:root{
  --ink:#18222b;--muted:#65727c;--line:#dfe6ea;--soft:#f7f9fa;
  --brand:#0b6b58;--brand-dark:#075044;--accent:#ec7f2d;--accent-soft:#fff4ea;
  --good:#087a58;--good-bg:#ebf8f2;--warn:#8a5a00;--warn-bg:#fff8e8;
  --danger:#a53a2b;--danger-bg:#fff0ed;--shadow:0 16px 48px rgba(20,44,57,.10)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI","Noto Sans JP",sans-serif;color:var(--ink);background:#fff;line-height:1.72}
a{color:var(--brand)}
header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{max-width:1160px;margin:auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{font-weight:950;font-size:24px;letter-spacing:-.04em;text-decoration:none;color:var(--ink)}
.logo small{display:block;font-size:10px;letter-spacing:.02em;color:var(--muted);font-weight:700;margin-top:-3px}
.navlinks{display:flex;align-items:center;gap:17px;font-size:14px}.navlinks a{text-decoration:none;color:#384852;font-weight:800}
.header-cta{background:var(--brand);color:#fff!important;padding:9px 13px;border-radius:11px}
main{max-width:1160px;margin:auto;padding:26px 20px 88px}
.hero{padding:32px 0 18px;display:grid;grid-template-columns:1.12fr .88fr;gap:28px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;background:#eaf6f2;color:var(--brand-dark);border-radius:999px;padding:6px 10px;font-size:13px;font-weight:900}
h1{font-size:clamp(39px,6vw,70px);line-height:1.04;letter-spacing:-.052em;margin:15px 0 16px}
h2{font-size:clamp(27px,4vw,40px);line-height:1.18;letter-spacing:-.03em;margin:0 0 12px}
h3{line-height:1.35;margin:0 0 7px}
.lead{font-size:19px;color:#465761;max-width:730px;margin:0}.micro{font-size:12px;color:var(--muted)}
.hero-promise{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.promise{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 9px;font-size:12px;font-weight:850;color:#445963}
.hero-side{border:1px solid #d8e8e3;background:linear-gradient(155deg,#f5fbf9,#fff);border-radius:24px;padding:21px;box-shadow:var(--shadow)}
.hero-side h2{font-size:24px}.hero-side ol{margin:10px 0 0;padding-left:22px}.hero-side li{margin:9px 0}
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0 6px}
.entry{border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px;text-decoration:none;color:var(--ink);box-shadow:0 7px 26px rgba(20,44,57,.04);transition:.15s}
.entry:hover{transform:translateY(-2px);border-color:#b9d8ce}.entry b{font-size:18px;display:block;margin-bottom:4px}.entry span{font-size:13px;color:var(--muted)}
.journey{border:1px solid #d5e4df;border-radius:24px;box-shadow:var(--shadow);overflow:hidden;margin:24px 0 30px;background:#fff}
.journey-head{padding:22px 22px 10px}.journey-head p{margin:0;color:var(--muted)}
.tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:0 22px 15px}
.tab{border:1px solid var(--line);background:#fff;border-radius:13px;padding:12px;font-weight:900;cursor:pointer;color:#40515b}
.tab.active{border-color:var(--brand);background:#eef9f5;color:var(--brand-dark)}
.panel{display:none;padding:4px 22px 24px}.panel.active{display:block}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:13px}
.field label{display:block;font-size:14px;font-weight:900;margin-bottom:6px}.field input,.field select{width:100%;border:1px solid #bcc9d0;border-radius:12px;background:#fff;padding:13px 14px;font-size:16px;color:var(--ink)}
.field input:focus,.field select:focus{outline:3px solid rgba(11,107,88,.12);border-color:var(--brand)}
.btn,button{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;border-radius:12px;padding:13px 18px;font-weight:950;text-decoration:none;cursor:pointer}
.primary{background:var(--brand);color:#fff}.primary:hover{filter:brightness(.96)}.secondary{background:#edf6f3;color:var(--brand-dark)}.ghost{background:#fff;border:1px solid var(--line);color:#40515b}
.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:14px}
