:root {
  --bg: #0a0908;
  --bg-2: #14110f;
  --bg-3: #1c1714;
  --fg: #f4ede4;
  --fg-mute: #8a847b;
  --fg-dim: #807a72;
  --gold: #c9a95a;
  --gold-bright: #e0c373;
  --gold-soft: rgba(201, 169, 90, 0.12);
  --gold-line: rgba(201, 169, 90, 0.3);
  --line: rgba(244, 237, 228, 0.08);
  --line-strong: rgba(244, 237, 228, 0.18);
  --serif: 'Shippori Mincho B1', serif;
  --sans: 'Zen Kaku Gothic New', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --pad-x: 3rem;
  --pad-y: 7rem;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg); color: var(--fg); font-family: var(--sans);
  font-weight: 300; line-height: 1.7; overflow-x: hidden; position: relative;
  min-height: 100vh;
  padding-left: env(safe-area-inset-left); padding-right: env(safe-area-inset-right);
}
body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.07 0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.5; mix-blend-mode: overlay;
}
.logo-mark { width: 1.5rem; height: 1.5rem; color: var(--fg); flex-shrink: 0; }
.logo-mark.gold { color: var(--gold); }

nav.top {
  position: fixed; top: 0; left: 0; right: 0; padding: 1.1rem 3rem;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 100; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 9, 8, 0.7); border-bottom: 1px solid var(--line);
  padding-top: max(1.1rem, env(safe-area-inset-top));
}
.brand-wrap { display: flex; align-items: center; gap: 0.65rem; text-decoration: none; color: var(--fg); }
.brand { font-family: var(--serif); font-size: 1.2rem; font-weight: 700; letter-spacing: 0.18em; }
.brand-en { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.35em; color: var(--gold); margin-left: 0.25rem; }
nav.top ul { display: flex; gap: 2rem; list-style: none; }
nav.top ul a {
  color: var(--fg); text-decoration: none; font-size: 0.7rem;
  letter-spacing: 0.3em; font-family: var(--mono); transition: color 0.3s;
  position: relative; padding: 0.5rem 0;
}
nav.top ul a:hover { color: var(--gold); }
nav.top ul a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--gold); transform: scaleX(0); transform-origin: left; transition: transform 0.3s;
}
nav.top ul a:hover::after { transform: scaleX(1); }

.hamburger {
  display: none; width: 48px; height: 48px; background: transparent; border: 0;
  cursor: pointer; position: relative; align-items: center; justify-content: center;
}
.hamburger span {
  position: absolute; width: 22px; height: 1.5px; background: var(--fg);
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger span:nth-child(1) { transform: translateY(-6px); }
.hamburger span:nth-child(3) { transform: translateY(6px); }
.hamburger.open span:nth-child(1) { transform: rotate(45deg); background: var(--gold); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg); background: var(--gold); }

.mobile-menu {
  display: none; position: fixed; inset: 0; background: rgba(10, 9, 8, 0.97);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); z-index: 99;
  flex-direction: column; justify-content: center; align-items: center;
  padding: 2rem; opacity: 0; pointer-events: none; transition: opacity 0.4s ease;
}
.mobile-menu.open { opacity: 1; pointer-events: auto; }
.mobile-menu ul { list-style: none; display: flex; flex-direction: column; gap: 1.4rem; text-align: center; }
.mobile-menu a {
  font-family: var(--serif); font-size: 1.5rem; color: var(--fg); text-decoration: none;
  letter-spacing: 0.15em; display: block; padding: 0.5rem 1rem; transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--gold); }
.mobile-menu a small {
  display: block; font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.3em;
  color: var(--gold); margin-top: 0.25rem; font-weight: 400;
}

