/* TerraWatch site — shared design system (mirrors the approved top page).
   White ground, near-black ink, indigo-navy accent, light-weight EN display. */
:root {
  --bg: #fcfcfc; --bg-soft: #f4f5f7;
  --ink: #14161f; --grey: #5c6470; --grey-2: #9aa1ab; --line: #e3e6ea;
  --navy: #1b2559; --navy-deep: #131a40; --teal: #5f9fb0;
  --dark: #0a0d18; --dark-ink: #eef1f7; --dark-grey: #8b93a7; --amber: #c98a2e;
  --en: 'Urbanist', 'Avenir Next', 'Helvetica Neue', sans-serif;
  --jp: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --mono: 'IBM Plex Mono', 'Consolas', monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--jp); font-size: 15.5px; line-height: 2.0;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--navy); outline-offset: 3px; }
img { max-width: 100%; display: block; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 28px; }

/* ---------- nav ---------- */
.top {
  position: fixed; inset: 0 0 auto 0; z-index: 40; height: 68px;
  display: flex; align-items: center;
  background: rgba(252,252,252,0.9); backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .3s;
}
.top.scrolled { border-bottom-color: var(--line); }
.top .wrap { display: flex; align-items: center; gap: 40px; width: 100%; }
.logo { font-family: var(--en); font-weight: 700; font-size: 19px; letter-spacing: .16em; }
.logo b { color: var(--navy); font-weight: 700; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 30px; }
.top nav a {
  font-family: var(--en); font-size: 13px; font-weight: 600; letter-spacing: .1em;
  color: var(--grey); text-transform: uppercase;
}
.top nav a:hover, .top nav a.here { color: var(--ink); }
.top nav a.here { border-bottom: 2px solid var(--navy); padding-bottom: 4px; }
.top .cta { background: var(--navy); color: #fff; padding: 10px 22px; border-radius: 999px; font-size: 12.5px; }
.top .cta:hover { background: var(--navy-deep); color: #fff; }
@media (max-width: 960px) { .top nav a:not(.cta) { display: none; } }

/* ---------- sub-page hero band ---------- */
.page-hero {
  background: var(--dark); color: var(--dark-ink);
  padding: 150px 0 64px;
}
.page-hero .eyebrow { color: var(--teal); }
.page-hero h1 {
  font-family: var(--en); font-weight: 300; font-size: clamp(32px, 5.5vw, 56px);
  line-height: 1.15; letter-spacing: .02em; margin: 0 0 10px; text-wrap: balance;
}
.page-hero h1 strong { font-weight: 600; }
.page-hero .jp { color: #c3cadb; font-weight: 500; font-size: 16px; margin: 14px 0 0; letter-spacing: .05em; }
.page-hero .sub { color: var(--dark-grey); font-size: 14px; max-width: 42em; margin: 14px 0 0; }

/* ---------- shared section chrome ---------- */
section { padding: 96px 0; }
.eyebrow {
  font-family: var(--en); font-weight: 600; font-size: 12px;
  letter-spacing: .32em; text-transform: uppercase; color: var(--teal); margin: 0 0 20px;
}
h2.en {
  font-family: var(--en); font-weight: 300; font-size: clamp(26px, 4vw, 42px);
  line-height: 1.25; letter-spacing: .01em; margin: 0 0 14px; text-wrap: balance;
}
h2.en strong { font-weight: 600; }
.jp-sub { font-weight: 700; font-size: 17px; margin: 0 0 18px; }
.sec-lede { max-width: 44em; color: var(--grey); margin: 0; }
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- prose (long-form pages) ---------- */
.prose { max-width: 760px; }
.prose h2 {
  font-family: var(--en); font-weight: 600; font-size: 22px; letter-spacing: .04em;
  margin: 56px 0 14px; padding-top: 26px; border-top: 1px solid var(--line);
}
.prose h2:first-child { margin-top: 0; border-top: none; padding-top: 0; }
.prose h3 { font-size: 16px; font-weight: 700; margin: 34px 0 10px; }
.prose p, .prose li { font-size: 14.5px; color: var(--grey); }
.prose p b, .prose li b { color: var(--ink); }
.prose ul { padding-left: 1.3em; }
.prose .date { font-family: var(--mono); font-size: 12px; color: var(--grey-2); }

/* ---------- solution blocks ---------- */
.solution {
  display: grid; grid-template-columns: 300px 1fr; gap: 48px;
  padding: 64px 0; border-top: 1px solid var(--line);
}
.solution:first-of-type { border-top: none; }
@media (max-width: 860px) { .solution { grid-template-columns: 1fr; gap: 18px; } }
.solution .head .en-t {
  font-family: var(--en); font-weight: 600; font-size: 12px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--teal); margin: 0 0 8px;
}
.solution .head h2 { font-size: 22px; font-weight: 700; margin: 0 0 12px; line-height: 1.6; }
.solution .head .prob { font-size: 13px; color: var(--grey-2); }
.solution .body p { font-size: 14.5px; color: var(--grey); margin: 0 0 16px; }
.solution .body .feat-list { list-style: none; margin: 20px 0 0; padding: 0; display: grid; gap: 10px; }
.solution .body .feat-list li {
  position: relative; padding: 14px 18px 14px 40px; background: #fff;
  border: 1px solid var(--line); border-radius: 10px; font-size: 13.5px; color: var(--grey);
}
.solution .body .feat-list li::before {
  content: ''; position: absolute; left: 16px; top: 21px; width: 9px; height: 9px;
  border-radius: 50%; background: var(--teal);
}
.solution .body .feat-list b { color: var(--ink); }