.answer{margin:16px 0 0;border-radius:18px;padding:18px;background:#f6faf8;border:1px solid #d9ebe5}
.answer.good{background:var(--good-bg);border-color:#caeadf}.answer.warn{background:var(--warn-bg);border-color:#f0dba5}.answer.high{background:var(--danger-bg);border-color:#f2c8c0}
.answer .big{font-size:31px;font-weight:950;letter-spacing:-.035em}.answer .sub{color:var(--muted);font-size:14px}
.result-list{display:grid;gap:11px;margin-top:12px}.result{border:1px solid var(--line);border-radius:17px;padding:17px;background:#fff}.result.best{border:2px solid var(--good);box-shadow:0 10px 30px rgba(8,122,88,.09)}
.result-top{display:flex;align-items:flex-start;justify-content:space-between;gap:15px}.provider{font-size:12px;color:var(--muted);font-weight:800}.plan{font-size:18px;font-weight:950}.price{font-size:29px;font-weight:950;white-space:nowrap}
.badge{display:inline-block;border-radius:999px;padding:4px 8px;background:var(--good-bg);color:var(--good);font-size:12px;font-weight:950}
.delta{display:inline-flex;margin-top:8px;border-radius:9px;padding:6px 9px;background:#eaf8f2;color:var(--good);font-weight:900;font-size:13px}.delta.loss{background:#fff2ec;color:#9b432f}.delta.neutral{background:#f0f3f4;color:#5a6b74}
.card{border:1px solid var(--line);border-radius:22px;padding:23px;background:#fff;margin:18px 0;box-shadow:0 7px 26px rgba(20,44,57,.035)}
.quick-answer{border-left:5px solid var(--brand);background:#f6faf8;padding:16px 18px;border-radius:0 15px 15px 0;margin:16px 0}.quick-answer b{display:block;font-size:19px;margin-bottom:4px}
.section-head{display:flex;justify-content:space-between;gap:22px;align-items:end;margin-bottom:14px}.section-head p{margin:0;color:var(--muted);max-width:650px}
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.path{border:1px solid var(--line);border-radius:16px;padding:17px;text-decoration:none;color:var(--ink);background:#fff}.path b{display:block}.path span{display:block;color:var(--muted);font-size:13px;margin-top:3px}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:11px}.trust{border:1px solid var(--line);border-radius:15px;padding:15px}.trust b{display:block}.trust span{font-size:13px;color:var(--muted)}
table.data{width:100%;border-collapse:collapse}.data th,.data td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.data th{background:var(--soft)}
details{border-top:1px solid var(--line);padding:13px 0}summary{font-weight:900;cursor:pointer}
.article{max-width:860px}.article h1{font-size:clamp(34px,5vw,55px)}.article .lead{font-size:18px}.sourcebox{background:#f8fafb;border-left:4px solid #7a909c;padding:13px 15px;margin:17px 0}.sourcebox a{word-break:break-all}
.compare-inline{border:1px solid #d5e4df;background:#fbfdfc;border-radius:18px;padding:18px;margin:20px 0}.compare-inline input,.compare-inline select{width:100%;padding:12px;border:1px solid #bdcbd1;border-radius:10px;font-size:16px}
.notice{border-left:4px solid var(--accent);background:var(--accent-soft);padding:12px 14px;border-radius:0 12px 12px 0}
.faq details p{color:var(--muted)}.faq details{padding:14px 0}
footer{border-top:1px solid var(--line);padding:28px 20px;color:var(--muted);font-size:13px}.footerin{max-width:1160px;margin:auto}
.mobile-sticky{display:none}
@media(max-width:900px){.hero{grid-template-columns:1fr}.hero-side{display:none}.entry-grid,.path-grid{grid-template-columns:1fr}.trust-grid{grid-template-columns:1fr 1fr}.section-head{display:block}.section-head p{margin-top:8px}}
@media(max-width:700px){.navlinks a:not(.header-cta){display:none}main{padding:20px 14px 90px}h1{font-size:43px}.tabs{grid-template-columns:1fr}.entry-grid{grid-template-columns:1fr}.trust-grid{grid-template-columns:1fr}.result-top{display:block}.price{margin-top:7px}.panel,.journey-head,.tabs{padding-left:15px;padding-right:15px}.mobile-sticky{display:block;position:fixed;left:11px;right:11px;bottom:10px;z-index:40}.mobile-sticky a{display:block;text-align:center;background:var(--brand);color:#fff;text-decoration:none;padding:14px;border-radius:14px;font-weight:950;box-shadow:0 10px 28px rgba(11,107,88,.25)}}


