:root{--blue:#075eb5;--blue-dark:#034887;--sky:#eaf4ff;--ink:#142033;--muted:#5f6c7b;--line:#d9e1ea;--bg:#f4f7fa;--white:#fff;--radius:22px;--base:18px;--shadow:0 10px 30px rgba(9,50,92,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:var(--base)/1.65 system-ui,-apple-system,"Segoe UI","Noto Sans JP",sans-serif;padding-bottom:92px}button,a,input{font:inherit}button,a{touch-action:manipulation}.skip-link{position:fixed;left:12px;top:-80px;background:#000;color:#fff;padding:12px;z-index:99}.skip-link:focus{top:12px}.topbar{height:86px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:10px max(18px,env(safe-area-inset-left));position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:11px;background:none;border:0;color:var(--ink);text-align:left;padding:5px;min-height:56px;cursor:pointer}.brand strong{display:block;font-size:.88rem;letter-spacing:.06em}.brand small{display:block;color:var(--muted);font-size:.7rem;line-height:1.2}.brand-mark{width:49px;height:49px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:900;letter-spacing:-.06em;box-shadow:inset 0 0 0 4px rgba(255,255,255,.2)}.brand-mark.large{width:88px;height:88px;font-size:1.55rem}.small-button{min-width:48px;min-height:48px;border:2px solid var(--blue);color:var(--blue);background:#fff;border-radius:14px;font-weight:800;cursor:pointer}main{max-width:1060px;margin:auto}.view{display:none;padding:22px 18px 36px}.view.active{display:block}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.featured{background:#fff;border-radius:28px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:20px}.hero-image{min-height:310px;position:relative;background-size:cover;background-position:center;display:flex;align-items:flex-end}.hero-image:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(2,20,38,.9))}.hero-content{position:relative;z-index:1;color:#fff;padding:25px;width:100%}.live-pill,.new-badge{display:inline-flex;align-items:center;gap:7px;background:#fff;color:var(--blue-dark);padding:5px 10px;border-radius:99px;font-size:.72rem;font-weight:900;letter-spacing:.08em}.live-pill:before{content:"";width:9px;height:9px;border-radius:50%;background:#f04444}.hero-content h2{font-size:clamp(1.65rem,6vw,2.55rem);line-height:1.25;margin:12px 0}.event-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-weight:700}.join-area{padding:20px}.join-button,.secondary-button,.detail-button,.save-button{min-height:58px;border-radius:16px;border:0;padding:12px 18px;font-weight:900;cursor:pointer;text-decoration:none;display:flex;align-items:center;justify-content:center;text-align:center}.join-button{background:var(--blue);color:#fff;font-size:1.18rem;box-shadow:0 7px 0 var(--blue-dark)}.join-button:active{transform:translateY(3px);box-shadow:0 4px 0 var(--blue-dark)}.join-button small{font-size:.72rem;font-weight:600;margin-left:10px}.join-note{text-align:center;color:var(--muted);font-size:.84rem;margin:13px 0 0}.notice-panel,.prose-card,.settings-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:20px 0}.section-heading{display:flex;align-items:center;gap:10px}.eyebrow{color:var(--blue);font-size:.76rem;letter-spacing:.14em;font-weight:900;margin:0}.new-badge{background:#eaf4ff;padding:3px 9px}.notice-panel h2{margin:8px 0 4px;font-size:1.25rem}.notice-panel p{margin:0;color:var(--muted)}.home-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.quick-card{border:1px solid var(--line);background:#fff;border-radius:20px;padding:22px 12px;min-height:150px;text-align:center;cursor:pointer;color:var(--ink)}.quick-card>span{display:block;font-size:2rem}.quick-card strong,.quick-card small{display:block}.quick-card small{color:var(--muted)}.page-heading{padding:16px 4px 10px}.page-heading h1{font-size:clamp(1.8rem,6vw,2.7rem);margin:3px 0}.page-heading p{margin:0;color:var(--muted)}.card-list{display:grid;gap:18px}.walk-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:grid;grid-template-columns:180px 1fr}.walk-photo{min-height:210px;background-size:cover;background-position:center}.walk-body{padding:22px}.walk-body h2{margin:4px 0;font-size:1.25rem;line-height:1.35}.walk-body p{margin:5px 0;color:var(--muted)}.walk-actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}.walk-actions