@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@500;700;800&family=Noto+Serif+JP:wght@600;700&family=Noto+Sans+JP:wght@400;500;700;900&family=JetBrains+Mono:wght@400;600&display=swap');

:root{
  --kon:      #10152A;   /* 紺 深い藍 base */
  --kon-2:    #171E3B;   /* 紺 やや明るい面 */
  --kon-3:    #232B52;   /* 紺 罫線・境界 */
  --shu:      #C8402C;   /* 朱 鳥居の赤 accent */
  --shu-deep: #9C2E1F;
  --kincha:   #C9A24B;   /* 金茶 プレミアム */
  --gin:      #EEEFF4;   /* 銀白 本文（暗背景上） */
  --gin-dim:  #A9AFC7;   /* 銀白 減光 */
  --sumi:     #14182A;   /* 墨 本文（明背景上） */
  --washi:    #F7F4EC;   /* 和紙 明るい面 */
  --take:     #4F8C63;   /* 竹 安全状態 */

  --serif: 'Shippori Mincho', 'Noto Serif JP', serif;
  --sans: 'Noto Sans JP', sans-serif;
  --mono: 'JetBrains Mono', monospace;

  --radius: 2px;
  --maxw: 1180px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--kon);
  color:var(--gin);
  font-family:var(--sans);
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--serif); font-weight:700; margin:0; letter-spacing:.02em; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 28px; }
.eyebrow{
  font-family:var(--mono); font-size:12px; letter-spacing:.22em;
  color:var(--kincha); text-transform:uppercase; display:flex; align-items:center; gap:10px;
}
.eyebrow::before{ content:''; width:22px; height:1px; background:var(--kincha); display:inline-block; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(16,21,42,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--kon-3);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{ width:34px; height:34px; }
.brand-name{ font-family:var(--serif); font-size:20px; font-weight:800; color:var(--gin); letter-spacing:.04em; }
.brand-name small{ display:block; font-family:var(--mono); font-size:10px; color:var(--gin-dim); letter-spacing:.18em; font-weight:400; margin-top:2px; }

nav.main-nav ul{ display:flex; gap:36px; }
nav.main-nav a{
  font-size:14px; color:var(--gin-dim); position:relative; padding:6px 0;
  transition:color .2s ease;
}
nav.main-nav a:hover, nav.main-nav a.active{ color:var(--gin); }
nav.main-nav a.active::after{
  content:''; position:absolute; left:0; right:0; bottom:0; height:1px; background:var(--shu);
}

.header-actions{ display:flex; align-items:center; gap:18px; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--sans); font-weight:700; font-size:14px;
  padding:12px 26px; border-radius:var(--radius);
  cursor:pointer; border:1px solid transparent; transition:all .2s ease;
}
.btn-primary{ background:var(--shu); color:var(--washi); }
.btn-primary:hover{ background:var(--shu-deep); }
.btn-ghost{ border-color:var(--kon-3); color:var(--gin); }
.btn-ghost:hover{ border-color:var(--gin-dim); }
.btn-gold{ background:var(--kincha); color:var(--kon); }
.btn-gold:hover{ background:#dab35c; }
.btn-sm{ padding:9px 18px; font-size:13px; }

.nav-toggle{ display:none; background:none; border:0; color:var(--gin); font-size:22px; cursor:pointer; }

@media (max-width:900px){
  nav.main-nav{ display:none; }
  .header-actions .btn-ghost{ display:none; }
  .nav-toggle{ display:block; }
}

/* ---------- Hero ---------- */
.hero{
  position:relative; overflow:hidden;
  padding:96px 0 70px;
  border-bottom:1px solid var(--kon-3);
}
.hero::before{
  content:''; position:absolute; inset:0;
  background:
    radial-gradient(ellipse 700px 500px at 82% 10%, rgba(200,64,44,.16), transparent 60%),
    radial-gradient(ellipse 600px 600px at -5% 90%, rgba(201,162,75,.10), transparent 60%);
  pointer-events:none;
}
.hero .wrap{ position:relative; display:grid; grid-template-columns:1.05fr .95fr; gap:60px; align-items:center; }
@media (max-width:940px){ .hero .wrap{ grid-template-columns:1fr; } }

