/* ============================================================
   FUTURIST — futurist.bet
   予測市場インテリジェンス
   ============================================================ */

:root {
  --bg: #0a0e14;
  --bg-2: #0f141d;
  --bg-3: #141b26;
  --line: #1e2836;
  --text: #dce3ec;
  --text-2: #93a1b3;
  --text-3: #5c6b7e;
  --accent: #3ee6a8;
  --accent-dim: #2aa87c;
  --amber: #f0b45a;
  --mono: "IBM Plex Mono", "Noto Sans Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --maxw: 1080px;
  --maxw-article: 720px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.14;
  pointer-events: none;
  z-index: 0;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 4px; }

::selection { background: var(--accent); color: #06251a; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ---------- header ---------- */
header.site {
  border-bottom: 1px solid var(--line);
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 50;
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--mono);
  font-weight: 700; font-size: 18px; letter-spacing: 0.08em;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand .tld { color: var(--accent); }
.brand .ja {
  font-family: var(--sans); font-size: 11px; font-weight: 400;
  color: var(--text-3); letter-spacing: 0.2em;
}
nav.global { display: flex; gap: 26px; font-size: 13px; }
nav.global a { color: var(--text-2); font-family: var(--mono); letter-spacing: 0.05em; }
nav.global a:hover { color: var(--accent); text-decoration: none; }
nav.global .soon {
  color: var(--text-3); cursor: default;
}
nav.global .soon:hover { color: var(--text-3); }
nav.global .soon small { color: var(--accent-dim); font-size: 9px; vertical-align: super; margin-left: 2px; }

/* ---------- notice ribbon ---------- */
.ribbon {
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  font-size: 11.5px; color: var(--text-3);
  text-align: center; padding: 7px 16px;
  line-height: 1.6;
}

/* ---------- hero ---------- */
.hero { padding: 110px 0 90px; border-bottom: 1px solid var(--line); }
.hero .kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.35em;
  color: var(--accent); margin-bottom: 28px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(34px, 6vw, 62px);
  font-weight: 600; line-height: 1.35; letter-spacing: 0.04em;
  margin-bottom: 30px;
}
.hero .sub {
  color: var(--text-2); font-size: 16.5px; max-width: 640px; margin-bottom: 14px;
}
.hero .sub-en {
  font-family: var(--mono); font-size: 12px; color: var(--text-3); letter-spacing: 0.12em;
}
.hero .cta { margin-top: 44px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 30px;
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em;
  border: 1px solid var(--accent); color: var(--accent);
  transition: background 0.2s, color 0.2s;
}
.btn:hover { background: var(--accent); color: #06251a; text-decoration: none; }
.btn.ghost { border-color: var(--line); color: var(--text-2); }
.btn.ghost:hover { background: var(--bg-3); color: var(--text); }

/* ---------- sections ---------- */
section.block { padding: 80px 0; border-bottom: 1px solid var(--line); }
.sec-label {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.3em;
  color: var(--accent); margin-bottom: 14px;
}
h2.sec-title {
  font-family: var(--serif); font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 600; line-height: 1.5; margin-bottom: 40px; letter-spacing: 0.03em;
}

/* products */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 820px) { .grid3 { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-2); border: 1px solid var(--line); padding: 34px 30px;
  display: flex; flex-direction: column; gap: 14px;
  transition: border-color 0.2s;
}
.card:hover { border-color: #2c3b50; }
.card .num { font-family: var(--mono); font-size: 12px; color: var(--text-3); letter-spacing: 0.2em; }
.card h3 { font-size: 19px; font-weight: 700; letter-spacing: 0.05em; }
.card h3 .en { display: block; font-family: var(--mono); font-size: 11px; color: var(--accent-dim); font-weight: 400; letter-spacing: 0.15em; margin-top: 6px; }
.card p { font-size: 14px; color: var(--text-2); line-height: 1.95; }
.card .status { margin-top: auto; font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; }
.status.live { color: var(--accent); }
.status.dev { color: var(--amber); }
.status.soon { color: var(--text-3); }

/* principles */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 820px) { .principles { grid-template-columns: 1fr; } }
.principles div { background: var(--bg); padding: 30px 28px; }
.principles h4 { font-family: var(--mono); font-size: 13px; color: var(--accent); margin-bottom: 12px; letter-spacing: 0.08em; }
.principles p { font-size: 13.5px; color: var(--text-2); line-height: 1.95; }

