@charset "UTF-8";
/* RUNICON corporate site
   色・書体はブランドガイド v1.0 に従う。アクセントカラーは使わない。 */

:root {
  color-scheme: light;

  --color-bg:        #FFFFFF;
  --color-fg:        #000000;
  --color-muted:     #595959;
  --color-border:    #D4D4D4;
  --color-surface:   #F5F5F5;
  --color-bg-invert: #000000;
  --color-fg-invert: #FFFFFF;

  --font-sans: "DejaVu Sans", "Noto Sans JP", Arial, "Helvetica Neue", Helvetica, sans-serif;

  --measure: 34rem;      /* 本文1行の最大幅 */
  --wrap:    68rem;      /* コンテンツ全体の最大幅 */
  --gutter:  1.5rem;     /* スマホの左右余白 */
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.9;
  font-feature-settings: "palt";
}
img, svg { max-width: 100%; height: auto; vertical-align: middle; }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.5; margin: 0; }
p, ul, ol, dl, table { margin: 0; }
a { color: inherit; }

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: 5rem; border-top: 1px solid var(--color-border); }
.section:first-of-type { border-top: 0; }
.section--invert { background: var(--color-bg-invert); color: var(--color-fg-invert); border-top: 0; }
.section__title { font-size: 1.5rem; letter-spacing: .04em; margin-bottom: 2.5rem; }
.section__lead { max-width: var(--measure); margin-bottom: 2.5rem; }
.stack > * + * { margin-top: 1.25rem; }
.measure { max-width: var(--measure); }

/* ---------- header ---------- */
.header {
  position: sticky; top: 0; z-index: 10;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.5rem; }
.header__logo { display: inline-flex; align-items: center; padding-block: .75rem; }
.header__logo img { width: 148px; }
.nav ul { display: flex; flex-wrap: wrap; gap: 1.5rem; list-style: none; padding: 0; font-size: .875rem; }
.nav a { text-decoration: none; padding-block: .25rem; border-bottom: 1px solid transparent; }
.nav a:hover, .nav a:focus-visible { border-bottom-color: var(--color-fg); }
.nav a[aria-current="page"] { font-weight: 700; border-bottom-color: var(--color-fg); }

/* スマホではヘッダーを固定しない（ナビが折り返して画面を占有するため） */
@media (max-width: 47.99rem) {
  .header { position: static; }
  .header__inner { flex-direction: column; align-items: flex-start; gap: .25rem; min-height: 0; padding-block: .25rem .875rem; }
  .header__logo { padding-block: 1rem .5rem; }
  .header__logo img { width: 124px; }
  .nav ul { gap: .5rem 1.25rem; font-size: .8125rem; }
}

/* ---------- hero ---------- */

/* ---------- page head ---------- */
.pagehead { padding-block: 4rem 3rem; border-bottom: 1px solid var(--color-border); }
.pagehead__title { font-size: clamp(1.75rem, 5vw, 2.5rem); }
.pagehead__lead { margin-top: 1.5rem; max-width: var(--measure); }

/* ---------- cards / grid ---------- */
.grid { display: grid; gap: 1.5rem; }
@media (min-width: 48rem) { .grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 48rem) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }
.card { border: 1px solid var(--color-border); padding: 2rem; }
.card__num { font-size: .8125rem; letter-spacing: .14em; color: var(--color-muted); }
.card__title { font-size: 1.125rem; margin-block: .75rem 1rem; }
.card p { font-size: .9375rem; }
.section--invert .card { border-color: #555; }
.section--invert .card__num { color: #BBB; }