.hero h1{
  font-size:clamp(34px,4.6vw,54px); line-height:1.35; color:var(--gin); margin:22px 0 24px;
}
.hero h1 em{ font-style:normal; color:var(--shu); }
.hero p.lead{ font-size:16px; color:var(--gin-dim); max-width:46ch; margin-bottom:34px; }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; align-items:center; }
.hero-note{ font-family:var(--mono); font-size:12px; color:var(--gin-dim); margin-top:18px; letter-spacing:.03em; }

/* barrier visual */
.barrier-stage{ position:relative; width:100%; aspect-ratio:1/1; max-width:460px; margin:0 auto; }
.barrier-stage svg{ width:100%; height:100%; }
.ring{ transform-origin:250px 250px; opacity:0; }
.ring.show{ animation:ringIn .9s cubic-bezier(.2,.8,.2,1) forwards; }
@keyframes ringIn{
  0%{ opacity:0; transform:scale(.82); }
  100%{ opacity:1; transform:scale(1); }
}
.ring-label{ font-family:var(--mono); font-size:9.5px; fill:var(--gin-dim); letter-spacing:.08em; }
.core-pulse{ animation:pulseGlow 2.6s ease-in-out infinite; }
@keyframes pulseGlow{
  0%,100%{ filter:drop-shadow(0 0 0px rgba(200,64,44,.0)); }
  50%{ filter:drop-shadow(0 0 14px rgba(200,64,44,.55)); }
}

/* ---------- Section shells ---------- */
.section{ padding:96px 0; border-bottom:1px solid var(--kon-3); }
.section.washi{ background:var(--washi); color:var(--sumi); border-bottom:none; }
.section.washi .eyebrow{ color:var(--shu-deep); }
.section.washi .eyebrow::before{ background:var(--shu-deep); }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(26px,3.2vw,36px); margin-top:16px; line-height:1.5; }
.section.washi h2, .section.washi h3, .section.washi h4{ color:var(--sumi); }
.section.washi p{ color:#3B4258; }

/* feature grid */
.feature-grid{ display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--kon-3); border:1px solid var(--kon-3); }
.feature{ background:var(--kon); padding:34px 26px; }
.feature .num{ font-family:var(--mono); font-size:12px; color:var(--kincha); }
.feature h3{ font-size:17px; margin:18px 0 12px; color:var(--gin); }
.feature p{ font-size:13.5px; color:var(--gin-dim); }
@media (max-width:1000px){ .feature-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .feature-grid{ grid-template-columns:1fr; } }

/* stats strip */
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--kon-3); border-top:1px solid var(--kon-3); border-bottom:1px solid var(--kon-3); }
.stat{ background:var(--kon-2); padding:36px 28px; text-align:left; }
.stat .n{ font-family:var(--mono); font-size:34px; color:var(--shu); font-weight:600; }
.stat .l{ font-size:12.5px; color:var(--gin-dim); margin-top:8px; }
@media (max-width:800px){ .stats{ grid-template-columns:repeat(2,1fr); } }

/* pricing */
.plans{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
@media (max-width:1000px){ .plans{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .plans{ grid-template-columns:1fr; } }

