:root{
  --bg:#FAFAF7;
  --paper:#FFFFFF;
  --ink:#20231F;
  --muted:#6D706A;
  --line:#DEDDD6;
  --line-strong:#AAA9A1;
  --accent:#8C5A32;
  --accent-soft:#F4ECE5;
  --ok:#376A56;
  --warn:#8A651F;
  --bad:#8A4945;
  --dark:#232722;
  --radius:5px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:15px;
  line-height:1.85;
  letter-spacing:.005em;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:none;color:#68401f}
.wrap{max-width:1040px;margin:auto;padding:0 32px}
.site-header{background:rgba(250,250,247,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(10px)}
.nav{display:flex;align-items:stretch;justify-content:space-between;min-height:62px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:760;color:var(--ink);letter-spacing:-.015em;font-size:16px}
.brand::before{content:"";width:12px;height:12px;display:inline-block;border:1.5px solid var(--accent);background:linear-gradient(to bottom,transparent 0 30%,var(--accent) 30% 38%,transparent 38% 63%,var(--accent) 63% 71%,transparent 71% 100%)}
.navlinks{display:flex;align-items:stretch;gap:0;font-size:12.5px}
.navlinks a{display:flex;align-items:center;padding:0 14px;color:#4B4F49;border-bottom:2px solid transparent}
.navlinks a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.hero{padding:64px 0 42px;border-bottom:1px solid var(--line)}
.hero.compact{padding:48px 0 34px}
.eyebrow{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:11px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.14em;margin-bottom:13px}
.hero h1{font-size:clamp(34px,5vw,48px);line-height:1.28;margin:0;letter-spacing:-.035em;font-weight:700;max-width:18em;line-break:strict;word-break:normal;text-wrap:balance}
.hero.compact h1{font-size:clamp(31px,4vw,40px);max-width:24em}
.lead{font-size:15.5px;color:#4C504B;max-width:760px;margin:19px 0 0;line-height:1.95}
.notice,.warning{padding:15px 0;margin:24px 0 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:transparent;border-radius:0;color:#4B4F49}
.notice strong,.warning strong{color:var(--ink)}
.warning{border-left:3px solid var(--warn);padding-left:16px}
.hero .btn{margin-top:4px}
.hero p:has(.btn){margin-top:22px;margin-bottom:0}
section{padding:42px 0}
section+section{border-top:1px solid var(--line)}
section h2{line-height:1.45;letter-spacing:-.02em}
.section-title,.wrap>h2{margin:0 0 18px;font-size:20px;font-weight:680;display:flex;align-items:baseline;gap:12px}
main{counter-reset:ecsection}
main>section{counter-increment:ecsection}
main>section>.wrap>.section-title::before,main>section>.wrap>h2:first-child::before{
  content:counter(ecsection,decimal-leading-zero);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:11px;
  color:var(--accent);
  letter-spacing:.08em;
  font-weight:600;
}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{background:transparent;border:0;border-right:1px solid var(--line);border-radius:0;padding:22px 22px 22px 0;box-shadow:none}
.grid .card+.card{padding-left:22px}
.grid .card:last-child{border-right:0;padding-right:0}
.card h2,.card h3{margin:0 0 9px;font-size:16px;letter-spacing:-.015em}
.card p:last-child{margin-bottom:0}
.metric{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:24px;font-weight:650;letter-spacing:-.03em;color:var(--ink)}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.badge{display:inline-flex;align-items:center;padding:4px 7px;border:1px solid var(--line);border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10.5px;font-weight:600;background:transparent;color:#50544f;letter-spacing:.02em}
.badge.exact{border-color:#C6D8CF;color:var(--ok);background:#F5F9F6}
.badge.estimate{border-color:#DED1B4;color:var(--warn);background:#FBF8F0}
.badge.conditional{border-color:#DFC7C5;color:var(--bad);background:#FBF5F4}
.scroll{overflow-x:auto;border-top:1px solid var(--dark);border-bottom:1px solid var(--line);background:transparent}
table{width:100%;border-collapse:collapse;background:transparent;font-size:14px}
th,td{padding:13px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:transparent;font-size:11.5px;font-weight:650;color:#555A54;letter-spacing:.02em}
thead th{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:none;color:#4b4f4a}
tr:last-child td,tr:last-child th{border-bottom:0}
tbody th{font-family:inherit;font-size:13px;color:var(--ink);letter-spacing:0}
.calc{display:grid;grid-template-columns:310px 1fr;gap:44px;align-items:start}
.formbox{position:sticky;top:88px;align-self:start;border-top:1px solid var(--dark)!important;border-bottom:1px solid var(--line)!important;border-right:0!important;padding:20px 0!important}
.field{margin-bottom:18px}
.field label{display:block;font-weight:650;font-size:12.5px;margin-bottom:6px}
.field input,.field select{width:100%;padding:11px 10px;border:1px solid #CFCFC7;border-radius:3px;background:var(--paper);font:inherit;color:var(--ink)}
.field input:focus,.field select:focus{outline:2px solid rgba(140,90,50,.16);border-color:var(--accent)}
.results{display:grid;gap:0;border-top:1px solid var(--dark)}
.result{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:20px 4px}
.result.blocked{border-bottom-style:dashed}
.result-top{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.money{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:23px;font-weight:650;letter-spacing:-.03em;white-space:nowrap}