/* ---------- numbered list ---------- */
.steps { list-style: none; padding: 0; counter-reset: step; }
.steps > li { counter-increment: step; border-top: 1px solid var(--color-border); padding-block: 1.75rem; display: grid; gap: .5rem 1.5rem; }
.steps > li:last-child { border-bottom: 1px solid var(--color-border); }
@media (min-width: 48rem) {
  .steps > li { grid-template-columns: 3rem minmax(0, 1fr); }
  .steps > li::before { grid-column: 1; grid-row: 1; }
  .steps h3, .steps p { grid-column: 2; }
}
.steps > li::before { content: counter(step, decimal-leading-zero); font-weight: 700; color: var(--color-muted); font-size: .9375rem; }
.steps h3 { font-size: 1.0625rem; }
.steps p { font-size: .9375rem; max-width: var(--measure); }

/* ---------- table ---------- */
.table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
.table th, .table td { text-align: left; vertical-align: top; padding: 1rem 1rem 1rem 0; border-bottom: 1px solid var(--color-border); }
.table th { width: 11rem; font-weight: 700; white-space: nowrap; }
@media (max-width: 36rem) {
  .table, .table tbody, .table tr, .table th, .table td { display: block; width: auto; }
  .table th { border-bottom: 0; padding-bottom: 0; }
  .table td { padding-top: .25rem; }
}

/* ---------- news ---------- */
.news { list-style: none; padding: 0; }
.news > li { border-top: 1px solid var(--color-border); padding-block: 1.5rem; display: grid; gap: .25rem 2rem; }
.news > li:last-child { border-bottom: 1px solid var(--color-border); }
@media (min-width: 48rem) { .news > li { grid-template-columns: 8rem 1fr; } }
.news time { color: var(--color-muted); font-size: .875rem; }

/* ---------- text ---------- */
.lede { font-size: 1.0625rem; }
.note { font-size: .875rem; color: var(--color-muted); }
.section--invert .note { color: #BBB; }
.list { padding-left: 1.25rem; }
.list li + li { margin-top: .5rem; }
.list--plain { list-style: none; padding-left: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: .9375rem 2.5rem;
  background: var(--color-fg); color: var(--color-bg);
  text-decoration: none; font-weight: 700; font-size: .9375rem;
  border: 1px solid var(--color-fg); cursor: pointer;
}
.btn:hover, .btn:focus-visible { background: var(--color-bg); color: var(--color-fg); }
.section--invert .btn { background: var(--color-fg-invert); color: var(--color-bg-invert); border-color: var(--color-fg-invert); }
.section--invert .btn:hover, .section--invert .btn:focus-visible { background: transparent; color: var(--color-fg-invert); }

/* ---------- form ---------- */
.form { max-width: 36rem; }
.field + .field { margin-top: 1.75rem; }
.field label { display: block; font-weight: 700; font-size: .9375rem; margin-bottom: .5rem; }
.field .req { font-size: .75rem; margin-left: .5rem; border: 1px solid var(--color-fg); padding: .0625rem .375rem; font-weight: 400; }
.field input, .field textarea {
  width: 100%; padding: .75rem; font: inherit; font-size: 1rem;
  color: var(--color-fg); background: var(--color-bg);
  border: 1px solid var(--color-fg); border-radius: 0;
}
.field textarea { min-height: 11rem; resize: vertical; }
.field input:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--color-fg); outline-offset: 2px; }
.form__consent { margin-top: 1.75rem; font-size: .9375rem; display: flex; gap: .625rem; align-items: flex-start; }
.form__consent input { margin-top: .4rem; }
.form__actions { margin-top: 2rem; }
.form__status { margin-top: 1.5rem; font-size: .9375rem; border: 1px solid var(--color-fg); padding: 1rem; }
.form__status[hidden] { display: none; }

/* ---------- footer ---------- */
.footer { background: var(--color-bg-invert); color: var(--color-fg-invert); padding-block: 4rem 2.5rem; }
.footer a { color: inherit; }
.footer__logo img { width: 132px; }
.footer__grid { display: grid; gap: 2.5rem; margin-top: 2.5rem; }
@media (min-width: 48rem) { .footer__grid { grid-template-columns: 1.4fr 1fr; } }
.footer__nav ul { list-style: none; padding: 0; display: grid; gap: .75rem; font-size: .9375rem; }
.footer__nav a { text-decoration: none; border-bottom: 1px solid transparent; }
.footer__nav a:hover, .footer__nav a:focus-visible { border-bottom-color: currentColor; }
.footer__info { font-size: .875rem; font-style: normal; line-height: 2; }
.footer__bottom { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid #444; font-size: .8125rem; color: #BBB; display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; }

