/* ==========================================================
   HALVI Inc. Corporate Site
   ========================================================== */
:root {
  --purple: #4F4359;      /* 紫鼠（ロゴの藤紫をくすませた色） */
  --purple-deep: #3B3343;
  --fuji: #A397AE;        /* 藤鼠 */
  --base: #F6F3EC;
  --paper: #FBF9F5;
  --ink: #1C1A1F;
  --ink-soft: #5B5560;
  --line: #E3DDD3;
  --brass: #B08D57;

  --mincho: "Shippori Mincho", "Noto Serif JP", "Noto Serif CJK JP", "Yu Mincho", serif;
  --sans: "Zen Kaku Gothic New", "Noto Sans JP", "Noto Sans CJK JP", "Hiragino Sans", sans-serif;
  --latin: "Jost", "Noto Sans JP", "Noto Sans CJK JP", sans-serif;

  --gutter: clamp(20px, 5vw, 72px);
  --max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--base);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 2;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- 日英切替 ---------- */
html[data-lang="ja"] .en { display: none !important; }
html[data-lang="en"] .ja { display: none !important; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--gutter);
  transition: background .5s, padding .5s, box-shadow .5s;
}
.header__logo { position: relative; height: 26px; width: 150px; }
.header__logo img { position: absolute; inset: 0; height: 100%; width: auto; transition: opacity .5s; }
.header__logo .logo-dark { opacity: 0; }
.header.is-scrolled { background: rgba(246, 243, 236, .94); backdrop-filter: blur(8px); padding: 14px var(--gutter); box-shadow: 0 1px 0 var(--line); }
.header.is-scrolled .logo-light { opacity: 0; }
.header.is-scrolled .logo-dark { opacity: 1; }

.nav { display: flex; align-items: center; gap: 34px; }
.nav a { font-family: var(--latin); font-size: 13px; letter-spacing: .18em; color: #fff; transition: color .5s, opacity .3s; }
.nav a:hover { opacity: .6; }
.header.is-scrolled .nav a, .header.is-scrolled .lang button { color: var(--purple); }

.nav__sns { display: grid; place-items: center; margin-left: 4px; }
.nav__sns svg { width: 18px; height: 18px; fill: none; stroke: #fff; stroke-width: 1.5; transition: stroke .5s; }
.nav__sns svg .dot { fill: #fff; stroke: none; }
.header.is-scrolled .nav__sns svg { stroke: var(--purple); }
.header.is-scrolled .nav__sns svg .dot { fill: var(--purple); }
.lang { display: flex; gap: 2px; margin-left: 8px; }
.lang button {
  background: none; border: 0; cursor: pointer; padding: 4px 6px;
  font-family: var(--latin); font-size: 12px; letter-spacing: .15em; color: #fff; opacity: .55;
}
.lang button[aria-pressed="true"] { opacity: 1; text-decoration: underline; text-underline-offset: 5px; }

.menu-btn { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; height: 100vh; min-height: 620px; overflow: hidden; color: #fff; }
.hero__img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% 50%;
  animation: heroZoom 14s ease-out both;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(28,22,30,.35) 0%, rgba(28,22,30,0) 55%),
    linear-gradient(0deg, rgba(28,22,30,.55) 0%, rgba(28,22,30,0) 45%),
    linear-gradient(180deg, rgba(28,20,36,.42) 0%, rgba(28,20,36,0) 22%);
}
@keyframes heroZoom { from { transform: scale(1.08); } to { transform: scale(1); } }

