:root {
  --primary: #0F766E;
  --primary-dark: #0B625B;
  --primary-soft: #ECFDF5;
  --accent: #0284C7;
  --accent-soft: #E0F2FE;
  --heading: #0F172A;
  --body: #334155;
  --sub: #64748B;
  --bg: #FFFFFF;
  --soft-bg: #F8FAFC;
  --border: #E2E8F0;
  --radius-button: 10px;
  --radius-card: 16px;
  --shadow-card: 0 18px 46px rgba(15, 23, 42, .08);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--body); background: var(--bg); font-family: Inter, "Noto Sans JP", system-ui, sans-serif; line-height: 1.75; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92); border-bottom: 1px solid rgba(226,232,240,.8); backdrop-filter: blur(14px); transition: box-shadow .2s ease; }
.site-header.scrolled { box-shadow: 0 8px 28px rgba(15,23,42,.06); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 32px; }
.brand { margin-right: auto; display: inline-flex; align-items: center; }
.brand img { width: 176px; height: auto; }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav > a:not(.btn) { font-size: 14px; font-weight: 600; color: var(--body); }
.site-nav > a:not(.btn):hover { color: var(--primary); }
.menu-button { display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 10px; cursor: pointer; }
.menu-button span { display: block; height: 2px; margin: 5px 0; background: var(--heading); border-radius: 999px; transition: .2s ease; }

.btn { min-height: 50px; padding: 0 22px; border: 1px solid transparent; border-radius: var(--radius-button); display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; font-size: 15px; transition: transform .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #fff; background: var(--primary); box-shadow: 0 8px 20px rgba(15,118,110,.18); }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 10px 24px rgba(15,118,110,.22); }
.btn-secondary { color: var(--primary); background: #fff; border-color: #9BCBC6; }
.btn-secondary:hover { background: var(--primary-soft); border-color: var(--primary); }
.btn-sm { min-height: 40px; padding-inline: 16px; font-size: 13px; }
.btn-white { background: #fff; color: var(--primary); min-width: 160px; }
.btn-white:hover { background: #F0FDFA; }

.eyebrow { display: inline-block; margin-bottom: 14px; color: var(--primary); font-size: 12px; font-weight: 700; letter-spacing: .16em; }
.eyebrow.light { color: #99F6E4; }
h1,h2,h3 { margin: 0; color: var(--heading); font-family: "Noto Sans JP", Inter, sans-serif; line-height: 1.25; }
h1 { font-size: clamp(46px, 5.4vw, 68px); letter-spacing: -.045em; }
h1 span { color: var(--primary); }
h2 { font-size: clamp(32px, 3.8vw, 44px); letter-spacing: -.035em; }
h3 { font-size: 23px; }
p { margin: 0; }