/* v6: consumer-first bill scan */
.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0}
.choice-card{border:2px solid var(--line);border-radius:22px;padding:23px;background:#fff;text-decoration:none;color:var(--ink);cursor:pointer;transition:.15s;box-shadow:0 9px 28px rgba(20,44,57,.05)}
.choice-card:hover{transform:translateY(-2px);border-color:#9ccbbd}
.choice-card.primary-choice{border-color:#b9ddd2;background:linear-gradient(145deg,#f4fbf8,#fff)}
.choice-icon{font-size:28px}.choice-card h2{font-size:25px;margin:8px 0}.choice-card p{color:var(--muted);margin:0}
.flowbox{border:1px solid var(--line);border-radius:24px;padding:22px;background:#fff;box-shadow:var(--shadow);margin:18px 0}
.upload-zone{border:2px dashed #a8c8bd;border-radius:18px;padding:28px 18px;text-align:center;background:#f8fcfa;cursor:pointer}
.upload-zone:hover{background:#f2faf7}.upload-zone input{display:none}
.upload-zone strong{display:block;font-size:20px;margin-bottom:4px}.upload-zone span{color:var(--muted);font-size:13px}
.preview{max-width:100%;max-height:330px;border-radius:14px;margin-top:14px;display:none;border:1px solid var(--line)}
.ocr-progress{margin-top:12px;font-size:13px;color:var(--muted)}
.extracted{display:none;margin-top:16px}
.extracted .field{margin-bottom:10px}
.scan-badge{display:inline-block;border-radius:999px;padding:5px 9px;background:#edf8f4;color:var(--good);font-size:12px;font-weight:900}
.scan-warning{background:#fff8e8;border:1px solid #efd69d;border-radius:13px;padding:12px;font-size:13px;margin-top:12px}
.simple-result{margin-top:18px;border-radius:20px;padding:21px;background:#f5faf8;border:1px solid #d6e9e2}
.simple-result .saving{font-size:33px;font-weight:950;letter-spacing:-.04em}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}.step{background:#f7f9fa;border-radius:14px;padding:14px}.step b{display:block;font-size:18px}
.hidden{display:none!important}
@media(max-width:760px){.choice-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.choice-card h2{font-size:22px}}

/* v7 accuracy / coverage */
.secondary-badge{background:#eef3fa;color:#385b84}.muted-result{background:#fafbfc}.energy-total{display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:13px;padding:12px;margin:12px 0}.energy-total span{color:var(--muted);font-size:13px}.coverage-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.coverage-item{border:1px solid var(--line);border-radius:16px;padding:16px}.status-ok{color:var(--good);font-weight:900}.status-warn{color:#8a5a00;font-weight:900}.privacy-note{background:#f4f7f8;border:1px solid #dce6ea;border-radius:13px;padding:12px;margin:12px 0;font-size:13px;color:#4f606a}

/* ===== v9 modern watercolor visual system ===== */
:root{
  --paper:#fbfaf6;
  --paper-2:#f5f1e8;
  --forest:#1f6151;
  --forest-2:#2f7965;
  --ink-soft:#33423d;
  --sand:#e9c59f;
  --sun:#f0a24c;
  --glass:rgba(255,255,255,.82);
}
body{
  background:
   radial-gradient(circle at 8% 3%, rgba(126,174,152,.10), transparent 30%),
   radial-gradient(circle at 94% 5%, rgba(240,162,76,.08), transparent 25%),
   var(--paper);
}
header{background:rgba(251,250,246,.88);border-bottom:1px solid rgba(91,115,105,.16)}
.logo{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:800;letter-spacing:-.025em}
.logo small{font-family:system-ui,-apple-system,"Segoe UI","Noto Sans JP",sans-serif}
.hero-v9{display:grid;grid-template-columns:1.02fr .98fr;gap:42px;align-items:center;padding:48px 0 24px}
.hero-v9 h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:800;font-size:clamp(42px,6vw,72px);line-height:1.06;letter-spacing:-.055em}