.hero__copy { position: absolute; z-index: 2; left: var(--gutter); right: var(--gutter); bottom: 108px; margin: 0; font-weight: 500; }
.hero__copy .ja { display: block; font-family: var(--sans); font-size: clamp(24px, 2.8vw, 38px); letter-spacing: .16em; line-height: 1.7; }
.hero__copy .en { display: block; font-family: var(--latin); font-weight: 400; font-size: clamp(26px, 3vw, 42px); letter-spacing: .04em; line-height: 1.3; }
.hero__copy small, .hero__copy small.ja { display: block; margin-top: 10px; font-family: var(--latin); font-weight: 300; font-size: 14px; letter-spacing: .12em; opacity: .85; }
.hero__sub {
  position: absolute; z-index: 2; left: var(--gutter); bottom: 44px;
  font-family: var(--latin); font-size: 12px; letter-spacing: .3em; opacity: .85;
}
.hero__scroll {
  position: absolute; z-index: 2; right: var(--gutter); bottom: 0;
  font-family: var(--latin); font-size: 11px; letter-spacing: .3em; writing-mode: vertical-rl;
  padding-bottom: 96px; opacity: .85;
}
.hero__scroll::after {
  content: ""; position: absolute; left: 50%; bottom: 0; width: 1px; height: 80px; background: rgba(255,255,255,.7);
  animation: scrollLine 2.4s ease-in-out infinite; transform-origin: top;
}
@keyframes scrollLine { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- Section 共通 ---------- */
.section { padding: clamp(96px, 13vw, 168px) var(--gutter); }
.inner { max-width: var(--max); margin: 0 auto; }
.label {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--latin); font-size: 12px; letter-spacing: .32em; color: var(--fuji);
}
.label::before { content: ""; width: 36px; height: 1px; background: currentColor; }
.title {
  font-family: var(--sans); font-weight: 500; font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.7; letter-spacing: .1em; margin: 16px 0 0; color: var(--ink);
}
.lead { color: var(--ink-soft); max-width: 34em; margin-top: 28px; }

/* ---------- Info ---------- */
.info { padding-top: clamp(72px, 9vw, 112px); padding-bottom: 0; }
.info__grid { display: grid; grid-template-columns: 220px 1fr; gap: 40px; align-items: start; }
.info__head .title { font-family: var(--latin); font-weight: 400; letter-spacing: .14em; margin-top: 10px; }
.info__list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.info__list li { border-bottom: 1px solid var(--line); }
.info__list a, .info__list .row { display: grid; grid-template-columns: 110px 104px 1fr; gap: 16px; align-items: center; padding: 22px 4px; transition: background .3s; }
.info__list a:hover { background: rgba(255,255,255,.5); }
.info__date { font-family: var(--latin); font-size: 13px; letter-spacing: .12em; color: var(--ink-soft); }
.info__cat { justify-self: start; font-size: 11px; letter-spacing: .12em; color: var(--purple); border: 1px solid var(--fuji); padding: 0 10px; line-height: 22px; border-radius: 12px; }
.info__ttl { font-size: 15px; }
.info__more { display: inline-block; margin-top: 22px; font-family: var(--latin); font-size: 12px; letter-spacing: .22em; color: var(--purple); }

/* ---------- About ---------- */
.about__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(48px, 7vw, 110px); align-items: center; }
.about__text p { margin: 0 0 1.4em; color: var(--ink-soft); }
.about__text p.big { font-weight: 500; font-size: 17px; line-height: 2.1; color: var(--ink); }
.waka {
  position: relative; background: var(--paper); border: 1px solid var(--line);
  padding: 64px 40px; display: flex; flex-direction: column; align-items: center; gap: 28px; overflow: hidden;
}
.waka__mark { position: absolute; right: -36px; bottom: -40px; width: 190px; opacity: .06; }
.waka__poem {
  writing-mode: vertical-rl; font-family: var(--mincho); font-size: 22px; letter-spacing: .32em; line-height: 2.3;
  color: var(--purple); margin: 8px 0;
}
.waka__poem span { display: block; }
.waka__poem span:nth-child(2) { padding-top: 1.4em; }
.waka__poem span:nth-child(3) { padding-top: 2.8em; }
.waka__poem span:nth-child(4) { padding-top: 4.6em; }
.waka__poem span:nth-child(5) { padding-top: 6em; }
.waka__en { font-family: var(--mincho); font-style: italic; color: var(--ink-soft); text-align: center; font-size: 15px; line-height: 2; }
.waka__cap { font-family: var(--latin); font-size: 11px; letter-spacing: .25em; color: var(--fuji); }