.hero { position: relative; overflow: hidden; padding: 104px 0 92px; background: linear-gradient(180deg,#fff 0%,#fbfefd 100%); }
.hero:before { content:""; position:absolute; width:620px; height:620px; right:-280px; top:-250px; border-radius:50%; background:radial-gradient(circle,rgba(2,132,199,.08),transparent 68%); pointer-events:none; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 68px; align-items: center; }
.hero-copy { margin-top: 24px; max-width: 650px; color: var(--sub); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-note { display:flex; align-items:flex-start; gap:10px; margin-top:24px; color:var(--sub); font-size:13px; }
.hero-note .dot { flex:0 0 8px; width:8px; height:8px; margin-top:8px; border-radius:50%; background:var(--accent); box-shadow:0 0 0 5px rgba(2,132,199,.09); }
.hero-visual { position: relative; padding: 26px 0 18px 30px; }
.visual-glow { position:absolute; border-radius:50%; filter: blur(1px); pointer-events:none; }
.visual-glow-a { width:220px; height:220px; right:0; top:0; background:rgba(15,118,110,.10); }
.visual-glow-b { width:180px; height:180px; left:20px; bottom:0; background:rgba(2,132,199,.08); }
.app-window { position:relative; z-index:2; overflow:hidden; background:#fff; border:1px solid var(--border); border-radius:22px; box-shadow:0 28px 70px rgba(15,23,42,.14); transform:rotate(1deg); }
.app-titlebar { height:54px; padding:0 18px; display:flex; align-items:center; justify-content:space-between; background:#fff; border-bottom:1px solid var(--border); }
.app-brand { display:flex; align-items:center; gap:9px; color:var(--heading); font-weight:700; font-size:13px; }
.app-brand img { width:27px; height:27px; object-fit:contain; }
.window-dots { display:flex; gap:6px; }
.window-dots span { width:8px; height:8px; border-radius:50%; background:#CBD5E1; }
.app-body { display:grid; grid-template-columns:68px 1fr; min-height:420px; }
.app-sidebar { padding:20px 16px; background:#F8FAFC; border-right:1px solid var(--border); display:flex; flex-direction:column; gap:15px; }
.side-pill { width:34px; height:34px; border-radius:10px; background:#E2E8F0; }
.side-pill.active { background:#CCFBF1; box-shadow:inset 0 0 0 1px #99F6E4; }
.side-pill.small { height:12px; margin-top:auto; border-radius:999px; }
.app-content { padding:28px; }
.app-heading-row { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; margin-bottom:18px; }
.app-heading-row small { display:block; color:var(--accent); font-size:9px; font-weight:700; letter-spacing:.14em; }
.app-heading-row strong { display:block; margin-top:2px; color:var(--heading); font-size:20px; }
.status-chip { padding:5px 9px; border-radius:999px; color:#166534; background:#DCFCE7; font-size:10px; font-weight:700; }
.data-card,.mapping-card { border:1px solid var(--border); border-radius:13px; background:#fff; }
.data-card { padding:8px 16px; }
.data-line { min-height:43px; display:grid; grid-template-columns:76px 1fr; gap:10px; align-items:center; border-bottom:1px solid #F1F5F9; font-size:11px; }
.data-line:last-child { border-bottom:0; }
.data-line span { color:var(--sub); }
.data-line b { color:var(--heading); font-weight:600; }
.mapping-card { margin-top:14px; padding:12px; }
.mapping-head { display:grid; grid-template-columns:1fr 1fr; padding:0 8px 7px 25px; color:var(--sub); font-size:9px; }
.mapping-line { display:grid; grid-template-columns:8px 1fr 22px 1fr 16px; gap:7px; align-items:center; min-height:38px; padding:0 8px; border-top:1px solid #F1F5F9; font-size:10px; }
.mapping-line i { width:7px; height:7px; border-radius:50%; background:#5EEAD4; }
.mapping-line em { color:#94A3B8; font-style:normal; }
.mapping-line strong { color:#16A34A; }
.mock-button { width:100%; height:42px; margin-top:16px; border:0; border-radius:9px; background:var(--primary); color:#fff; font-size:11px; font-weight:700; }

.trust-strip { border-top:1px solid var(--border); border-bottom:1px solid var(--border); background:#fff; }
.trust-grid { min-height:110px; display:grid; grid-template-columns:repeat(4,1fr); }
.trust-grid > div { padding:24px 26px; display:flex; flex-direction:column; justify-content:center; border-right:1px solid var(--border); }
.trust-grid > div:first-child { border-left:1px solid var(--border); }
.trust-grid strong { color:var(--primary); font-size:13px; letter-spacing:.05em; }
.trust-grid span { margin-top:3px; color:var(--sub); font-size:13px; }

