@font-face { font-family: "Manrope"; src: url(/assets/manrope.woff2) format("woff2"); font-weight: 400 800; font-display: swap; }

:root {
  --accent: #0F5E73;
  --accent-ink: #0B4A5B;
  --tint: #E7F0F2;
  --bg: #F7F7F4;
  --surface: #FFFFFF;
  --alt: #EFF1EE;
  --ink: #111418;
  --muted: #5B6470;
  --line: #E1E4E0;
  --on-accent: #FFFFFF;
  --r: 14px;
  --max: 1160px;
  --sans: "Manrope", "Segoe UI", system-ui, -apple-system, sans-serif;
  --jp: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", "Meiryo", "Noto Sans JP", sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; color: var(--ink); background: var(--bg);
  font-family: var(--sans); font-size: 16px; line-height: 1.7; -webkit-font-smoothing: antialiased;
}
html[lang="ja"] body { font-family: var(--sans), var(--jp); line-height: 1.9; }
:lang(ja) { font-family: var(--sans), var(--jp); }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-ink); }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0; letter-spacing: -0.015em; font-weight: 800; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 780px; }
section { scroll-margin-top: 72px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 14px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.kicker { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }
.head { max-width: 720px; margin: 0 0 40px; }
.head h2, .about h2, .contact h2 { font-size: clamp(30px, 5vw, 48px); }
.head p { color: var(--muted); margin: 14px 0 0; }

/* header */
.site-header { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 18px; }
.brand { display: inline-flex; align-items: center; color: var(--ink); text-decoration: none; }
.logo { height: 28px; width: auto; display: block; }
.logo .lm { fill: var(--accent); }
.nav { display: flex; align-items: center; gap: 26px; font-size: 15px; font-weight: 600; }
.nav a { color: var(--ink); text-decoration: none; }
.nav a:hover { color: var(--accent); }
.nav .lang { border: 1.5px solid var(--line); border-radius: 999px; padding: 4px 14px; }
.menu-btn { display: none; width: 44px; height: 44px; background: none; border: 1px solid var(--line); border-radius: 12px; cursor: pointer; padding: 12px 11px; flex-direction: column; justify-content: space-between; }
.menu-btn span { display: block; height: 2px; background: var(--ink); border-radius: 2px; }

/* buttons */
.btn { display: inline-block; background: var(--accent); color: var(--on-accent) !important; text-decoration: none; font: inherit; font-weight: 700; font-size: 15px; padding: 14px 26px; border-radius: 10px; border: 0; cursor: pointer; transition: filter .15s; }
.btn:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: #fff !important; box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.75); }
.btn-line { background: transparent; color: var(--accent) !important; box-shadow: inset 0 0 0 1.5px var(--accent); }

/* hero */
.hero { position: relative; min-height: min(78vh, 720px); display: flex; align-items: flex-end; color: #fff; overflow: hidden; background: #10232B; }
.hero-img, .hero-img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8,20,26,.25) 0%, rgba(8,20,26,.55) 45%, rgba(8,20,26,.88) 100%); }
.hero-inner { position: relative; z-index: 1; padding-top: 120px; padding-bottom: 64px; width: 100%; }
.hero .kicker { color: #BFE3EC; }
.hero h1 { font-size: clamp(32px, 5.4vw, 62px); max-width: 19ch; letter-spacing: -0.025em; }
.hero .lead { font-size: clamp(16px, 2vw, 19px); max-width: 640px; margin: 22px 0 30px; color: rgba(255,255,255,.9); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* services */
.services { padding: 96px 0; }
.areas { display: grid; grid-template-columns: 1fr; gap: 14px; }
.area { position: relative; display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 26px 24px; text-decoration: none; color: var(--ink); transition: border-color .15s, transform .15s; }
.area:hover { border-color: var(--accent); transform: translateY(-2px); color: var(--ink); }
.area h3 { font-size: 20px; margin-top: 16px; }
.area .sub { display: block; font-size: 13px; color: var(--muted); font-weight: 600; margin-top: 2px; }
.area p { color: var(--muted); font-size: 14.5px; margin: 10px 0 0; }
.area-num { position: absolute; top: 22px; right: 22px; font-size: 13px; font-weight: 700; color: var(--muted); }
.icon { width: 52px; height: 52px; }
.icon .i-bg { fill: var(--tint); }
.icon .i-ln { stroke: var(--ink); }
.icon .i-fl { fill: var(--ink); }
.icon .i-ac { fill: var(--accent); }
.icon .i-acs { stroke: var(--accent); }

/* about */
.about { padding: 96px 0; background: var(--alt); }
.about-grid { display: grid; gap: 40px; align-items: center; }
.about-img img { border-radius: var(--r); aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.about h2 { margin-bottom: 22px; }
.about p { color: var(--muted); }
.company { margin-top: 28px; padding: 22px 24px; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 var(--r) var(--r) 0; }
.company h3 { font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.company p { margin: 0; color: var(--ink); line-height: 1.65; }

