:root{--bg:#f5f7fb;--surface:#fff;--ink:#101828;--muted:#667085;--line:#e4e7ec;--brand:#0b5fff;--brand2:#00a6a6;--nav:#0c1628;--soft:#eef4ff;--radius:18px;--shadow:0 18px 48px rgba(15,23,42,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic",Meiryo,sans-serif;line-height:1.75}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(12,22,40,.96);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px}.brand{display:inline-flex;align-items:center;gap:12px;color:#fff;font-weight:800;letter-spacing:.02em;padding:7px 14px 7px 8px;border-radius:999px;background:linear-gradient(90deg,rgba(251,253,255,.98) 0%,rgba(236,242,250,.96) 24%,rgba(108,123,150,.95) 62%,rgba(22,31,49,.98) 100%);border:1px solid rgba(255,255,255,.14);box-shadow:0 10px 28px rgba(0,0,0,.22)}.brand:hover{text-decoration:none}.brand-icon{display:block;width:42px;height:42px;object-fit:cover;border-radius:50%;background:rgba(255,255,255,.78);padding:1px;box-shadow:0 4px 14px rgba(0,0,0,.28)}.nav-links{display:flex;gap:24px;align-items:center}.nav-links a{color:#d9e2f2;font-size:.95rem;white-space:nowrap;flex:0 0 auto}.nav-links a:hover{color:#fff;text-decoration:none}.hero{background:radial-gradient(circle at 80% 20%,rgba(0,166,166,.18),transparent 35%),radial-gradient(circle at 15% 15%,rgba(11,95,255,.25),transparent 38%),linear-gradient(135deg,#08111f,#101f39);color:#fff;padding:96px 0 82px}.eyebrow{font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;color:#8cb4ff;font-weight:700}.hero h1{font-size:clamp(2.4rem,6vw,5rem);line-height:1.05;margin:.28em 0 .28em;letter-spacing:-.04em}.hero p{font-size:clamp(1rem,2vw,1.25rem);max-width:760px;color:#d8e1ef;margin:0 0 32px}.cta-row{display:flex;flex-wrap:wrap;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:12px;font-weight:700;border:1px solid transparent;text-decoration:none!important}.btn-primary{background:#fff;color:#0c1628}.btn-outline{border-color:rgba(255,255,255,.32);color:#fff;background:rgba(255,255,255,.05)}.section{padding:72px 0}.section h2{font-size:clamp(1.8rem,3.5vw,2.7rem);letter-spacing:-.03em;margin:0 0 12px}.lead{color:var(--muted);max-width:760px;margin:0 0 34px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}.card h3{margin:0 0 10px;font-size:1.25rem}.card p{color:var(--muted);margin:.3em 0}.kicker{display:inline-block;padding:5px 10px;border-radius:999px;background:var(--soft);color:var(--brand);font-size:.78rem;font-weight:800;letter-spacing:.06em}.band{background:#0c1628;color:#fff}.band .lead{color:#c8d3e3}.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{counter-increment:step;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:24px}.step:before{content:"0" counter(step);display:block;color:#8cb4ff;font-weight:900;font-size:.85rem;letter-spacing:.12em;margin-bottom:8px}.page-head{padding:72px 0 42px;background:linear-gradient(135deg,#0c1628,#132c52);color:#fff}.page-head h1{font-size:clamp(2.1rem,5vw,3.8rem);margin:.15em 0;letter-spacing:-.04em}.page-head p{color:#d8e1ef;max-width:760px}dl.info{display:grid;grid-template-columns:180px 1fr;margin:0}.info dt,.info dd{padding:16px 0;border-bottom:1px solid var(--line);margin:0}.info dt{color:var(--muted);font-weight:700}.mailbox{display:flex;flex-direction:column;gap:10px;border-left:4px solid var(--brand);padding:20px 22px;background:#fff;border-radius:0 14px 14px 0;box-shadow:var(--shadow)}.mailbox strong{font-size:1.1rem}.notice{background:#fff8e8;border:1px solid #f5dca0;border-radius:14px;padding:18px 20px;color:#6f5215}.site-footer{background:#08111f;color:#aebbd0;padding:44px 0}.footer-row{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}.footer-nav{display:flex;gap:18px;flex-wrap:wrap}.footer-nav a{color:#d8e1ef}.small{font-size:.88rem;color:var(--muted)}.site-footer .small{color:#8290a6}.brand{max-width:100%}.brand-text{white-space:nowrap}
@media(max-width:820px){.nav{align-items:flex-start;padding:16px 0;flex-direction:column}.nav-links{width:100%;overflow-x:auto;padding-bottom:4px}.hero{padding:72px 0 60px}.grid,.grid-3,.steps{grid-template-columns:1fr}dl.info{grid-template-columns:1fr}.info dt{padding-bottom:0;border-bottom:0}.info dd{padding-top:4px}.footer-row{flex-direction:column}}

.brand-icon{width:38px;height:38px;display:block;border-radius:50%;object-fit:cover;box-shadow:0 4px 14px rgba(0,0,0,.25)}
.footer-brand .brand-icon{width:34px;height:34px}
.brand-text{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;background:linear-gradient(90deg,rgba(255,255,255,.10),rgba(0,0,0,.12));color:#ffffff;font-weight:800;letter-spacing:.02em;text-shadow:0 1px 2px rgba(0,0,0,.35)}