.hero-v9 .lead{font-size:18px;max-width:680px}
.watercolor-frame{position:relative;border-radius:32px;overflow:hidden;box-shadow:0 24px 70px rgba(43,81,70,.16);border:1px solid rgba(60,100,88,.12);background:#f0eee7}
.watercolor-frame img{display:block;width:100%;height:auto}
.watercolor-caption{position:absolute;left:18px;right:18px;bottom:18px;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);padding:12px 15px;border-radius:16px;font-size:13px;color:#41534d}
.intent-grid-v9{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:26px 0 34px}
.intent-card-v9{position:relative;overflow:hidden;border:1px solid rgba(78,111,100,.15);background:rgba(255,255,255,.88);border-radius:24px;padding:22px;text-decoration:none;color:var(--ink);box-shadow:0 12px 34px rgba(39,75,64,.06);transition:.2s}
.intent-card-v9:before{content:"";position:absolute;width:130px;height:130px;border-radius:50%;right:-50px;top:-50px;background:radial-gradient(circle,rgba(132,184,164,.22),rgba(132,184,164,0) 70%)}
.intent-card-v9:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(39,75,64,.10)}
.intent-card-v9 .kicker{font-size:12px;color:var(--forest);font-weight:900;letter-spacing:.04em}
.intent-card-v9 h2{font-size:23px;margin:7px 0}
.intent-card-v9 p{margin:0;color:var(--muted);font-size:14px}
.intent-card-v9.urgent{background:linear-gradient(145deg,#fff8ee,#fff);border-color:#efd4b5}
.flowbox.v9{background:rgba(255,255,255,.9);border:1px solid rgba(64,105,91,.17);box-shadow:0 20px 55px rgba(35,72,61,.08);border-radius:28px}
.bill-head-v9{display:grid;grid-template-columns:1fr 290px;gap:24px;align-items:center;margin-bottom:18px}
.bill-head-v9 img{width:100%;border-radius:22px}
.upload-zone{background:linear-gradient(145deg,#f6fbf8,#fffaf5);border-color:#9fc4b6;padding:34px 20px}
.upload-zone strong{font-size:22px}
.source-pill{display:inline-flex;gap:6px;align-items:center;background:#f3f7f5;border:1px solid #d8e5df;padding:6px 9px;border-radius:999px;font-size:12px;text-decoration:none;color:#315d50;font-weight:800}
.proof{margin-top:12px;border:1px solid #dce7e2;border-radius:14px;padding:0 12px;background:#fbfdfc}
.proof summary{padding:11px 0;font-size:13px;color:#315d50}
.proof table{width:100%;border-collapse:collapse;font-size:13px}.proof td{padding:7px 4px;border-top:1px solid #e7eeeb}.proof td:last-child{text-align:right;font-weight:800}
.proof-links{display:flex;gap:7px;flex-wrap:wrap;padding:10px 0 12px}
.reason-box{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}
.reason{background:#f8faf9;border-radius:13px;padding:12px;border:1px solid #e3ebe7}.reason b{display:block;font-size:17px}.reason span{font-size:12px;color:var(--muted)}
.urgent-strip{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:center;background:linear-gradient(130deg,#254f45,#2e755f);color:white;border-radius:27px;padding:25px;margin:28px 0;box-shadow:0 20px 50px rgba(35,77,65,.14)}
.urgent-strip h2{margin:0;color:white}.urgent-strip p{color:rgba(255,255,255,.82);margin:7px 0 0}
.urgent-actions{display:flex;justify-content:flex-end;gap:9px;flex-wrap:wrap}
.btn.light{background:white;color:#1e5a4b}.btn.sun{background:#f2a34b;color:#352718}
.knowledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.knowledge-card{border:1px solid rgba(63,99,88,.15);border-radius:20px;padding:20px;background:rgba(255,255,255,.82);text-decoration:none;color:var(--ink)}
.knowledge-card .num{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:30px;color:#6f9d8c}
.knowledge-card h3{font-size:19px;margin:4px 0}.knowledge-card p{font-size:13px;color:var(--muted);margin:0}
.article-v9 h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif}
.callout-v9{background:linear-gradient(145deg,#eff8f4,#fff);border:1px solid #cfe1da;border-radius:18px;padding:18px;margin:20px 0}