.section { padding: 96px 0; }
.section-soft { background: var(--soft-bg); }
.section-heading { max-width: 720px; margin-bottom: 42px; }
.section-heading p { margin-top: 14px; color: var(--sub); }
.section-heading.centered { margin-inline:auto; text-align:center; max-width:780px; }
.products-section { padding-top:104px; }
.product-feature { display:grid; grid-template-columns: .92fr 1.08fr; gap:70px; align-items:center; padding:54px; border:1px solid var(--border); border-radius:26px; background:#fff; box-shadow:var(--shadow-card); }
.product-label { display:inline-flex; min-height:30px; padding:0 11px; align-items:center; border-radius:999px; background:var(--accent-soft); color:#0369A1; font-size:12px; font-weight:700; }
.product-copy h3 { margin-top:16px; font-size:clamp(28px,3vw,38px); }
.product-copy > p { margin-top:18px; color:var(--sub); font-size:16px; }
.check-list { list-style:none; padding:0; margin:24px 0 0; display:grid; gap:10px; }
.check-list li { position:relative; padding-left:28px; color:var(--body); font-size:14px; }
.check-list li:before { content:"✓"; position:absolute; left:0; top:0; width:19px; height:19px; border-radius:50%; display:grid; place-items:center; background:#CCFBF1; color:var(--primary); font-size:11px; font-weight:700; }
.product-actions { margin-top:30px; display:flex; flex-wrap:wrap; gap:20px; align-items:center; }
.text-link { color:var(--accent); font-weight:600; font-size:14px; }
.text-link span { display:inline-block; transition:transform .18s ease; }
.text-link:hover span { transform:translateX(3px); }
.product-visual { padding:28px; border-radius:22px; background:linear-gradient(145deg,#ECFDF5,#EFF6FF); }
.browser-card { overflow:hidden; border:1px solid var(--border); border-radius:16px; background:#fff; box-shadow:0 14px 40px rgba(15,23,42,.10); }
.browser-top { height:42px; padding:0 12px; display:flex; align-items:center; gap:6px; border-bottom:1px solid var(--border); }
.browser-top > span { width:7px; height:7px; border-radius:50%; background:#CBD5E1; }
.url-bar { height:24px; margin-left:8px; flex:1; border-radius:7px; background:#F8FAFC; color:#94A3B8; font-size:8px; display:flex; align-items:center; justify-content:center; }
.browser-body { padding:24px; }
.fake-title { width:45%; height:18px; border-radius:5px; background:#CBD5E1; }
.fake-copy { width:70%; height:8px; margin:10px 0 22px; border-radius:99px; background:#E2E8F0; }
.browser-body label { display:block; margin:10px 0 5px; color:var(--sub); font-size:9px; }
.fake-input { height:36px; padding:0 11px; border:1px solid #CBD5E1; border-radius:8px; display:flex; align-items:center; justify-content:space-between; color:var(--heading); font-size:10px; }
.fake-input.filled { border-color:#99F6E4; background:#F0FDFA; }
.fake-input b { color:#16A34A; }
.fake-submit { width:90px; height:34px; margin-top:18px; border-radius:8px; background:#CBD5E1; }

.feature-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.feature-card { padding:32px; background:#fff; border:1px solid var(--border); border-radius:var(--radius-card); transition:transform .18s ease, box-shadow .18s ease; }
.feature-card:hover { transform:translateY(-3px); box-shadow:var(--shadow-card); }
.feature-icon { width:46px; height:46px; margin-bottom:22px; border-radius:12px; display:grid; place-items:center; background:#CCFBF1; color:var(--primary); font-weight:700; font-size:13px; }
.feature-icon.blue { background:var(--accent-soft); color:#0369A1; }
.feature-card p { margin-top:12px; color:var(--sub); font-size:14px; }

.steps-layout { display:grid; grid-template-columns:.8fr 1.2fr; gap:80px; align-items:start; }
.steps-list { list-style:none; padding:0; margin:0; display:grid; gap:12px; }
.steps-list li { display:grid; grid-template-columns:52px 1fr; gap:18px; padding:22px 24px; border:1px solid var(--border); border-radius:var(--radius-card); }
.steps-list li > span { width:42px; height:42px; display:grid; place-items:center; border-radius:12px; background:var(--primary); color:#fff; font-weight:700; }
.steps-list strong { color:var(--heading); font-size:17px; }
.steps-list p { margin-top:6px; color:var(--sub); font-size:13px; }

.faq-layout { display:grid; grid-template-columns:.72fr 1.28fr; gap:78px; align-items:start; }
.faq-list { display:grid; gap:10px; }
details { background:#fff; border:1px solid var(--border); border-radius:14px; overflow:hidden; }
summary { cursor:pointer; position:relative; padding:20px 54px 20px 22px; color:var(--heading); font-weight:600; font-size:14px; list-style:none; }
summary::-webkit-details-marker { display:none; }
summary:after { content:"+"; position:absolute; right:20px; top:50%; transform:translateY(-50%); color:var(--primary); font-size:22px; font-weight:400; }
details[open] summary:after { content:"−"; }
details p { padding:0 22px 20px; color:var(--sub); font-size:13px; }