.site-footer .brand{background:linear-gradient(90deg,rgba(250,252,255,.97) 0%,rgba(231,237,247,.95) 26%,rgba(88,101,126,.92) 62%,rgba(12,17,31,.98) 100%)}


/* 2026-09-30 header refinement: brighter at logo side, darker toward navigation */
.site-header{
  background:linear-gradient(90deg,#eef3f7 0%,#d8e1ea 18%,#7890a8 42%,#31516f 62%,#142d48 78%,#08111f 100%);
  border-bottom:1px solid rgba(8,17,31,.16);
  box-shadow:0 8px 24px rgba(8,17,31,.12);
}
.site-header .brand{
  padding:0;
  border:0;
  border-radius:0;
  background:none;
  box-shadow:none;
  gap:10px;
}
.site-header .brand-icon{
  width:48px;
  height:48px;
  object-fit:contain;
  object-position:center;
  border-radius:0;
  background:transparent;
  padding:0;
  box-shadow:none;
  filter:drop-shadow(0 2px 4px rgba(0,0,0,.20));
}
.site-header .brand-text{
  min-height:auto;
  padding:0;
  border-radius:0;
  background:none;
  color:#101828;
  font-size:1.08rem;
  text-shadow:none;
}
.site-header .nav-links a{
  color:#eef4fb;
  font-weight:650;
  text-shadow:0 1px 2px rgba(0,0,0,.18);
}
.site-header .nav-links a:hover{color:#ffffff}
.site-footer .brand{
  padding:0;
  border:0;
  background:none;
  box-shadow:none;
}
.site-footer .brand-icon{
  width:40px;
  height:40px;
  object-fit:contain;
  border-radius:0;
  background:transparent;
  box-shadow:none;
}
.site-footer .brand-text{
  min-height:auto;
  padding:0;
  background:none;
  color:#ffffff;
  text-shadow:none;
}
.credentials{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:24px}
.credential-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow)}
.credential-box h3{margin:0 0 12px;font-size:1.08rem}
.credential-box ul{margin:0;padding-left:1.2em}
.credential-box li{margin:.45em 0;color:#344054}
@media(max-width:820px){
  .site-header{background:linear-gradient(180deg,#e8eef4 0%,#6f879f 46%,#17324f 72%,#08111f 100%)}
  .site-header .nav-links a{color:#fff}
  .credentials{grid-template-columns:1fr}
}

.legal-display{margin-top:26px;background:linear-gradient(135deg,#f8fafc,#eef3f8);border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;box-shadow:0 14px 36px rgba(15,23,42,.06)}
.legal-display-head h2{margin:8px 0 4px;font-size:1.45rem;letter-spacing:-.02em}
.legal-display-head p{margin:0 0 18px;color:var(--muted)}
.legal-info{display:grid;grid-template-columns:170px 1fr;margin:0;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.legal-info dt,.legal-info dd{margin:0;padding:13px 16px;border-bottom:1px solid var(--line)}
.legal-info dt{font-weight:700;color:#475467;background:#f8fafc}
.legal-info dt:nth-last-of-type(1),.legal-info dd:last-of-type{border-bottom:0}
.legal-footer-link{font-weight:700;color:#f0d7d7!important}
.legal-footer-link:hover{color:#fff!important}
@media(max-width:820px){.legal-info{grid-template-columns:1fr}.legal-info dt{padding-bottom:4px;border-bottom:0}.legal-info dd{padding-top:4px}.legal-display{padding:22px 20px}}

.pc-watermark{position:relative;overflow:hidden;background:linear-gradient(180deg,#f7f9fc 0%,#eef3f9 100%)}
.pc-watermark .wrap{position:relative;z-index:1}
.pc-watermark:after{content:"";position:absolute;right:-18px;bottom:-6px;width:min(560px,48vw);height:min(560px,48vw);background:url("thinkpad-watermark-soft.png") no-repeat center/contain;opacity:.14;pointer-events:none;filter:grayscale(100%) brightness(1.16) contrast(.92);z-index:0}
.pc-watermark .card{background:rgba(255,255,255,.92);backdrop-filter:blur(1px)}
@media(max-width:820px){.pc-watermark:after{width:74vw;height:74vw;right:-34px;bottom:6px;opacity:.11}}

.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.data-protection-note{margin-top:24px;padding:20px 22px;border:1px solid #d7e2f0;border-radius:16px;background:linear-gradient(90deg,rgba(255,255,255,.96),rgba(236,243,251,.96));box-shadow:0 12px 32px rgba(15,23,42,.06);display:flex;gap:10px;flex-direction:column}
.data-protection-note strong{font-size:1.02rem;color:#172033}
.data-protection-note span{color:#526174}
@media(max-width:1050px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:820px){.grid-4{grid-template-columns:1fr}.data-protection-note{padding:18px}}

/* Mobile navigation refinement */
@media(max-width:820px){
  .nav{gap:10px}
  .nav-links{
    display:flex;
    flex-wrap:nowrap;
    gap:16px;
    width:100%;
    overflow-x:auto;
    overflow-y:hidden;
    padding:2px 2px 8px;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
  }
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links a{
    white-space:nowrap;
    flex:0 0 auto;
    font-size:.90rem;
    line-height:1.2;
  }
}