.plan{
  border:1px solid var(--kon-3); background:var(--kon-2); padding:34px 28px;
  display:flex; flex-direction:column; position:relative;
}
.plan.featured{ border-color:var(--kincha); background:linear-gradient(180deg,#1c2242,#171b38); }
.plan-badge{
  position:absolute; top:-1px; right:-1px; background:var(--kincha); color:var(--kon);
  font-family:var(--mono); font-size:10.5px; padding:6px 12px; letter-spacing:.08em;
}
.plan-name{ font-family:var(--serif); font-size:19px; color:var(--gin); }
.plan-desc{ font-size:12.5px; color:var(--gin-dim); margin-top:8px; min-height:34px; }
.plan-price{ margin:26px 0 4px; display:flex; align-items:baseline; gap:6px; }
.plan-price .yen{ font-size:16px; color:var(--gin-dim); }
.plan-price .amt{ font-family:var(--mono); font-size:36px; color:var(--gin); font-weight:600; }
.plan-price .per{ font-size:12.5px; color:var(--gin-dim); }
.plan-tax{ font-size:11.5px; color:var(--gin-dim); margin-bottom:26px; }
.plan-features{ flex:1; margin-bottom:28px; }
.plan-features li{ font-size:13px; padding:9px 0; border-top:1px solid var(--kon-3); color:var(--gin-dim); display:flex; gap:10px; }
.plan-features li:first-child{ border-top:none; }
.plan-features li::before{ content:'✓'; color:var(--take); font-weight:700; }
.plan .btn{ width:100%; justify-content:center; }

/* voices / trust */
.voices{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:860px){ .voices{ grid-template-columns:1fr; } }
.voice{ background:#fff; border:1px solid #E4DFCF; padding:30px; }
.voice p{ font-size:14.5px; color:#3B4258; }
.voice .who{ margin-top:20px; font-family:var(--mono); font-size:12px; color:var(--shu-deep); }

/* faq */
.faq-item{ border-top:1px solid var(--kon-3); padding:22px 0; }
.faq-item:last-child{ border-bottom:1px solid var(--kon-3); }
.faq-q{ display:flex; justify-content:space-between; align-items:center; cursor:pointer; gap:20px; }
.faq-q h4{ font-size:15.5px; color:var(--gin); font-weight:700; font-family:var(--sans); }
.faq-q .plus{ font-family:var(--mono); color:var(--kincha); font-size:18px; transition:transform .25s ease; flex-shrink:0; }
.faq-item.open .plus{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-item.open .faq-a{ max-height:300px; }
.faq-a p{ padding-top:14px; font-size:13.5px; color:var(--gin-dim); max-width:70ch; }

/* CTA band */
.cta-band{ background:var(--shu); padding:64px 0; text-align:center; }
.cta-band h2{ color:#fff; font-size:clamp(24px,3vw,32px); }
.cta-band p{ color:rgba(255,255,255,.85); margin-top:14px; font-size:14.5px; }
.cta-band .hero-cta{ justify-content:center; margin-top:30px; }
.cta-band .btn-primary{ background:var(--kon); }
.cta-band .btn-ghost{ border-color:rgba(255,255,255,.4); color:#fff; }

/* footer */
footer{ background:var(--kon-2); padding:64px 0 30px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; margin-bottom:50px; }
@media (max-width:800px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.footer-grid h5{ font-family:var(--mono); font-size:11.5px; color:var(--kincha); letter-spacing:.12em; margin-bottom:18px; }
.footer-grid li{ margin-bottom:11px; }
.footer-grid a{ font-size:13.5px; color:var(--gin-dim); }
.footer-grid a:hover{ color:var(--gin); }
.footer-company p{ font-size:13px; color:var(--gin-dim); margin-top:6px; }
.footer-bottom{ border-top:1px solid var(--kon-3); padding-top:26px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px; }
.footer-bottom p{ font-size:12px; color:var(--gin-dim); font-family:var(--mono); }
.footer-badges{ display:flex; gap:16px; align-items:center; }
.footer-badges span{ font-size:11px; color:var(--gin-dim); border:1px solid var(--kon-3); padding:6px 12px; font-family:var(--mono); }