/* business sections */
.biz { padding: 96px 0; }
.biz.alt { background: var(--alt); }
.biz-head { display: grid; grid-template-columns: auto 1fr; gap: 6px 22px; align-items: start; margin-bottom: 40px; max-width: 860px; }
.num { font-size: clamp(44px, 8vw, 80px); font-weight: 800; line-height: .9; color: var(--accent); letter-spacing: -0.04em; }
.biz-head h2 { font-size: clamp(30px, 5vw, 48px); }
.biz-head h2 small { display: block; font-size: 15px; color: var(--muted); font-weight: 600; letter-spacing: 0; margin-top: 6px; }
.biz-head p { color: var(--muted); margin: 14px 0 0; font-size: 17px; }
.items { display: grid; gap: 22px; grid-template-columns: 1fr; }
.item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; display: flex; flex-direction: column; }
.item-img img { aspect-ratio: 3 / 2; object-fit: cover; width: 100%; }
.item-body { padding: 22px 22px 8px; }
.item h4 { font-size: 19px; margin-bottom: 10px; }
.item h4 span { display: block; font-size: 13px; color: var(--muted); font-weight: 600; margin-top: 3px; letter-spacing: 0; }
.item p { color: var(--muted); font-size: 15px; }
.item-links { font-weight: 600; font-size: 14.5px !important; }

/* testimonial */
.voice { padding: 96px 0; }
.quote { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 32px 26px; display: grid; gap: 20px; max-width: 900px; }
.quote img { width: 88px; height: 88px; border-radius: 50%; object-fit: cover; }
.quote blockquote { margin: 0; font-size: 17px; }
.quote figcaption b { display: block; }
.quote figcaption span { color: var(--muted); font-size: 14px; }

/* contact */
.contact { padding: 96px 0; background: var(--alt); }
.contact-grid { display: grid; gap: 40px; }
.contact p { color: var(--muted); }
.info { display: grid; grid-template-columns: auto 1fr; gap: 10px 22px; margin: 26px 0; }
.info dt { font-weight: 700; font-size: 14px; }
.info dd { margin: 0; }
.notes h3 { font-size: 16px; margin: 22px 0 6px; }
.at { font-size: .9em; }
.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 26px 22px; display: grid; gap: 16px; align-content: start; }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: 14px; }
.form em { font-style: normal; color: var(--accent); font-weight: 600; font-size: 12px; }
.form input, .form select, .form textarea { font: inherit; font-weight: 400; font-size: 16px; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; width: 100%; }
.form textarea { resize: vertical; }
.row2 { display: grid; gap: 16px; }
.hp { position: absolute; left: -9999px; }
.form-status { margin: 0; min-height: 1.5em; font-weight: 600; }

/* documents (apps pages) */
.doc { padding: 56px 0 96px; }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 36px; }
.crumbs a { color: var(--muted); }
.doc h1 { font-size: clamp(34px, 6vw, 56px); margin-bottom: 18px; }
.doc .lead { font-size: 18px; color: var(--muted); }
.prose { margin-top: 32px; }
.prose h2 { font-size: 22px; margin: 44px 0 14px; }
.prose h3 { font-size: 18px; margin: 26px 0 8px; }
.prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: .6em; }
.prose .meta { color: var(--muted); font-size: 14px; }
.prose .note { font-size: 14px; background: var(--tint); padding: 12px 16px; border-radius: 10px; }
.link-list { list-style: none; padding: 0 !important; }
.link-list li { padding: 14px 0; border-bottom: 1px solid var(--line); margin: 0; }
.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { font-weight: 700; cursor: pointer; }
.faq p { margin: 10px 0 0; color: var(--muted); }
.app-list { display: grid; gap: 16px; margin-bottom: 30px; }
.app-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; }

/* footer */
.site-footer { background: #0B1114; color: #C9D1D6; padding: 64px 0 40px; font-size: 14.5px; }
.site-footer .logo { color: #fff; }
.site-footer .logo .lm { fill: #6FC2D6; }
.site-footer a { color: #E8ECEF; }
.f-grid { display: grid; gap: 32px; margin-bottom: 36px; }
.f-co p { margin: 18px 0 0; line-height: 1.7; }
.f-nav { display: grid; gap: 8px; align-content: start; }
.f-nav b { color: #fff; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 4px; }
.f-nav a { text-decoration: none; }
.f-nav a:hover { text-decoration: underline; }
.f-nav a[aria-current] { color: #6FC2D6; }
.small { font-size: 12.5px; color: #8E99A1; margin: 6px 0 0; }

/* ---------- tablet / desktop ---------- */
@media (min-width: 640px) {
  .areas { grid-template-columns: repeat(2, 1fr); }
  .items { grid-template-columns: repeat(2, 1fr); }
  .items-1 { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr 1fr; }
  .quote { grid-template-columns: 88px 1fr; padding: 40px; }
  .quote figcaption { grid-column: 2; }
  .f-grid { grid-template-columns: 2fr 1fr 1fr; }
}
@media (min-width: 960px) {
  .wrap { padding: 0 32px; }
  .areas { grid-template-columns: repeat(4, 1fr); }
  .area { padding: 26px 20px; }
  .items-3 { grid-template-columns: repeat(3, 1fr); }
  .items-2 { grid-template-columns: repeat(2, 1fr); max-width: 860px; }
  .items-1 { grid-template-columns: 1fr; max-width: 860px; }
  .items-1 .item { flex-direction: row; }
  .items-1 .item-img { flex: 0 0 46%; }
  .items-1 .item-img img { height: 100%; aspect-ratio: auto; min-height: 260px; }
  .items-1 .item-body { padding: 30px 30px 18px; align-self: center; }
  .items-4 { grid-template-columns: repeat(4, 1fr); }
  .about-grid { grid-template-columns: 1fr 1fr; gap: 64px; }
  .contact-grid { grid-template-columns: 1fr 1.1fr; gap: 64px; }
  .services, .about, .biz, .voice, .contact { padding: 128px 0; }
  .hero-inner { padding-bottom: 96px; }
}
@media (max-width: 899px) {
  .menu-btn { display: flex; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 18px; }
  .nav.open { display: flex; }
  .nav a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .nav .lang { border: 0; border-radius: 0; padding: 13px 0; }
}