/* ============================================================
   学半 GAKUHAN ── vision 共通スタイル
   A Worthy Tomorrow のトンマナ踏襲：明朝・余白・波形・静けさ
   ============================================================ */
:root {
  --ink: #1f1c19;
  --ink-2: #4d4843;
  --ink-3: #8a847d;
  --paper: #ffffff;
  --paper-2: #faf9f7;
  --rule: #e6e2dc;
  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Hiragino Sans", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  line-height: 2.3;
  letter-spacing: .08em;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ============ ナビ ============ */
header.gnav {
  position: absolute; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 26px 40px 0;
}
header.gnav.on-paper { position: static; padding-bottom: 20px; border-bottom: 1px solid var(--rule); }
.brand-mark { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.brand-mark svg { display: block; }
.brand-mark .romaji { font-size: 9px; letter-spacing: .34em; color: #fff; font-family: var(--sans); font-weight: 300; }
header.gnav.on-paper .brand-mark .romaji { color: var(--ink-2); }
nav.menu { display: flex; gap: 40px; padding-top: 6px; flex-wrap: wrap; }
nav.menu a { text-align: center; color: #fff; }
header.gnav.on-paper nav.menu a { color: var(--ink); }
nav.menu .jp { display: block; font-size: 13px; letter-spacing: .16em; }
nav.menu .en { display: block; font-size: 9px; letter-spacing: .16em; font-family: var(--sans); font-weight: 300; opacity: .8; margin-top: 2px; }
nav.menu a:hover { opacity: .65; }
nav.menu a.cur .jp { border-bottom: 1px solid currentColor; padding-bottom: 2px; }
@media (max-width: 860px) {
  header.gnav { padding: 18px 20px 0; }
  nav.menu { gap: 18px; }
  nav.menu .en { display: none; }
  nav.menu .jp { font-size: 11.5px; }
}

/* ============ 記事ページ共通 ============ */
.page-head {
  padding: 84px 0 40px;
  text-align: center;
}
.page-head h1 { font-size: clamp(24px, 3.6vw, 33px); font-weight: 500; letter-spacing: .28em; text-indent: .28em; }
.page-head .en { font-family: var(--sans); font-weight: 300; font-size: 10px; letter-spacing: .34em; color: var(--ink-3); margin-top: 12px; }
article.doc { max-width: 780px; margin: 0 auto; padding: 20px 28px 130px; }
article.doc h2 {
  font-size: clamp(18px, 2.4vw, 23px); font-weight: 600; letter-spacing: .18em;
  margin: 78px 0 34px; text-align: center;
}
article.doc h2:first-of-type { margin-top: 30px; }
article.doc p { font-size: clamp(14px, 1.6vw, 16px); margin-bottom: 2em; }
article.doc .photo { margin: 54px 0; position: relative; }
article.doc .photo img { width: 100%; }

/* 憲章の「である。ただし、」対句 */
.tenet { margin-bottom: 44px; }
.tenet .main { font-size: clamp(15px, 1.8vw, 17.5px); font-weight: 600; letter-spacing: .1em; }
.tenet .tadashi { font-size: clamp(13px, 1.5vw, 15px); color: var(--ink-2); margin-top: 8px; padding-left: 1.2em; }
.tenet .tadashi::before { content: "ただし、"; color: var(--ink-3); }

/* 年表 */
.year-block { margin-bottom: 64px; }
.year-block .y { font-size: clamp(20px, 2.6vw, 26px); font-weight: 500; letter-spacing: .3em; text-align: center; margin-bottom: 34px; color: var(--ink-2); }
.j-item { display: grid; grid-template-columns: 84px 1fr; gap: 22px; padding: 16px 0; border-bottom: 1px solid var(--rule); }
.j-item:first-of-type { border-top: 1px solid var(--rule); }
.j-item .when { font-size: 12px; letter-spacing: .12em; color: var(--ink-3); padding-top: 5px; font-family: var(--sans); font-weight: 300; }
.j-item .what { font-size: 14.5px; line-height: 2.1; }
.j-item .what b { font-weight: 600; }
@media (max-width: 640px) { .j-item { grid-template-columns: 64px 1fr; gap: 14px; } }

