][data-hdr-paper=sumi]{background-color:var(--color-sumi-deep);border-bottom-color:var(--color-line-on-dark);--hdr-ink:var(--color-ink-on-dark);--hdr-ink-soft:var(--color-ink-on-dark-soft);--hdr-logo-filter:invert(1) brightness(.94) sepia(.08);--hdr-line:var(--color-line-on-dark);--hdr-burger-h:1.5px}.sec-header-bar{z-index:2;justify-content:space-between;align-items:center;gap:var(--space-inner);height:72px;padding-inline:var(--space-gutter);display:flex;position:relative}.sec-header-logo{flex:none;align-items:center;display:inline-flex}.sec-header-logo img{width:auto;height:32px;filter:var(--hdr-logo-filter);transition:filter .3s}.sec-header-nav{align-items:center;gap:clamp(1.25rem,2.2vw,2.25rem);margin-left:auto;display:flex}.sec-header-navlink{font-family:var(--font-serif-en);letter-spacing:.08em;color:var(--hdr-ink);font-size:14px;font-style:normal;font-weight:500;line-height:1.4;transition:color .3s}.sec-header-actions{flex:none;align-items:center;gap:clamp(1rem,1.8vw,1.75rem);display:flex}.sec-header-lang{font-family:var(--font-serif-en);letter-spacing:.08em;align-items:baseline;gap:.55em;font-size:14px;font-weight:400;line-height:1.4;display:flex}.sec-header-lang a{color:var(--hdr-ink-soft);background-image:linear-gradient(currentColor,currentColor);background-position:0 100%;background-repeat:no-repeat;background-size:0% 1px;padding-bottom:2px;transition:color .3s,opacity .3s,background-size .35s}.sec-header-lang a[aria-current=page]{color:var(--hdr-ink);opacity:1;background-size:100% 1px}:is(.sec-header-lang a:hover,.sec-header-lang a:focus-visible){opacity:1;background-size:100% 1px}.sec-header-lang-sep{color:var(--hdr-line);transition:color .3s}.sec-header-reserve{background:var(--color-bengara);border:1px solid var(--color-bengara);color:var(--color-paper);font-family:var(--font-mincho);font-size:var(--text-caption);letter-spacing:.2em;border-radius:9999px;justify-content:center;align-items:center;padding:.65em 1.4em .65em 1.6em;font-weight:400;line-height:1;transition:background-color .3s,border-color .3s;display:inline-flex}:is(.sec-header-reserve:hover,.sec-header-reserve:focus-visible){background:var(--color-bengara-deep);border-color:var(--color-bengara-deep)}.sec-header:not([data-hdr-solid]) .sec-header-reserve{border-color:#f0ebe0b3}.sec-header-burger{cursor:pointer;background:0 0;border:0;border-radius:0;width:44px;height:44px;margin-right:-10px;padding:0;display:none;position:relative}.sec-header-burger-line{width:24px;height:var(--hdr-burger-h);background:var(--hdr-ink);transition:transform .4s cubic-bezier(.22,.1,.12,1),background-color .3s;position:absolute;left:10px}.sec-header-burger-line:first-child{top:18px}.sec-header-burger-line:nth-child(2){top:26px}.sec-header[data-menu-open] .sec-header-burger-line:first-child{transform:translateY(4px)rotate(20deg)}.sec-header[data-menu-open] .sec-header-burger-line:nth-child(2){transform:translateY(-4px)rotate(-20deg)}.sec-header.sec-header[data-menu-open]{--hdr-ink:var(--color-ink);--hdr-ink-soft:var(--color-ink-soft);--hdr-logo-filter:none;--hdr-line:var(--color-line);--hdr-burger-h:1px}.sec-header-overlay{z-index:1;padding:calc(60px + var(--space-block)) var(--space-gutter) calc(var(--space-inner) + env(safe-area-inset-bottom,0px));background:var(--color-paper);opacity:0;visibility:hidden;flex-direction:column;justify-content:space-between;transition:opacity .4s,visibility 0s linear .4s;display:flex;position:fixed;inset:0;overflow-y:auto}.sec-header[data-menu-open] .sec-header-overlay{opacity:1;visibility:visible;transition:opacity .4s}.sec-header-overlay-nav{flex-direction:column;display:flex}.sec-header-overlay-link{border-bottom:1px solid var(--color-line);opacity:0;align-items:baseline;gap:1em;padding:.85rem 0;transition:opacity .4s,transform .4s;display:flex;transform:translateY(12px)}.sec-header[data-menu-open] .sec-header-overlay-link{opacity:1;transform:none}.sec-header-overlay-ja{font-family:var(--font-mincho);letter-spacing:.18em;color:var(--color-ink);font-size:1.25rem;font-weight:400;line-height:1.8}.sec-header-overlay-en{font-family:var(--font-serif-en);font-size:var(--text-caption);letter-spacing:.06em;color:var(--color-ink-soft);font-style:italic;font-weight:400;line-height:1.4}.sec-header-overlay-en-main{font-family:var(--font-serif-en);letter-spacing:.06em;color:var(--color-ink);font-size:1.5rem;font-style:italic;font-weight:400;line-height:1.4}.sec-header-overlay-foot{align-items:flex-start;gap:var(--space-inner);padding-top:var(--space-block);flex-direction:column;display:flex}.sec-header-overlay-reserve{background:var(--color-bengara);border:1px solid var(--color-bengara);width:100%;min-height:56px;color:var(--color-paper);font-family:var(--font-mincho);font-size:var(--text-body);letter-spacing:.2em;border-radius:9999px;justify-content:center;align-items:center;gap:.6em;padding:.9em 2.4em;font-weight:400;line-height:1;transition:background-color .3s,border-color .3s;display:inline-flex}:is(.sec-header-overlay-reserve:hover,.sec-header-overlay-reserve:focus-visible){background:var(--color-bengara-deep);border-color:var(--color-bengara-deep)}.sec-header-overlay-lang{font-family:var(--font-serif-en);font-size:var(--text-label);letter-spacing:.08em;align-self:center;align-items:baseline;gap:.75em;line-height:1.4;display:flex}.sec-header-overlay-lang a{color:var(--color-ink);opacity:.7;padding:.5em .25em}.sec-header-overlay-lang a[aria-current=page]{opacity:1;text-underline-offset:.3em;text-decoration:underline;text-decoration-thickness:1px}.sec-header-overlay-lang span{color:var(--color-line)}@media (max-width:767px){.sec-header-bar{height:60px}.sec-header-logo img{height:28px}.sec-header-nav,.sec-header-lang{display:none}.sec-header-actions{gap:.75rem}.sec-header-reserve{min-height:44px;transition:background-color .3s,border-color .3s,opacity .3s,visibility 0s linear .3s}:root[data-past-hero] .sec-header-reserve{opacity:0;visibility:hidden;pointer-events:none}.sec-header-burger{display:block}.sec-header-overlay{padding-top:calc(60px + clamp(2rem,6vh,4rem))}}@media (min-width:768px){.sec-header-overlay{display:none}}.sec-header-float{z-index:90;opacity:0;visibility:hidden;color:var(--color-ink-on-dark);box-sizing:border-box;background:#1c1813d9;border:1px solid #0000;border-radius:9999px;transition:opacity .4s,visibility 0s linear .4s,border-color .3s;position:fixed}.sec-header-float[data-visible]{opacity:1;visibility:visible;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:opacity .4s,border-color .3s}.sec-header-float[data-on-dark]{border-color:var(--color-ink-on-dark);color:var(--color-ink-on-dark);background:#1c1813d9}:is(.sec-header-float:hover,.sec-header-float:focus-visible){background:#1c1813f2}:is(.sec-header-float[data-on-dark]:hover,.sec-header-float[data-on-dark]:focus-visible){border-color:var(--color-ink-on-dark);background:#1c1813f2}.sec-header-float{width:88px;height:88px;bottom:24px;right:12px}.sec-header-float-circle{flex-direction:column;justify-content:center;align-items:center;gap:.3em;width:100%;height:100%;display:flex}.sec-header-float-main{font-family:var(--font-mincho);letter-spacing:.2em;margin-right:-.2em;font-size:13px;font-weight:400;line-height:1}.sec-header-float-sub{font-family:var(--font-serif-en);letter-spacing:.06em;opacity:.75;font-size:11px;font-style:italic;font-weight:400;line-height:1}.sec-header-float-bar{display:none}@media (max-width:767px){.sec-header-float{left:16px;right:16px;bottom:calc(12px + env(safe-area-inset-bottom,0px));justify-content:center;align-items:center;width:calc(100% - 32px);height:56px;display:flex}.sec-header-float-circle{display:none}.sec-header-float-bar{font-family:var(--font-mincho);font-size:var(--text-body);letter-spacing:.2em;margin-right:-.2em;font-weight:400;line-height:1;display:block}}@media (prefers-reduced-motion:reduce){.sec-header,.sec-header-reserve,.sec-header-logo img,.sec-header-navlink,.sec-header-lang a,.sec-header-burger-line,.sec-header-overlay,.sec-header-overlay-link,.sec-header-float{transition:none}.sec-header-overlay-link{transition-delay:0s!important}}