.final-cta { padding-top:72px; }
.cta-card { padding:50px 56px; display:flex; align-items:center; justify-content:space-between; gap:40px; border-radius:24px; background:linear-gradient(135deg,#0F766E,#115E59); box-shadow:0 20px 50px rgba(15,118,110,.18); }
.cta-card h2 { color:#fff; font-size:clamp(30px,3.7vw,42px); }
.cta-card p { margin-top:10px; color:#CCFBF1; }

.site-footer { margin-top:16px; padding:64px 0 22px; border-top:1px solid var(--border); background:#fff; }
.footer-top { display:grid; grid-template-columns:1fr 1.2fr; gap:80px; padding-bottom:44px; }
.footer-brand img { width:190px; }
.footer-brand p { margin-top:15px; color:var(--sub); font-size:13px; }
.footer-columns { display:grid; grid-template-columns:repeat(3,1fr); gap:34px; }
.footer-columns > div { display:flex; flex-direction:column; gap:9px; }
.footer-columns strong { margin-bottom:5px; color:var(--heading); font-size:13px; }
.footer-columns a { color:var(--sub); font-size:12px; }
.footer-columns a:hover { color:var(--primary); }
.footer-bottom { padding-top:20px; border-top:1px solid var(--border); display:flex; justify-content:space-between; gap:20px; color:#94A3B8; font-size:11px; }

.reveal { opacity:0; transform:translateY(14px); transition:opacity .55s ease, transform .55s ease; }
.reveal.is-visible { opacity:1; transform:none; }

@media (max-width: 960px) {
  .hero-grid,.product-feature,.steps-layout,.faq-layout,.footer-top { grid-template-columns:1fr; }
  .hero-grid { gap:42px; }
  .hero-visual { max-width:680px; margin-inline:auto; width:100%; padding-left:0; }
  .trust-grid { grid-template-columns:repeat(2,1fr); }
  .trust-grid > div:nth-child(3) { border-left:1px solid var(--border); border-top:1px solid var(--border); }
  .trust-grid > div:nth-child(4) { border-top:1px solid var(--border); }
  .feature-grid { grid-template-columns:1fr; }
  .product-feature { gap:40px; padding:40px; }
  .steps-layout,.faq-layout { gap:36px; }
  .footer-top { gap:40px; }
}

@media (max-width: 760px) {
  .header-inner { min-height:68px; }
  .brand img { width:150px; }
  .menu-button { display:block; }
  .site-nav { position:fixed; inset:68px 0 auto; padding:20px; background:#fff; border-bottom:1px solid var(--border); box-shadow:0 18px 40px rgba(15,23,42,.08); display:none; flex-direction:column; align-items:stretch; gap:0; }
  .site-nav.open { display:flex; }
  .site-nav > a:not(.btn) { padding:13px 4px; border-bottom:1px solid #F1F5F9; }
  .nav-cta { margin-top:14px; }
  .hero { padding:72px 0 64px; }
  .section { padding:74px 0; }
  .trust-grid { grid-template-columns:1fr 1fr; }
  .app-body { min-height:360px; grid-template-columns:54px 1fr; }
  .app-sidebar { padding-inline:10px; }
  .app-content { padding:20px; }
  .product-feature { padding:28px; border-radius:20px; }
  .product-visual { padding:16px; }
  .cta-card { padding:38px 30px; flex-direction:column; align-items:flex-start; }
  .footer-columns { grid-template-columns:1fr 1fr; }
}

@media (max-width: 520px) {
  .container { width:min(calc(100% - 28px), var(--container)); }
  h1 { font-size:41px; }
  h2 { font-size:30px; }
  .hero-copy { font-size:16px; }
  .hero-actions { flex-direction:column; align-items:stretch; }
  .hero-actions .btn { width:100%; }
  .hero-visual { display:none; }
  .trust-grid { grid-template-columns:1fr; }
  .trust-grid > div { border-left:1px solid var(--border) !important; border-top:1px solid var(--border); }
  .trust-grid > div:first-child { border-top:0; }
  .product-actions { align-items:flex-start; flex-direction:column; }
  .product-actions .btn { width:100%; }
  .product-visual { display:none; }
  .steps-list li { grid-template-columns:44px 1fr; padding:18px; }
  .footer-columns { grid-template-columns:1fr; }
  .footer-bottom { flex-direction:column; }
}