:root {
  --ink: #142b43;
  --cream: #f8f6ef;
  --line: #c9cbc8;
  --gold: #956000;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--cream); font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif; font-size: 16px; font-weight: 400; line-height: 1.85; letter-spacing: .025em; }
a { color: inherit; text-decoration: none; }
.mobile-break { display: none; }
.site-nav { position: sticky; z-index: 10; top: 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 100%; min-height: 60px; padding: 8px clamp(24px, 5vw, 72px); border-bottom: 1px solid rgba(255,255,255,.2); background: var(--ink); color: #fff; }
.site-name { font-size: 14px; font-weight: 700; letter-spacing: .07em; white-space: nowrap; }
.site-nav ul { display: flex; gap: 30px; margin: 0; padding: 0; list-style: none; font-size: 13px; font-weight: 600; letter-spacing: .04em; }
.menu-toggle { display: none; }
.site-nav a:hover { color: #e8c98a; }
.site-nav a:focus-visible, .menu-toggle:focus-visible, .button:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }
.top-brand { position: relative; display: grid; place-content: center; min-height: clamp(390px, 67.5vh, 660px); min-height: clamp(390px, 67.5svh, 660px); padding: 70px 24px 90px; background: var(--ink); color: var(--cream); text-align: center; }
.top-brand::after { content: ""; position: absolute; left: 50%; bottom: 12%; width: 1px; height: 56px; background: #b58b43; }
.top-brand-name { margin: 0; color: var(--cream); font-size: clamp(25px, 6vw, 64px); font-weight: 500; line-height: 1.35; letter-spacing: .12em; white-space: nowrap; }
.top-brand-description { margin: 22px 0 0; font-size: clamp(13px, 1.2vw, 16px); line-height: 1.8; letter-spacing: .06em; }
.hero { position: relative; display: grid; place-items: center; padding: 110px 24px; overflow: hidden; background: var(--cream); text-align: center; }
.hero-content { position: relative; z-index: 1; width: min(760px, 100%); }
#philosophy h1 { margin: 0; font-size: clamp(26px, 4vw, 46px); font-weight: 600; line-height: 1.45; letter-spacing: .08em; }
.hero-lead, .philosophy-message { max-width: 42em; margin-inline: auto; font-size: clamp(16px, 1.25vw, 18px); font-weight: 400; line-height: 2.1; letter-spacing: .03em; text-align: center; }
.hero-lead { margin-top: 64px; margin-bottom: 0; }
.philosophy-opening { font-size: clamp(19px, 1.7vw, 23px); font-weight: 600; line-height: 1.8; letter-spacing: .04em; }
.philosophy-message { margin-top: 24px; margin-bottom: 0; }
.philosophy-emphasis { color: var(--gold); font-weight: 700; }
section[id] { scroll-margin-top: 60px; }
.section { display: flex; align-items: center; min-height: max(480px, 100vh); min-height: max(480px, 100svh); padding: 105px 28px; }
.container { width: min(1080px, 100%); margin: auto; }
#work .container, .about-section .container { max-width: 760px; }
#work h2, #about h2 { margin: 7px 0 36px; font-size: clamp(25px, 3vw, 34px); font-weight: 600; line-height: 1.4; letter-spacing: .06em; }
#work h2::after, #about h2::after { content: ""; display: block; width: 34px; height: 2px; margin-top: 18px; background: var(--gold); }
.section-white { background: #efeee8; }
.work-grid { display: grid; grid-template-columns: 1fr; gap: 0; margin-inline: auto; border-top: 1px solid var(--line); }
.work-grid .service-card { display: grid; grid-template-columns: minmax(180px, 240px) minmax(0, 1fr); column-gap: 32px; align-items: start; padding: 30px 0 32px; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); }
.work-grid h3 { margin: 0 0 13px; font-size: clamp(18px, 1.6vw, 21px); font-weight: 700; line-height: 1.5; letter-spacing: .04em; }
.work-grid .service-card p { max-width: 42em; margin: 0; font-size: 16px; line-height: 1.95; letter-spacing: .025em; }
.work-grid .button { display: inline-block; grid-column: 2; justify-self: start; margin-top: 20px; padding: 10px 16px; border: 1px solid var(--ink); background: transparent; color: var(--ink); font-size: 14px; font-weight: 700; }
.work-grid .button:hover { background: var(--ink); color: #fff; }
.about-section { background: var(--cream); }
.about-intro { margin-bottom: 36px; font-size: 15px; line-height: 1.95; letter-spacing: .025em; }
.about-intro p { margin: 0; }
.company-details { max-width: 760px; margin: 0 auto; border-top: 1px solid var(--line); }
.company-details div { display: grid; grid-template-columns: minmax(110px, 180px) 1fr; gap: 16px; padding: 22px 8px; border-bottom: 1px solid var(--line); }
.company-details dt { color: var(--ink); font-size: 14px; font-weight: 700; line-height: 1.8; letter-spacing: .04em; }
.company-details dd { margin: 0; font-size: 16px; line-height: 1.9; }
.business-list { margin: 0; padding: 0; list-style: none; }
.business-list li { position: relative; padding-left: 1.1em; }
.business-list li + li { margin-top: .35em; }
.business-list li::before { content: "–"; position: absolute; left: 0; color: var(--gold); }
.site-footer { padding: 42px 24px; color: #fff; background: var(--ink); text-align: center; letter-spacing: .08em; }
.site-footer p { margin: 0; font-weight: 700; }
.site-footer small { display: block; margin-top: 10px; color: #e7e4dc; font-size: 12px; line-height: 1.6; }
@media (max-width: 700px) {
  .mobile-break { display: initial; }
  .pc-break { display: none; }
  .site-nav { flex-wrap: wrap; gap: 4px; min-height: 54px; padding: 5px 18px; }
  .site-nav ul { justify-content: space-between; gap: 4px; width: 100%; font-size: 11px; }
  .menu-ready .menu-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; color: #fff; cursor: pointer; }
  .menu-toggle span { display: block; width: 24px; height: 2px; background: currentColor; }
  .menu-ready ul { position: absolute; top: 100%; left: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; width: 100%; max-height: calc(100vh - 54px); overflow-y: auto; padding: 8px 18px 12px; border-bottom: 1px solid rgba(255,255,255,.2); background: var(--ink); font-size: 14px; }
  .menu-ready .menu-toggle[aria-expanded="true"] + ul { display: flex; }
  .menu-ready ul a { display: block; padding: 10px 4px; border-top: 1px solid rgba(255,255,255,.2); }
  .top-brand { padding: 65px 20px 80px; }
  .top-brand-name { font-size: clamp(22px, 6vw, 42px); letter-spacing: .06em; }
  .hero { padding: 80px 24px; }
  .hero-lead, .philosophy-message { line-height: 2; }
  section[id] { scroll-margin-top: 54px; }
  .section { padding: 85px 24px; }
  .work-grid .service-card { grid-template-columns: 1fr; gap: 0; padding: 26px 0; }
  .work-grid .button { grid-column: 1; }
  .company-details dd { overflow-wrap: anywhere; }
}
@media (max-width: 480px) {
  .company-details div { grid-template-columns: 1fr; gap: 4px; padding: 17px 4px; }
}