.about__img { margin: 0; aspect-ratio: 5 / 6; overflow: hidden; }
.about__img img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Business ---------- */
.business { background: var(--paper); }
.biz { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 64px; border-top: 1px solid var(--line); }
.biz__item { padding: 40px 36px 8px 0; border-right: 1px solid var(--line); }
.biz__item + .biz__item { padding-left: 36px; }
.biz__item:last-child { border-right: 0; }
.biz__num { font-family: var(--latin); font-size: 13px; letter-spacing: .2em; color: var(--brass); }
.biz__item h3 { font-weight: 500; font-size: 20px; letter-spacing: .1em; line-height: 1.7; margin: 14px 0 6px; color: var(--purple); }
.biz__item .en-sub { font-family: var(--latin); font-size: 11px; letter-spacing: .2em; color: var(--fuji); }
.biz__item p { color: var(--ink-soft); font-size: 14px; margin-top: 14px; }

/* ---------- Products ---------- */
.products__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; flex-wrap: wrap; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.card { display: block; }
.card__img { aspect-ratio: 4 / 5; overflow: hidden; background: #E9E4DC; }
.card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s ease; }
.card:hover .card__img img { transform: scale(1.04); }
.card__body { display: flex; justify-content: space-between; align-items: baseline; padding: 18px 2px 0; border-bottom: 1px solid var(--line); padding-bottom: 16px; }
.card__body h3 { font-weight: 500; font-size: 16px; letter-spacing: .1em; margin: 0; }
.card__body .t { font-family: var(--latin); font-size: 12px; letter-spacing: .22em; color: var(--fuji); margin: 0; }
.soon { font-family: var(--latin); font-size: 11px; letter-spacing: .2em; color: var(--ink-soft); margin: 8px 2px 0; }

.btn {
  display: inline-flex; align-items: center; gap: 18px;
  border: 1px solid var(--purple); color: var(--purple); padding: 14px 30px;
  font-family: var(--latin); font-size: 13px; letter-spacing: .22em; background: transparent; cursor: pointer;
  transition: background .3s, color .3s;
}
.btn::after { content: ""; width: 26px; height: 1px; background: currentColor; transition: width .3s; }
.btn:hover { background: var(--purple); color: #fff; }
.btn:hover::after { width: 36px; }
.btn.is-disabled { opacity: .5; pointer-events: none; }
.btn--light { border-color: rgba(255,255,255,.7); color: #fff; }
.btn--light:hover { background: #fff; color: var(--purple); }

/* ---------- Links ---------- */
.links { padding-top: 0; }
.links__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.link {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px;
  background: #fff; border: 1px solid var(--line); padding: 28px 30px; transition: border-color .3s, transform .3s;
}
.link:hover { border-color: var(--fuji); transform: translateY(-2px); }
.link__icon { width: 52px; height: 52px; border-radius: 50%; background: var(--base); display: grid; place-items: center; }
.link svg { width: 24px; height: 24px; fill: none; stroke: var(--purple); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.link svg .dot { fill: var(--purple); stroke: none; }
.link__body { display: grid; gap: 2px; }
.link__t { font-family: var(--latin); font-size: 12px; letter-spacing: .24em; color: var(--fuji); }
.link__d { font-size: 16px; font-weight: 500; letter-spacing: .06em; }
.link__s { font-size: 12px; color: var(--ink-soft); }
.link .arr { width: 18px; height: 18px; stroke: var(--ink-soft); }
.link.is-soon { pointer-events: none; }
.link.is-soon .link__d { color: var(--ink-soft); }

/* ---------- Partners ---------- */
.partners { background: var(--purple); color: #fff; position: relative; overflow: hidden; }
.partners__mark { position: absolute; right: -60px; opacity: .05; top: 50%; transform: translateY(-50%); width: 420px; opacity: .06; filter: brightness(0) invert(1); }
.partners .label { color: #CBBEDF; }
.partners__grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(48px, 8vw, 120px); align-items: center; position: relative; }
.partners__verse { font-weight: 500; font-size: clamp(24px, 2.6vw, 34px); letter-spacing: .2em; line-height: 1.9; margin: 0; white-space: nowrap; }
.partners__verse small { display: block; margin-top: 14px; font-family: var(--latin); font-weight: 300; font-size: 14px; letter-spacing: .08em; white-space: normal; opacity: .75; }
.partners .title { color: #fff; }
.partners p { color: rgba(255,255,255,.82); max-width: 32em; }

