:root{--color-blue:#0f5fa8;--color-blue-dark:#0b4f8d;--color-navy:#0f172a;--color-text:#1f2937;--color-muted:#64748b;--color-line:#e2e8f0;--color-bg:#f8fafc;--color-white:#fff;--color-green:#10b981;--color-purple:#8b5cf6;--shadow:0 16px 42px rgba(15,23,42,.08);--radius:8px;--container:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Yu Gothic",YuGothic,Meiryo,sans-serif;line-height:1.8;background:var(--color-white)}img{display:block;max-width:100%;height:auto}a{color:var(--color-blue);text-decoration:none}a:hover{text-decoration:underline}.container{width:min(100% - 40px,var(--container));margin-inline:auto}.narrow{max-width:920px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--color-line);backdrop-filter:saturate(180%) blur(12px)}.site-header__inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;padding:12px 0}.site-logo{display:inline-flex;align-items:center;gap:10px;margin-right:auto;color:var(--color-navy);font-weight:700}.site-logo__img{display:block;height:48px;width:auto}.btn-nyuko{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;padding:8px 18px;border-radius:6px;background:var(--color-navy);color:var(--color-white);font-weight:800;font-size:14px;line-height:1.2;text-align:center}.btn-nyuko:hover{background:var(--color-blue-dark);color:var(--color-white);text-decoration:none}.btn-nyuko__note{margin-top:2px;font-size:10px;font-weight:500;opacity:.9}.site-logo:hover{text-decoration:none}.site-logo__mark{display:grid;place-items:center;width:34px;height:34px;border-radius:var(--radius);background:linear-gradient(135deg,var(--color-blue),#38bdf8);color:var(--color-white)}.site-nav{display:flex;flex-basis:100%;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:8px 18px;font-size:14px}.site-nav a{display:inline-flex;flex-direction:column;line-height:1.25;color:var(--color-navy);font-weight:700}.site-nav a[aria-current="page"]{color:var(--color-blue)}.site-nav__sub{font-size:11px;font-weight:500;color:var(--color-muted)}.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0;border:0;background:transparent;cursor:pointer}.nav-toggle__bar{display:block;width:24px;height:2px;margin:0 auto;background:var(--color-navy);border-radius:2px}.site-main{overflow:hidden}.section{padding:72px 0}.section-muted{background:linear-gradient(135deg,#f8fafc 0%,#eef2f7 100%)}.section-heading{max-width:760px;margin:0 auto 40px;text-align:center}.eyebrow{margin:0 0 12px;color:var(--color-blue);font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.section-title{margin:0;color:var(--color-navy);font-size:clamp(26px,3vw,36px);line-height:1.45}#navicard-support .section-title,#navibook-support .section-title{font-size:clamp(20px,2.4vw,26px)}.section-lead{margin:12px 0 0;color:var(--color-muted);font-size:16px}.page-hero{padding:72px 0;background:linear-gradient(135deg,#eff6ff 0%,#f8fafc 100%)}.page-hero-simple{text-align:center}.page-hero.page-hero-simple h1{font-size:clamp(26px,4vw,40px)}.page-hero h1{margin:0 0 16px;color:var(--color-navy);font-size:clamp(32px,5vw,52px);line-height:1.25}.page-hero p{max-width:720px;margin:0 0 24px;color:#334155;font-size:clamp(16px,2vw,19px)}.page-hero-simple p{margin-inline:auto}.page-hero__grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:42px;align-items:center}.page-hero__grid img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);aspect-ratio: 4 / 3;object-fit:cover}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 22px;border-radius:var(--radius);color:var(--color-white);font-weight:800;line-height:1.4;text-align:center;text-decoration:none;transition:transform .2s ease , background-color .2s ease}.btn:hover{transform:translateY(-2px);text-decoration:none}.btn-primary{background:var(--color-blue)}.btn-primary:hover{background:var(--color-blue-dark)}.btn-secondary{background:var(--color-navy)}.btn-line{background:#06c755}.button-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}.button-row-left{justify-content:flex-start}.cta{padding:64px 0;background:linear-gradient(135deg,var(--color-navy),#1e3a8a);color:var(--color-white)}.cta__inner{max-width:860px;text-align:center}.cta h2{margin:0 0 12px;font-size:clamp(26px,3vw,38px)}.cta p{margin:0 0 24px;color:#dbeafe}.site-footer{background:var(--color-navy);color:#cbd5e1;padding:38px 0}.site-footer__inner{display:grid;gap:20px;width:min(100% - 40px,var(--container));margin-inline:auto}.page-hero>.eyebrow,.page-hero>h1,.page-hero>p{width:min(100% - 40px,var(--container));margin-inline:auto}.content-wrap{width:min(100% - 40px,var(--container));margin-inline:auto;padding:8px 0 48px}.common-cta{padding:56px 0;background:linear-gradient(135deg,#f8fafc 0%,#eef2f7 100%);border-top:1px solid var(--color-line)}.common-cta__inner{width:min(100% - 40px,720px);margin-inline:auto;text-align:center}.common-cta__inner h2{margin:0 0 12px;color:var(--color-navy);font-size:clamp(22px,3vw,30px)}.common-cta__inner p{margin:0 0 24px;color:#475569}.site-footer p{margin:6px 0 0}.footer-links{display:flex;flex-wrap:wrap;gap:10px 18px}.footer-links a{color:#e2e8f0}.copyright{margin:0;color:#94a3b8;font-size:13px}.footer-trademark{margin:0 0 4px;color:#94a3b8;font-size:12px;line-height:1.7}.site-footer__inner>.footer-trademark,.site-footer__inner>.footer-trademark+.copyright{line-height:1.5}.site-footer__inner>.footer-trademark+.copyright{margin-top:-20px}@media (max-width:900px){.nav-toggle{display:flex;width:40px;height:40px}.site-logo__img{height:32px}.btn-nyuko{padding:6px 10px;font-size:11px}.btn-nyuko__note{display:none}.site-header__inner{position:relative;gap:8px 10px}.site-nav{display:none;position:absolute;top:100%;left:0;right:0;z-index:20;flex-direction:column;align-items:stretch;gap:0;padding:6px 0;background:var(--color-white);border-top:1px solid var(--color-line);box-shadow:var(--shadow)}.site-nav.is-open{display:flex}.site-nav a{flex-direction:row;align-items:baseline;gap:8px;padding:13px 20px;border-bottom:1px solid var(--color-line)}.site-nav a:last-child{border-bottom:0}.site-nav__sub{font-size:12px}}@media (max-width:860px){.container{width:min(100% - 32px,var(--container))}.section,.page-hero{padding:52px 0}.page-hero__grid{grid-template-columns:1fr}.button-row,.button-row-left{justify-content:stretch}.button-row .btn{width:100%}}