/* ---------- a11y ---------- */
.skip { position: absolute; left: -9999px; }
.skip:focus { left: var(--gutter); top: .5rem; z-index: 100; background: var(--color-fg); color: var(--color-bg); padding: .75rem 1rem; }
:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }


/* ==========================================================================
   ヒーロー（画像の上に文字を重ねる）
   ========================================================================== */
.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: min(90vh, 50rem);
  overflow: hidden;
  background: var(--color-bg-invert);
  color: var(--color-fg-invert);
}
.hero__media { position: absolute; inset: 0; z-index: 0; }
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: 62% 45%;
  animation: hero-zoom 26s ease-out both;
}
/* 文字を読ませるための黒の覆い。写真の上に無地の面をつくる */
.hero::after {
  content: "";
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(to bottom, rgba(0,0,0,.62) 0%, rgba(0,0,0,.18) 14%, rgba(0,0,0,0) 26%),
    linear-gradient(100deg, rgba(0,0,0,.86) 0%, rgba(0,0,0,.66) 38%, rgba(0,0,0,.18) 72%, rgba(0,0,0,.08) 100%),
    linear-gradient(to top, rgba(0,0,0,.55) 0%, rgba(0,0,0,0) 45%);
}
.hero > .wrap { position: relative; z-index: 2; padding-block: 9rem 4.5rem; }

.hero__eyebrow {
  font-size: .8125rem; letter-spacing: .22em; text-transform: uppercase;
  display: flex; align-items: center; gap: 1rem;
}
.hero__eyebrow::before {
  content: ""; width: 2.5rem; height: 1px; background: currentColor;
  transform-origin: left; animation: rule-in 1s .15s ease-out both;
}
.hero__title {
  margin-top: 1.75rem;
  font-size: clamp(2.125rem, 6.4vw, 4rem);
  line-height: 1.32; letter-spacing: .005em;
}
.hero__lead { margin-top: 2rem; max-width: 30rem; font-size: 1.0625rem; }
/* 写真の明るい部分に文字がかかっても読めるように、ごく弱い影を敷く */
.hero__eyebrow, .hero__title, .hero__lead { text-shadow: 0 1px 28px rgba(0,0,0,.5); }

.hero__eyebrow { animation: rise-in .9s .05s cubic-bezier(.2,.7,.3,1) both; }
.hero__title   { animation: rise-in 1s .22s cubic-bezier(.2,.7,.3,1) both; }
.hero__lead    { animation: rise-in 1s .42s cubic-bezier(.2,.7,.3,1) both; }

.hero__scroll {
  position: absolute; z-index: 2; right: var(--gutter); bottom: 2.25rem;
  font-size: .75rem; letter-spacing: .18em; text-transform: uppercase;
  display: flex; align-items: center; gap: .75rem;
  animation: rise-in 1s .8s ease-out both;
}
.hero__scroll::after {
  content: ""; width: 1px; height: 3rem; background: currentColor;
  transform-origin: top; animation: scroll-cue 2.4s 1.6s ease-in-out infinite;
}
@media (max-width: 47.99rem) {
  .hero { min-height: 32rem; align-items: flex-end; }
  .hero > .wrap { padding-block: 5rem 3.5rem; }
  .hero__scroll { display: none; }
  .hero__media img { object-position: 68% 45%; }
}