.hero { min-height: 100vh; position: relative; display: flex; align-items: center; padding: 0 var(--pad-x); overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 75% 30%, rgba(201, 169, 90, 0.13), transparent 60%),
              radial-gradient(ellipse 60% 50% at 15% 85%, rgba(180, 60, 50, 0.08), transparent 60%),
              var(--bg);
  z-index: 0;
}
.hero-vertical {
  position: absolute; right: 4rem; top: 50%; transform: translateY(-50%);
  font-family: var(--serif); font-size: clamp(6rem, 13vw, 13rem); font-weight: 800;
  writing-mode: vertical-rl; letter-spacing: 0.25em; color: rgba(244, 237, 228, 0.04);
  z-index: 0; user-select: none; line-height: 1;
}
.hero-content { position: relative; z-index: 2; max-width: 60rem; width: 100%; }
.hero-tag {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.4em; color: var(--gold);
  margin-bottom: 1.75rem; display: flex; align-items: center; gap: 1rem;
  opacity: 0; animation: fadeInUp 1s ease 0.2s forwards;
}
.hero-tag::before { content: ''; width: 3rem; height: 1px; background: var(--gold); }
.hero h1 {
  font-family: var(--serif); font-size: clamp(2.4rem, 6.5vw, 5.6rem); font-weight: 800;
  line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 0;
  opacity: 0; animation: fadeInUp 1s ease 0.4s forwards;
}
.hero h1 .accent { color: var(--gold); font-style: italic; }
.hero h1 .en {
  display: block; font-family: var(--serif); font-size: 0.3em; font-weight: 400;
  letter-spacing: 0.28em; color: var(--fg-mute); margin-top: 1.5rem; font-style: italic;
}
.hero p.lead {
  font-size: 1rem; max-width: 38rem; color: var(--fg); margin: 2.25rem 0 2.75rem;
  line-height: 2; opacity: 0; animation: fadeInUp 1s ease 0.6s forwards;
}
.hero-actions {
  display: flex; gap: 0.9rem; flex-wrap: wrap; margin-bottom: 2.75rem;
  opacity: 0; animation: fadeInUp 1s ease 0.72s forwards;
}
.hero-cta {
  display: inline-flex; align-items: center; justify-content: center; min-height: 46px;
  padding: 0.85rem 1.35rem; border: 1px solid var(--gold-line); color: var(--gold);
  text-decoration: none; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.22em;
}
.hero-cta.primary { background: var(--gold); color: var(--bg); border-color: var(--gold); }
.hero-cta:hover { border-color: var(--gold); background: rgba(201, 169, 90, 0.08); }
.hero-cta.primary:hover { background: var(--gold-bright); }
.hero-meta {
  display: flex; gap: 3.5rem; font-family: var(--mono); font-size: 0.62rem;
  letter-spacing: 0.25em; color: var(--fg-mute); text-transform: uppercase;
  opacity: 0; animation: fadeInUp 1s ease 0.8s forwards; flex-wrap: wrap;
}
.hero-meta span strong {
  color: var(--gold); font-weight: 500; display: block; font-size: 1.5rem;
  font-family: var(--serif); letter-spacing: 0; margin-bottom: 0.35rem; font-style: normal;
}
.hero-meta .established-duo { line-height: 1.65; }
.hero-meta .established-duo strong:not(:first-child) { margin-top: 0.85rem; }
.scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.4em; color: var(--fg-mute);
  z-index: 2; opacity: 0; animation: fadeInUp 1.5s ease 1.4s forwards;
}
.scroll-hint::after {
  content: ''; display: block; width: 1px; height: 2.5rem; background: var(--gold);
  margin: 0.75rem auto 0; animation: scrollLine 2.5s ease-in-out infinite; transform-origin: top;
}
@keyframes fadeInUp { from { opacity: 0; transform: translateY(2rem); } to { opacity: 1; transform: translateY(0); } }
@keyframes scrollLine { 0%, 100% { transform: scaleY(1); opacity: 0.3; } 50% { transform: scaleY(0.4); opacity: 1; } }

