:root {
  --color-bg: #FFFFFF;
  --color-surface: #FAFAF8;
  --color-ink: #282828;
  --color-charcoal: #383838;
  --color-text: #282828;
  --color-text-sub: #888888;
  --color-border: #E2E2DE;
  --radius: 2px;
  --shadow-soft: none;
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-sans); font-weight: 500; margin: 0; line-height: 1.4; letter-spacing: 0.01em; }
p { margin: 0; }
ul, ol, dl { margin: 0; padding: 0; list-style: none; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ===== buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 2px;
  padding: 14px 28px;
  font-weight: 500;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: opacity 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--color-ink); color: #fff; }
.btn--primary:hover { opacity: 0.85; }
.btn--ghost { background: transparent; color: var(--color-ink); border-color: var(--color-ink); }
.btn--ghost:hover { background: rgba(40, 40, 40, 0.05); }
.btn--sm { padding: 8px 16px; font-size: 13px; }
.btn--lg { padding: 16px 32px; font-size: 16px; }
.btn--block { width: 100%; }

/* ===== header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  padding: 12px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-logo { display: flex; align-items: center; gap: 14px; }
.site-logo__image { height: 54px; width: auto; display: block; }

.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 500; }
.site-nav a:not(.btn) { position: relative; padding: 4px 0; letter-spacing: 0.03em; }
.site-nav a:not(.btn):hover { color: var(--color-text-sub); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--color-text); margin: 0 auto; transition: 0.2s ease; }

/* ===== hero ===== */
.hero { padding: 0 0 140px; }
.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  align-items: center;
}
.hero__copy {
  max-width: 460px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
.hero__visual { padding-right: 0; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
  margin-bottom: 14px;
  border-left: 3px solid var(--color-ink);
  padding-left: 12px;
}
.eyebrow--center { display: inline-block; text-align: left; }
.hero h1 { font-size: 39px; font-weight: 700; color: var(--color-ink); margin-bottom: 24px; line-height: 1.35; letter-spacing: -0.01em; }
.hero__lead { font-size: 17px; color: var(--color-text-sub); margin-bottom: 40px; line-height: 1.9; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }

.hero__visual { text-align: center; }
.hero-photo {
  width: 100%;
  aspect-ratio: 4 / 4.8;
  object-fit: cover;
  border-radius: var(--radius);
}
.hero__visual-note { font-size: 12px; color: var(--color-text-sub); margin-top: 10px; }
.only-mobile { display: none; }

/* ===== section shared ===== */
section { padding: 120px 0; }
.section-title { font-size: 39px; font-weight: 700; color: var(--color-ink); margin-bottom: 16px; line-height: 1.35; letter-spacing: -0.01em; }
.section-title--center { text-align: left; }
.section-lead { text-align: left; color: var(--color-text-sub); font-size: 14px; margin: -4px 0 56px; max-width: 560px; }

/* ===== problems ===== */
.problems { background: var(--color-surface); }
.problems__title {
  text-align: left;
  margin-bottom: 64px;
  font-size: 39px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.problems__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.problem-item { text-align: left; }
.problem-item__arrow {
  display: block;
  font-size: 11px;
  color: var(--color-text-sub);
  margin-bottom: 6px;
}
.problem-item__num {
  display: block;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 42px;
  color: var(--color-text-sub);
  line-height: 1;
  margin-bottom: 20px;
}
.problem-item h3 { font-size: 19px; font-weight: 600; margin-bottom: 10px; line-height: 1.6; }
.problem-item p { font-size: 13.5px; color: var(--color-text-sub); }

/* ===== reasons ===== */
.reasons__title {
  font-size: 39px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.reasons__list { display: flex; flex-direction: column; gap: 0; max-width: 820px; }
.reason { display: flex; gap: 32px; align-items: flex-start; padding: 32px 0; border-bottom: 1px solid var(--color-border); }
.reason:first-child { border-top: 1px solid var(--color-border); }
.reason__num {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 42px;
  color: var(--color-text-sub);
  flex: none;
  width: 70px;
}
.reason h3 { font-size: 19px; font-weight: 500; margin-bottom: 12px; }
.reason p { font-size: 14.5px; color: var(--color-text-sub); }

