:root{--bg:#f7f5ef;--paper:#fff;--fg:#1f2a27;--sub:#5b6661;--ac:#1f6b57;--ac-d:#154d3f;--ac-l:#e4f0eb;--warm:#f3ead7;--line:#dfdbcf}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.85 "Hiragino Sans","Yu Gothic",Meiryo,sans-serif}
a{color:var(--ac)}
.top{display:flex;flex-wrap:wrap;gap:6px 20px;align-items:center;justify-content:space-between;padding:12px max(16px,calc((100% - 880px)/2));border-bottom:1px solid var(--line);background:var(--paper)}
.brand{font-weight:800;font-size:18px;letter-spacing:.02em;color:var(--ac-d);text-decoration:none;display:inline-flex;align-items:center;gap:8px}
.brand::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--ac);box-shadow:5px 5px 0 -1px var(--warm)}
.top nav a{margin-left:16px;text-decoration:none;color:var(--fg);font-size:14px}
.top nav a:hover{color:var(--ac)}
main{max-width:880px;margin:0 auto;padding:20px 16px 64px}
article{max-width:720px;margin:0 auto;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:26px 24px 30px}
footer{border-top:1px solid var(--line);padding:22px 16px 30px;text-align:center;font-size:13px;color:var(--sub);background:var(--paper)}
footer p{margin:6px 0}
h1{font-size:26px;line-height:1.5;margin:6px 0 14px}
h2{font-size:20px;line-height:1.5;margin:38px 0 12px;padding-left:12px;border-left:5px solid var(--ac)}
h3{font-size:17px;margin-top:24px}

/* hero */
.hero{margin:6px 0 4px;padding:30px 24px 26px;background:linear-gradient(135deg,var(--ac-l) 0%,#fbf6e8 100%);border:1px solid var(--line);border-radius:18px}
.eyebrow{display:inline-block;margin:0 0 10px;padding:2px 12px;border-radius:99px;background:var(--paper);border:1px solid var(--line);color:var(--ac-d);font-size:13px;font-weight:700}
.hero h1{font-size:32px;line-height:1.45;margin:0 0 12px;color:var(--ac-d)}
.hero p{color:var(--sub);margin:0 0 6px}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.btn{display:inline-block;padding:11px 20px;border-radius:10px;font-weight:700;text-decoration:none;font-size:15px;border:2px solid var(--ac);line-height:1.4}
.btn.pri{background:var(--ac);color:#fff}
.btn.pri:hover{background:var(--ac-d)}
.btn.sec2{background:var(--paper);color:var(--ac-d)}
.btn.sec2:hover{background:var(--ac-l)}

/* featured single-app first screen */
.feat{margin:6px 0 4px;padding:22px 20px 20px;background:var(--paper);border:1px solid var(--line);border-radius:18px}
.feat .pr{margin:0 0 8px;font-size:12px;color:var(--sub)}
.feat h1{font-size:26px;line-height:1.5;margin:4px 0 12px;color:var(--ac-d)}
.flow{background:var(--ac-l);border-radius:12px;padding:12px 16px;margin:0 0 14px}
.flow-h{margin:0 0 4px;font-weight:700;font-size:14px;color:var(--ac-d)}
.flow ol{margin:0;padding-left:22px;font-size:15px;line-height:1.7}
.fig{margin:0 0 14px}
.tag{display:inline-block;padding:1px 12px;border-radius:99px;background:var(--warm);color:var(--ac-d);font-weight:700;font-size:13px}
.fig{overflow-x:auto}
.diagram{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:8px}.dcard{flex:1 1 0;min-width:0;max-width:200px;height:auto}.darr{flex:0 0 14px;width:14px;height:14px;border-top:3px solid #1f6b57;border-right:3px solid #1f6b57;transform:rotate(45deg) scale(.7)}
.fignote{margin:4px 0 0;font-size:12px;color:var(--sub);line-height:1.6}
.facts{display:grid;gap:8px;margin:0 0 6px}
.facts div{display:grid;grid-template-columns:7em 1fr;gap:8px;padding:8px 0;border-top:1px solid var(--line);font-size:14.5px}
.facts dt{font-weight:700;color:var(--ac-d)}
.facts dd{margin:0}
.caution{margin-top:16px;padding:12px 16px;background:var(--warm);border-radius:10px;font-size:14px;color:#4b4636}
.caution ul{margin:6px 0 0;padding-left:20px;line-height:1.7}
.src{margin:10px 0 0;font-size:12px;color:var(--sub);line-height:1.6}

