:root {
  --bg: #f7f6f2;
  --panel: #ffffff;
  --ink: #1d2125;
  --sub: #5d636b;
  --line: #e2dfd8;
  --accent: #1f6f5c;
  --accent-ink: #ffffff;
  --accent-soft: #e5efe9;
  --warn: #fff3c4;
  --warnline: #d9ad00;
  --err: #b42318;
  --max: 1080px;
  --read: 720px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", "Meiryo", system-ui, sans-serif; font-size: 16px; line-height: 1.8; }
a { color: var(--accent); }
img { max-width: 100%; height: auto; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.read { max-width: var(--read); margin: 0 auto; padding: 0 16px; }

/* header / footer */
.site-head { background: var(--panel); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; gap: 20px; height: 60px; }
.logo { font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; letter-spacing: .02em; }
.logo span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 18px; margin-left: auto; font-size: 14px; line-height: 1.4; }
.nav a { color: var(--sub); text-decoration: none; }
.nav a:hover { color: var(--ink); }
.nav .cta { color: var(--accent-ink); background: var(--accent); padding: 6px 14px; border-radius: 6px; }
@media (max-width: 640px) { .nav a:not(.cta) { display: none; } }
.site-foot { border-top: 1px solid var(--line); margin-top: 80px; padding: 32px 0 48px; font-size: 13px; color: var(--sub); }
.site-foot .cols { display: flex; flex-wrap: wrap; gap: 24px 48px; }
.site-foot a { color: var(--sub); }
.site-foot ul { list-style: none; margin: 0; padding: 0; }

/* buttons */
.btn { display: inline-block; font: inherit; font-size: 15px; font-weight: 600; padding: 12px 22px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); text-decoration: none; cursor: pointer; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.small { font-size: 13px; padding: 7px 12px; font-weight: 500; }
.btn:disabled { opacity: .5; cursor: default; }

/* hero */
.hero { padding-top: 56px; padding-bottom: 32px; }
.hero h1 { font-size: clamp(26px, 4.4vw, 40px); line-height: 1.4; margin: 0 0 16px; letter-spacing: .01em; }
.hero p.lead { font-size: 17px; color: var(--sub); margin: 0 0 24px; max-width: 640px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.kicker { display: inline-block; font-size: 13px; color: var(--accent); background: var(--accent-soft); padding: 2px 10px; border-radius: 999px; margin-bottom: 14px; }

section.block { padding: 48px 0; }
section.block h2 { font-size: clamp(21px, 3vw, 26px); margin: 0 0 8px; }
section.block p.sub { color: var(--sub); margin: 0 0 24px; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; counter-reset: s; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px; }
.step::before { counter-increment: s; content: counter(s); display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 13px; font-weight: 700; margin-bottom: 8px; }
.step h3 { font-size: 16px; margin: 0 0 4px; }
.step p { margin: 0; font-size: 14px; color: var(--sub); line-height: 1.7; }

/* compare */
table.plain { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; font-size: 14px; }
table.plain th, table.plain td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
table.plain th { background: #faf9f6; font-weight: 600; font-size: 13px; color: var(--sub); }
table.plain tr:last-child td { border-bottom: 0; }
table.plain td.hl { background: var(--accent-soft); font-weight: 600; }
.scroll-x { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.scroll-x table { min-width: 560px; }

/* pricing */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.plan { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 22px; }
.plan.featured { border: 2px solid var(--accent); }
.plan h3 { margin: 0; font-size: 16px; }
.plan .price { font-size: 30px; font-weight: 700; margin: 8px 0 0; }
.plan .price small { display: block; font-size: 13px; font-weight: 400; color: var(--sub); line-height: 1.4; }
.plan ul { padding-left: 18px; margin: 12px 0 0; font-size: 14px; }
.note { font-size: 13px; color: var(--sub); }

