/* home 専用。ページ固有のレイアウトと画面幅別の調整。 */
/* ===== Hero ===== */
.hero { min-height: calc(100svh - var(--header-height) - 1px); padding: 64px var(--gutter); display: flex; flex-direction: column; justify-content: center; }
.hero-inner { max-width: var(--content-wide); width: 100%; margin: 0 auto; }
.hero .eyebrow { margin-bottom: 40px; font-size: 12px; letter-spacing: 0.28em; }
.hero h1 { margin-bottom: 56px; font-size: clamp(36px, 5vw, 72px); line-height: 1.35; letter-spacing: 0; }
.hero-body { display: flex; flex-wrap: wrap; gap: 40px 80px; align-items: flex-end; }
.hero-text { flex: 2 1 520px; min-width: 0; }
.hero-lead { margin-bottom: 20px; font-size: 18px; line-height: 1.9; color: var(--color-ink-900); }
.hero-desc { max-width: 720px; font-size: 15px; line-height: 2; }
.hero-cta { flex: 1 1 280px; max-width: 320px; display: flex; flex-direction: column; gap: 12px; }
@media (min-width: 1000px) {
  .hero-body { flex-direction: column; align-items: flex-start; }
  .hero-text { flex: none; width: 100%; }
  .hero-desc { max-width: none; }
  .hero-cta { flex: none; width: 100%; }
}

/* ===== Axis sections ===== */
.screen { display: flex; flex-wrap: wrap; min-height: 100svh; }
.band-surface { background: var(--color-surface); }
.dark { background: var(--color-ink-900); color: var(--color-white); }
.about { border-top: 1px solid var(--color-border); } /* ヒーロー下の横線は軸線と同じ色 */
.col-head {
  flex: 1 1 360px; min-width: 0;
  padding: 96px var(--axis-gap) 96px 0;
  display: flex; flex-direction: column; justify-content: center;
}
.col-body {
  flex: 2 1 560px; min-width: 0;
  padding: 96px 0 96px var(--axis-gap);
  border-left: 1px solid var(--color-border);
  display: flex; flex-direction: column; justify-content: center;
}
/* PC共通：見出し42%・本文58%。文字サイズを変えず、見出しの横幅を確保する */
@media (min-width: 1000px) {
  .col-head { flex: 0 0 42%; }
  .col-body { flex: 1 1 0; }
}
.dark .col-body { border-left-color: var(--color-dark-axis); }
.col-head .label { margin-bottom: 24px; }
.dark .label, .dark .sub { color: var(--color-dark-text-sub); }
.col-head h2 {
  font-size: clamp(30px, 3.2vw, 42px);
  line-height: 1.55;
  /* 見出しは<br>の位置でのみ改行し、収まらない場合だけ折り返す */
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.col-head .intro { margin-top: 24px; font-size: 14px; line-height: 2; }

/* axis dots */
.has-dot { position: relative; }
.dot {
  position: absolute;
  left: calc(-1 * var(--axis-gap) - (var(--axis-dot) / 2));
  top: 8px;
  width: var(--axis-dot); height: var(--axis-dot);
  border-radius: 50%;
  background: var(--color-ink-900);
}
.dot.open { background: var(--color-white); border: 1px solid var(--color-ink-900); }
.dark .dot { background: var(--color-white); }
.dot.end {
  width: var(--axis-dot-end); height: var(--axis-dot-end);
  left: calc(-1 * var(--axis-gap) - (var(--axis-dot-end) / 2));
}

/* about */
.about-body { max-width: 640px; }
.about-body p { margin-bottom: 24px; font-size: 16px; line-height: 2.05; }
.about-body p:last-of-type { margin-bottom: 40px; }

/* business */
.heading .num-ja { font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; }
.cards { display: flex; flex-direction: column; flex-wrap: wrap; gap: 16px; }
.cards .dot { top: 38px; }
.card { flex: 0 1 auto; min-width: 0; background: var(--color-white); padding: 36px 32px; display: flex; flex-direction: column; gap: 18px; }
.card h3 { font-size: 22px; line-height: 1.65; }
.card .desc { font-size: 14px; line-height: 2; }
.card .areas { padding-top: 16px; border-top: 1px solid var(--color-surface-strong); font-size: 13px; line-height: 2.1; color: var(--color-ink-900); }
.axis + .text-link { margin-top: 32px; }
.business-cta, .works-cta { margin-top: 32px; width: 100%; max-width: 320px; align-self: flex-start; }

/* works */
.works-list { display: flex; flex-direction: column; gap: 48px; max-width: 680px; }
.work-preview .dot { top: 8px; }
.work-preview .label { margin-bottom: 12px; }
.work-preview .work-name { margin-bottom: 12px; font-family: var(--font-heading); font-size: 28px; line-height: 1.3; color: var(--color-ink-900); }
.work-preview h3 { margin-bottom: 16px; font-size: 22px; line-height: 1.65; }
.work-preview .desc { font-size: 14px; line-height: 2; }

/* approach */
.process { max-width: 680px; }
.process .group { margin-bottom: 4px; font-size: 12px; letter-spacing: 0.1em; color: var(--color-ink-900); }
.process ol + .group { margin-top: 32px; }
.step { position: relative; display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 8px 24px; align-items: baseline; padding: 14px 0; border-bottom: 1px solid var(--color-surface-strong); }
.step .dot { top: 22px; }
.step .head { display: contents; }
.step .num { flex: 0 0 24px; font-size: 12px; color: var(--color-ink-500); }
.step .verb { font-family: var(--font-heading); font-size: 19px; font-weight: 500; color: var(--color-ink-900); }
.step .what { grid-column: 2; font-size: 14px; line-height: 1.8; color: var(--color-ink-500); }
.process .note { margin-top: 24px; font-size: 13px; color: var(--color-ink-500); }

