:root{--bg-color: #6B1F23;--bg-color-secondary: #E8E2D6;--bg-black: #0d0806;--text-primary: #ffffff;--text-secondary: #bbaea6;--text-on-light: #1a120d;--text-on-light-muted: #5c4a3c;--font-sans: "Montserrat", sans-serif;--header-height: 80px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{background-color:var(--bg-color);color:var(--text-primary);font-family:var(--font-sans);line-height:1.6;overflow-x:hidden}a{color:inherit;text-decoration:none}.surface-dark{background-color:var(--bg-color);color:var(--text-primary)}.surface-black{background-color:var(--bg-black);color:var(--text-primary)}.surface-light{background-color:var(--bg-color-secondary);color:var(--text-on-light);--text-primary: var(--text-on-light);--text-secondary: var(--text-on-light-muted)}.surface-white{background-color:#fff;color:var(--text-on-light);--text-primary: var(--text-on-light);--text-secondary: var(--text-on-light-muted)}h1 .ja,h2 .ja,h3 .ja{font-family:Yuji Syuku,serif;font-weight:400}.en{display:none}[data-lang=en] .en{display:revert}[data-lang=en] .ja{display:none}.site-header{position:fixed;top:0;left:0;width:100%;height:var(--header-height);background-color:var(--bg-color);backdrop-filter:blur(5px);display:flex;justify-content:space-between;align-items:center;padding:0 40px;z-index:100}.header-left{display:flex;align-items:center;gap:15px;min-width:0;overflow:hidden}.header-right{display:flex;align-items:center;gap:16px;flex-shrink:0}.logo-box img{width:56px;height:56px;border-radius:4px}.site-title-block{display:flex;flex-direction:column;gap:3px;min-width:0;overflow:hidden}.l-1{font-size:clamp(.6rem,2.5vw,.85rem);font-weight:600;letter-spacing:clamp(0px,.15vw,1.5px);white-space:nowrap;overflow:hidden}.l-2{font-size:clamp(.5rem,1.8vw,.65rem);font-weight:400;letter-spacing:clamp(0px,.1vw,1px);color:var(--text-secondary);white-space:nowrap;overflow:hidden}.lang-btn{background:#ffffff14;border:1px solid rgba(255,255,255,.35);color:#fff;font-family:var(--font-sans);font-size:.72rem;font-weight:600;letter-spacing:2.5px;padding:8px 16px;cursor:pointer;border-radius:20px;transition:background .25s ease,border-color .25s ease,transform .15s ease;white-space:nowrap;min-height:36px;display:inline-flex;align-items:center;gap:0}.lang-btn .lang-ja,.lang-btn .lang-en,[data-lang=ja] .lang-btn .lang-ja{display:inline}[data-lang=ja] .lang-btn .lang-en{display:none}[data-lang=en] .lang-btn .lang-en{display:inline}[data-lang=en] .lang-btn .lang-ja{display:none}.lang-btn:hover{background:#ffffff2e;border-color:#ffffffb3;transform:translateY(-1px)}.lang-btn:active{transform:translateY(0)}.drawer-lang{margin-bottom:24px}.lang-btn--drawer{width:100%;border-radius:10px;padding:14px 20px;background:#ffffff0d;border:1px solid rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;gap:12px;min-height:60px}.lang-btn--drawer:hover{background:#ffffff1a;border-color:#ffffff59;transform:none}.drawer-lang-ja,.drawer-lang-en{display:flex;flex-direction:column;align-items:center;gap:3px;transition:color .25s ease,opacity .25s ease;opacity:.4}.drawer-lang-ja[data-active=true],.drawer-lang-en[data-active=true]{opacity:1;color:#fff}.drawer-lang-label{font-size:.9rem;font-weight:600;letter-spacing:1px;display:block}.drawer-lang-sub{font-size:.65rem;letter-spacing:1.5px;font-weight:400;color:inherit;display:block;opacity:.7}.drawer-lang-divider{font-size:1.1rem;color:#ffffff40;font-weight:300}.hamburger{background:none;border:none;cursor:pointer;display:flex;flex-direction:column;gap:6px;padding:10px;z-index:101}.hamburger .bar{display:block;width:30px;height:2px;background-color:var(--text-primary);transition:.3s 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ease}.overlay.open{opacity:1;visibility:visible}.site-footer{background-color:var(--bg-color);padding:48px 40px 32px;border-top:1px solid rgba(255,255,255,.1)}.footer-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--text-secondary)}.social-links{display:flex;gap:0}.social-links a{padding:4px 16px;border-left:1px solid rgba(255,255,255,.15);transition:color .3s ease}.social-links a:first-child{border-left:none;padding-left:0}.social-links a:hover{color:var(--text-primary)}.container{max-width:1200px;margin:0 auto;padding:calc(100px + var(--header-height)) 40px 100px;display:flex;flex-direction:column}.fade-in-title span{display:inline-block;opacity:0;transform:translateY(20px);animation:titleFadeIn .8s ease forwards}.fade-in-title .line-1{animation-delay:.2s}.fade-in-title .line-2{animation-delay:.5s}@keyframes titleFadeIn{to{opacity:1;transform:translateY(0)}}.hero-fade{opacity:0;animation:heroImageFade 1s 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ease}.global-cta-btn:hover{background-color:var(--bg-color-secondary);transform:translateY(-3px);box-shadow:0 12px 30px #0006}@media(max-width:900px){.site-header{padding:0 20px}.drawer-menu{width:80%}.footer-content{flex-direction:column;gap:15px;text-align:center}}