/* =========================================================
   NFT CLUB, Inc. — corporate site
   Palette: 墨(sumi) / 生成り(kinari) / 苔緑(koke) / 金(kin)
   ========================================================= */

:root {
  --sumi:      #12130f;
  --sumi-soft: #24261f;
  --kinari:    #f6f4ee;
  --kinari-2:  #eceada;
  --paper:     #fffdf8;
  --koke:      #2f4f3f;
  --koke-lt:   #4a7160;
  --kin:       #a9873f;
  --kin-lt:    #e8c988;
  --ink-60:    rgba(18, 19, 15, .62);
  --ink-40:    rgba(18, 19, 15, .40);
  --ink-12:    rgba(18, 19, 15, .12);
  --ink-06:    rgba(18, 19, 15, .06);
  --on-dark-70: rgba(246, 244, 238, .72);
  --on-dark-40: rgba(246, 244, 238, .38);
  --on-dark-14: rgba(246, 244, 238, .14);

  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans:  "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", system-ui, sans-serif;

  --wrap: 1120px;
  --pad: clamp(20px, 5vw, 56px);
  /* full-bleed elements can use --gutter to land on the same text column as .wrap */
  --gutter: max(var(--pad), calc((100% - var(--wrap)) / 2 + var(--pad)));
  --sec-y: clamp(72px, 10vw, 140px);
  --r: 2px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
  /* the off-canvas menu parks itself past the right edge — clip, don't scroll */
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.95;
  color: var(--sumi);
  background: var(--kinari);
  font-feature-settings: "palt" 1;
  letter-spacing: .02em;
  overflow-x: clip;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }

/* ---------- 準備中バナー ---------- */
.notice {
  background: var(--koke);
  color: var(--kinari);
  text-align: center;
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.7;
  padding: 9px var(--pad);
}
.notice p { margin: 0; }
.notice strong { color: #e8c988; font-weight: 700; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px var(--gutter);
  background: rgba(246, 244, 238, .86);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--ink-12);
}

.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark { width: 36px; height: 36px; flex: none; }
.brand-mark svg { width: 100%; height: 100%; }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name b {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .14em;
}
.brand-name i {
  font-style: normal;
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--ink-40);
  margin-top: 2px;
}

.site-nav { display: flex; align-items: center; gap: clamp(12px, 1.8vw, 26px); }
.site-nav a {
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--ink-60);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color .2s, border-color .2s;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--sumi); border-bottom-color: var(--kin); }
.site-nav .nav-cta {
  background: var(--sumi);
  color: var(--kinari);
  padding: 9px 20px;
  border-radius: 999px;
  border-bottom: 0;
}
.site-nav .nav-cta:hover { background: var(--koke); color: #fff; border-bottom-color: transparent; }

.nav-toggle { display: none; }
.nav-burger { display: none; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--sumi);
  color: var(--kinari);
  padding: clamp(72px, 12vw, 148px) var(--gutter) 0;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(169, 135, 63, .30), transparent 58%),
    radial-gradient(100% 80% at 8% 100%, rgba(47, 79, 63, .55), transparent 60%),
    linear-gradient(180deg, #171812 0%, #12130f 100%);
}
.hero-bg::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 4%;
  width: min(560px, 62vw);
  aspect-ratio: 1;
  border: 1px solid rgba(246, 244, 238, .10);
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(169, 135, 63, .10);
}
.hero-inner { position: relative; }

.eyebrow {
  margin: 0 0 26px;
  font-size: 11px;
  letter-spacing: .26em;
  color: rgba(232, 201, 136, .85);
  font-weight: 500;
}

.hero-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(40px, 8.5vw, 92px);
  line-height: 1.18;
  letter-spacing: .02em;
  margin: 0 0 30px;
}
.hero-title span { display: block; }
.hero-title span:last-child { color: #e8c988; }

.hero-lead {
  margin: 0 0 40px;
  max-width: 46em;
  color: var(--on-dark-70);
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 2.15;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; padding-bottom: clamp(64px, 9vw, 110px); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: .06em;
  text-decoration: none;
  transition: transform .2s, background .2s, color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: #e8c988; color: var(--sumi); font-weight: 700; }
.btn-primary:hover { background: #f2d89f; }
.btn-ghost { border: 1px solid var(--on-dark-40); color: var(--kinari); }
.btn-ghost:hover { border-color: #e8c988; color: #e8c988; }
.btn-lg { padding: 18px 44px; font-size: 15px; }
.ext { font-size: 12px; opacity: .8; }