/* 全セクション一律 8rem をやめ、画面幅に追従させる (Phase2 §22) */
section { padding-block: clamp(4.5rem, 7vw, 7.5rem); padding-inline: var(--pad-x); position: relative; z-index: 2; scroll-margin-top: 7rem; }
.section-num { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.4em; color: var(--gold); margin-bottom: 1.25rem; }
.section-title {
  font-family: var(--serif); font-size: clamp(1.8rem, 3.6vw, 3rem); font-weight: 700;
  letter-spacing: -0.01em; margin-bottom: 1rem; line-height: 1.3;
}
.section-title .en {
  display: block; font-size: 0.32em; letter-spacing: 0.3em; color: var(--fg-mute);
  margin-top: 0.85rem; font-weight: 400; font-style: italic;
}
.section-head { margin-bottom: 4.5rem; max-width: 55rem; }
.section-intro { font-size: 0.98rem; color: var(--fg); opacity: 0.85; line-height: 2; margin-top: 1.5rem; max-width: 42rem; }

/* JS が動いている時だけ隠す。
   素の .reveal { opacity: 0 } だと、JS が落ちた瞬間にページ本文が丸ごと消える。
   html.js は各ページ head のインラインスクリプトが付ける。 */
.js .reveal { opacity: 0; transform: translateY(2rem); transition: opacity 0.9s ease, transform 0.9s ease; }
.js .reveal.in { opacity: 1; transform: translateY(0); }

/* ABOUT */
.about-section { background: var(--bg); }
.about-text p { margin-bottom: 1.4rem; font-size: 0.98rem; line-height: 2; max-width: 44rem; }
.about-text p:first-child::first-letter {
  font-family: var(--serif); font-size: 4em; float: left; line-height: 0.9;
  margin-right: 0.5rem; margin-top: 0.1rem; color: var(--gold); font-weight: 700;
}
.about-sign { margin-top: 3rem; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.3em; color: var(--fg-mute); }
.about-sign strong {
  display: block; font-family: var(--serif); font-size: 1.1rem; color: var(--fg);
  letter-spacing: 0.1em; margin-bottom: 0.4rem; font-weight: 600;
}

/* ACTIVITIES */
.activities-section { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%); }
.act-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 1px; }
.act { background: var(--bg); padding: 3rem; transition: background 0.4s; }
.act:hover { background: var(--gold-soft); }
.act-num { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1.5rem; }
.act-title { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; margin-bottom: 0.4rem; letter-spacing: 0.02em; line-height: 1.4; }
.act-en { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.3em; color: var(--fg-mute); margin-bottom: 1.5rem; }
.act-desc { color: var(--fg); opacity: 0.88; font-size: 0.92rem; line-height: 1.95; }
.act-menu { margin-top: 1.5rem; display: grid; gap: 0.65rem; list-style: none; }
.act-menu li {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em; line-height: 1.7;
  color: var(--fg-mute); border-top: 1px dashed var(--line); padding-top: 0.65rem;
}
.act-menu strong { font-family: var(--serif); font-size: 0.9rem; letter-spacing: 0.02em; color: var(--fg); margin-right: 0.35rem; }
.act-full { background: var(--bg); padding: 3rem; border: 1px solid var(--line); border-top: 0; transition: background 0.4s; }
.act-full:hover { background: var(--gold-soft); }
.retouch-flow { margin-top: 2.5rem; display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 1.25rem; align-items: stretch; }
.retouch-step { border: 1px solid var(--gold-line); padding: 1.5rem 1.25rem; background: rgba(201, 169, 90, 0.03); }
.retouch-step .num { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 0.75rem; }
.retouch-step .tool { font-family: var(--serif); font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; letter-spacing: 0.03em; }
.retouch-step .body { font-family: var(--mono); font-size: 0.7rem; color: var(--fg-mute); letter-spacing: 0.05em; line-height: 1.7; }
.retouch-arrow { display: flex; align-items: center; justify-content: center; color: var(--gold); font-family: var(--mono); font-size: 1.2rem; }

