@import "https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;600;700;900&display=swap";
:root{--yamanote-green:#80c241;--yamanote-green-dark:#5a9a2e;--yamanote-green-light:#a8d96c;--yamanote-green-glow:#80c24166;--bg-primary:#fff;--bg-secondary:#f4f9f0;--bg-card:#fff;--bg-card-hover:#f8fbf5;--bg-elevated:#fff;--text-primary:#2c3e30;--text-secondary:#5c7060;--text-muted:#8ba090;--text-accent:#80c241;--border-color:#e0ebd0;--border-hover:#80c241;--shadow-sm:0 2px 8px #2c3e3014;--shadow-md:0 4px 16px #2c3e301f;--shadow-lg:0 8px 32px #2c3e3029;--shadow-glow:0 0 20px #80c24140;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--transition:.3s cubic-bezier(.4,0,.2,1)}*{box-sizing:border-box;margin:0;padding:0}html,body{max-width:100vw;overflow-x:hidden}body{color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Noto Sans JP,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.header{z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);background:#ffffffd9;padding:0 24px;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;max-width:800px;height:64px;margin:0 auto;display:flex}.header-logo{color:var(--text-primary);transition:var(--transition);align-items:center;gap:12px;font-size:1.1rem;font-weight:700;display:flex}.header-logo:hover{color:var(--yamanote-green)}.header-logo-icon{background:linear-gradient(135deg,var(--yamanote-green),var(--yamanote-green-dark));width:36px;height:36px;box-shadow:0 0 12px var(--yamanote-green-glow);border-radius:50%;justify-content:center;align-items:center;font-size:1rem;display:flex}.header-stats{color:var(--text-secondary);gap:16px;font-size:.8rem;display:flex}.header-stat{align-items:center;gap:4px;display:flex}.header-stat-value{color:var(--yamanote-green);font-weight:600}.main-container{max-width:800px;margin:0 auto;padding:24px 16px 80px}.hero{text-align:center;padding:48px 16px 40px;position:relative}.hero:before{content:"";background:radial-gradient(circle,var(--yamanote-green-glow),transparent 70%);pointer-events:none;opacity:.5;border-radius:50%;width:400px;height:400px;position:absolute;top:-40px;left:50%;transform:translate(-50%)}.hero-title{letter-spacing:-.02em;background:linear-gradient(135deg,var(--text-primary),var(--yamanote-green));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:2rem;font-weight:900}.hero-subtitle{color:var(--text-secondary);font-size:.95rem;font-weight:400}.stats-bar{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:32px;display:grid}.stat-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);text-align:center;padding:16px}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px;font-size:.75rem}.stat-value{color:var(--yamanote-green);font-size:1.5rem;font-weight:700}.stat-unit{color:var(--text-secondary);font-size:.8rem;font-weight:400}.station-list{flex-direction:column;display:flex;position:relative}.station-list:before{content:"";background:linear-gradient(to bottom,var(--yamanote-green),var(--yamanote-green-dark),var(--yamanote-green));opacity:.4;border-radius:2px;width:3px;position:absolute;top:0;bottom:0;left:23px}.station-item{flex-direction:column;display:flex}.station-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);z-index:2;align-items:center;gap:16px;padding:14px 16px;display:flex;position:relative}.station-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);box-shadow:var(--shadow-glow);transform:translate(4px)}.station-number{background:linear-gradient(135deg,var(--yamanote-green),var(--yamanote-green-dark));color:#fff;width:48px;height:48px;box-shadow:0 0 12px var(--yamanote-green-glow);z-index:3;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:flex;position:relative}.station-info{flex:1;min-width:0}.station-name{color:var(--text-primary);margin-bottom:2px;font-size:1.05rem;font-weight:600}.station-cumulative{color:var(--text-muted);font-size:.78rem}.station-arrow{color:var(--text-muted);transition:var(--transition);font-size:1.2rem}.station-card:hover .station-arrow{color:var(--yamanote-green);transform:translate(4px)}.segment-info{z-index:1;align-items:center;gap:12px;padding:8px 0 8px 36px;display:flex;position:relative}.segment-dot{background:var(--yamanote-green);opacity:.5;border-radius:50%;flex-shrink:0;width:8px;height:8px;margin-left:-2.5px}.segment-details{color:var(--text-muted);gap:12px;font-size:.8rem;display:flex}.segment-time,.segment-distance{align-items:center;gap:4px;display:flex}.segment-icon{font-size:.85rem}.detail-container{max-width:800px;margin:0 auto;padding:24px 16px 80px}.back-link{color:var(--text-secondary);transition:var(--transition);align-items:center;gap:8px;margin-bottom:16px;padding:8px 