/* principles */
/* Cormorant Garamondは和文より小さく見えるため、英字見出しは一段大きく組む */
.principles .col-head h2 { font-size: clamp(40px, 4.2vw, 58px); line-height: 1.2; color: var(--color-white); }
.principle-list { display: flex; flex-direction: column; gap: 56px; }
.principle { max-width: 680px; display: flex; flex-wrap: wrap; gap: 8px 40px; }
.principle .dot { top: 26px; }
.principle .title { flex: 1 1 200px; }
.principle .word { margin-bottom: 8px; font-family: var(--font-heading); font-size: clamp(44px, 4.6vw, 64px); font-weight: 500; line-height: 1.1; color: var(--color-white); }
.principle h3 { font-size: 14px; font-weight: 500; color: var(--color-white); }
.principle .desc { flex: 1.6 1 300px; font-size: 14px; line-height: 2; }
.principles .text-link { margin-top: 40px; }

/* contact */
.contact-body { max-width: 640px; }
.contact-body .contact-message { margin-bottom: 32px; max-width: none; font-size: clamp(24px, 2.4vw, 32px); line-height: 1.6; color: var(--color-ink-900); }
.contact-body .dot { top: 16px; }
.contact-body p { max-width: 560px; font-size: 15px; line-height: 2; }
.contact-cta { margin-top: 48px; }
.contact-cta .btn { display: inline-flex; gap: 32px; min-height: 56px; min-width: 260px; padding: 0 32px; font-size: 15px; }

/* ===== Tablet（768〜999px）：見出し列と本文列を上下に積む ===== */
@media (min-width: 768px) and (max-width: 999px) {
  .col-head, .col-body { flex-basis: 100%; }
  .col-head { padding-bottom: 48px; }
  .col-body { padding-top: 0; }
  .col-head h2 { font-size: clamp(36px, 4.6vw, 42px); }
  .principles .col-head h2 { font-size: clamp(48px, 6vw, 58px); }
}

/* ===== Smartphone（〜767px） ===== */
@media (max-width: 767px) {


  .hero { padding: 72px 20px 64px; }
  .hero .eyebrow { margin-bottom: 28px; font-size: 11px; letter-spacing: 0.24em; }
  .hero h1 { margin-bottom: 36px; font-size: 34px; line-height: 1.45; letter-spacing: 0.01em; }
  .hero-body { display: block; }
  .hero-lead { margin-bottom: 16px; font-size: 16px; line-height: 1.85; }
  .hero-desc { margin-bottom: 40px; font-size: 14px; line-height: 1.95; }
  .hero-cta { max-width: none; }

  /* 1画面の高さはファーストビューのみ */
  .screen { display: block; min-height: 0; padding: 64px 20px; }
  .col-head { padding: 0; margin-bottom: 32px; display: block; }
  .col-head .label { margin-bottom: 16px; }
  .col-head h2 { font-size: 28px; }
  .col-head .intro { margin-top: 20px; font-size: 14px; line-height: 1.95; }
  .col-body { padding: 0; border-left: none; display: block; }
  /* スマートフォンの軸は内容の範囲だけに引き、リンク・CTAの手前で終える */
  .axis { border-left: 1px solid var(--color-border); padding-left: var(--axis-gap); }
  .dark .axis { border-left-color: var(--color-dark-axis); }

  .about-body p { margin-bottom: 20px; font-size: 15px; line-height: 2; }
  .about-body p:last-of-type { margin-bottom: 24px; }

  .cards { flex-direction: column; gap: 12px; }
  .cards .dot { top: 30px; }
  .card { padding: 28px 24px; gap: 14px; }
  .card h3 { font-size: 20px; line-height: 1.6; }
  .card .desc { line-height: 1.95; }
  .axis + .text-link { margin-top: 24px; }
  .business-cta, .works-cta { margin-top: 24px; max-width: none; }

  .works-list { gap: 36px; }
  .work-preview .work-name { font-size: 24px; }
  .work-preview h3 { font-size: 20px; }
  .work-preview .desc { line-height: 1.95; }

  .step { display: block; }
  .step .dot { top: 19px; }
  .step .head { display: flex; gap: 12px; align-items: baseline; margin-bottom: 4px; }
  .step .num, .step .verb { flex: none; }
  .step .verb { font-size: 18px; }
  .process ol + .group { margin-top: 28px; }
  .process .note { margin-top: 20px; line-height: 1.8; }

  .principles.screen { padding: 72px 20px; }
  .principles .col-head { margin-bottom: 40px; }
  .principle-list { gap: 40px; }
  .principle { display: block; }
  .principles .col-head h2 { font-size: 38px; line-height: 1.25; }
  .principle .dot { top: 18px; }
  .principle .word { margin-bottom: 6px; font-size: 44px; }
  .principle h3 { margin-bottom: 12px; }
  .principle .desc { line-height: 1.95; }
  .principles .text-link { margin-top: 32px; }

  .contact.screen { padding: 80px 20px 88px; }
  .contact-body .contact-message { margin-bottom: 24px; font-size: 22px; line-height: 1.6; }
  .contact-body .dot { top: 12px; }
  .contact-body p { font-size: 14px; line-height: 1.95; }
  .contact-cta { margin-top: 36px; }
  .contact-cta .btn { display: flex; min-width: 0; padding: 0 24px; }

}