/* article list */
.article-list { display: flex; flex-direction: column; }
.article-item {
  display: block; padding: 30px 8px; border-top: 1px solid var(--line);
  color: var(--text); transition: background 0.15s;
}
.article-item:last-child { border-bottom: 1px solid var(--line); }
.article-item:hover { background: var(--bg-2); text-decoration: none; }
.article-item .meta { font-family: var(--mono); font-size: 11.5px; color: var(--text-3); letter-spacing: 0.1em; margin-bottom: 10px; }
.article-item .meta .cat { color: var(--accent-dim); margin-right: 14px; }
.article-item h3 { font-family: var(--serif); font-size: 21px; font-weight: 600; line-height: 1.6; margin-bottom: 8px; }
.article-item p { font-size: 13.5px; color: var(--text-2); }

/* ---------- article page ---------- */
.article-wrap { max-width: var(--maxw-article); margin: 0 auto; padding: 70px 24px 40px; position: relative; z-index: 1; }
.article-wrap .breadcrumbs { font-family: var(--mono); font-size: 11.5px; color: var(--text-3); margin-bottom: 34px; letter-spacing: 0.08em; }
.article-wrap .breadcrumbs a { color: var(--text-3); }
.article-wrap .breadcrumbs a:hover { color: var(--accent); }
article h1 {
  font-family: var(--serif); font-size: clamp(26px, 4.4vw, 38px);
  font-weight: 600; line-height: 1.6; letter-spacing: 0.03em; margin-bottom: 20px;
}
article .byline {
  font-family: var(--mono); font-size: 12px; color: var(--text-3);
  letter-spacing: 0.1em; padding-bottom: 34px; margin-bottom: 44px;
  border-bottom: 1px solid var(--line);
}
article h2 {
  font-family: var(--serif); font-size: 23px; font-weight: 600; line-height: 1.6;
  margin: 60px 0 22px; padding-left: 16px; border-left: 3px solid var(--accent);
}
article p { margin-bottom: 26px; font-size: 16px; line-height: 2.1; color: var(--text); }
article ul { margin: 0 0 26px 1.4em; }
article li { margin-bottom: 10px; font-size: 15.5px; color: var(--text); }
article strong { color: #fff; }
article .lead { color: var(--text-2); font-size: 16px; }
article .note { font-size: 13px; color: var(--text-3); }

.disclaimer-box {
  margin: 60px 0 0; padding: 26px 28px;
  background: var(--bg-2); border: 1px solid var(--line);
  font-size: 12.5px; color: var(--text-3); line-height: 2;
}
.disclaimer-box b { color: var(--text-2); }

/* ---------- static pages ---------- */
.page-wrap { max-width: var(--maxw-article); margin: 0 auto; padding: 70px 24px 40px; position: relative; z-index: 1; }
.page-wrap h1 { font-family: var(--serif); font-size: 32px; font-weight: 600; margin-bottom: 44px; letter-spacing: 0.04em; }
.page-wrap h2 { font-family: var(--serif); font-size: 21px; font-weight: 600; margin: 52px 0 18px; padding-left: 14px; border-left: 3px solid var(--accent); line-height: 1.6; }
.page-wrap p { margin-bottom: 22px; font-size: 15px; line-height: 2.05; color: var(--text-2); }
.page-wrap li { margin-bottom: 12px; font-size: 14.5px; color: var(--text-2); line-height: 1.95; }
.page-wrap ul, .page-wrap ol { margin: 0 0 22px 1.4em; }
.page-wrap strong { color: var(--text); }

/* ---------- footer ---------- */
footer.site { padding: 56px 0 44px; }
footer.site .disclaimer {
  max-width: 860px; font-size: 12px; color: var(--text-3); line-height: 2;
  border: 1px solid var(--line); background: var(--bg-2);
  padding: 20px 24px; margin-bottom: 36px;
}
footer.site .disclaimer b { color: var(--text-2); letter-spacing: 0.05em; }
footer.site .cols {
  display: flex; justify-content: space-between; align-items: flex-end;
  flex-wrap: wrap; gap: 20px;
}
footer.site .fnav { display: flex; gap: 22px; font-family: var(--mono); font-size: 12px; }
footer.site .fnav a { color: var(--text-3); }
footer.site .fnav a:hover { color: var(--accent); }
footer.site .copy { font-family: var(--mono); font-size: 11.5px; color: var(--text-3); letter-spacing: 0.06em; }
footer.site .copy .tag { display: block; margin-bottom: 6px; color: var(--text-2); }

@media (max-width: 600px) {
  nav.global { gap: 16px; font-size: 11px; }
  .hero { padding: 70px 0 60px; }
}