/* trust */
.trust{list-style:none;margin:14px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.trust li{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:11px 12px;font-size:13.5px;line-height:1.55;color:var(--sub)}
.trust b{display:block;color:var(--ac-d);font-size:14px;margin-bottom:2px}

/* entry cards */
.sec{margin:38px 0 12px;font-size:20px;padding:0;border:0}
.entry{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.entry a{display:block;background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--ac);border-radius:12px;padding:16px;text-decoration:none;color:var(--fg)}
.entry a:hover{background:var(--ac-l)}
.entry b{display:block;font-size:16px;color:var(--ac-d);margin-bottom:4px}
.entry span{font-size:13.5px;color:var(--sub);line-height:1.6;display:block}

/* article list */
.rows{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.rows li{display:grid;grid-template-columns:1fr auto;gap:2px 12px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.rows li:hover{border-color:var(--ac)}
.row-title{font-weight:700;font-size:16.5px;line-height:1.6;grid-column:1/2;text-decoration:none}
.row-desc{color:var(--sub);font-size:14px;line-height:1.7;grid-column:1/3}
.row-meta{grid-column:2/3;grid-row:1/2;text-align:right;white-space:nowrap;font-size:12px;color:var(--sub);align-self:start}
.row-cat{display:inline-block;margin-right:8px;padding:0 9px;border-radius:99px;background:var(--ac-l);color:var(--ac-d);font-weight:700}

/* about box on top */
.about-box{margin-top:34px;display:grid;gap:6px;background:var(--paper);border:1px solid var(--line);border-left:5px solid var(--ac);border-radius:12px;padding:16px 18px;font-size:14.5px}
.about-box b{color:var(--ac-d)}
.about-box p{margin:0}

/* article page */
.crumb{font-size:13px;color:var(--sub);margin:0 0 6px}
.crumb a{color:var(--sub)}
.cat{color:var(--sub);font-size:13px;margin:0}
.cat .row-cat{margin-right:6px}
.note{margin-top:36px;padding:12px 14px;background:var(--warm);border-radius:10px;font-size:14px;color:#4b4636}
.check{margin-top:18px;padding:14px 16px;background:var(--ac-l);border-radius:10px;font-size:14px;color:var(--ac-d)}
.check b{display:block;margin-bottom:2px}
.check p{margin:0}
.related{margin-top:30px;border-top:1px solid var(--line);padding-top:16px}
.related h2{font-size:16px;margin:0 0 8px;border:0;padding:0}
.related ul{margin:0;padding-left:20px;font-size:15px}
table.info{width:100%;border-collapse:collapse;margin:16px 0}
table.info th,table.info td{border:1px solid var(--line);padding:10px;text-align:left;vertical-align:top;font-size:15px}
table.info th{background:var(--warm);white-space:nowrap}

@media (max-width:720px){
.trust{grid-template-columns:1fr 1fr}
.entry{grid-template-columns:1fr}
}
@media (max-width:480px){
.hero{padding:22px 16px 20px;border-radius:14px}
.hero h1{font-size:25px}
h1{font-size:22px}
article{padding:20px 16px 24px;border-radius:12px}
.trust{grid-template-columns:1fr}
.rows li{grid-template-columns:1fr}
.row-meta{grid-column:1/2;grid-row:auto;text-align:left;margin-bottom:2px;order:-1}
.row-title,.row-desc{grid-column:1/2}
table.info th{white-space:normal}
.btn{width:100%;text-align:center}
.top nav a{margin-left:0;margin-right:14px}
}
@media (max-width:560px){.diagram{flex-direction:column}.dcard{flex:none;width:200px}.darr{transform:rotate(135deg) scale(.7)}}