0;font-size:.9rem;display:inline-flex}.back-link:hover{color:var(--yamanote-green)}.detail-header{text-align:center;margin-bottom:24px}.detail-station-number{background:linear-gradient(135deg,var(--yamanote-green),var(--yamanote-green-dark));color:#fff;width:72px;height:72px;box-shadow:0 0 24px var(--yamanote-green-glow);border-radius:50%;justify-content:center;align-items:center;margin:0 auto 16px;font-size:1.4rem;font-weight:700;display:flex}.detail-station-name{background:linear-gradient(135deg,var(--text-primary),var(--yamanote-green));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:4px;font-size:1.8rem;font-weight:900}.detail-station-sub{color:var(--text-muted);font-size:.9rem}.route-info-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-bottom:24px;padding:24px}.route-info-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px;font-size:.85rem}.route-info-stations{justify-content:center;align-items:center;gap:16px;margin-bottom:20px;display:flex}.route-station-badge{background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:12px 20px;font-size:1rem;font-weight:600}.route-arrow{color:var(--yamanote-green);font-size:1.5rem}.route-stats{grid-template-columns:1fr 1fr;gap:12px;display:grid}.route-stat{background:var(--bg-elevated);border-radius:var(--radius-sm);text-align:center;padding:12px}.route-stat-label{color:var(--text-muted);margin-bottom:4px;font-size:.75rem}.route-stat-value{color:var(--yamanote-green);font-size:1.3rem;font-weight:700}.map-container{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-bottom:24px;overflow:hidden}.map-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.map-title{font-size:.95rem;font-weight:600}.map-open-link{color:var(--yamanote-green);transition:var(--transition);align-items:center;gap:4px;font-size:.8rem;display:flex}.map-open-link:hover{color:var(--yamanote-green-light)}.map-iframe-wrapper{width:100%;height:450px;position:relative}.map-iframe-wrapper iframe{border:none;width:100%;height:100%}.detail-nav{grid-template-columns:1fr 1fr;gap:12px;display:grid}.detail-nav-link{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:var(--transition);flex-direction:column;gap:4px;padding:16px;display:flex}.detail-nav-link:hover{background:var(--bg-card-hover);border-color:var(--border-hover);box-shadow:var(--shadow-glow)}.detail-nav-link.next{text-align:right}.detail-nav-label{color:var(--text-muted);font-size:.75rem}.detail-nav-station{color:var(--text-primary);font-weight:600}.footer{border-top:1px solid var(--border-color);text-align:center;color:var(--text-muted);padding:24px;font-size:.8rem}@media (max-width:600px){.hero-title{font-size:1.5rem}.stats-bar{grid-template-columns:repeat(3,1fr);gap:8px}.stat-card{padding:12px 8px}.stat-value{font-size:1.2rem}.station-card{gap:12px;padding:12px}.station-number{width:40px;height:40px;font-size:.75rem}.route-info-stations{flex-direction:column;gap:8px}.route-arrow{transform:rotate(90deg)}.map-iframe-wrapper{height:350px}.header-stats{display:none}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.station-item{animation:.4s ease-out both fadeInUp}.station-item:first-child{animation-delay:20ms}.station-item:nth-child(2){animation-delay:40ms}.station-item:nth-child(3){animation-delay:60ms}.station-item:nth-child(4){animation-delay:80ms}.station-item:nth-child(5){animation-delay:.1s}.station-item:nth-child(6){animation-delay:.12s}.station-item:nth-child(7){animation-delay:.14s}.station-item:nth-child(8){animation-delay:.16s}.station-item:nth-child(9){animation-delay:.18s}.station-item:nth-child(10){animation-delay:.2s}.station-item:nth-child(11){animation-delay:.22s}.station-item:nth-child(12){animation-delay:.24s}.station-item:nth-child(13){animation-delay:.26s}.station-item:nth-child(14){animation-delay:.28s}.station-item:nth-child(15){animation-delay:.3s}.station-item:nth-child(16){animation-delay:.32s}.station-item:nth-child(17){animation-delay:.34s}.station-item:nth-child(18){animation-delay:.36s}.station-item:nth-child(19){animation-delay:.38s}.station-item:nth-child(20){animation-delay:.4s}.station-item:nth-child(21){animation-delay:.42s}.station-item:nth-child(22){animation-delay:.44s}.station-item:nth-child(23){animation-delay:.46s}.station-item:nth-child(24){animation-delay:.48s}.station-item:nth-child(25){animation-delay:.5s}.station-item:nth-child(26){animation-delay:.52s}.station-item:nth-child(27){animation-delay:.54s}.station-item:nth-child(28){animation-delay:.56s}.station-item:nth-child(29){animation-delay:.58s}.station-item:nth-child(30){animation-delay:.6s}