.hero-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--on-dark-14);
}
.hero-stats dl {
  margin: 0;
  padding: 30px 26px 34px;
  border-right: 1px solid var(--on-dark-14);
}
.hero-stats dl:first-child { padding-left: 0; }
.hero-stats dl:last-child { border-right: 0; padding-right: 0; }
.hero-stats dt { font-size: 11px; letter-spacing: .16em; color: var(--on-dark-40); }
.hero-stats dd {
  margin: 8px 0 4px;
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.1;
  color: #e8c988;
}
.hero-stats dd small { font-size: 13px; letter-spacing: .04em; margin-left: 4px; color: var(--on-dark-70); font-family: var(--sans); }
.hero-stats p { margin: 0; font-size: 12px; color: var(--on-dark-70); letter-spacing: .04em; }

/* ---------- section shell ---------- */
.section { padding-block: var(--sec-y); position: relative; }
.section-dark { background: var(--sumi); color: var(--kinari); }
.section-dark .prose p { color: var(--on-dark-70); }
.section-dark .lead { color: var(--kinari); }
.section-dark .sec-num { color: var(--on-dark-40); }
.section-dark .sec-title { color: var(--kinari); }
.section-dark .sec-title em { color: rgba(232, 201, 136, .8); }

.grid-2 {
  display: grid;
  grid-template-columns: minmax(200px, 300px) 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  margin-bottom: clamp(44px, 6vw, 72px);
}

.sec-num {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--ink-40);
  font-weight: 500;
}
.sec-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .06em;
}
.sec-title em {
  display: block;
  font-style: normal;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--kin);
  margin-top: 10px;
  font-weight: 500;
}
.sec-head-center { text-align: center; margin-bottom: clamp(40px, 6vw, 68px); }

.prose p { margin: 0 0 1.45em; color: var(--ink-60); }
.prose p:last-child { margin-bottom: 0; }
.prose .lead {
  font-family: var(--serif);
  font-size: clamp(18px, 2.3vw, 25px);
  line-height: 1.85;
  color: var(--sumi);
  margin-bottom: 1.2em;
  letter-spacing: .03em;
}
.prose a { color: var(--koke); text-underline-offset: 4px; text-decoration-thickness: 1px; }
.prose a:hover { color: var(--kin); }

/* ---------- values ---------- */
.values {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--ink-12);
  border: 1px solid var(--ink-12);
}
.values li { background: var(--paper); padding: clamp(28px, 3.4vw, 40px); }
.values h3 {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .04em;
  position: relative;
  padding-top: 20px;
}
.values h3::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 28px; height: 2px;
  background: var(--kin);
}
.values p { margin: 0; font-size: 14px; color: var(--ink-60); }

/* ---------- business ---------- */
.biz-list { display: grid; gap: 0; }
.biz {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: clamp(16px, 3vw, 40px);
  padding: clamp(30px, 4vw, 46px) 0;
  border-top: 1px solid var(--on-dark-14);
}
.biz:last-child { border-bottom: 1px solid var(--on-dark-14); }
.biz-no {
  margin: 0;
  font-family: var(--serif);
  font-size: 28px;
  line-height: 1.2;
  color: rgba(232, 201, 136, .55);
}
.biz-body h3 {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 600;
  letter-spacing: .05em;
  line-height: 1.45;
}
.biz-en {
  display: block;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--on-dark-40);
  margin-top: 9px;
  font-weight: 400;
}
.biz-body p { margin: 0; color: var(--on-dark-70); font-size: 15px; max-width: 60em; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 13px;
  letter-spacing: .08em;
  text-decoration: none;
  color: #e8c988;
  border-bottom: 1px solid rgba(232, 201, 136, .4);
  padding-bottom: 3px;
  transition: gap .2s, border-color .2s;
}
.link-arrow::after { content: "→"; font-size: 12px; }
.link-arrow:hover { gap: 13px; border-bottom-color: #e8c988; }

/* ---------- stats band ---------- */
.stat-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--ink-12);
  border: 1px solid var(--ink-12);
}
.stat { background: var(--paper); padding: clamp(26px, 3.4vw, 38px); }
.stat-num {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(32px, 4.6vw, 46px);
  line-height: 1.05;
  color: var(--koke);
  letter-spacing: .01em;
}
.stat-num small { font-size: 15px; letter-spacing: .04em; margin-left: 3px; font-family: var(--sans); color: var(--ink-60); }
.stat-label { margin: 0; font-size: 13px; line-height: 1.85; color: var(--sumi); }
.stat-label span { color: var(--ink-40); font-size: 12px; }