/* NUMBERS */
.numbers-section { background: var(--bg-2); }
.numbers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.num-cell { background: var(--bg); padding: 2.5rem 2rem; }
.num-figure { font-family: var(--serif); font-size: 2.4rem; font-weight: 700; color: var(--gold); line-height: 1; letter-spacing: -0.02em; margin-bottom: 0.65rem; word-break: keep-all; }
.num-figure.tight { font-size: 1.95rem; letter-spacing: -0.03em; }
.num-figure small { font-size: 0.5em; color: var(--fg-mute); margin-left: 0.3rem; font-weight: 400; }
.num-label { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.25em; color: var(--fg-mute); margin-bottom: 0.5rem; }
.num-desc { font-size: 0.78rem; color: var(--fg-dim); line-height: 1.6; }
.numbers-asof {
  display: inline-block; font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.28em;
  color: var(--gold); border: 1px solid var(--gold-line); padding: 0.25rem 0.7rem;
  margin-left: 0.9rem; vertical-align: middle; white-space: nowrap;
}
.numbers-note { margin-top: 1.5rem; font-size: 0.78rem; color: var(--fg-dim); line-height: 1.9; max-width: 52rem; }
.studio-note {
  margin-top: 1.25rem; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em;
  color: var(--fg-mute); line-height: 2; max-width: 52rem;
}

/* BTOB CASES */
.btob-section { background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%); }
.service-lead {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 1px;
}
.service-kicker, .service-copy { background: var(--bg); padding: 2.75rem 2.5rem; }
.service-kicker .label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.32em; color: var(--gold); margin-bottom: 1rem; }
.service-kicker .title { font-family: var(--serif); font-size: 1.8rem; font-weight: 700; line-height: 1.45; letter-spacing: 0.03em; }
.service-copy p { font-size: 0.92rem; color: var(--fg); opacity: 0.88; line-height: 2.1; margin-bottom: 1rem; }
.service-copy p:last-child { margin-bottom: 0; }
.service-cta-row { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-top: 1.6rem; }
.service-cta {
  display: inline-flex; align-items: center; justify-content: center; min-height: 46px;
  padding: 0.85rem 1.35rem; border: 1px solid var(--gold-line); color: var(--gold);
  text-decoration: none; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.22em;
}
.service-cta.primary { background: var(--gold); color: var(--bg); border-color: var(--gold); }
.service-cta:hover { border-color: var(--gold); background: rgba(201, 169, 90, 0.08); }
.service-cta.primary:hover { background: var(--gold-bright); }
.service-tools { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 3rem; }
.service-tool { background: var(--bg); padding: 2.75rem 2.5rem; display: grid; grid-template-columns: minmax(15rem, 0.72fr) minmax(0, 1.28fr); gap: 2rem; }
.tool-head .num { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1.1rem; }
.tool-head .name { font-family: var(--serif); font-size: 1.45rem; font-weight: 700; line-height: 1.45; margin-bottom: 0.5rem; letter-spacing: 0.03em; }
.tool-head .en { font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.26em; color: var(--fg-mute); }
.tool-body .summary { font-size: 0.9rem; line-height: 2; color: var(--fg); opacity: 0.88; margin-bottom: 1.5rem; }
.ba-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.ba-box { background: var(--bg-2); padding: 1.4rem 1.25rem; }
.ba-label { font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.28em; color: var(--gold); margin-bottom: 0.75rem; }
.ba-text { font-size: 0.82rem; color: var(--fg); opacity: 0.84; line-height: 1.9; }
.tool-effect { margin-top: 1.2rem; padding-top: 1.2rem; border-top: 1px dashed var(--gold-line); font-family: var(--serif); font-size: 1rem; color: var(--gold-bright); line-height: 1.8; }
.effect-note { margin-top: 1rem; font-size: 0.76rem; color: var(--fg-mute); line-height: 1.8; }
.service-subhead { margin-top: 4rem; margin-bottom: 1.6rem; }
.service-subhead .tag { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.32em; color: var(--gold); margin-bottom: 0.75rem; }
