@charset "utf-8";

/* ===== 色とサイズのもと ===== */
:root {
  --green: #2f6b36;
  --paper: #f4f2ec;
  --sumi: #16150f;
  --sumi-soft: #5f5c4e;
  --rule: #cdc8b7;
  --rule-thin: #e0dcd0;

  --bar-h: 78px;
  --pad-x: clamp(24px, 6.5vw, 130px);

  --jp: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --display: "Instrument Serif", var(--jp);
  --mono: "Chivo Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--bar-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--sumi);
  font-family: var(--jp);
  font-weight: 400;
  line-height: 1.95;
  letter-spacing: .04em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 紙のざらつき。上から薄くかけて、のっぺりさせない */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: .3;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--sumi);
  color: var(--paper);
  padding: 12px 20px;
  z-index: 100;
}
.skip:focus { left: 0; }

:focus-visible {
  outline: 1px solid var(--green);
  outline-offset: 5px;
}

/* 等幅の小さいラベル類 */
.bar__nav a,
.hero__name,
.svc__num,
.svc__en,
.foot__nav a,
.foot__copy {
  font-family: var(--mono);
  font-weight: 400;
  letter-spacing: .2em;
  text-transform: uppercase;
}

/* ===== 上のバー ===== */
.bar {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--bar-h);
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .4s ease, border-color .4s ease;
}

.bar.is-stuck {
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--rule);
}

/* ヒーローの大きいロゴと重なるので、スクロールするまでは隠しておく */
.bar__logo {
  display: block;
  line-height: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity .4s ease, visibility .4s;
}

.bar.is-stuck .bar__logo { opacity: 1; visibility: visible; }

.bar__logo img { width: auto; height: 19px; }

.bar__nav {
  display: flex;
  gap: clamp(24px, 3.6vw, 52px);
  font-size: 10px;
}

.bar__nav a {
  position: relative;
  padding: 8px 0;
  text-decoration: none;
  color: var(--sumi-soft);
  transition: color .3s ease;
}

.bar__nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .5s cubic-bezier(.19, 1, .22, 1);
}

.bar__nav a:hover,
.bar__nav a.is-here { color: var(--sumi); }

.bar__nav a:hover::after,
.bar__nav a.is-here::after { transform: scaleX(1); transform-origin: left; }

/* ===== ヒーロー ===== */
.hero {
  min-height: 100svh;
  padding: calc(var(--bar-h) + 6vh) var(--pad-x) 13vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__inner { text-align: center; }

.hero__logo { margin: 0; }

.hero__logo img {
  width: min(420px, 62vw);
  margin: 0 auto;
  animation: settle 1.6s cubic-bezier(.19, 1, .22, 1) both;
}

.hero__name {
  margin: 46px 0 0;
  font-size: 10px;
  color: var(--sumi-soft);
  text-indent: .2em;
  animation: settle 1.6s cubic-bezier(.19, 1, .22, 1) .35s both;
}

@keyframes settle {
  from { opacity: 0; transform: translateY(18px); filter: blur(6px); }
  to   { opacity: 1; transform: none; filter: none; }
}

/* ===== 中身のブロック（左に見出し、右に本文） ===== */
.block {
  padding: clamp(74px, 11vh, 140px) var(--pad-x);
  display: grid;
  gap: clamp(32px, 4vw, 60px);
  grid-template-columns: minmax(180px, .85fr) minmax(0, 3fr);
  align-items: start;
  border-top: 1px solid var(--rule);
}

.block__label { position: sticky; top: calc(var(--bar-h) + 48px); }

.block__title {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0;
}

.block__body { display: grid; }

/* 事業内容（罫線で区切ったリスト） */
.svc {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 0 20px;
  padding: clamp(24px, 2.8vw, 34px) 0;
  border-bottom: 1px solid var(--rule-thin);
}
.svc:first-child { padding-top: 4px; }
.svc:last-child { border-bottom: 0; padding-bottom: 0; }

.svc__num {
  margin: 0;
  font-size: 10px;
  line-height: 2.9;
  color: var(--green);
}

.svc__name {
  margin: 0;
  font-size: clamp(1rem, 1.45vw, 1.12rem);
  font-weight: 600;
  line-height: 1.75;
  letter-spacing: .06em;
}

.svc__en {
  margin: 9px 0 0;
  font-size: 9px;
  color: var(--sumi-soft);
}

/* 会社概要 */
.facts { margin: 0; }

.facts__row {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 4px 32px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule-thin);
}
.facts__row:first-child { border-top: 1px solid var(--rule-thin); }

.facts dt {
  font-size: .72rem;
  line-height: 2.5;
  letter-spacing: .14em;
  color: var(--sumi-soft);
}

.facts dd {
  margin: 0;
  font-size: .88rem;
  line-height: 2;
  letter-spacing: .06em;
}

/* ===== フッター ===== */
.foot {
  padding: clamp(64px, 9vh, 108px) var(--pad-x) 40px;
  border-top: 1px solid var(--rule);
  text-align: center;
}

.foot__logo { width: min(104px, 30vw); margin: 0 auto; }

.foot__msg {
  margin: 28px 0 0;
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--sumi-soft);
}

.foot__nav {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  gap: 32px;
  font-size: 10px;
}

.foot__nav a {
  text-decoration: none;
  color: var(--sumi-soft);
  transition: color .3s ease;
}
.foot__nav a:hover { color: var(--sumi); }

.foot__copy {
  margin: 46px 0 0;
  font-size: 9px;
  color: var(--sumi-soft);
  opacity: .75;
}

/* ===== スクロールで出てくるやつ ===== */
[data-rise] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 1s cubic-bezier(.19, 1, .22, 1), transform 1s cubic-bezier(.19, 1, .22, 1);
}
[data-rise].is-in { opacity: 1; transform: none; }

/* ヒーローは読み込み時に自前で動くので、監視の対象外にしておく */
.hero [data-rise] { opacity: 1; transform: none; transition: none; }

/* ===== 狭い画面 ===== */
@media (max-width: 860px) {
  :root { --bar-h: 62px; }

  body { line-height: 1.95; }

  .bar__logo img { height: 18px; }

  .hero { min-height: 84svh; padding-bottom: 11vh; }
  .hero__logo img { width: 74vw; }
  .hero__name { margin-top: 34px; }

  .block {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .block__label { position: static; }

  .svc { grid-template-columns: 48px 1fr; gap: 0 14px; }
  .svc__num { line-height: 2.9; }

  .facts__row {
    grid-template-columns: 1fr;
    gap: 2px;
    padding: 22px 0;
  }
  .facts dt { line-height: 2.2; font-size: .72rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  [data-rise] { opacity: 1; transform: none; }
}