/* ---------- quotes ---------- */
.section-quote { background: var(--kinari-2); }
.quotes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: clamp(20px, 3vw, 32px);
}
.quote {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--ink-12);
  padding: clamp(30px, 4vw, 46px);
  position: relative;
  display: flex;
  flex-direction: column;
}
.quote::before {
  content: "“";
  position: absolute;
  top: 6px; right: 24px;
  font-family: var(--serif);
  font-size: 92px;
  line-height: 1;
  color: rgba(169, 135, 63, .18);
}
.quotes-single { max-width: 760px; margin-inline: auto; }
.quotes-single .quote { padding: clamp(34px, 5vw, 60px); }

.quote blockquote { margin: 0 0 26px; flex: 1; }
.quote blockquote p {
  margin: 0 0 1.3em;
  font-size: 15px;
  line-height: 2.1;
  color: var(--ink-60);
}
.quote blockquote p:last-child { margin-bottom: 0; }
.quote figcaption { border-top: 1px solid var(--ink-12); padding-top: 20px; }
.q-role { display: block; font-size: 11.5px; letter-spacing: .08em; color: var(--ink-40); margin-bottom: 6px; }
.q-name {
  display: block;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .1em;
}

/* ---------- group chart ---------- */
.group-chart { display: grid; justify-items: center; }
.gc-parent {
  background: var(--sumi);
  color: var(--kinari);
  padding: 26px 40px;
  text-align: center;
  min-width: min(420px, 100%);
  border-radius: var(--r);
}
.gc-cap { margin: 0 0 8px; font-size: 10.5px; letter-spacing: .24em; color: rgba(232, 201, 136, .85); }
.gc-parent .gc-name { color: var(--kinari); }
.gc-parent .gc-desc { color: var(--on-dark-70); }
.gc-line { width: 1px; height: 46px; background: var(--ink-12); }
.gc-children {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--ink-12);
  border: 1px solid var(--ink-12);
}
.gc-children li {
  background: var(--paper);
  padding: clamp(24px, 3vw, 32px);
  text-align: center;
  position: relative;
}
.gc-children li.is-self { background: #fff; box-shadow: inset 0 3px 0 var(--kin); }
.gc-share {
  margin: 0 0 10px;
  display: inline-block;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-40);
  border: 1px solid var(--ink-12);
  border-radius: 999px;
  padding: 3px 13px;
}
.is-self .gc-share { color: var(--kin); border-color: rgba(169, 135, 63, .45); font-weight: 700; }
.gc-name {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .05em;
  line-height: 1.5;
}
.gc-desc { margin: 0; font-size: 12.5px; line-height: 1.8; color: var(--ink-60); }
.gc-desc span { display: block; color: var(--ink-40); font-size: 11.5px; margin-top: 6px; letter-spacing: .06em; }

/* ---------- timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: clamp(16px, 3vw, 40px);
  padding: 26px 0 30px;
  border-top: 1px solid var(--on-dark-14);
  position: relative;
}
.timeline li:last-child { border-bottom: 1px solid var(--on-dark-14); }
.tl-date {
  margin: 0;
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.5;
  color: rgba(232, 201, 136, .9);
  letter-spacing: .04em;
}
.tl-date span { font-family: var(--sans); font-size: 12.5px; letter-spacing: .06em; margin-left: 3px; color: var(--on-dark-70); }
.tl-body h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.65;
}
.tl-body p { margin: 0; font-size: 14px; color: var(--on-dark-70); max-width: 62em; }
.timeline li.is-key .tl-body h3 { color: #e8c988; }
.timeline li.is-future { opacity: .72; }
.timeline li.is-future .tl-body h3::after {
  content: "予定";
  font-size: 10px;
  letter-spacing: .12em;
  border: 1px solid var(--on-dark-40);
  border-radius: 999px;
  padding: 2px 9px;
  margin-left: 10px;
  vertical-align: middle;
  color: var(--on-dark-70);
}
.tl-links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 14px !important; }
.tl-links a {
  font-size: 12.5px;
  color: #e8c988;
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 201, 136, .35);
  padding-bottom: 2px;
}
.tl-links a:hover { border-bottom-color: #e8c988; }
.tl-links a::after { content: " ↗"; font-size: 10px; }

/* ---------- company table ---------- */
.company-table { width: 100%; border-collapse: collapse; border-top: 1px solid var(--ink-12); }
.company-table th,
.company-table td {
  text-align: left;
  vertical-align: top;
  padding: 20px 8px 20px 0;
  border-bottom: 1px solid var(--ink-12);
  font-size: 14.5px;
  line-height: 1.95;
}
.company-table th {
  width: 190px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--ink-40);
  font-size: 13px;
  padding-top: 22px;
}
.company-table td a { color: var(--koke); text-underline-offset: 4px; }