.service-subhead .text { font-size: 0.92rem; color: var(--fg); opacity: 0.86; line-height: 2; max-width: 52rem; }
.adjunct-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.adjunct { background: var(--bg); padding: 1.8rem 1.5rem; }
.adjunct-title { font-family: var(--serif); font-size: 1rem; font-weight: 700; margin-bottom: 0.6rem; line-height: 1.5; }
.adjunct-desc { font-size: 0.78rem; color: var(--fg-mute); line-height: 1.8; }
.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.price-card { background: var(--bg); padding: 1.9rem 1.45rem; display: flex; flex-direction: column; min-height: 16rem; }
.price-step { font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.28em; color: var(--gold); margin-bottom: 1rem; }
.price-title { font-family: var(--serif); font-size: 1.05rem; font-weight: 700; margin-bottom: 0.75rem; line-height: 1.45; }
.price-desc { font-size: 0.78rem; color: var(--fg-mute); line-height: 1.8; margin-bottom: 1.2rem; }
.price-value { margin-top: auto; font-family: var(--serif); font-size: 1.25rem; color: var(--gold-bright); line-height: 1.35; }
.service-note { margin-top: 1.5rem; font-size: 0.82rem; color: var(--fg-mute); line-height: 1.9; border-left: 1px solid var(--gold-line); padding-left: 1.25rem; }
.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.flow-step { background: var(--bg); padding: 1.6rem 1.35rem; }
.flow-step-num { font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.28em; color: var(--gold); margin-bottom: 0.75rem; }
.flow-step-text { font-size: 0.8rem; color: var(--fg); opacity: 0.86; line-height: 1.8; }
.application-form {
  margin-top: 2rem; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
}
.form-field { background: var(--bg); padding: 1.35rem 1.25rem; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { display: block; font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.22em; color: var(--gold); margin-bottom: 0.75rem; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; min-height: 44px; background: var(--bg-2); color: var(--fg);
  border: 1px solid var(--line-strong); padding: 0.85rem 0.9rem; font-family: var(--sans);
  font-size: 0.9rem; outline: none; border-radius: 0;
}
.form-field textarea { min-height: 8.5rem; resize: vertical; line-height: 1.7; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--gold-line); }
.form-actions {
  grid-column: 1 / -1; background: var(--bg); padding: 1.5rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.form-submit {
  min-height: 48px; padding: 0.95rem 2rem; border: 1px solid var(--gold); background: transparent;
  color: var(--gold); font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.28em; cursor: pointer;
}
.form-submit:hover { background: var(--gold); color: var(--bg); }
.form-status { font-size: 0.82rem; color: var(--fg-mute); line-height: 1.8; max-width: 42rem; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.case-card { background: var(--bg); padding: 2.75rem 2.25rem; transition: background 0.4s; }
.case-card:hover { background: var(--gold-soft); }
.case-num { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1.25rem; }
.case-title { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; margin-bottom: 0.4rem; letter-spacing: 0.03em; line-height: 1.45; }
.case-en { font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.28em; color: var(--fg-mute); margin-bottom: 1.4rem; }
.case-desc { font-size: 0.9rem; color: var(--fg); opacity: 0.88; line-height: 2; }
.case-proof {
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 1px;
}
.case-proof-media { background: var(--bg); min-height: 18rem; overflow: hidden; }
.case-proof-media img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: top center; }
.case-proof-body { background: var(--bg); padding: 2.75rem 2.25rem; display: flex; flex-direction: column; justify-content: center; }
.case-proof-label { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1.2rem; }
.case-proof-title { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; line-height: 1.45; margin-bottom: 1rem; }
.case-proof-text { font-size: 0.88rem; color: var(--fg); opacity: 0.86; line-height: 2; }