/* generic content page (privacy) */
.legal{ background:var(--washi); color:var(--sumi); padding:80px 0 100px; }
.legal .wrap{ max-width:880px; }
.legal h1{ font-size:clamp(28px,3.6vw,38px); color:var(--sumi); }
.legal .updated{ font-family:var(--mono); font-size:12px; color:#6B7290; margin-top:14px; }
.legal h2{ font-size:19px; color:var(--sumi); margin-top:52px; margin-bottom:16px; padding-bottom:12px; border-bottom:1px solid #E1DCC9; }
.legal p, .legal li{ font-size:14.5px; color:#3B4258; margin-bottom:14px; }
.legal ul{ padding-left:20px; list-style:disc; }
.legal table{ width:100%; border-collapse:collapse; margin:18px 0 26px; font-size:13.5px; }
.legal th,.legal td{ border:1px solid #E1DCC9; padding:12px 14px; text-align:left; vertical-align:top; }
.legal th{ background:#EFEADA; width:34%; font-weight:700; }
.legal .toc{ background:#fff; border:1px solid #E1DCC9; padding:24px 28px; margin-top:34px; }
.legal .toc h5{ font-family:var(--mono); font-size:11.5px; letter-spacing:.1em; color:var(--shu-deep); margin-bottom:14px; }
.legal .toc ol{ list-style:decimal; padding-left:18px; }
.legal .toc li{ margin-bottom:8px; }
.legal .toc a{ color:#3B4258; font-size:13.5px; }
.legal .toc a:hover{ color:var(--shu-deep); }

/* contact page */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:60px; }
@media (max-width:900px){ .contact-grid{ grid-template-columns:1fr; } }
.info-card{ background:#fff; border:1px solid #E1DCC9; padding:34px; margin-bottom:20px; }
.info-card h3{ font-size:15px; color:var(--sumi); margin-bottom:16px; }
.info-row{ display:flex; gap:14px; padding:10px 0; border-top:1px solid #EFEADA; font-size:13.5px; }
.info-row:first-of-type{ border-top:none; }
.info-row .k{ width:110px; flex-shrink:0; color:#6B7290; font-family:var(--mono); font-size:11.5px; padding-top:2px; }
.info-row .v{ color:#3B4258; }
.info-row a{ color:var(--shu-deep); }
.map-embed{ border:1px solid #E1DCC9; height:220px; background:#EFEADA repeating-linear-gradient(135deg,#EFEADA 0 12px,#E7E1CC 12px 24px); display:flex; align-items:center; justify-content:center; font-family:var(--mono); font-size:11.5px; color:#6B7290; margin-top:20px; }

.form-card{ background:#fff; border:1px solid #E1DCC9; padding:38px; }
.form-row{ margin-bottom:22px; }
.form-row label{ display:block; font-size:12.5px; color:#6B7290; margin-bottom:8px; font-family:var(--mono); letter-spacing:.03em; }
.form-row input, .form-row select, .form-row textarea{
  width:100%; border:1px solid #D8D2BC; background:var(--washi); padding:13px 14px;
  font-family:var(--sans); font-size:14px; color:var(--sumi); border-radius:var(--radius);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{
  outline:none; border-color:var(--shu-deep); background:#fff;
}
.form-row textarea{ resize:vertical; min-height:130px; }
.form-two{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:520px){ .form-two{ grid-template-columns:1fr; } }
.form-note{ font-size:12px; color:#6B7290; margin-top:6px; }
.form-msg{ display:none; margin-top:18px; padding:14px 16px; font-size:13.5px; border:1px solid var(--take); background:#EEF6EF; color:#2C5B39; }
.form-msg.show{ display:block; }

/* mobile nav sheet */
.mobile-nav{
  position:fixed; inset:76px 0 0 0; background:var(--kon); z-index:99;
  transform:translateY(-8px); opacity:0; pointer-events:none; transition:all .22s ease;
  padding:30px 28px; overflow-y:auto;
}
.mobile-nav.open{ opacity:1; transform:translateY(0); pointer-events:auto; }
.mobile-nav a{ display:block; padding:16px 0; font-size:16px; border-bottom:1px solid var(--kon-3); color:var(--gin); }
.mobile-nav .btn{ margin-top:24px; width:100%; justify-content:center; }