/* ===== works ===== */
.works { background: var(--color-surface); }
.works__title {
  font-size: 39px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.works__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px 48px;
}
.work-card {
  background: var(--color-bg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.work-card__media { position: relative; }
.work-photo { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.work-card__body { padding: 22px 0 0; }
.work-card__tag { font-size: 12px; color: var(--color-text-sub); font-weight: 600; margin-bottom: 8px; letter-spacing: 0.03em; }
.work-card__body h3 { font-family: var(--font-sans); font-size: 18px; font-weight: 500; margin-bottom: 10px; line-height: 1.6; }
.work-card__body p { font-size: 13.5px; color: var(--color-text-sub); }

/* ===== price ===== */
.price__table { max-width: 820px; border: none; border-top: 1px solid var(--color-border); }
.price-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  align-items: center;
  gap: 12px;
  padding: 20px 4px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  font-size: 18px;
  font-weight: 500;
}
.price-row--head {
  background: transparent;
  font-weight: 500;
  font-size: 18px;
  padding: 14px 4px;
}
.price__note { text-align: left; font-size: 12.5px; color: var(--color-text-sub); margin-top: 20px; }

/* ===== flow ===== */
.flow { background: var(--color-surface); }
.flow__list {
  display: flex;
  flex-direction: column;
  max-width: 820px;
}
.flow-step__box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 32px 36px;
}
.flow-step:not(:last-child)::after {
  content: "▼";
  display: block;
  text-align: center;
  color: var(--color-text-sub);
  font-size: 14px;
  margin: 16px 0;
}
.flow-step h3 { font-size: 18px; font-weight: 500; margin-bottom: 10px; }
.flow-step__num { font-weight: 700; }
.flow-step p { font-size: 14px; color: var(--color-text-sub); line-height: 1.8; }

/* ===== voice ===== */
.voice__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); }
.voice-card {
  margin: 0;
  background: var(--color-bg);
  padding: 30px 26px;
}
.voice-card p { font-size: 14px; color: var(--color-text); margin-bottom: 18px; }
.voice-card cite { font-size: 12.5px; color: var(--color-text-sub); font-style: normal; }

/* ===== area ===== */
.area { background: var(--color-surface); }
.area__title {
  font-size: 39px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.area__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.area__text p { font-size: 14.5px; color: var(--color-text-sub); line-height: 1.9; }
.area__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.area__list li {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  text-align: center;
  padding: 16px 8px;
  font-size: 14px;
  font-weight: 600;
}

/* ===== recruit ===== */
.recruit__box {
  background: var(--color-charcoal);
  color: #F5F5F3;
  border-radius: var(--radius);
  padding: 64px;
}
.recruit .eyebrow { color: #B8B8B4; border-left-color: #B8B8B4; }
.recruit h2 { color: #fff; font-size: 39px; font-weight: 700; line-height: 1.35; letter-spacing: -0.01em; margin-bottom: 16px; }
.recruit__lead { color: #C7C7C2; margin-bottom: 32px; max-width: 560px; }
.recruit__list {
  margin-bottom: 36px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.recruit__list > div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.recruit__list dt { font-size: 13px; color: #B8B8B4; font-weight: 500; letter-spacing: 0.03em; }
.recruit__list dd { margin: 0; font-size: 14.5px; }
.recruit .btn--primary { background: #fff; color: var(--color-ink); }
.recruit .btn--primary:hover { opacity: 0.85; }

/* ===== news ===== */
.news__title {
  font-size: 39px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.news__list { max-width: 820px; display: flex; flex-direction: column; }
.news__list li {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 18px;
  font-weight: 500;
}
.news__list li:first-child { border-top: 1px solid var(--color-border); }
.news__date { flex: none; width: 120px; color: var(--color-text-sub); }
.news__tag {
  flex: none;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-sub);
  border: 1px solid var(--color-border);
  padding: 3px 10px;
  text-align: center;
}
.news__title-text { font-weight: 500; }