a,.walk-actions button{min-height:48px}.secondary-button{background:var(--blue);color:#fff}.detail-button{background:var(--sky);color:var(--blue-dark)}.about-hero{text-align:center;padding:34px 0 8px}.about-hero .brand-mark{margin:auto}.about-hero h1{font-size:2rem;margin:3px}.prose-card{font-size:1.08rem}.prose-card blockquote{margin:28px 0;border-left:5px solid var(--blue);padding:10px 18px;color:var(--blue-dark);font-size:1.35rem;font-weight:900}.values{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.values div{background:var(--sky);border-radius:16px;padding:18px 8px;text-align:center}.values b,.values span{display:block}.values b{font-size:1.8rem}.settings-card fieldset{border:0;border-bottom:1px solid var(--line);padding:18px 0;margin:0}.settings-card legend{font-weight:900;margin-bottom:10px}.segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.segmented button{min-height:50px;border:2px solid var(--line);background:#fff;border-radius:12px;font-weight:800;cursor:pointer}.segmented button.selected{background:var(--blue);border-color:var(--blue);color:#fff}.toggle-row,.admin-link{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:22px 0;border-bottom:1px solid var(--line)}.toggle-row small,.admin-link small{display:block;color:var(--muted)}.toggle-row input{width:28px;height:28px}.admin-link{color:var(--ink);text-decoration:none;border-bottom:0}.bottom-nav{position:fixed;z-index:30;bottom:0;left:0;right:0;background:rgba(255,255,255,.97);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr);padding:7px max(5px,env(safe-area-inset-right)) calc(7px + env(safe-area-inset-bottom));box-shadow:0 -5px 20px rgba(0,0,0,.06)}.bottom-nav button{border:0;background:none;min-height:60px;color:var(--muted);border-radius:12px;font-weight:800;cursor:pointer}.bottom-nav button>span,.bottom-nav button>small{display:block}.bottom-nav button>span{font-size:1.35rem;line-height:1}.bottom-nav button.active{color:var(--blue);background:var(--sky)}#toast{position:fixed;left:50%;bottom:100px;transform:translateX(-50%) translateY(30px);background:#142033;color:#fff;border-radius:14px;padding:12px 18px;opacity:0;pointer-events:none;transition:.2s;z-index:80;white-space:nowrap}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}:focus-visible{outline:4px solid #ffbd00;outline-offset:3px}html[data-size=large]{--base:20px}html[data-size=xlarge]{--base:23px}.admin-shell{max-width:880px;margin:0 auto;padding:22px 18px 50px}.back-link{color:var(--blue-dark);font-weight:800}.admin-header h1{font-size:2rem;margin-bottom:0}.admin-header p{color:var(--muted)}.admin-notice{background:#fff5d9;border:1px solid #e8c867;padding:14px;border-radius:14px}.admin-form{background:#fff;padding:22px;border-radius:var(--radius);margin:20px 0;box-shadow:var(--shadow)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-field{display:grid;gap:6px}.form-field.full{grid-column:1/-1}.form-field label{font-weight:800}.form-field input,.form-field textarea,.form-field select{min-height:50px;border:2px solid var(--line);border-radius:12px;padding:10px;background:#fff;color:var(--ink)}.form-field textarea{min-height:100px}.save-button{background:var(--blue);color:#fff;width:100%;margin-top:18px}.admin-list{display:grid;gap:12px}.admin-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;justify-content:space-between;gap:12px;align-items:center}.admin-item h3,.admin-item p{margin:0}.admin-item p{color:var(--muted)}.admin-item button{min-height:46px;border:1px solid var(--blue);color:var(--blue);background:#fff;border-radius:12px;padding:8px 14px;font-weight:800}@media(max-width:650px){.brand strong{font-size:.76rem}.brand small{font-size:.6rem}.topbar{height:76px}.hero-image{min-height:350px}.walk-card{grid-template-columns:1fr}.walk-photo{min-height:190px}.values{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.form-field.full{grid-column:auto}.bottom-nav button small{font-size:.62rem}.home-grid{grid-template-columns:1fr 1fr}.quick-card{min-height:135px;padding:16px 8px}}@media(min-width:820px){body{padding-bottom:0}.bottom-nav{position:sticky;top:86px;bottom:auto;max-width:1060px;margin:auto;border:1px solid var(--line);border-radius:0 0 18px 18px;box-shadow:none}.view{padding-top:34px}}