:root{--shell-primary:#d62828;--shell-accent:#f9c80e;--shell-bg:#fffaf0;--shell-text:#2b1717;--shell-border:#eadfd3}
.site-header{position:relative;z-index:60;max-width:1440px;margin:auto;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.site-brand{display:flex;min-width:0;align-items:center;gap:9px;color:var(--shell-text);font-weight:900;text-decoration:none;border-radius:10px}
.site-brand:focus-visible,.desktop-nav a:focus-visible,.desktop-nav button:focus-visible,.info-menu summary:focus-visible,.mobile-nav summary:focus-visible,.mobile-nav a:focus-visible,.mobile-nav button:focus-visible{outline:3px solid var(--shell-accent);outline-offset:2px}
.site-brand span{min-width:0}.site-brand small{display:block;color:#745f5f;font-size:.68rem;font-weight:650;max-width:190px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.site-mark{display:block;flex:0 0 auto;width:42px;height:42px}.desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:2px}.desktop-nav a,.desktop-nav button,.mobile-nav a,.mobile-nav button,.info-menu summary{color:var(--shell-text);font:700 .81rem/1.2 system-ui,sans-serif;text-decoration:none;background:transparent;border:0;border-radius:9px;padding:9px 8px;cursor:pointer;white-space:nowrap}.desktop-nav a:hover,.desktop-nav button:hover,.info-menu summary:hover{background:#fff}.notice-badge{color:#b91c1c;font-weight:900}.info-menu{position:relative}.info-menu summary{list-style:none}.info-menu summary::-webkit-details-marker{display:none}.info-menu>div{position:absolute;top:calc(100% + 7px);left:0;z-index:70;min-width:230px;background:#fff;border:1px solid var(--shell-border);border-radius:12px;padding:7px;box-shadow:0 12px 30px #2b171722}.info-menu>div a{display:block;white-space:normal}.mobile-nav{display:none;position:relative}.mobile-nav summary{list-style:none;cursor:pointer;padding:10px 12px;border:1px solid var(--shell-border);border-radius:11px;background:#fff;font:800 .9rem system-ui}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav nav{position:absolute;right:0;top:calc(100% + 7px);z-index:80;width:min(90vw,330px);max-height:calc(100dvh - 90px);overflow:auto;overscroll-behavior:contain;padding:9px;background:#fff;border:1px solid var(--shell-border);border-radius:14px;box-shadow:0 14px 36px rgba(15,23,42,.16)}.mobile-nav a,.mobile-nav button{display:block;width:100%;min-height:44px;text-align:left;padding:12px;white-space:normal}.mobile-menu-label{display:block;padding:12px 12px 4px;color:#8a6666;font-size:.7rem;text-transform:uppercase;letter-spacing:.08em}.install-help,.notice-modal{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:20px;background:rgba(43,23,23,.64)}.install-help[hidden],.notice-modal[hidden],.global-back-top[hidden]{display:none}.install-help>div,.notice-modal>div{position:relative;width:min(100%,440px);padding:22px;background:#fff;border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.25)}.install-help h2,.notice-modal h2{margin:0 30px 10px 0}.install-help p,.notice-modal p{line-height:1.55}.install-close,[data-notice-close]{position:absolute;right:12px;top:10px;border:0;background:transparent;font-size:1.8rem;cursor:pointer}.notice-kind{display:inline-block;margin-bottom:10px;font-size:.72rem;font-weight:900;color:var(--shell-primary);letter-spacing:.08em}.notice-modal [data-notice-ack]{border:0;border-radius:10px;background:var(--shell-primary);color:#fff;padding:11px 18px;font-weight:850;cursor:pointer}.global-back-top{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:calc(18px + env(safe-area-inset-bottom));z-index:45;width:48px;height:48px;border:0;border-radius:50%;background:#2b1717;color:#fff;font-size:1.3rem;font-weight:900;box-shadow:0 8px 24px #2b171733;cursor:pointer}
.desktop-nav a[aria-current="page"],.info-menu.is-active>summary,.info-menu a[aria-current="page"],.mobile-nav a[aria-current="page"],.mobile-menu-label.is-active{background:color-mix(in srgb,var(--shell-primary) 14%,#fff);color:var(--shell-primary);font-weight:900}
@media(max-width:1020px){.desktop-nav a,.desktop-nav button,.info-menu summary{padding-left:6px;padding-right:6px;font-size:.76rem}}
@media(max-width:900px){.desktop-nav{display:none}.mobile-nav{display:block}.site-header{padding:11px 13px}.site-brand small{max-width:180px}}
@media(max-width:360px){.site-brand small{max-width:145px}.site-mark{width:38px;height:38px}}
@media(display-mode:standalone){[data-install-pwa]{display:none!important}}