/* v2 first screen: colorful */
.feat{padding:0;overflow:hidden;border:0;background:#fffaf0;border-radius:22px;box-shadow:0 6px 24px rgba(21,77,63,.15)}
.featTop{padding:24px 22px 22px;background:linear-gradient(135deg,#0f5b4d 0%,#1f8a6e 60%,#43b88d 100%);color:#fff}
.featTop .pr{color:#cfeee2;font-size:12px}
.featTop .eyebrow{background:#ffb703;border:0;color:#4a3000}
.featTop h1{color:#fff;font-size:30px;line-height:1.45;margin:6px 0 10px}
.featTop .lead{margin:0 0 14px;color:#e6fbf2;font-size:15px;line-height:1.7}
.cta.big .btn{font-size:17px;padding:14px 22px;border-radius:14px;border:0}
.cta.big .btn.pri{background:#ffb703;color:#3a2500;box-shadow:0 4px 0 #c98600}
.cta.big .btn.pri:hover{background:#ffc83d}
.cta.big .btn.sec2{background:#fff;color:#154d3f;box-shadow:0 4px 0 #b9d8cb}
.featBody{display:grid;grid-template-columns:1fr 260px;gap:20px;padding:20px 22px 6px;align-items:stretch}
.featL{display:flex;flex-direction:column;justify-content:space-between;gap:12px}.featL .scene{margin-bottom:0}.featL .flow{flex:1}
.fit{margin:0;padding:12px 14px;background:#e4f0eb;border-radius:14px;color:#154d3f;font-weight:700;line-height:1.7}
.cnote{margin:12px 0 0;font-size:13px;color:#d6f2e7}
.scene{width:100%;height:auto;display:block;border-radius:18px;margin-bottom:12px}
.bigfig{margin:0;text-align:center}
.bigphone{width:100%;max-width:260px;height:auto;filter:drop-shadow(0 8px 14px rgba(0,0,0,.2))}
.feat .flow{background:#fff3d6;border-radius:14px}
.feat .flow ol{font-size:16px}
.feat .tag{background:#ff6b57;color:#fff}
.feat .facts,.feat .caution,.feat .src{margin-left:22px;margin-right:22px}
.feat .src{padding-bottom:20px}
@media (max-width:640px){.featBody{grid-template-columns:1fr;padding:16px 16px 6px}.featTop{padding:20px 16px}.featTop h1{font-size:25px}.cta.big .btn{width:100%}.feat .facts,.feat .caution,.feat .src{margin-left:16px;margin-right:16px}}
/* v4 hero: phone figure is the main actor */
.featTop{display:grid;grid-template-columns:1fr 270px;column-gap:28px;grid-template-areas:"app fig" "tags fig" "h1 fig" "lead fig" "pr fig" "cta fig" "note fig";grid-template-rows:auto auto auto auto auto auto 1fr;align-items:start;padding:22px 26px 26px}
.featTop .pr{grid-area:pr}.featTop .appname{grid-area:app}.featTop .tags{grid-area:tags;margin:0 0 6px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}.featTop h1{grid-area:h1}.featTop .lead{grid-area:lead}.featTop .cta{grid-area:cta;margin-top:6px}.featTop .cnote{grid-area:note}
.featTop .tags .eyebrow{margin:0}
.free{display:inline-block;padding:2px 12px;border-radius:99px;background:#fff;color:#154d3f;font-size:13px;font-weight:800}
.heroFig{grid-area:fig;margin:0;text-align:center}
.heroFig .bigphone{width:100%;max-width:250px}
.heroFig figcaption{margin-top:6px;font-size:11px;color:#cfeee2}
.sub{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:20px 22px 6px;align-items:stretch}
.sub .scene{margin:0;height:100%;object-fit:cover}
.subR{display:flex;flex-direction:column;gap:10px}
.subR .fit{margin:0}.subR .flow{margin:0;padding:10px 14px}.subR .flow-h{font-size:13px;margin:0 0 6px}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;counter-reset:s}
.steps li{counter-increment:s;font-size:13px!important;line-height:1.4;background:#fff;border-radius:99px;padding:4px 12px 4px 8px;color:#154d3f}
.steps li:before{content:counter(s);display:inline-block;width:18px;height:18px;line-height:18px;text-align:center;border-radius:50%;background:#ff6b57;color:#fff;font-size:11px;font-weight:800;margin-right:6px}
.feat .flow ol.steps{font-size:13px}
@media (max-width:640px){
.featTop{grid-template-columns:1fr;grid-template-areas:"app" "tags" "h1" "lead" "fig" "pr" "cta" "note";grid-template-rows:none;padding:14px 16px 18px}
.featTop h1{font-size:23px;margin:2px 0 6px}.featTop .lead{font-size:14px;margin:0 0 8px}
.heroFig .bigphone{max-width:218px}.heroFig figcaption{display:none}
.featTop .cta{margin-top:10px}
.sub{grid-template-columns:1fr;padding:16px 16px 6px}
.sub .scene{height:auto}
}
@media (max-width:640px){
.featTop{grid-template-areas:"app" "tags" "h1" "lead" "pr" "cta" "note" "fig"!important;padding:10px 14px 16px!important}
.featTop .pr{font-size:13px;line-height:1.5;margin:0 0 4px}
.featTop .tags{margin:0 0 4px}
.featTop .tags .eyebrow,.free{font-size:11px;padding:2px 9px}
.featTop h1{font-size:20px!important;margin:0 0 6px!important;line-height:1.3}
.featTop .cta{margin:0 0 6px!important;gap:6px}
.featTop .cta .btn{padding:9px 12px!important;font-size:14px!important;min-height:0!important}
.heroFig .bigphone{max-width:200px}
.featTop .lead{font-size:13px;margin:6px 0 4px}
}
/* v5 */
.ls{display:block;margin-top:2px;font-size:11px;color:#cfeee2;text-decoration:underline}
.cnote{white-space:nowrap}
@media (max-width:640px){.featTop .cnote{font-size:11px;margin:0}.featTop .lead .ls{font-size:10.5px}}