.fast-table{width:100%;border-collapse:separate;border-spacing:0 8px}.fast-table td,.fast-table th{padding:13px 14px;text-align:left}.fast-table tr{background:white}.fast-table td:first-child,.fast-table th:first-child{border-radius:12px 0 0 12px}.fast-table td:last-child,.fast-table th:last-child{border-radius:0 12px 12px 0}
.tip-list{display:grid;gap:12px}.tip-item{border:1px solid #e1e8e4;border-radius:17px;padding:17px;background:white}.tip-item strong{font-size:18px}
@media(max-width:900px){
  .hero-v9{grid-template-columns:1fr;gap:22px;padding-top:25px}.watercolor-frame{max-width:680px}
  .intent-grid-v9,.knowledge-grid{grid-template-columns:1fr}.urgent-strip{grid-template-columns:1fr}.urgent-actions{justify-content:flex-start}
  .bill-head-v9{grid-template-columns:1fr}.bill-head-v9 img{max-width:320px}.reason-box{grid-template-columns:1fr}
}

/* ===== v10 Japanese typography / editorial polish ===== */
html{line-break:strict}
body{
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic","Noto Sans JP",system-ui,-apple-system,sans-serif;
  letter-spacing:.015em;
  word-break:normal;
  overflow-wrap:break-word;
}
p,li,td,th,summary,span{word-break:normal;line-break:strict}
h1,h2,h3{
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic","Noto Sans JP",system-ui,-apple-system,sans-serif;
  letter-spacing:-.018em;
  word-break:auto;
  line-break:strict;
  text-wrap:pretty;
}
.hero-v9 h1{
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic","Noto Sans JP",system-ui,-apple-system,sans-serif;
  font-size:clamp(39px,5.4vw,64px);
  line-height:1.17;
  letter-spacing:-.035em;
  max-width:13.5em;
}
.hero-v9 .lead{line-height:1.95;max-width:40em}
.article{font-size:16px}.article p{line-height:2}.article li{line-height:1.85}
.article h1{font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic","Noto Sans JP",system-ui,-apple-system,sans-serif;line-height:1.28;letter-spacing:-.025em}
.article h2{margin-top:42px;line-height:1.4}
.watercolor-caption{line-height:1.7}
.savings-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}
.savings-summary>div{background:#f7faf8;border:1px solid #dfe9e4;border-radius:16px;padding:16px}
.savings-summary b{display:block;font-size:25px;color:#235d4e}.savings-summary span{font-size:12px;color:var(--muted)}
.saving-table{width:100%;border-collapse:separate;border-spacing:0 7px;margin:18px 0 30px}
.saving-table th{font-size:12px;color:#5a6a64;padding:8px 10px;text-align:left}
.saving-table td{background:#fff;padding:13px 10px;border-top:1px solid #e4ebe7;border-bottom:1px solid #e4ebe7;vertical-align:top}
.saving-table td:first-child{border-left:1px solid #e4ebe7;border-radius:12px 0 0 12px}
.saving-table td:last-child{border-right:1px solid #e4ebe7;border-radius:0 12px 12px 0}
.saving-table .money{font-weight:900;color:#1f6754;white-space:nowrap}
.saving-table .kwh{font-weight:800;white-space:nowrap}
.action-checker{background:linear-gradient(145deg,#f1f8f5,#fff);border:1px solid #d3e4dc;border-radius:22px;padding:20px;margin:24px 0}
.action-checker label{display:flex;gap:10px;align-items:flex-start;padding:11px 0;border-bottom:1px solid #e5ece8;cursor:pointer}
.action-checker label:last-of-type{border-bottom:0}
.action-checker input{margin-top:5px}
.action-total{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-top:15px;padding-top:15px;border-top:1px solid #d6e4dd}
.action-total b{font-size:30px;color:#1f6754}.action-total span{font-size:13px;color:var(--muted)}
.editor-note{background:#fff8eb;border-left:4px solid #d99a50;padding:13px 16px;border-radius:0 13px 13px 0;margin:20px 0;line-height:1.8}
@media(max-width:800px){
  .savings-summary{grid-template-columns:1fr}.saving-table{font-size:13px}
  .saving-table td,.saving-table th{padding:10px 7px}.action-total{display:block}.action-total b{display:block;margin-top:5px}
}