.related { margin-top: clamp(44px, 6vw, 70px); }
.related-title {
  margin: 0 0 20px;
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--ink-40);
}
.related ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--ink-12);
  border: 1px solid var(--ink-12);
}
.related li { background: var(--paper); padding: clamp(24px, 3vw, 32px); }
.rc-name { margin: 0 0 8px; font-family: var(--serif); font-size: 18px; font-weight: 600; letter-spacing: .05em; }
.rc-meta { margin: 0; font-size: 12.5px; line-height: 1.9; color: var(--ink-60); }
.related .link-arrow { color: var(--koke); border-bottom-color: rgba(47, 79, 63, .3); }
.related .link-arrow:hover { border-bottom-color: var(--koke); }

/* ---------- CTA ---------- */
.section-cta {
  background:
    radial-gradient(90% 120% at 50% 0%, rgba(47, 79, 63, .95), transparent 70%),
    var(--sumi);
  color: var(--kinari);
  text-align: center;
}
.cta-inner { max-width: 720px; margin-inline: auto; }
.cta-title {
  margin: 0 0 22px;
  font-family: var(--serif);
  font-size: clamp(26px, 4.2vw, 44px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .04em;
}
.cta-text { margin: 0 0 38px; color: var(--on-dark-70); font-size: 15px; }
.cta-note { margin: 22px 0 0; font-size: 12px; color: var(--on-dark-40); }

/* ---------- footer ---------- */
.site-footer { background: #0c0d0a; color: var(--kinari); padding: clamp(48px, 7vw, 80px) 0 28px; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: clamp(28px, 5vw, 60px);
  padding-bottom: 44px;
  border-bottom: 1px solid var(--on-dark-14);
}
.f-logo {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: .18em;
  font-weight: 700;
}
.f-tag { margin: 0; font-size: 13px; color: var(--on-dark-40); letter-spacing: .06em; }
.f-nav { display: flex; flex-direction: column; gap: 11px; }
.f-nav-title { margin: 0 0 4px; font-size: 10.5px; letter-spacing: .24em; color: rgba(232, 201, 136, .7); }
.f-nav a { font-size: 13px; color: var(--on-dark-70); text-decoration: none; width: fit-content; transition: color .2s; }
.f-nav a:hover { color: #e8c988; }
.copyright {
  margin: 22px 0 0;
  padding-inline: var(--gutter);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--on-dark-40);
}

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .8s ease, transform .8s cubic-bezier(.22,.61,.36,1); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
.sp { display: none; }

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .f-brand { grid-column: 1 / -1; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stats dl { border-right: 0; border-bottom: 1px solid var(--on-dark-14); padding: 22px 0; }
  .hero-stats dl:last-child { border-bottom: 0; }

  /* mobile nav */
  .nav-burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px; height: 40px;
    cursor: pointer;
    order: 3;
    z-index: 70;
  }
  .nav-burger span { display: block; height: 1.5px; background: var(--sumi); transition: transform .3s, opacity .2s; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  .site-nav {
    position: fixed;
    inset: 0;
    background: var(--kinari);
    flex-direction: column;
    justify-content: center;
    gap: 22px;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .35s cubic-bezier(.22,.61,.36,1), visibility 0s .35s;
    z-index: 65;
  }
  .nav-toggle:checked ~ .site-nav {
    transform: none;
    visibility: visible;
    transition: transform .35s cubic-bezier(.22,.61,.36,1), visibility 0s;
  }
  .site-nav a { font-size: 17px; font-family: var(--serif); letter-spacing: .1em; }
  .site-nav .nav-cta { margin-top: 8px; font-family: var(--sans); font-size: 14px; }
}

@media (max-width: 620px) {
  body { font-size: 15px; line-height: 1.9; }
  .pc { display: none; }
  .sp { display: inline; }
  .biz { grid-template-columns: 1fr; gap: 6px; }
  .biz-no { font-size: 20px; }
  .timeline li { grid-template-columns: 1fr; gap: 8px; }
  .company-table tbody, .company-table tr, .company-table th, .company-table td { display: block; width: auto; }
  .company-table th { border-bottom: 0; padding-bottom: 0; }
  .company-table td { padding-top: 4px; }
  .footer-inner { grid-template-columns: 1fr; }
  .quote::before { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover { transform: none; }
}