/* ===== faq ===== */
.faq__list { max-width: 760px; display: flex; flex-direction: column; }
.faq-item {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 4px 0;
}
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-item summary {
  cursor: pointer;
  padding: 20px 0;
  font-weight: 500;
  font-size: 18px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--color-text-sub); margin-left: 12px; font-weight: 300; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { font-size: 13.5px; color: var(--color-text-sub); padding-bottom: 20px; }

/* ===== contact ===== */
.contact { background: var(--color-surface); }
.contact__grid { max-width: 600px; margin: 0 auto; }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.contact-form label { font-size: 13.5px; font-weight: 500; display: flex; flex-direction: column; gap: 6px; }
.contact-form__label-text { display: inline-flex; align-items: center; }
.req { background: var(--color-ink); color: #fff; font-size: 10px; font-weight: 600; padding: 2px 6px; margin-left: 6px; }
.contact-form input, .contact-form select, .contact-form textarea {
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--color-ink);
}
.contact-form label.contact-form__consent {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  font-weight: 400;
}
.contact-form__consent input[type="checkbox"] {
  flex: none;
  width: 18px;
  height: 18px;
  accent-color: var(--color-ink);
}
.contact-form__policy-link { text-decoration: underline; cursor: pointer; }
.contact-form__note { font-size: 12px; color: var(--color-text-sub); text-align: left; }

/* ===== footer ===== */
.site-footer { background: var(--color-charcoal); color: #C7C7C2; padding: 64px 0 24px; }
.site-footer__inner { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; margin-bottom: 40px; }
.site-footer__name { font-family: var(--font-sans); font-size: 18px; font-weight: 600; letter-spacing: 0.04em; color: #fff; margin-bottom: 10px; }
.site-footer__brand p { font-size: 13px; margin-bottom: 4px; }
.site-footer__nav { display: flex; flex-direction: column; gap: 10px; font-size: 13.5px; }
.site-footer__nav a:hover { color: #fff; }
.site-footer__disclaimer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 20px 0;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 11.5px;
  color: #999994;
  line-height: 1.7;
}

/* ===== responsive ===== */
@media (max-width: 1024px) {
  .problems__grid { grid-template-columns: repeat(2, 1fr); }
  .voice__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__copy { padding-left: 20px; padding-right: 20px; }
  .hero__visual { order: -1; padding-right: 20px; }
  .recruit__list > div { grid-template-columns: 1fr; gap: 6px; }
  .area__grid { grid-template-columns: 1fr; }
  .area__list { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 640px) {
  section { padding: 64px 0; }
  .hero { padding: 0 0 48px; }
  .hero__copy { padding-top: 28px; }
  .hero h1 { font-size: 34px; margin-bottom: 24px; }
  .hero__inner { gap: 28px; }
  .hero-photo { aspect-ratio: 4 / 3.4; }
  .only-mobile { display: inline; }
  .section-title { font-size: 34px; }
  .recruit h2 { font-size: 34px; }

  .site-nav {
    position: fixed;
    top: var(--header-height, 60px);
    right: 0;
    bottom: 0;
    left: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 24px;
    gap: 20px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav a { font-size: 16px; }
  .site-nav .btn { margin-top: 10px; }
  .nav-toggle { display: flex; }

  .problems__grid { grid-template-columns: 1fr; }
  .works__grid { grid-template-columns: 1fr; }
  .voice__grid { grid-template-columns: 1fr; }
  .flow-step__box { padding: 24px 20px; }
  .area__list { grid-template-columns: repeat(2, 1fr); }
  .news__list li { flex-wrap: wrap; gap: 6px 16px; }
  .news__date { width: auto; }
  .price-row { grid-template-columns: 1.4fr 1fr 0.8fr; font-size: 12.5px; padding: 14px 4px; }
  .recruit__box { padding: 32px 24px; }
  .site-footer__inner { flex-direction: column; }
}