@import"https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@300;400;500;600;700&family=Merriweather:wght@300;400;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap";.nav-header[data-astro-cid-pux6a34n]{position:fixed;top:0;left:0;right:0;z-index:1000;background:#263238f2;backdrop-filter:blur(8px);border-bottom:2px solid var(--cable-steel)}.nav-inner[data-astro-cid-pux6a34n]{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:72px}.nav-logo[data-astro-cid-pux6a34n]{display:flex;align-items:center;gap:.5rem;text-decoration:none}.nav-logo-tower[data-astro-cid-pux6a34n]{display:block;width:3px;height:28px;background:var(--bridge-red);position:relative}.nav-logo-tower[data-astro-cid-pux6a34n]:before{content:"";position:absolute;top:-4px;left:-3px;width:9px;height:4px;background:var(--bridge-red)}.nav-logo-text[data-astro-cid-pux6a34n]{font-family:var(--font-heading);font-size:1.5rem;font-weight:700;color:var(--fog-white);letter-spacing:.08em;text-transform:uppercase}.nav-list[data-astro-cid-pux6a34n]{display:flex;align-items:center;gap:.25rem}.nav-link[data-astro-cid-pux6a34n]{display:block;padding:.5rem 1rem;color:#eceff1b3;font-family:var(--font-heading);font-size:.85rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;transition:color .3s ease;position:relative}.nav-link[data-astro-cid-pux6a34n]:after{content:"";position:absolute;bottom:0;left:50%;transform:translate(-50%) scaleX(0);width:60%;height:2px;background:var(--bridge-red);transition:transform .3s ease}.nav-link[data-astro-cid-pux6a34n]:hover{color:var(--fog-white)}.nav-link[data-astro-cid-pux6a34n]:hover:after{transform:translate(-50%) scaleX(1)}.nav-cable-bottom[data-astro-cid-pux6a34n]{height:1px;background:repeating-linear-gradient(90deg,var(--cable-steel) 0,var(--cable-steel) 8px,transparent 8px,transparent 16px)}.nav-toggle[data-astro-cid-pux6a34n]{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}.nav-toggle-line[data-astro-cid-pux6a34n]{display:block;width:24px;height:2px;background:var(--fog-white);transition:all .3s ease}.nav-toggle[data-astro-cid-pux6a34n].is-open .nav-toggle-line[data-astro-cid-pux6a34n]:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.nav-toggle[data-astro-cid-pux6a34n].is-open .nav-toggle-line[data-astro-cid-pux6a34n]:nth-child(2){opacity:0}.nav-toggle[data-astro-cid-pux6a34n].is-open .nav-toggle-line[data-astro-cid-pux6a34n]:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}@media (max-width: 768px){.nav-toggle[data-astro-cid-pux6a34n]{display:flex}.nav-menu[data-astro-cid-pux6a34n]{position:absolute;top:72px;left:0;right:0;background:#263238fa;padding:1rem 2rem;transform:translateY(-10px);opacity:0;pointer-events:none;transition:all .3s ease}.nav-menu[data-astro-cid-pux6a34n].is-open{transform:translateY(0);opacity:1;pointer-events:all}.nav-list[data-astro-cid-pux6a34n]{flex-direction:column;gap:0}.nav-link[data-astro-cid-pux6a34n]{padding:.75rem 0;width:100%;border-bottom:1px solid rgba(96,125,139,.2)}}.footer[data-astro-cid-sz7xmlte]{background:var(--tower-dark);color:#eceff1b3;position:relative;overflow:hidden}.footer-cables[data-astro-cid-sz7xmlte]{position:relative;height:60px;overflow:hidden}.footer-cable-main[data-astro-cid-sz7xmlte]{position:absolute;top:0;left:5%;right:5%;height:60px;border-bottom:2px solid var(--bridge-red);border-radius:0 0 50% 50%}.footer-cable-verticals[data-astro-cid-sz7xmlte]{position:absolute;inset:0}.footer-vline[data-astro-cid-sz7xmlte]{position:absolute;top:0;width:1px;height:100%;background:#607d8b4d}.footer-inner[data-astro-cid-sz7xmlte]{max-width:1200px;margin:0 auto;padding:3rem 2rem 2rem}.footer-grid[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:2fr 1fr 1fr;gap:3rem;margin-bottom:3rem}.footer-logo[data-astro-cid-sz7xmlte]{display:flex;align-items:center;gap:.5rem;margin-bottom:1rem}.footer-tower-icon[data-astro-cid-sz7xmlte]{display:block;width:3px;height:24px;background:var(--bridge-red)}.footer-logo-text[data-astro-cid-sz7xmlte]{font-family:var(--font-heading);font-size:1.4rem;font-weight:700;color:var(--fog-white);letter-spacing:.08em;text-transform:uppercase}.footer-company[data-astro-cid-sz7xmlte]{font-size:.9rem;margin-bottom:.3rem;color:#eceff199}.footer-address[data-astro-cid-sz7xmlte]{font-size:.8rem;color:#eceff166}.footer-heading[data-astro-cid-sz7xmlte]{font-family:var(--font-heading);font-size:.85rem;font-weight:600;color:var(--fog-white);text-transform:uppercase;letter-spacing:.1em;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid rgba(96,125,139,.3)}.footer-list[data-astro-cid-sz7xmlte]{list-style:none}.footer-list[data-astro-cid-sz7xmlte] li[data-astro-cid-sz7xmlte]{font-size:.85rem;margin-bottom:.5rem;color:#eceff180}.footer-link[data-astro-cid-sz7xmlte]{color:#eceff180;text-decoration:none;font-family:var(--font-heading);letter-spacing:.05em;transition:color .3s ease}.footer-link[data-astro-cid-sz7xmlte]:hover{color:var(--sunset-gold)}.footer-bottom[data-astro-cid-sz7xmlte]{text-align:center;padding-top:2rem}.footer-cable-line[data-astro-cid-sz7xmlte]{height:1px;background:repeating-linear-gradient(90deg,rgba(96,125,139,.3) 0,rgba(96,125,139,.3) 12px,transparent 12px,transparent 20px);margin-bottom:1.5rem}.footer-copy[data-astro-cid-sz7xmlte]{font-family:var(--font-heading);font-size:.75rem;color:#eceff14d;letter-spacing:.1em}@media (max-width: 768px){.footer-grid[data-astro-cid-sz7xmlte]{grid-template-columns:1fr;gap:2rem}}:root{--cable-steel: #607d8b;--bridge-red: #c62828;--river-blue: #0277bd;--fog-white: #eceff1;--tower-dark: #263238;--sunset-gold: #ff8f00;--font-heading: "Barlow Condensed", "Noto Sans JP", sans-serif;--font-body: "Noto Sans JP", "Merriweather", serif;--font-accent: "Merriweather", serif;--cable-width: 1px;--cable-color: rgba(96, 125, 139, .3);--cable-color-strong: rgba(96, 125, 139, .6)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-body);color:var(--tower-dark);background-color:var(--fog-white);line-height:1.8;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}ul,ol{list-style:none}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:600;line-height:1.3;letter-spacing:.04em}h1{font-size:clamp(2.4rem,5vw,4rem)}h2{font-size:clamp(1.8rem,3.5vw,2.8rem)}h3{font-size:clamp(1.3rem,2.5vw,1.8rem)}.cable-grid-bg{position:relative}.cable-grid-bg:before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,var(--cable-color) 0,var(--cable-color) var(--cable-width),transparent var(--cable-width),transparent 80px),repeating-linear-gradient(0deg,var(--cable-color) 0,var(--cable-color) var(--cable-width),transparent var(--cable-width),transparent 80px);pointer-events:none;z-index:0}.cable-lines{position:relative}.cable-lines:after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(45deg,transparent,transparent 60px,var(--cable-color) 60px,var(--cable-color) 61px),repeating-linear-gradient(-45deg,transparent,transparent 60px,var(--cable-color) 60px,var(--cable-color) 61px);pointer-events:none;z-index:0}.tower-frame{position:relative;border-left:4px solid var(--tower-dark);border-right:4px solid var(--tower-dark)}.tower-frame:before,.tower-frame:after{content:"";position:absolute;top:0;width:4px;height:100%;background:var(--tower-dark)}.tower-frame:before{left:20px}.tower-frame:after{right:20px}.suspension-cable{position:relative;overflow:hidden}.suspension-cable:before{content:"";position:absolute;top:0;left:0;right:0;height:200px;border-bottom:2px solid var(--cable-steel);border-radius:0 0 50% 50%;pointer-events:none;z-index:1}.container{max-width:1200px;margin:0 auto;padding:0 2rem;position:relative;z-index:1}.container-narrow{max-width:800px;margin:0 auto;padding:0 2rem;position:relative;z-index:1}.section{padding:6rem 0;position:relative}.section-title{text-align:center;margin-bottom:1rem;color:var(--tower-dark);text-transform:uppercase;letter-spacing:.1em;position:relative;z-index:1}.section-title-en{display:block;font-size:.85rem;color:var(--cable-steel);font-family:var(--font-accent);letter-spacing:.15em;margin-bottom:.5rem;font-weight:400}.section-subtitle{text-align:center;color:var(--cable-steel);font-size:1rem;margin-bottom:3rem;position:relative;z-index:1}.cable-divider{width:80px;height:2px;background:var(--bridge-red);margin:1.5rem auto 2rem;position:relative}.cable-divider:before,.cable-divider:after{content:"";position:absolute;top:-3px;width:8px;height:8px;border-radius:50%;background:var(--bridge-red)}.cable-divider:before{left:-4px}.cable-divider:after{right:-4px}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 2.2rem;font-family:var(--font-heading);font-size:.95rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;border:2px solid transparent;cursor:pointer;transition:all .3s