@keyframes hero-zoom { from { transform: scale(1.08); } to { transform: scale(1); } }
@keyframes rise-in { from { opacity: 0; transform: translateY(1.5rem); } to { opacity: 1; transform: none; } }
@keyframes rule-in { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes scroll-cue {
  0%, 100% { transform: scaleY(.35); opacity: .45; }
  50%      { transform: scaleY(1);   opacity: 1; }
}

/* ==========================================================================
   ヒーローの上のヘッダー（スクロールで白地に戻る）
   ========================================================================== */
@media (min-width: 48rem) {
  .has-hero .header {
    position: fixed; left: 0; right: 0; top: 0;
    background: transparent; border-bottom-color: transparent;
    transition: background .4s ease, border-color .4s ease, box-shadow .4s ease;
  }
  .has-hero .header__logo img,
  .has-hero .nav a { transition: filter .4s ease, color .4s ease; }
  .has-hero .header__logo img { filter: invert(1); }      /* 黒ロゴ → 白ロゴ */
  .has-hero .nav a { color: #FFF; }
  .has-hero .nav a[aria-current="page"] { border-bottom-color: #FFF; }

  .has-hero.is-scrolled .header { background: var(--color-bg); border-bottom-color: var(--color-border); }
  .has-hero.is-scrolled .header__logo img { filter: none; }
  .has-hero.is-scrolled .nav a { color: var(--color-fg); }
  .has-hero.is-scrolled .nav a[aria-current="page"] { border-bottom-color: var(--color-fg); }
}

/* ==========================================================================
   スクロールで出てくる
   ========================================================================== */
.js [data-reveal] { opacity: 0; transform: translateY(1.75rem); }
.js [data-reveal].is-visible {
  opacity: 1; transform: none;
  transition: opacity .8s cubic-bezier(.2,.7,.3,1), transform .8s cubic-bezier(.2,.7,.3,1);
}
.js [data-reveal][data-delay="1"].is-visible { transition-delay: .1s; }
.js [data-reveal][data-delay="2"].is-visible { transition-delay: .2s; }
.js [data-reveal][data-delay="3"].is-visible { transition-delay: .3s; }

/* ==========================================================================
   仕上げ
   ========================================================================== */
.section__title { position: relative; padding-top: 1.5rem; }
.section__title::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 2.5rem; height: 2px; background: currentColor;
  transform: scaleX(0); transform-origin: left; transition: transform .7s .15s cubic-bezier(.2,.7,.3,1);
}
[data-reveal].is-visible .section__title::before,
.is-visible > .wrap > .section__title::before { transform: scaleX(1); }
.js [data-reveal] .section__title::before { transform: scaleX(0); }
.js [data-reveal].is-visible .section__title::before { transform: scaleX(1); }
html:not(.js) .section__title::before { transform: scaleX(1); }

.card {
  transition: transform .45s cubic-bezier(.2,.7,.3,1), border-color .45s ease, box-shadow .45s ease;
  background: var(--color-bg);
}
.card:hover { transform: translateY(-.375rem); border-color: var(--color-fg); box-shadow: 0 .75rem 2rem rgba(0,0,0,.08); }
.section--invert .card { background: transparent; }
.section--invert .card:hover { border-color: #FFF; box-shadow: none; }

.steps > li { transition: background .4s ease; }
.steps > li:hover { background: var(--color-surface); }
.section--invert .steps > li:hover { background: rgba(255,255,255,.06); }

.btn { transition: background .3s ease, color .3s ease, transform .3s ease; }
.btn::after { content: " →"; display: inline-block; transition: transform .3s cubic-bezier(.2,.7,.3,1); }
.btn:hover::after { transform: translateX(.375rem); }

.pagehead { position: relative; overflow: hidden; }
.pagehead__title { animation: rise-in .7s 0s cubic-bezier(.2,.7,.3,1) both; }
.pagehead__lead { animation: rise-in .75s .12s cubic-bezier(.2,.7,.3,1) both; }

/* 動きを減らす設定のときは、いっさい動かさない */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .section__title::before { transform: scaleX(1); }
}