/* demo */
.demo { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.demo-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 20px; }
@media (max-width: 820px) { .demo-grid { grid-template-columns: 1fr; } }
.drop { border: 2px dashed var(--line); border-radius: 10px; padding: 28px 16px; text-align: center; color: var(--sub); cursor: pointer; font-size: 14px; }
.drop.over { border-color: var(--accent); color: var(--accent); }
.samples { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; align-items: center; font-size: 13px; color: var(--sub); }
.preview img { width: 100%; border: 1px solid var(--line); border-radius: 6px; margin-top: 12px; background: #fff; }
.result table { width: 100%; border-collapse: collapse; font-size: 14px; }
.result th { text-align: left; font-size: 12px; color: var(--sub); font-weight: 500; border-bottom: 1px solid var(--line); padding: 6px 4px; }
.result td { padding: 7px 4px; border-bottom: 1px solid #eeece7; }
.result tr.flag td { background: var(--warn); }
.result .meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 12px; font-size: 14px; }
.result .meta div span { display: block; font-size: 12px; color: var(--sub); }
.result .empty { color: var(--sub); text-align: center; padding: 40px 8px; font-size: 14px; }
.result .err { color: var(--err); }
.result .after { margin-top: 16px; padding: 14px; background: var(--accent-soft); border-radius: 8px; font-size: 14px; }
.legend { font-size: 12px; color: var(--sub); margin-top: 6px; }
.legend i { display: inline-block; width: 10px; height: 10px; background: var(--warn); border: 1px solid var(--warnline); margin-right: 4px; vertical-align: -1px; }

/* faq */
details { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; margin-bottom: 8px; }
details summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; color: var(--ink); font-size: 15px; }

/* article */
.crumbs { font-size: 13px; color: var(--sub); margin: 24px 0 0; }
.crumbs a { color: var(--sub); }
article h1 { font-size: clamp(24px, 3.6vw, 32px); line-height: 1.45; margin: 12px 0 8px; }
article .updated { font-size: 13px; color: var(--sub); margin: 0 0 24px; }
article h2 { font-size: 21px; margin: 40px 0 8px; padding-top: 8px; border-top: 1px solid var(--line); }
article h3 { font-size: 17px; margin: 28px 0 4px; }
article p, article li { font-size: 16px; }
article .summary { background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--accent); padding: 14px 18px; border-radius: 6px; }
article .summary p { margin: 0; }
article ol li, article ul li { margin: 4px 0; }
article code { background: #efede7; padding: 1px 6px; border-radius: 4px; font-size: 14px; }
article pre { background: #23272b; color: #f2f2f2; padding: 14px; border-radius: 8px; overflow-x: auto; font-size: 13px; line-height: 1.6; }
article .sources { font-size: 13px; color: var(--sub); }
article .cta-box { margin-top: 40px; background: var(--accent-soft); padding: 20px; border-radius: 10px; }
article .cta-box p { margin: 0 0 12px; }
.list-cards { display: grid; gap: 12px; }
.list-cards a { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; color: var(--ink); text-decoration: none; }
.list-cards a strong { display: block; font-size: 16px; }
.list-cards a span { font-size: 14px; color: var(--sub); }
.list-cards a:hover { border-color: var(--accent); }
.draft-banner { background: var(--warn); border: 1px solid var(--warnline); padding: 10px 14px; border-radius: 8px; font-size: 14px; margin: 20px 0; }
.monitor { background: var(--accent-soft); border: 1px solid var(--accent); border-radius: 10px; padding: 14px 18px; margin: 0 0 20px; }
.monitor strong { color: var(--accent); }
.monitor p { margin: 6px 0 0; font-size: 14px; }
.safe { list-style: none; padding: 0; margin: 16px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.safe li { background: var(--panel, #fff); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 8px; padding: 14px 16px; font-size: 14px; }
.safe strong { display: block; color: var(--accent); font-size: 16px; margin-bottom: 4px; }
.kv { display: grid; grid-template-columns: 30% 1fr; border-top: 1px solid var(--line); margin: 20px 0; }
.kv dt, .kv dd { margin: 0; padding: 12px 10px; border-bottom: 1px solid var(--line); }
.kv dt { font-weight: 700; background: var(--accent-soft); }
@media (max-width: 600px) { .kv { grid-template-columns: 1fr; } .kv dt { border-bottom: 0; padding-bottom: 4px; } .kv dd { padding-top: 4px; } }
@media print { .site-head, .site-foot { display: none; } }