.breakdown{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:14px;font-size:12px;border-top:1px solid #E8E7E1}
.breakdown div{background:transparent;padding:9px 10px 2px 0;border-right:1px solid #E8E7E1}
.breakdown div+div{padding-left:10px}
.breakdown div:last-child{border-right:0}
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--accent);background:var(--accent);color:#fff;font-weight:650;font-size:13px;padding:10px 14px;border-radius:3px;cursor:pointer;min-height:42px}
.btn:hover{color:#fff;background:#714624}
.btn.secondary{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn.secondary:hover{color:var(--accent);border-color:var(--accent)}
.source-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--dark)}
.source-list li{margin:0;padding:13px 4px;border-bottom:1px solid var(--line)}
.source-list a::after{content:" ↗";font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px}
.footer{margin-top:28px;border-top:1px solid var(--line);padding:30px 0 48px;color:var(--muted);font-size:12px}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:12px}
.footer strong{color:var(--ink)}
.kicker{font-weight:700;color:var(--ink)}
.callout{border-left:3px solid var(--accent);padding:12px 16px;background:transparent;border-radius:0}
.pillrow{display:flex;gap:0;flex-wrap:wrap;margin-top:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pill{padding:8px 12px;border-right:1px solid var(--line);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10.5px;color:#5D615C}
.formula{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#F1F0EA;padding:12px 14px;border-radius:3px;overflow:auto;font-size:13px}
.toc{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.toc a{background:transparent;border:0;border-right:1px solid var(--line);border-radius:0;padding:7px 11px;font-size:12px}
.fact{font-weight:680;color:var(--ink)}
.source-note{border-top:1px solid var(--line);margin-top:12px;padding-top:10px}
.nowrap{white-space:nowrap}
.check,.excluded{list-style:none;padding:0;margin:0}
.check li,.excluded li{margin:8px 0;padding-left:20px;position:relative}
.check li:before{content:"✓";position:absolute;left:0;color:var(--ok);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700}
.excluded li:before{content:"—";position:absolute;left:2px;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700}
/* TOP-only reference index */
.reference-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--dark);border-bottom:1px solid var(--line)}
.reference-item{padding:18px 18px 18px 0;border-right:1px solid var(--line)}
.reference-item+.reference-item{padding-left:18px}
.reference-item:last-child{border-right:0}
.reference-item .micro{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;color:var(--accent);letter-spacing:.1em;text-transform:uppercase}
.reference-item h2{font-size:15.5px;margin:7px 0 6px}
.reference-item p{font-size:13px;color:var(--muted);margin:0}
.service-index{border-top:1px solid var(--dark)}
.service-row{display:grid;grid-template-columns:1.1fr .9fr 1.4fr auto;gap:16px;align-items:baseline;padding:14px 4px;border-bottom:1px solid var(--line);color:inherit}
.service-row:hover{background:#F4F1EB;color:inherit}
.service-name{font-weight:680;font-size:15px}
.service-plan{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10.5px;color:var(--muted)}
.service-note{font-size:13px;color:#555A54}
.service-arrow{color:var(--accent);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.hero-meta{display:flex;gap:0;flex-wrap:wrap;margin-top:22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hero-meta span{padding:7px 12px;border-right:1px solid var(--line);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;color:var(--muted)}
.hero-meta span:first-child{padding-left:0}

/* v0.5: natural Japanese line wrapping — visual design unchanged */
.headline-line{display:block;white-space:nowrap}
.phrase{display:inline-block;white-space:nowrap;margin-right:.18em}
p,li,td,.notice,.warning,.callout,.service-note{line-break:strict;word-break:normal;text-wrap:pretty}
h2,h3,.section-title{line-break:strict;word-break:normal;text-wrap:balance}
@supports (word-break:auto-phrase){
  p,li,td,.notice,.warning,.callout,.service-note{word-break:auto-phrase}
}

@media(max-width:800px){
  .wrap{padding:0 18px}
  .nav{min-height:56px}.navlinks{display:none}
  .hero{padding:42px 0 30px}.hero.compact{padding:34px 0 26px}
  .hero h1{font-size:31px;max-width:none}.hero.compact h1{font-size:29px;max-width:none}
  .headline-line{white-space:normal}
  .phrase{margin-right:.14em}
  .lead{font-size:14.5px;line-height:1.9}
  section{padding:32px 0}
  .grid,.grid.two,.reference-strip{grid-template-columns:1fr;border-bottom:0}
  .grid .card,.grid .card+.card,.reference-item,.reference-item+.reference-item{padding:17px 0;border-right:0;border-bottom:1px solid var(--line)}
  .calc{grid-template-columns:1fr;gap:28px}.formbox{position:static;top:auto}
  .breakdown{grid-template-columns:1fr 1fr}.result-top{align-items:flex-start}.money{font-size:20px}
  th,td{min-width:135px;padding:11px 10px}
  .service-row{grid-template-columns:1fr auto;gap:4px 12px;padding:13px 2px}
  .service-plan,.service-note{grid-column:1}.service-arrow{grid-row:1/4;grid-column:2;align-self:center}
  .hero-meta span{padding:7px 8px}.hero-meta span:first-child{padding-left:0}
}