ease;position:relative;z-index:1}.btn-primary{background:var(--bridge-red);color:#fff;border-color:var(--bridge-red)}.btn-primary:hover{background:transparent;color:var(--bridge-red)}.btn-outline{background:transparent;color:var(--tower-dark);border-color:var(--tower-dark)}.btn-outline:hover{background:var(--tower-dark);color:var(--fog-white)}.btn-ghost{background:transparent;color:var(--fog-white);border-color:var(--fog-white)}.btn-ghost:hover{background:var(--fog-white);color:var(--tower-dark)}.card{background:#fff;border:1px solid var(--cable-color);padding:2rem;transition:all .4s ease;position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;width:4px;height:0;background:var(--bridge-red);transition:height .4s ease}.card:hover{transform:translateY(-4px);box-shadow:0 12px 40px #2632381f;border-color:var(--cable-steel)}.card:hover:before{height:100%}.card-title{font-size:1.3rem;margin-bottom:.75rem;color:var(--tower-dark)}.card-text{color:var(--cable-steel);font-size:.9rem;line-height:1.7}.card-meta{font-size:.8rem;color:var(--cable-steel);font-family:var(--font-heading);letter-spacing:.05em;margin-bottom:.5rem}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}@keyframes sway{0%,to{transform:rotate(-.5deg)}50%{transform:rotate(.5deg)}}@keyframes cableSway{0%,to{transform:translate(-2px)}50%{transform:translate(2px)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.sway-on-scroll{animation:sway 4s ease-in-out infinite;transform-origin:top center}.page-header{background:var(--tower-dark);color:var(--fog-white);padding:8rem 0 4rem;position:relative;overflow:hidden;text-align:center}.page-header:before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,rgba(96,125,139,.15) 0,rgba(96,125,139,.15) 1px,transparent 1px,transparent 60px);pointer-events:none}.page-header:after{content:"";position:absolute;bottom:0;left:0;right:0;height:80px;border-top:3px solid var(--bridge-red);border-radius:50% 50% 0 0;pointer-events:none}.page-header h1{position:relative;z-index:1}.page-header .section-title-en{color:#eceff180}.bridge-deck{position:relative;border-top:3px solid var(--cable-steel);border-bottom:3px solid var(--cable-steel)}.bridge-deck:before{content:"";position:absolute;top:-30px;left:50%;transform:translate(-50%);width:80%;height:30px;border-bottom:2px solid var(--cable-color-strong);border-radius:0 0 50% 50%}.vertical-cables{position:relative}.vertical-cables:before{content:"";position:absolute;top:0;left:10%;width:1px;height:100%;background:repeating-linear-gradient(to bottom,var(--cable-color) 0,var(--cable-color) 20px,transparent 20px,transparent 30px)}.vertical-cables:after{content:"";position:absolute;top:0;right:10%;width:1px;height:100%;background:repeating-linear-gradient(to bottom,var(--cable-color) 0,var(--cable-color) 20px,transparent 20px,transparent 30px)}.detail-content{background:#fff;padding:3rem;border:1px solid var(--cable-color);position:relative}.detail-content h2{color:var(--tower-dark);margin:2rem 0 1rem;padding-bottom:.5rem;border-bottom:2px solid var(--bridge-red)}.detail-content ul{padding-left:1.5rem}.detail-content li{position:relative;padding-left:1rem;margin-bottom:.5rem;color:var(--cable-steel)}.detail-content li:before{content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;background:var(--bridge-red);border-radius:50%}@media (max-width: 1024px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.section{padding:4rem 0}.page-header{padding:6rem 0 3rem}.tower-frame:before{left:8px}.tower-frame:after{right:8px}.detail-content{padding:1.5rem}}.form-group{margin-bottom:1.5rem}.form-group label{display:block;font-family:var(--font-heading);font-weight:500;margin-bottom:.5rem;color:var(--tower-dark);letter-spacing:.03em}.form-group input,.form-group textarea,.form-group select{width:100%;padding:.8rem 1rem;border:1px solid var(--cable-color-strong);background:#fff;font-family:var(--font-body);font-size:.95rem;color:var(--tower-dark);transition:border-color .3s ease}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--river-blue);box-shadow:0 0 0 3px #0277bd1a}.form-group textarea{min-height:160px;resize:vertical}.tag{display:inline-block;padding:.25rem .75rem;background:#607d8b1a;color:var(--cable-steel);font-size:.8rem;font-family:var(--font-heading);letter-spacing:.05em;border:1px solid var(--cable-color)}.tag-red{background:#c6282814;color:var(--bridge-red);border-color:#c6282833}.back-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--cable-steel);font-family:var(--font-heading);font-size:.9rem;letter-spacing:.05em;margin-bottom:2rem;transition:color .3s ease}.back-link:hover{color:var(--bridge-red)}.back-link:before{content:"←"}