:root {
  --ink: #20252b;
  --muted: #687078;
  --line: #d9dfe2;
  --paper: #ffffff;
  --soft: #f4f6f6;
  --navy: #1e2b38;
  --navy-light: #314353;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  line-height: 1.9;
  letter-spacing: .025em;
}
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
button { font: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.header-inner {
  width: min(calc(100% - 48px), var(--max));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand { display: inline-flex; flex-direction: column; line-height: 1.25; }
.brand-main { font-size: 1.18rem; font-weight: 700; letter-spacing: .16em; }
.brand-sub { margin-top: 5px; color: var(--muted); font-family: Arial, sans-serif; font-size: .65rem; letter-spacing: .2em; }
.site-nav { display: flex; align-items: center; gap: 27px; font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .86rem; }
.site-nav a { position: relative; padding: 29px 0 25px; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 18px; height: 1px; background: var(--ink); transition: right .25s ease; }
.site-nav a:hover::after, .site-nav a.is-current::after { right: 0; }
.menu-button { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.menu-button > span:not(.sr-only) { display: block; width: 25px; height: 1px; margin: 6px 0; background: var(--ink); }

.page-hero { border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #f8f9f8, #fff); }
.page-hero-inner { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; padding: 112px 0 105px; }
.eyebrow, .work-label { margin: 0 0 16px; color: #6d777e; font-family: Arial, sans-serif; font-size: .72rem; font-weight: 700; letter-spacing: .24em; }
.page-hero h1 { margin: 0; font-size: clamp(2.7rem, 6vw, 5.6rem); font-weight: 500; letter-spacing: .12em; line-height: 1.15; }
.page-lead { max-width: 700px; margin: 28px 0 0; color: var(--muted); font-size: 1.03rem; }

.works-intro, .all-works { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; padding: 105px 0; }
.section-heading { display: flex; align-items: center; gap: 18px; margin-bottom: 52px; }
.section-heading p { margin: 0; font-family: Arial, sans-serif; font-size: .7rem; font-weight: 700; letter-spacing: .22em; }
.section-heading span { flex: 1; height: 1px; background: var(--line); }
.intro-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: start; }
.intro-grid h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.4rem); font-weight: 500; line-height: 1.55; letter-spacing: .07em; }
.intro-copy { padding-top: 5px; color: #525b62; font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; }
.intro-copy p { margin: 0 0 1.2em; }

.featured-work {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto 30px;
  display: grid;
  grid-template-columns: 1.35fr .85fr;
  min-height: 510px;
  background: var(--soft);
}
.featured-image { min-height: 510px; overflow: hidden; background: #e8ebec; }
.featured-image img { height: 100%; object-fit: cover; object-position: center; transition: transform .5s ease; }
.featured-image:hover img { transform: scale(1.015); }
.featured-copy { padding: 66px 58px; align-self: center; }
.featured-copy h2 { margin: 0 0 25px; font-size: clamp(2rem, 3.5vw, 3.1rem); font-weight: 500; line-height: 1.4; }
.featured-description { margin: 0 0 30px; color: #525b62; font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .95rem; }
.work-meta { margin: 0 0 36px; border-top: 1px solid #ccd2d5; font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .85rem; }
.work-meta div { display: grid; grid-template-columns: 100px 1fr; padding: 10px 0; border-bottom: 1px solid #ccd2d5; }
.work-meta dt { color: var(--muted); }
.work-meta dd { margin: 0; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 51px; padding: 0 25px; border: 1px solid transparent; font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .84rem; letter-spacing: .06em; transition: .2s ease; }
.button-dark { color: white; background: var(--navy); }
.button-dark:hover { background: var(--navy-light); transform: translateY(-1px); }
.button-light { color: var(--navy); background: white; }
.button-light:hover { background: #f1f3f4; transform: translateY(-1px); }

.all-works { padding-top: 115px; }
.section-title-row { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 50px; border-bottom: 1px solid var(--line); padding-bottom: 28px; }
.section-title-row h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 500; letter-spacing: .08em; }
.section-title-row > p { margin: 0 0 5px; color: var(--muted); font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .85rem; }
.works-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 68px 44px; }
.work-card { min-width: 0; }
.work-image { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: var(--soft); }
.work-image img { height: 100%; object-fit: cover; transition: transform .45s ease; }
.work-image:hover img { transform: scale(1.025); }
.work-body { padding: 26px 4px 0; }
.work-topline { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 12px; color: #778087; font-family: Arial, "Yu Gothic", sans-serif; font-size: .72rem; letter-spacing: .1em; }
.work-body h3 { margin: 0 0 14px; font-size: clamp(1.45rem, 2.5vw, 2rem); font-weight: 500; letter-spacing: .05em; line-height: 1.45; }
.work-body h3 a:hover { opacity: .65; }
.work-body p { min-height: 3.8em; margin: 0 0 18px; color: #596168; font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .9rem; line-height: 1.85; }
.card-link { display: inline-flex; gap: 13px; align-items: center; padding-bottom: 4px; border-bottom: 1px solid var(--ink); font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .79rem; }
.card-link:hover { opacity: .6; }

.message-section { margin-top: 25px; padding: 78px max(24px, calc((100% - var(--max))/2)); display: flex; justify-content: space-between; align-items: center; gap: 50px; color: white; background: var(--navy); }
.message-section h2 { margin: 0 0 12px; font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 500; letter-spacing: .05em; }
.message-section p:not(.eyebrow) { margin: 0; color: #d4dbe0; font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; }
.message-section .eyebrow { color: #aebbc4; }

.site-footer { border-top: 1px solid var(--line); }
.footer-inner { width: min(calc(100% - 48px), var(--max)); min-height: 130px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 30px; color: var(--muted); font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; font-size: .76rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a:hover { color: var(--ink); }

@media (max-width: 900px) {
  .header-inner { min-height: 70px; }
  .menu-button { display: block; }
  .site-nav { display: none; position: absolute; top: 70px; left: 0; right: 0; padding: 15px 24px 24px; flex-direction: column; align-items: stretch; gap: 0; background: white; border-bottom: 1px solid var(--line); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 14px 2px; border-bottom: 1px solid #edf0f1; }
  .site-nav a::after { display: none; }
  .intro-grid { grid-template-columns: 1fr; gap: 34px; }
  .featured-work { grid-template-columns: 1fr; }
  .featured-image { min-height: auto; aspect-ratio: 16 / 9; }
  .featured-copy { padding: 50px 42px; }
  .message-section { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 650px) {
  .header-inner, .page-hero-inner, .works-intro, .featured-work, .all-works, .footer-inner { width: min(calc(100% - 32px), var(--max)); }
  .brand-main { font-size: 1rem; }
  .brand-sub { font-size: .58rem; }
  .page-hero-inner { padding: 75px 0 70px; }
  .page-lead { margin-top: 22px; font-size: .93rem; }
  .works-intro, .all-works { padding: 75px 0; }
  .section-heading { margin-bottom: 34px; }
  .intro-grid h2 { line-height: 1.45; }
  .featured-copy { padding: 38px 27px 42px; }
  .work-meta div { grid-template-columns: 88px 1fr; }
  .section-title-row { align-items: flex-start; flex-direction: column; gap: 10px; margin-bottom: 36px; }
  .works-grid { grid-template-columns: 1fr; gap: 54px; }
  .work-body p { min-height: auto; }
  .message-section { padding-top: 62px; padding-bottom: 62px; }
  .footer-inner { padding: 34px 0; align-items: flex-start; flex-direction: column; min-height: auto; }
}