/* STUDIO */
.studio-section { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%); }
.subsection-tag { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.4em; color: var(--gold); margin-bottom: 1.5rem; }
.subsection { margin-top: 4rem; padding-top: 4rem; border-top: 1px solid var(--line); }
.subsection:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.subsection-head { margin-bottom: 2.5rem; }
.subsection-desc { font-size: 0.95rem; color: var(--fg); opacity: 0.88; line-height: 2; max-width: 44rem; }
.gpu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.gpu-card { background: var(--bg); padding: 1.75rem 1.25rem; transition: background 0.3s; }
.gpu-card:hover { background: rgba(201, 169, 90, 0.04); }
.gpu-tier { font-family: var(--mono); font-size: 0.55rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1rem; padding-bottom: 0.6rem; border-bottom: 1px dashed var(--line); }
.gpu-name { font-family: var(--serif); font-size: 1.1rem; font-weight: 700; letter-spacing: 0.02em; margin-bottom: 0.4rem; }
.gpu-vram { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.15em; color: var(--gold); margin-bottom: 0.85rem; }
.gpu-role { font-size: 0.72rem; color: var(--fg-mute); line-height: 1.55; }

.tech { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.tech-cat { background: var(--bg); padding: 2.5rem 2rem; }
.tech-cat-title { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1.5rem; }
.tech-list { list-style: none; }
.tech-list li { font-family: var(--serif); font-size: 0.95rem; padding: 0.7rem 0; border-bottom: 1px dashed var(--line); color: var(--fg); letter-spacing: 0.02em; }
.tech-list li:last-child { border-bottom: 0; }

/* CHANNELS */
.channels-section { background: var(--bg); }
.channel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.channel {
  border: 1px solid var(--line-strong); padding: 1.85rem 1.65rem; background: var(--bg);
  transition: border-color 0.4s, transform 0.4s; text-decoration: none; color: var(--fg);
  display: flex; flex-direction: column; gap: 0.6rem; min-height: 9rem;
}
.channel:hover { border-color: var(--gold); transform: translateY(-3px); }
.channel.main { border-color: var(--gold); background: linear-gradient(160deg, rgba(201,169,90,0.06), transparent); grid-column: span 3; }
.channel.feature { grid-column: span 2; }
.channel-media {
  margin: -1.85rem -1.65rem 1rem; aspect-ratio: 16 / 9; overflow: hidden;
  border-bottom: 1px solid var(--line-strong); background: var(--bg-2);
}
.channel.main .channel-media { aspect-ratio: 21 / 8; }
.channel-media img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center; filter: saturate(0.92) contrast(0.96) brightness(0.86); }
.channel-media.contain img { object-fit: contain; object-position: center; background: var(--bg-2); }
.channel-tag { font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.35em; color: var(--gold); }
.channel-name { font-family: var(--serif); font-size: 1.15rem; font-weight: 700; letter-spacing: 0.04em; }
.channel.main .channel-name { font-size: 1.4rem; }
.channel-sub { font-size: 0.82rem; color: var(--fg-mute); line-height: 1.6; }
.channel-url { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.1em; color: var(--fg-dim); margin-top: auto; word-break: break-all; }
.adult-links { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: auto; padding-top: 0.6rem; }
.adult-links a {
  font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.18em; color: var(--fg-dim);
  border: 1px solid var(--line-strong); padding: 0.35rem 0.55rem; text-decoration: none;
}
.adult-links a:hover { color: var(--gold); border-color: var(--gold-line); }
.channel-divider {
  grid-column: 1 / -1; display: flex; align-items: center; gap: 1rem;
  font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.35em; color: var(--fg-dim);
  margin: 0.5rem 0;
}
.channel-divider::before, .channel-divider::after { content: ''; flex: 1; height: 1px; background: var(--line-strong); }
.channels-note { margin-top: 2.5rem; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.15em; color: var(--fg-mute); }

/* INQUIRIES */
.inquiries-section { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%); }
.solution-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 3rem; }
.solution { background: var(--bg); padding: 2.25rem 2rem; }
.solution-label { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1rem; }
.solution-body { font-size: 0.92rem; color: var(--fg); opacity: 0.88; line-height: 2; }
.inq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.inq { background: var(--bg); padding: 2.75rem 2.25rem; transition: background 0.4s; }
.inq:hover { background: var(--gold-soft); }
.inq-num { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1.25rem; }
.inq-title { font-family: var(--serif); font-size: 1.4rem; font-weight: 700; margin-bottom: 0.4rem; letter-spacing: 0.03em; }
.inq-en { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--fg-mute); margin-bottom: 1.4rem; }
.inq-desc { font-size: 0.9rem; color: var(--fg); opacity: 0.88; line-height: 2; }
.inq-desc a { color: var(--gold); text-decoration: none; border-bottom: 1px solid var(--gold-line); }
.inq-desc a:hover { color: var(--gold-bright); border-color: var(--gold); }
.inq-note {
  margin-top: 3rem; padding: 2.25rem 2.5rem; border: 1px solid var(--gold-line);
  background: rgba(201, 169, 90, 0.04); font-size: 0.88rem; line-height: 2; color: var(--fg);
}
.inq-note p { margin-bottom: 1rem; }
.inq-note p:last-child { margin-bottom: 0; }

