:root {
  --sumi: #1c1a17;
  --sumi-soft: #45413a;
  --sumi-mute: #837d72;
  --kinari: #f6f3ec;
  --kinari-deep: #efeae0;
  --shiro: #fdfcf9;
  --brass: #a8874f;
  --brass-bright: #c9a86a;
  --ai: #1e3040;
  --ai-deep: #16242f;
  --line: #ddd6c8;
  --line-dark: rgba(201, 168, 106, .25);
  --serif: "Shippori Mincho B1", serif;
  --sans: "Noto Sans JP", sans-serif;
  --en: "Cormorant Garamond", serif;
  --num: "Inter", "Noto Sans JP", sans-serif;
  --max: 1120px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--sumi);
  background: var(--kinari);
  line-height: 2.05;
  font-size: 15px;
  font-feature-settings: "palt";
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
a { color: inherit; }
img { max-width: 100%; display: block; }

/* reveal */
.rv { opacity: 0; transform: translateY(26px); transition: opacity 1s cubic-bezier(.2,.6,.2,1), transform 1s cubic-bezier(.2,.6,.2,1); }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } }

/* header */
header {
  position: sticky; top: 0; z-index: 90;
  background: color-mix(in srgb, var(--kinari) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-family: var(--en); font-weight: 600; font-size: 26px; letter-spacing: .16em; text-decoration: none; }
.logo b { color: var(--brass); font-weight: 600; }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a { text-decoration: none; font-size: 13px; letter-spacing: .1em; color: var(--sumi-soft); }
.nav-links a:hover, .nav-links a.on { color: var(--brass); }
.btn {
  display: inline-block; text-decoration: none; text-align: center;
  font-family: var(--serif); font-weight: 700; letter-spacing: .14em;
  color: var(--kinari) !important; background: var(--sumi);
  padding: 13px 34px; border: 1px solid var(--sumi);
  transition: all .35s;
}
.btn:hover { background: transparent; color: var(--sumi) !important; }
.btn-brass { background: var(--brass); border-color: var(--brass); }
.btn-brass:hover { background: transparent; color: var(--brass) !important; }
.btn-lg { padding: 18px 56px; font-size: 16px; }
.btn-ghost { background: transparent; color: var(--sumi) !important; }
.btn-ghost:hover { background: var(--sumi); color: var(--kinari) !important; }

/* sections */
section { padding: 110px 0; }
.sec-head { margin-bottom: 72px; }
.sec-en {
  font-family: var(--en); font-size: 13px; letter-spacing: .34em; color: var(--brass);
  text-transform: uppercase; display: block; margin-bottom: 18px;
}
.sec-title {
  font-family: var(--serif); font-weight: 800;
  font-size: clamp(24px, 3.4vw, 38px); letter-spacing: .06em; line-height: 1.8;
}
.sec-lead { margin-top: 24px; max-width: 680px; color: var(--sumi-soft); font-size: 14px; }

/* page hero (sub pages) */
.page-hero { position: relative; padding: 100px 0 90px; overflow: hidden; border-bottom: 1px solid var(--line); }
.page-hero .sec-en { margin-bottom: 22px; }
.page-hero h1 {
  font-family: var(--serif); font-weight: 800;
  font-size: clamp(28px, 4.4vw, 48px); letter-spacing: .06em; line-height: 1.7;
}
.page-hero .lead { margin-top: 28px; max-width: 640px; color: var(--sumi-soft); font-size: 14.5px; }

/* photo band */
.photo-band { position: relative; height: 340px; overflow: hidden; }
.photo-band img { width: 100%; height: 100%; object-fit: cover; }
.photo-band::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(28,26,23,.12), rgba(28,26,23,.34)); }
.photo-credit { position: absolute; right: 14px; bottom: 10px; z-index: 2; font-family: var(--en); font-size: 10px; letter-spacing: .2em; color: rgba(255,255,255,.55); }

/* footer */
footer { background: var(--sumi); color: #9a938a; padding: 54px 0; }
.foot { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; font-size: 12.5px; letter-spacing: .05em; }
.foot .flogo { font-family: var(--en); font-size: 20px; letter-spacing: .16em; color: var(--kinari); text-decoration: none; }
.foot .flogo b { color: var(--brass-bright); font-weight: 600; }
.foot a { color: #9a938a; text-decoration: none; }
.foot a:hover { color: var(--brass-bright); }

/* cta band (shared) */
.cta { background: var(--kinari); text-align: center; padding: 130px 0; border-top: 1px solid var(--line); }
.cta h2 {
  font-family: var(--serif); font-weight: 800; letter-spacing: .1em;
  font-size: clamp(26px, 4vw, 42px); margin-bottom: 30px;
}
.cta p { max-width: 600px; margin: 0 auto 52px; color: var(--sumi-soft); font-size: 14px; }

@media (max-width: 640px) {
  .nav-links a:not(.btn) { display: none; }
  section { padding: 80px 0; }
}

/* ---------- document pages (privacy / company) ---------- */
.doc-table { width: 100%; border-collapse: collapse; border-top: 1px solid var(--sumi); }
.doc-table th, .doc-table td { padding: 20px 4px; font-size: 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); line-height: 1.9; }
.doc-table th { font-family: var(--serif); font-weight: 700; letter-spacing: .08em; width: 220px; color: var(--sumi); }
.doc-table td { color: var(--sumi-soft); }
.doc-table .note { display: block; margin-top: 8px; font-size: 12.5px; color: var(--sumi-mute); }
@media (max-width: 700px) {
  .doc-table th, .doc-table td { display: block; width: auto; border-bottom: none; padding: 14px 4px 0; }
  .doc-table td { padding: 4px 4px 18px; border-bottom: 1px solid var(--line); }
}
.doc-body { max-width: 760px; }
.doc-body h2 { font-family: var(--serif); font-size: 17px; font-weight: 700; letter-spacing: .08em; margin: 44px 0 14px; padding-left: 16px; border-left: 2px solid var(--brass); }
.doc-body h2:first-child { margin-top: 0; }
.doc-body p { font-size: 14px; color: var(--sumi-soft); }
.doc-body p + p { margin-top: 14px; }
.doc-body ul { margin: 14px 0 0; padding-left: 0; list-style: none; }
.doc-body li { font-size: 14px; color: var(--sumi-soft); padding: 6px 0 6px 24px; position: relative; }
.doc-body li::before { content: "—"; position: absolute; left: 0; color: var(--brass); }
.doc-body strong { color: var(--sumi); }
.doc-date { margin-top: 48px; font-size: 12.5px; color: var(--sumi-mute); }

/* footer links */
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; }
.foot-links a { font-size: 12.5px; text-decoration: none; }