/* ---------- data tables ---------- */
.dtable-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
table.dtable { width: 100%; border-collapse: collapse; min-width: 640px; }
.dtable th, .dtable td { text-align: left; padding: 14px 20px; border-top: 1px solid var(--line); font-size: 13.5px; }
.dtable thead th {
  border-top: none; font-family: var(--en); font-size: 11.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--grey-2); font-weight: 600; background: var(--bg-soft);
}
.dtable td { color: var(--grey); }
.dtable td:first-child { color: var(--ink); font-weight: 500; white-space: nowrap; }

/* ---------- gallery ---------- */
.g-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 56px; }
@media (max-width: 900px) { .g-grid { grid-template-columns: 1fr; } }
.g-item { background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.g-item .thumb { display: block; height: 240px; overflow: hidden; background: var(--bg-soft); }
.g-item .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform .4s; }
.g-item:hover .thumb img { transform: scale(1.03); }
.g-item .cap { padding: 18px 22px 20px; }
.g-item .cap .t { font-size: 14px; font-weight: 700; margin: 0 0 4px; }
.g-item .cap .d { font-size: 12px; color: var(--grey-2); margin: 0; }

/* ---------- empty state (news / team) ---------- */
.empty {
  border: 1px dashed var(--line); border-radius: 14px; background: #fff;
  padding: 72px 32px; text-align: center; margin-top: 48px;
}
.empty .en-t { font-family: var(--en); font-weight: 600; font-size: 12px; letter-spacing: .28em; text-transform: uppercase; color: var(--grey-2); margin: 0 0 12px; }
.empty p { color: var(--grey-2); font-size: 13.5px; margin: 0; }

/* ---------- company profile ---------- */
.profile { border: 1px solid var(--line); border-radius: 14px; background: #fff; overflow: hidden; margin-top: 48px; }
.profile dl { display: grid; grid-template-columns: 220px 1fr; margin: 0; }
@media (max-width: 700px) { .profile dl { grid-template-columns: 1fr; } }
.profile dt {
  padding: 18px 26px; background: var(--bg-soft); border-top: 1px solid var(--line);
  font-family: var(--en); font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--grey-2); font-weight: 600; display: flex; align-items: center;
}
.profile dd { margin: 0; padding: 18px 26px; border-top: 1px solid var(--line); font-size: 14px; color: var(--grey); }
.profile dt:first-of-type, .profile dt:first-of-type + dd { border-top: none; }
@media (max-width: 700px) { .profile dd { border-top: none; padding-top: 0; } }
.profile dd b { color: var(--ink); }

/* ---------- CTA band + footer ---------- */
.ctaband { background: var(--navy); color: #fff; text-align: center; padding: 88px 0; }
.ctaband h2 { font-family: var(--en); font-weight: 300; font-size: clamp(26px, 4vw, 42px); margin: 0 0 12px; letter-spacing: .02em; }
.ctaband h2 strong { font-weight: 600; }
.ctaband p { color: #b9c1de; margin: 0 auto 34px; max-width: 40em; font-size: 14px; }
.ctaband .mail {
  display: inline-block; background: #fff; color: var(--navy);
  font-family: var(--mono); font-size: 15px; padding: 16px 38px; border-radius: 999px; font-weight: 500;
}
.ctaband .mail:hover { background: var(--teal); color: #fff; }

footer { background: var(--dark); color: var(--dark-grey); padding: 52px 0 46px; }
footer .cols { display: flex; flex-wrap: wrap; gap: 20px 48px; align-items: baseline; }
footer .logo { color: #fff; font-size: 16px; }
footer .note { font-size: 12px; }
footer .legal { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 22px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); }
footer .legal a { font-size: 11.5px; color: var(--dark-grey); }
footer .legal a:hover { color: #fff; }
footer .sp { margin-left: auto; font-family: var(--en); font-size: 11px; letter-spacing: .14em; }

.btn {
  display: inline-block; font-family: var(--en); font-weight: 600;
  font-size: 13.5px; letter-spacing: .1em; text-transform: uppercase;
  padding: 15px 36px; border-radius: 999px; transition: all .25s;
}
.btn.navy { background: var(--navy); color: #fff; }
.btn.navy:hover { background: var(--navy-deep); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .g-item .thumb img, .g-item:hover .thumb img { transform: none; transition: none; }
}