/* CONTACT */
.contact-section { text-align: center; background: var(--bg-2); border-top: 1px solid var(--line-strong); padding: 8rem 3rem; }
.contact-num { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.4em; color: var(--gold); margin-bottom: 1.5rem; }
.contact-title { font-family: var(--serif); font-size: clamp(2rem, 5vw, 4rem); font-weight: 700; margin-bottom: 1rem; line-height: 1.2; letter-spacing: -0.01em; }
.contact-title .en { display: block; font-size: 0.32em; letter-spacing: 0.3em; color: var(--fg-mute); margin-top: 0.85rem; font-weight: 400; font-style: italic; }
.contact-cta {
  display: inline-block; margin: 2.5rem 0 3rem; padding: 1.25rem 3.5rem;
  border: 1px solid var(--gold); color: var(--gold); font-family: var(--mono);
  font-size: 0.75rem; letter-spacing: 0.35em; text-decoration: none;
  transition: all 0.4s; position: relative; overflow: hidden; min-height: 48px;
}
.contact-cta::before { content: ''; position: absolute; inset: 0; background: var(--gold); transform: translateX(-100%); transition: transform 0.4s ease; }
.contact-cta span { position: relative; z-index: 1; transition: color 0.4s; }
.contact-cta:hover::before { transform: translateX(0); }
.contact-cta:hover span { color: var(--bg); }
.company-info { font-size: 0.92rem; line-height: 2; color: var(--fg); opacity: 0.85; }
.company-info strong { font-family: var(--serif); font-size: 1.1rem; font-weight: 600; letter-spacing: 0.05em; display: block; margin-bottom: 0.5rem; }
.contact-closing {
  margin-top: 3rem; font-family: var(--serif); font-style: italic; color: var(--fg-mute);
  font-size: 1rem; line-height: 1.9; max-width: 36rem; margin-left: auto; margin-right: auto;
}

footer { padding: 3rem 3rem 2rem; border-top: 1px solid var(--line); position: relative; z-index: 2; padding-bottom: max(2rem, env(safe-area-inset-bottom)); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; margin-bottom: 2.5rem; }
.footer-brand .brand { font-size: 1.3rem; }
.footer-tagline { font-family: var(--serif); font-size: 0.85rem; font-style: italic; color: var(--fg-mute); margin-top: 0.75rem; letter-spacing: 0.05em; }
.footer-col h4 { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.3em; color: var(--gold); margin-bottom: 1rem; font-weight: 500; text-transform: uppercase; }
.footer-col p, .footer-col a { font-size: 0.78rem; color: var(--fg-mute); line-height: 1.85; text-decoration: none; display: block; }
.footer-col a:hover { color: var(--gold); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 1.75rem; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 0.62rem; color: var(--fg-dim); letter-spacing: 0.25em; text-transform: uppercase; }