/* v6 */
.lead .ls,.ls{display:inline;margin:0 0 0 .5em;font-size:10px;font-weight:400;color:#b9d9cd;opacity:.8;text-decoration:underline;text-underline-offset:2px;background:none;border:0;padding:0}
@media (max-width:640px){.featTop .lead .ls{font-size:10px}}

/* v7 */
.lead .ls,.ls{display:block;margin:4px 0 0;font-size:12px;color:#e6f6ef;opacity:1;white-space:nowrap;padding:4px 0;text-decoration:underline;text-underline-offset:3px}
@media (max-width:640px){.featTop .lead .ls,.lead .ls{font-size:11.5px;letter-spacing:-.02em}}
.feat .src{font-size:15px;line-height:1.8;color:#2b3733}

/* v8 */
.appname{margin:2px 0 4px;font-size:13px;color:#e6f6ef;font-weight:600}
.appname b{font-size:22px;color:#fff;margin-left:4px;font-weight:800;letter-spacing:.01em}
@media (max-width:640px){.appname{margin:0 0 2px}.appname b{font-size:20px}}

.sub img.scene{height:auto;object-fit:contain;aspect-ratio:3/2}

/* v12: 共通記事型 */
.concl{margin:14px 0;padding:14px 16px;background:var(--ac-l);border-left:5px solid var(--ac);border-radius:10px}
.concl b,.pts b,.srcbox b,.warn b{display:block;font-size:13px;color:var(--ac-d);margin-bottom:4px}
.concl p{margin:0;font-size:17px;font-weight:700;line-height:1.7;color:var(--ac-d)}
.pts{margin:14px 0 22px;padding:12px 16px;background:var(--paper);border:1px solid var(--line);border-radius:10px}
.pts ol{margin:0;padding-left:22px}.pts li{margin:4px 0;line-height:1.7}
.warn{margin:16px 0;padding:12px 16px;background:#fdf1e3;border:1px solid #e9c48f;border-radius:10px}
.warn b{color:#8a4b00}.warn ul{margin:0;padding-left:20px}
.srcbox{margin-top:28px;padding:12px 16px;background:var(--bg);border:1px solid var(--line);border-radius:10px;font-size:14px;color:var(--sub)}
.srcbox p{margin:0}.srcbox .dates{margin-top:4px;font-size:13px}
.asof{margin:10px 0 4px;font-size:13px;color:var(--sub);text-align:center}
article table{width:100%;border-collapse:collapse;margin:16px 0;display:block;overflow-x:auto}
article table th,article table td{border:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top;font-size:15px}
article table th{background:var(--warm)}

.featTop .asof{color:#e6fbf2;text-align:left;margin:6px 0 4px;font-size:12.5px;line-height:1.5}

/* v12: 【PR】はボタンの直前 / 表は見出しを項目の上に積む */
.featTop .pr{margin:10px 0 4px}
table.info,table.info tbody,table.info tr,table.info th,table.info td{display:block;width:100%;box-sizing:border-box}
table.info{border:0;margin:16px 0}
table.info tr{margin:0 0 12px}
table.info th{border-bottom:0;font-size:13px;padding:6px 10px;white-space:normal}
table.info td{padding:8px 10px}

.lead .ls,.ls{text-decoration:none}.lead .ls a,.ls a{color:inherit;text-decoration:underline;text-underline-offset:3px}