/* works */
.work-row {
  max-width: 940px; margin: 0 auto;
  padding: 48px 8px;
  border-top: 1px solid var(--rule);
  display: grid; grid-template-columns: 190px 1fr; gap: 34px;
}
.work-row:last-of-type { border-bottom: 1px solid var(--rule); }
.work-row .who { font-size: 12.5px; letter-spacing: .22em; color: var(--ink-3); padding-top: 8px; line-height: 2; }
.work-row h3 { font-size: clamp(18px, 2.2vw, 22px); font-weight: 600; letter-spacing: .12em; margin-bottom: 14px; line-height: 1.9; }
.work-row p { font-size: 14px; color: var(--ink-2); line-height: 2.3; margin-bottom: 14px; }
.work-row .price-line { font-family: var(--sans); font-weight: 300; font-size: 12.5px; color: var(--ink-2); letter-spacing: .08em; border-top: 1px dashed var(--rule); padding-top: 14px; }
.work-row .price-line b { font-family: var(--serif); font-weight: 600; font-size: 15px; }
@media (max-width: 720px) { .work-row { grid-template-columns: 1fr; gap: 10px; } }

/* 波形写真 */
.wave-photo { position: relative; }
.wave-photo img { width: 100%; height: auto; display: block; }
.wave-photo svg.mask { position: absolute; left: -1%; width: 102%; height: 46px; }
.wave-photo svg.mask.t { top: -1px; }
.wave-photo svg.mask.b { bottom: -1px; transform: scaleY(-1); }

/* フッタ・戻る導線 */
.doc-foot { max-width: 780px; margin: 0 auto; padding: 0 28px 90px; text-align: center; }
.doc-foot .next {
  display: inline-block; font-size: 13.5px; letter-spacing: .2em;
  border-bottom: 1px solid var(--ink); padding-bottom: 4px;
}
footer.site {
  padding: 40px 0 46px; text-align: center;
  font-family: var(--sans); font-weight: 300; font-size: 10.5px; letter-spacing: .22em; color: var(--ink-3);
  border-top: 1px solid var(--rule);
}
footer.site a { margin: 0 12px; }

/* works 下層：リード文と結び */
.works-lead { max-width: 780px; margin: 0 auto; padding: 20px 28px 70px; text-align: center; }
.works-lead p { font-size: clamp(14px, 1.6vw, 16px); margin-bottom: 1.5em; }
.works-lead p:last-child { margin-bottom: 0; }
.works-close { max-width: 780px; margin: 0 auto; padding: 84px 28px 96px; text-align: center; font-size: 14.5px; }
.works-close a { border-bottom: 1px solid var(--ink-3); padding-bottom: 2px; }
.works-close a:hover { opacity: .7; }
.works-close .small-note { font-family: var(--sans); font-weight: 300; font-size: 12px; letter-spacing: .1em; color: var(--ink-3); line-height: 2.4; margin-bottom: 38px; }

/* people 下層：クライアントロゴ（ささやかな横流れ） */
.logo-marquee {
  overflow: hidden;
  margin: 44px 0 0;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 88%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 88%, transparent 100%);
}
.lm-track { display: flex; width: max-content; animation: lm-flow 42s linear infinite; will-change: transform; }
.logo-marquee:hover .lm-track { animation-play-state: paused; }
.lm-set { display: flex; align-items: center; gap: 72px; padding-right: 72px; }
.lm-set img { width: auto; height: auto; filter: grayscale(1); opacity: .45; }
.lm-set img:nth-child(1), .lm-set img:nth-child(2) { max-height: 38px; }
.lm-set img:nth-child(3) { max-width: 120px; }
.lm-set img:nth-child(4) { max-width: 136px; }
@keyframes lm-flow { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .lm-track { animation: none; } }
.logos-note { text-align: center; font-family: var(--sans); font-weight: 300; font-size: 10.5px; letter-spacing: .14em; color: var(--ink-3); margin-top: 40px; }

/* people 下層：静かな名前一覧 */
.name-list { list-style: none; text-align: center; margin: 6px 0 0; }
.name-list li { font-size: 15.5px; font-weight: 500; letter-spacing: .14em; padding: 20px 0 18px; border-bottom: 1px solid var(--rule); }
.name-list li:first-child { border-top: 1px solid var(--rule); }
.name-list li small { display: block; font-family: var(--sans); font-weight: 300; font-size: 10.5px; color: var(--ink-3); letter-spacing: .26em; margin-top: 6px; }

/* fade-in */
.fx { opacity: 0; transform: translateY(26px); transition: opacity 1.1s ease, transform 1.1s ease; }
.fx.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .fx { opacity: 1; transform: none; transition: none; } }