:root{
  --blue:#1D5BF5;
  --blue-deep:#1247CC;
  --blue-soft:#EAF0FF;
  --navy:#0A142E;
  --navy-2:#0D1B3E;
  --ink:#101828;
  --gray:#5B6474;
  --gray-light:#98A2B3;
  --line:#E6EAF2;
  --bg:#F5F7FB;
  --white:#FFFFFF;
  --radius:14px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.05);
  --shadow-md:0 6px 24px -6px rgba(16,24,40,.10);
  --shadow-lg:0 18px 48px -12px rgba(10,20,46,.18);
  --font-display:'Archivo','Noto Sans JP',sans-serif;
  --font-body:'Noto Sans JP',sans-serif;
  --font-mono:'JetBrains Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Header (shared with index.html) ===== */
header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);box-shadow:0 2px 16px rgba(16,24,40,.06)}
.nav{display:flex;align-items:center;gap:28px;height:66px}
.logo{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:800;font-size:1.22rem;letter-spacing:-.01em;color:var(--navy)}
.logo-img{height:30px;width:auto;display:block}
.logo-img-dark{height:26px;width:auto;display:block;margin-bottom:14px}
.nav-links{display:flex;gap:4px;margin-left:8px}
.nav-links a{font-size:.83rem;font-weight:500;color:var(--gray);padding:8px 12px;border-radius:8px;transition:color .2s,background .2s;white-space:nowrap}
.nav-links a:hover{color:var(--navy);background:var(--blue-soft)}
.nav-links a.current{color:var(--blue);font-weight:700}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:.88rem;border-radius:10px;padding:11px 22px;transition:transform .18s,box-shadow .18s,background .18s,color .18s;white-space:nowrap}
.btn:focus-visible{outline:3px solid rgba(29,91,245,.4);outline-offset:2px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 18px -4px rgba(29,91,245,.45)}
.btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 10px 24px -6px rgba(29,91,245,.55)}
.btn-ghost{border:1.5px solid var(--line);color:var(--navy);background:#fff}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-sm{padding:8px 16px;font-size:.8rem;border-radius:8px}
.btn-lg{padding:15px 32px;font-size:.98rem;border-radius:12px}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px}
.hamburger span{width:22px;height:2px;background:var(--navy);border-radius:2px;transition:.3s}
.mobile-menu{display:none;position:fixed;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 24px 20px;z-index:99;box-shadow:var(--shadow-lg)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:12px 4px;font-weight:600;font-size:.95rem;border-bottom:1px solid var(--bg);color:var(--ink)}

/* ===== Page header ===== */
.page-hero{position:relative;padding:150px 0 64px;background:
  radial-gradient(1100px 500px at 82% 0%, rgba(29,91,245,.10), transparent 60%),
  linear-gradient(180deg,#FBFCFF 0%,#F2F5FC 100%);text-align:center}
.sec-eyebrow{display:inline-block;font-family:var(--font-display);font-size:.7rem;font-weight:800;letter-spacing:.22em;color:var(--blue);text-transform:uppercase;margin-bottom:14px}
.page-hero h1{font-family:var(--font-display);font-weight:900;font-size:clamp(1.8rem,3.6vw,2.6rem);letter-spacing:-.01em;color:var(--navy)}
.page-hero p{margin-top:14px;font-size:.95rem;color:var(--gray);max-width:520px;margin-left:auto;margin-right:auto}

/* ===== Steps strip ===== */
.steps-strip{display:flex;justify-content:center;gap:10px;margin-top:34px;flex-wrap:wrap}
.step-chip{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px 8px 8px;font-size:.76rem;font-weight:700;color:var(--gray);box-shadow:var(--shadow-sm)}
.step-chip b{width:22px;height:22px;border-radius:50%;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:.72rem}
.step-chip.active{border-color:var(--blue);color:var(--navy)}
.step-chip.active b{background:var(--blue);color:#fff}

/* ===== Form section ===== */
.form-section{padding:36px 0 96px}
.form-card{max-width:780px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg);padding:44px}
.form-card h2{font-family:var(--font-display);font-weight:800;font-size:1.2rem;color:var(--navy);margin-bottom:6px}
.form-card .form-lead{font-size:.82rem;color:var(--gray);margin-bottom:30px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.82rem;font-weight:700;color:var(--navy);margin-bottom:8px}
.required-tag{display:inline-block;color:#EF4444;font-size:.68rem;font-weight:800;letter-spacing:.02em;margin-left:6px;background:rgba(239,68,68,.08);padding:2px 7px;border-radius:5px;vertical-align:middle}
.form-group input,
.form-group select{
  width:100%;font-family:inherit;font-size:.92rem;color:var(--ink);
  padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;background:#fbfcfe;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.form-group input::placeholder{color:var(--gray-light)}
.form-group input:focus,
.form-group select:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(29,91,245,.12)}
.form-group input:invalid:not(:placeholder-shown){}
.form-note{margin-top:30px;padding:18px 20px;background:var(--bg);border:1px solid var(--line);border-radius:12px;font-size:.72rem;line-height:1.9;color:var(--gray)}
.form-submit{text-align:center;margin-top:34px}
.form-submit .btn{width:100%;max-width:320px}
.form-security{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;font-size:.74rem;color:var(--gray-light)}
.form-security svg{width:14px;height:14px}

@media(max-width:760px){
  .form-card{padding:30px 22px;border-radius:16px}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .nav-links{display:none}
  .hamburger{display:flex}
}

/* ===== Footer (shared with index.html) ===== */
footer{background:#070E22;color:#8FA0C6;padding:64px 0 32px;font-size:.8rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:36px;margin-bottom:44px}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{font-size:.76rem;line-height:1.8;color:#6B7A9E;max-width:270px}
.foot-col h4{font-size:.78rem;font-weight:800;color:#E8EDF9;margin-bottom:14px;letter-spacing:.04em}
.foot-col a{display:block;padding:5px 0;color:#8FA0C6;transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-risk{border-top:1px solid rgba(255,255,255,.08);padding-top:22px;font-size:.7rem;line-height:1.9;color:#5B6890}
.foot-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:20px;font-size:.72rem;color:#5B6890}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:600px){.foot-grid{grid-template-columns:1fr 1fr}}