:root {
  --teal: #12a8a6;
  --teal-dark: #0b7d7b;
  --plum: #5b2a86;
  --magenta: #c2197b;
  --ink: #1d1d22;
  --ink-soft: #4a4a55;
  --paper: #fbfaf7;
  --card: #ffffff;
  --line: #e6e2da;
  --radius: 14px;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
:lang(en) body, body:lang(en) { line-height: 1.7; }
a { color: var(--teal-dark); }
a:hover { color: var(--magenta); }
img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand img { height: 44px; width: auto; }
.nav { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 500; }
.nav a:hover { color: var(--magenta); }
.nav .lang {
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px;
  font-size: 13px; color: var(--ink-soft);
}
.menu-toggle { display: none; }

/* hero */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 0 88px;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(194, 25, 123, 0.16), transparent 60%),
    radial-gradient(700px 380px at -10% 110%, rgba(18, 168, 166, 0.20), transparent 60%),
    var(--paper);
}
.hero .eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--teal-dark); font-weight: 700; margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 60px); line-height: 1.25; margin: 0 0 18px; font-weight: 800;
  background: linear-gradient(90deg, var(--plum), var(--magenta) 55%, var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: clamp(16px, 2.2vw, 19px); color: var(--ink-soft); max-width: 640px; margin: 0 0 30px; }
.hero .facts { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: 13px; padding: 6px 14px; border-radius: 999px; background: var(--card);
  border: 1px solid var(--line); color: var(--ink-soft);
}
.hero-mark {
  position: absolute; right: -60px; bottom: -80px; width: 360px; height: 360px; border-radius: 50%;
  background: conic-gradient(from 200deg, var(--teal), var(--plum), var(--magenta), var(--teal));
  opacity: .12; filter: blur(2px);
}

/* sections */
section { padding: 80px 0; scroll-margin-top: 68px; }
section + section { border-top: 1px solid var(--line); }
.section-title { display: flex; align-items: baseline; gap: 14px; margin: 0 0 34px; }
.section-title h2 { font-size: clamp(24px, 3.4vw, 32px); margin: 0; font-weight: 800; }
.section-title span { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--magenta); font-weight: 700; }

.about { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: start; }
.about p { margin: 0 0 1.2em; }
.mission {
  background: linear-gradient(160deg, var(--plum), #3f1d63);
  color: #fff; border-radius: var(--radius); padding: 32px 30px;
}
.mission h3 { margin: 0 0 12px; font-size: 18px; color: #ffd5ec; }
.mission ul { margin: 0; padding-left: 1.1em; }
.mission li { margin: .35em 0; }

h3.sub { font-size: 18px; margin: 0 0 12px; }
ol.plain-list { margin: 0 0 1.2em; padding-left: 1.4em; }
ol.plain-list li { margin: .5em 0; padding-left: .2em; }
ol.plain-list li::marker { color: var(--magenta); font-weight: 800; }
p.note {
  margin: 0; padding: 14px 16px; border-left: 4px solid var(--teal); background: #eef8f7;
  border-radius: 0 10px 10px 0; font-size: 15px; color: var(--ink-soft);
}
p.source { margin: 28px 0 0; font-size: 12.5px; color: var(--ink-soft); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px 24px; position: relative;
}
.card::before {
  content: ""; position: absolute; left: 24px; top: 0; width: 44px; height: 4px; border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, var(--teal), var(--magenta));
}
.card .num { font-size: 12px; color: var(--teal-dark); font-weight: 700; letter-spacing: .1em; }
.card h3 { margin: 6px 0 10px; font-size: 18px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 15px; }

.profile { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
dl.facts-list { margin: 0; display: grid; grid-template-columns: 9.5em 1fr; border-top: 1px solid var(--line); }
dl.facts-list dt, dl.facts-list dd { padding: 14px 0; border-bottom: 1px solid var(--line); margin: 0; }
dl.facts-list dt { color: var(--ink-soft); font-size: 14px; font-weight: 700; }
.charity-box {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
}
.charity-box h3 { margin: 0 0 10px; font-size: 17px; }
.charity-box p { margin: 0 0 1em; color: var(--ink-soft); font-size: 15px; }
.charity-box .reg { font-size: 30px; font-weight: 800; color: var(--teal-dark); letter-spacing: .04em; margin: 4px 0 12px; }

.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; }
.contact-info p { margin: 0 0 .6em; }
form.contact-form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 700; margin-bottom: 6px; }
.field label .req { color: var(--magenta); margin-left: 4px; font-weight: 700; }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 15px; padding: 11px 13px; border: 1px solid #d6d1c7; border-radius: 10px; background: #fff;
}
.field input:focus, .field textarea:focus { outline: 2px solid var(--teal); outline-offset: 1px; border-color: transparent; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.btn {
  display: inline-block; border: 0; cursor: pointer; font: inherit; font-weight: 700; font-size: 15px;
  padding: 12px 26px; border-radius: 999px; color: #fff;
  background: linear-gradient(90deg, var(--plum), var(--magenta));
}
.btn:hover { filter: brightness(1.08); }
.form-note { font-size: 13px; color: var(--ink-soft); margin-top: 12px; }
.form-status { margin-top: 12px; font-weight: 700; }

/* footer */
.site-footer { background: var(--ink); color: #c9c9d1; padding: 40px 0; font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.site-footer a { color: #fff; }

@media (max-width: 860px) {
  .about, .profile, .contact { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav a:not(.lang) { display: none; }
  .cards { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
  .hero { padding: 64px 0 56px; }
  dl.facts-list { grid-template-columns: 1fr; }
  dl.facts-list dt { border-bottom: 0; padding-bottom: 0; }
  .row2 { grid-template-columns: 1fr; }
}