.poem { margin: 0; border-left: 1px solid rgba(255,255,255,.25); padding: 8px 0 8px 32px; }
.poem__cap { font-family: var(--latin); font-size: 11px; letter-spacing: .24em; color: #CBC2D4; margin: 0 0 18px; }
html[data-lang="ja"] .poem__cap { font-family: var(--sans); letter-spacing: .16em; }
.poem__text { font-family: var(--mincho); font-weight: 500; font-size: clamp(19px, 1.9vw, 24px); letter-spacing: .14em; line-height: 2; margin: 0; color: #fff; }
.poem__note { font-size: 13px; line-height: 2; margin: 18px 0 0; color: rgba(255,255,255,.7) !important; }

/* ---------- Company ---------- */
.company__grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(40px, 7vw, 110px); }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; vertical-align: top; padding: 22px 0; border-bottom: 1px solid var(--line); font-weight: 400; }
.table tr:first-child th, .table tr:first-child td { border-top: 1px solid var(--line); }
.table th { width: 32%; color: var(--purple); font-size: 14px; letter-spacing: .12em; }
.table td { color: var(--ink); }
.table td small { display: block; color: var(--ink-soft); font-size: 12px; letter-spacing: .14em; font-family: var(--latin); }

/* ---------- Contact ---------- */
.contact { background: var(--paper); }
.contact__grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(40px, 7vw, 110px); }
.form { display: grid; gap: 26px; }
.form__row { display: grid; gap: 8px; }
.form__row--2 { grid-template-columns: 1fr 1fr; gap: 24px; }
.form label { font-size: 13px; letter-spacing: .12em; color: var(--purple); }
.form label .req { color: var(--brass); font-size: 11px; margin-left: 8px; }
.form input[type="text"], .form input[type="email"], .form select, .form textarea {
  width: 100%; font: inherit; color: var(--ink); background: #fff;
  border: 1px solid var(--line); border-radius: 0; padding: 14px 16px; transition: border-color .3s;
  -webkit-appearance: none; appearance: none;
}
.form select { background-image: linear-gradient(45deg, transparent 50%, var(--purple) 50%), linear-gradient(135deg, var(--purple) 50%, transparent 50%); background-position: calc(100% - 22px) 52%, calc(100% - 17px) 52%; background-size: 5px 5px; background-repeat: no-repeat; }
.form textarea { min-height: 180px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--fuji); }
.form__agree { display: flex; gap: 10px; align-items: center; font-size: 13px; color: var(--ink-soft); }
.form__agree a { text-decoration: underline; text-underline-offset: 4px; }
.form__agree input { accent-color: var(--purple); width: 16px; height: 16px; }
.form .btn { justify-self: start; }

.form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- 下層ページ ---------- */
.page-head { padding: clamp(140px, 16vw, 200px) var(--gutter) clamp(48px, 6vw, 72px); border-bottom: 1px solid var(--line); }
.page-head .inner { max-width: 820px; }
.page-head .title { margin-top: 12px; }
.page-body { padding: clamp(56px, 8vw, 96px) var(--gutter) clamp(96px, 12vw, 150px); }
.page-body .inner { max-width: 820px; }
.policy__intro { color: var(--ink-soft); margin: 0 0 48px; }
.policy h2 { font-size: 17px; font-weight: 500; letter-spacing: .08em; margin: 56px 0 14px; padding-top: 28px; border-top: 1px solid var(--line); color: var(--ink); }
.policy h2:first-of-type { margin-top: 0; }
.policy p, .policy li { color: var(--ink-soft); font-size: 14px; }
.policy ol, .policy ul { padding-left: 1.4em; margin: 0; }
.policy li + li { margin-top: 4px; }
.policy dl { display: grid; grid-template-columns: 9em 1fr; gap: 8px 16px; margin: 0; font-size: 14px; }
.policy dt { color: var(--purple); }
.policy dd { margin: 0; color: var(--ink-soft); }
.policy__date { margin-top: 64px; text-align: right; font-size: 13px; color: var(--ink-soft); }
.notice { text-align: center; }
.notice p { color: var(--ink-soft); }
.notice .btn { margin-top: 40px; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 72px var(--gutter) 36px; }
.footer__inner { max-width: var(--max); margin: 0 auto; display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; flex-wrap: wrap; }
.footer__logo img { height: 24px; width: auto; }
.footer__name { font-size: 12px; letter-spacing: .14em; margin-top: 18px; }
.footer__nav { display: flex; gap: 28px; flex-wrap: wrap; }
.footer__nav a { font-family: var(--latin); font-size: 12px; letter-spacing: .2em; }
.footer__nav a:hover { color: #fff; }
.footer__bottom { max-width: var(--max); margin: 56px auto 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; font-family: var(--latin); font-size: 11px; letter-spacing: .18em; }

.footer__sns { display: flex; gap: 14px; }
.footer__sns a { width: 40px; height: 40px; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; display: grid; place-items: center; transition: border-color .3s; }
.footer__sns a:hover { border-color: rgba(255,255,255,.6); }
.footer__sns svg { width: 18px; height: 18px; fill: none; stroke: rgba(255,255,255,.8); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.footer__sns svg .dot { fill: rgba(255,255,255,.8); stroke: none; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1.2s ease, transform 1.2s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__img, .hero__scroll::after { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav { position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 28px; background: var(--purple); opacity: 0; pointer-events: none; transition: opacity .4s; }
  .nav a, .header.is-scrolled .nav a { color: #fff; font-size: 15px; }
  .header.is-scrolled .nav .lang button, .nav .lang button { color: #fff; }
  .nav.is-open { opacity: 1; pointer-events: auto; }
  .menu-btn {
    display: block; position: relative; z-index: 60; width: 30px; height: 20px; background: none; border: 0; cursor: pointer; padding: 0;
  }
  .menu-btn span { position: absolute; left: 0; width: 100%; height: 1px; background: #fff; transition: transform .3s, top .3s, background .5s; }
  .menu-btn span:nth-child(1) { top: 5px; } .menu-btn span:nth-child(2) { top: 14px; }
  .header.is-scrolled .menu-btn span { background: var(--purple); }
  .menu-btn.is-open span { background: #fff !important; }
  .menu-btn.is-open span:nth-child(1) { top: 10px; transform: rotate(30deg); }
  .menu-btn.is-open span:nth-child(2) { top: 10px; transform: rotate(-30deg); }

  .about__grid, .company__grid, .contact__grid, .partners__grid, .info__grid { grid-template-columns: 1fr; }
  .info__grid { gap: 20px; }
  .info__list a, .info__list .row { grid-template-columns: auto auto; gap: 6px 14px; }
  .info__ttl { grid-column: 1 / -1; }
  .policy dl { grid-template-columns: 1fr; gap: 2px; }
  .policy dd { margin-bottom: 10px; }
  .partners__verse { white-space: normal; }
  .biz { grid-template-columns: 1fr; }
  .biz__item, .biz__item + .biz__item { padding: 32px 0 20px; border-right: 0; border-bottom: 1px solid var(--line); }
  .cards { grid-template-columns: 1fr; }
  .cards { gap: 36px; }
  .links__grid { grid-template-columns: 1fr; gap: 16px; }
  .about__img { aspect-ratio: 4 / 3; }
  .poem { padding-left: 20px; }
  .link { padding: 22px 20px; gap: 18px; }
  .header.is-scrolled .nav__sns svg, .nav__sns svg { stroke: #fff; }
  .header.is-scrolled .nav__sns svg .dot { fill: #fff; }
  .card__img { aspect-ratio: 4 / 3; }
  .form__row--2 { grid-template-columns: 1fr; }
  .hero__img { object-position: 72% 50%; }
}
@media (max-width: 560px) {
  body { font-size: 14px; }
  .hero__copy { bottom: 96px; }
  .hero__copy .ja { font-size: 22px; letter-spacing: .12em; }
  .waka { padding: 48px 24px; }
  .waka__poem { font-size: 19px; }
  .table th { width: 30%; font-size: 13px; }
  .footer__bottom { flex-direction: column; gap: 8px; }
}
@media (min-width: 901px) and (max-width: 1140px) {
  .links__grid { grid-template-columns: 1fr 1fr; }
}