:root{
  --ink:#141b22;--paper:#f7f9fb;--card:#fff;--line:#e3e9ef;
  --ink2:#14213d;--blue:#1e6fd9;--red:#e22e3d;--dark:#0c1524;--mut:#5d6874;--maxw:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",system-ui,sans-serif;line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
ul.list{margin:14px 0 0 22px}
ul.list li{margin-bottom:10px}
b,strong{color:var(--ink2)}

header.site{position:sticky;top:0;z-index:60;background:#fff;border-bottom:2px solid var(--blue)}
.top{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800}
.logo .mark{width:100%;height:38px;width:38px;border-radius:6px;display:grid;place-items:center;color:#fff;font-weight:900;background:var(--dark)}
.logo .word{font-size:1.2rem;color:var(--ink2)}
.logo .word small{display:block;font-size:.6rem;font-weight:700;color:var(--blue);letter-spacing:.14em}
nav.main{display:flex;gap:20px;align-items:center;font-size:.9rem}
nav.main a{color:var(--mut);font-weight:600;padding:6px 2px;border-bottom:2px solid transparent}
nav.main a.active,nav.main a:hover{color:var(--blue);border-color:var(--blue)}
.nav-toggle{display:none;background:none;border:0;font-size:1.7rem;color:var(--ink2);cursor:pointer}

.btn{display:inline-block;background:var(--blue);color:#fff;padding:12px 28px;border-radius:6px;font-weight:700;font-size:.95rem;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(30,111,217,.3)}
.btn.ghost{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}
.btn.sm{padding:8px 16px;font-size:.84rem}

/* news ticker */
.ticker{background:var(--dark);color:#cdd8e6;font-size:.82rem;padding:9px 0;overflow:hidden;white-space:nowrap}
.ticker .track{display:inline-flex;gap:40px;padding-left:24px}
.ticker b{color:var(--red)} 

.hero{padding:66px 0 40px;background:linear-gradient(180deg,#eef4fb,#f7f9fb)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero h1{font-size:clamp(1.8rem,4.4vw,3rem);line-height:1.25;color:var(--ink2);font-weight:800}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero .sub{margin:18px 0 0;max-width:620px;color:var(--mut);font-size:1.02rem}
.hero .cta-row{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}
.hero-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:0 14px 40px rgba(12,21,36,.1)}
.tick-row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);font-size:.9rem}
.tick-row:last-child{border-bottom:0}
.tick-row .n{font-family:ui-monospace,monospace;color:var(--ink2);font-weight:700}
.tick-row .chg{color:var(--red);font-weight:700}
.tick-row .chg.up{color:var(--blue)}
.hero-card .lab{font-size:.78rem;color:var(--mut);margin-bottom:6px;letter-spacing:.05em}

section.blk{padding:60px 0}
section.blk.alt{background:#eaf1f9}
h2.sec{font-size:1.7rem;font-weight:800;margin-bottom:10px;color:var(--ink2)}
p.sec-sub{color:var(--mut);margin-bottom:30px;max-width:680px}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:0 6px 18px rgba(12,21,36,.05)}
.card .ic{width:44px;height:44px;border-radius:10px;background:#eaf1f9;color:var(--blue);display:grid;place-items:center;font-size:1.3rem;font-weight:800;margin-bottom:12px}
.card h3{font-size:1.12rem;margin-bottom:8px;color:var(--ink2)}
.card p{color:var(--mut);font-size:.94rem}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-top:5px solid var(--blue);border-radius:12px;padding:24px}
.ph-line{padding:13px 0;border-bottom:1px dashed var(--line);font-size:.93rem}
.ph-line:last-child{border-bottom:0}
.ph-line b{display:block;color:var(--ink2);margin-bottom:2px}
.note{background:#eaf1f9;border-left:4px solid var(--blue);padding:15px 20px;border-radius:6px;color:#3c4a5c;font-size:.92rem;margin-top:24px}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}
.chips span{background:#fff;border:1px solid var(--line);padding:6px 14px;border-radius:999px;color:var(--blue);font-weight:600;font-size:.88rem}
.narrow{max-width:840px!important}
.warn{background:#fff5f5;border-left:4px solid var(--red);padding:15px 20px;border-radius:6px;color:#8a3238;font-size:.92rem;margin-top:24px}

.phead{padding:52px 0 28px;border-bottom:1px solid var(--line);background:#fff}
.phead h1{font-size:clamp(1.8rem,4.2vw,2.8rem);color:var(--ink2);font-weight:800;line-height:1.2}
.lede{margin-top:14px;max-width:700px;color:var(--mut);font-size:1.03rem}
.crumb{font-size:.86rem;color:var(--mut);margin-bottom:16px}
.crumb a{color:var(--blue);font-weight:600}

.cta-card{background:linear-gradient(120deg,#14213d,#1e6fd9);color:#fff;border-radius:16px;padding:42px 38px;text-align:center}
.cta-card h2{color:#fff;font-size:1.5rem;font-weight:800}
.cta-card p{color:#dce9f8;margin:10px 0 22px}
.cta-card .btn{background:#fff;color:var(--ink2)}

table.tb{width:100%;border-collapse:collapse;font-size:.92rem;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.tb th,.tb td{padding:12px 15px;border-bottom:1px solid var(--line);text-align:left}
.tb th{background:var(--ink2);color:#fff;font-weight:700}
.tb tr:last-child td{border-bottom:0}

.faqwrap{display:flex;flex-direction:column;gap:12px}
.faq{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.faq summary{padding:18px 22px;cursor:pointer;font-weight:700;color:var(--ink2);list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";font-size:1.2rem;color:var(--blue)}
.faq[open] summary::after{content:"－"}
.faq .a{padding:4px 22px 16px;color:var(--mut);font-size:.95rem}

footer.site{border-top:2px solid var(--blue);margin-top:56px;padding:42px 0 34px;color:var(--mut);font-size:.88rem;background:#fff}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.ft nav{display:flex;gap:16px;flex-wrap:wrap}
.ft nav a:hover{color:var(--blue)}

@media(max-width:840px){
  .g3{grid-template-columns:1fr}
  .g2{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .hero .wrap{grid-template-columns:1fr}
  .nav-toggle{display:block}
  nav.main{position:fixed;top:66px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:18px 24px;gap:16px;border-bottom:1px solid var(--line);display:none}
  nav.main.open{display:flex}
  .phead{padding:36px 0 20px}
  .hero{padding:46px 0 28px}
}