@media (max-width: 1280px) {
  .gpu-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
  :root { --pad-x: 2rem; --pad-y: 6rem; }
  .act-grid { grid-template-columns: 1fr; }
  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .channel-grid { grid-template-columns: repeat(2, 1fr); }
  .channel.main { grid-column: span 2; }
  .channel.feature { grid-column: span 1; }
  .case-grid { grid-template-columns: 1fr; }
  .case-proof { grid-template-columns: 1fr; }
  .gpu-grid { grid-template-columns: repeat(2, 1fr); }
  .tech { grid-template-columns: repeat(2, 1fr); }
  .solution-grid { grid-template-columns: 1fr; }
  .inq-grid { grid-template-columns: 1fr; }
  .service-lead { grid-template-columns: 1fr; }
  .service-tool { grid-template-columns: 1fr; }
  .adjunct-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .retouch-flow { grid-template-columns: 1fr; }
  .retouch-arrow { transform: rotate(90deg); padding: 0.25rem 0; }
}
@media (max-width: 768px) {
  :root { --pad-x: 1.5rem; --pad-y: 4.5rem; }
  nav.top { padding: 0.85rem 1.5rem; padding-top: max(0.85rem, env(safe-area-inset-top)); }
  nav.top ul { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }
  .hero { padding: 5rem 1.5rem 4rem; min-height: 90vh; }
  .hero-vertical { right: -2rem; font-size: 8rem; opacity: 0.55; }
  .hero h1 { font-size: clamp(2rem, 9vw, 3rem); }
  .hero h1 .en { font-size: 0.45em; letter-spacing: 0.2em; margin-top: 1rem; }
  .hero p.lead { font-size: 0.95rem; line-height: 1.95; margin: 1.75rem 0 2.25rem; }
  .hero-meta { flex-direction: column; gap: 1.25rem; }
  .hero-meta span strong { font-size: 1.3rem; }
  .scroll-hint { display: none; }
  .section-head { margin-bottom: 3rem; }
  .section-title { font-size: clamp(1.5rem, 6vw, 2rem); }
  .section-title .en { font-size: 0.42em; letter-spacing: 0.22em; }
  .act { padding: 2rem 1.5rem; }
  .act-full { padding: 2rem 1.5rem; }
  .act-title { font-size: 1.3rem; }
  .numbers-grid { grid-template-columns: 1fr 1fr; }
  .num-cell { padding: 1.75rem 1.25rem; }
  .num-figure { font-size: 1.85rem; }
  .num-figure.tight { font-size: 1.45rem; }
  .gpu-grid { grid-template-columns: 1fr 1fr; }
  .tech { grid-template-columns: 1fr 1fr; }
  .tech-cat { padding: 2rem 1.5rem; }
  .channel-grid { grid-template-columns: 1fr; }
  .channel.main { grid-column: span 1; }
  .channel.main .channel-media { aspect-ratio: 16 / 9; }
  .case-proof-body { padding: 2rem 1.5rem; }
  .case-proof-media { min-height: 13rem; }
  .service-kicker, .service-copy, .service-tool { padding: 2rem 1.5rem; }
  .ba-grid { grid-template-columns: 1fr; }
  .adjunct-grid, .pricing-grid, .flow-steps, .application-form { grid-template-columns: 1fr; }
  .form-field.full, .form-actions { grid-column: auto; }
  .inq { padding: 2rem 1.5rem; }
  .inq-title { font-size: 1.2rem; }
  .inq-note { padding: 1.5rem 1.5rem; }
  .about-text p:first-child::first-letter { font-size: 3em; }
  .contact-section { padding: 4.5rem 1.5rem; }
  footer { padding: 2.5rem 1.5rem 2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; margin-bottom: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}
@media (max-width: 400px) {
  .numbers-grid { grid-template-columns: 1fr; }
  .gpu-grid { grid-template-columns: 1fr; }
  .tech { grid-template-columns: 1fr; }
}
.legal-section { padding: calc(var(--pad-y) + 4rem) var(--pad-x) var(--pad-y); max-width: 62rem; margin: 0 auto; }
.legal-body { font-size: 0.92rem; line-height: 2.1; color: var(--fg); opacity: 0.9; }
.legal-body h2 {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.3em; color: var(--gold);
  margin: 3rem 0 1rem; font-weight: 500;
}
.legal-body h2:first-of-type { margin-top: 0; }
.legal-body p { margin-bottom: 1.2rem; }
.legal-body ul { margin: 0 0 1.2rem 1.2rem; }
.legal-body li { margin-bottom: 0.55rem; }
.legal-body a { color: var(--gold); }
.legal-meta {
  margin-top: 3.5rem; padding-top: 2rem; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.2em; color: var(--fg-mute); line-height: 2.2;
}
@media (max-width: 768px) {
  .legal-section { padding: 7rem 1.5rem 4.5rem; }
  .legal-body { font-size: 0.88rem; }
}


/* Phase2.1 accessibility polish */
.skip-link { position: fixed; left: 1rem; top: 1rem; z-index: 9999; padding: 0.7rem 1rem; background: var(--gold); color: var(--bg); text-decoration: none; font-family: var(--mono); font-size: 0.75rem; transform: translateY(-180%); transition: transform 0.2s ease; }
.skip-link:focus { transform: translateY(0); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }