/* ==========================================================================
   TANAKA GIKEN — Corporate Site  /  style.css
   Layout concept: 白い余白の中に、全面写真と黒背景のセクションを差し込んで
   「大地 → 時間 → 技術 → 品質」のリズムをつくる。PC最大幅1240px、SPは1カラム。
   配色: WHITE × BLACK × SILVER × EARTH（単一テーマ。ダークモードで反転しない）
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  /* color */
  --white: #ffffff;
  --paper: #f5f5f3;          /* 白セクションの切り替え用。わずかに石の色味 */
  --black: #111111;
  --ink: #333333;            /* 本文 Charcoal */
  --gray: #777777;           /* 補助文字 */
  --line: #e4e4e2;           /* 区切り線 */
  --silver: #b9bcbd;         /* 金属感のある淡いグレー */
  --silver-hi: #dcdedf;
  --earth: #8a6c52;          /* 写真の岩・土の色。アクセントは最小限に */

  /* type */
  --font-en: "Jost", "Helvetica Neue", Arial, sans-serif;
  --font-ja: "Zen Kaku Gothic New", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 0.9375rem;
  --fs-md: 1.125rem;
  --fs-lg: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);
  --fs-xl: clamp(1.75rem, 1.1rem + 2.6vw, 3.25rem);
  --fs-hero: clamp(2.6rem, 1rem + 7vw, 7.5rem);

  /* layout */
  --container: 1240px;
  --gutter: clamp(20px, 5vw, 56px);
  --section-y: clamp(88px, 11vw, 150px);
  --header-h: 72px;
  --ease: cubic-bezier(.22, .61, .36, 1);

  color-scheme: light;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-ja);
  font-size: var(--fs-base);
  line-height: 1.95;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt" 0;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, dl, dd, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
:focus-visible { outline: 1px solid currentColor; outline-offset: 4px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- 3. Layout ---------- */
.l-container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 4. Components ---------- */

/* c-section: セクション共通。--dark / --paper で背景を切り替える */
.c-section { padding-block: var(--section-y); position: relative; }
.c-section--paper { background: var(--paper); }
.c-section--dark { background: var(--black); color: var(--silver-hi); }
.c-section--flush-top { padding-top: 0; }

/* c-eyebrow: 英字の小見出し（ORIGIN / TECHNOLOGY など） */
.c-eyebrow {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-en); font-weight: 400;
  font-size: var(--fs-xs); letter-spacing: .32em; text-transform: uppercase;
  color: var(--gray);
}
.c-eyebrow::before { content: ""; width: 32px; height: 1px; background: currentColor; opacity: .6; }
.c-section--dark .c-eyebrow { color: var(--silver); }

/* c-heading: 日本語の見出し */
.c-heading {
  font-weight: 500; font-size: var(--fs-xl); line-height: 1.55; letter-spacing: .06em;
  color: var(--black); text-wrap: balance; word-break: auto-phrase;
}
.c-heading--md { font-size: var(--fs-lg); }
.c-section--dark .c-heading { color: var(--white); }

/* c-body: 本文 */
.c-body { max-width: 34em; color: var(--ink); }
.c-body + .c-body { margin-top: 1.2em; }
.c-section--dark .c-body { color: var(--silver-hi); }

/* c-stack: 縦の積み重ね（gapで余白を管理） */
.c-stack { display: flex; flex-direction: column; gap: 28px; min-width: 0; }
.c-stack--lg { gap: 44px; }

/* c-split: 写真と文章の2カラム。--reverse で左右反転 */
.c-split {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: center;
}
.c-split--reverse > :first-child { order: 2; }
.c-split > * { min-width: 0; }

/* c-media: 写真スロット。<img> に差し替えるか、仮テクスチャ（canvas）を表示 */
.c-media {
  position: relative; overflow: hidden; background: #2a241f;
  aspect-ratio: 4 / 5; max-width: 100%;
}
.c-media--wide { aspect-ratio: 16 / 9; }
.c-media--band { aspect-ratio: 21 / 8; }
.c-media--square { aspect-ratio: 1 / 1; }
.c-media > img, .c-media > canvas {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block;
}
/* 仮写真の注記。公開前に body から .show-photo-notes を外すと非表示 */
.c-media__note {
  position: absolute; left: 12px; bottom: 12px; right: 12px; z-index: 2;
  font-family: var(--font-ja); font-size: 11px; line-height: 1.6; letter-spacing: .04em;
  color: rgba(255,255,255,.82);
  display: none;
}
.c-media__note::before { content: "PHOTO ｜ "; font-family: var(--font-en); letter-spacing: .2em; }
.show-photo-notes .c-media__note { display: block; }

/* c-btn: 枠線中心のボタン */
.c-btn {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 28px;
  min-height: 52px; padding: 0 22px 0 26px;
  border: 1px solid currentColor; color: var(--black);
  font-size: var(--fs-sm); letter-spacing: .1em;
  transition: background-color .4s var(--ease), color .4s var(--ease);
}
.c-btn::after {
  content: ""; width: 22px; height: 1px; background: currentColor;
  transition: transform .4s var(--ease);
}
.c-btn:hover { background: var(--black); color: var(--white); }
.c-btn:hover::after { transform: translateX(4px); }
.c-btn--light { color: var(--white); }
.c-btn--light:hover { background: var(--white); color: var(--black); }
.c-btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* c-link: テキストリンク（→ 詳しく） */
.c-link {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--font-en); font-size: var(--fs-xs); letter-spacing: .28em; text-transform: uppercase;
  padding-bottom: 6px; border-bottom: 1px solid var(--line);
  transition: border-color .3s;
}
.c-link span { font-family: var(--font-ja); letter-spacing: .1em; text-transform: none; font-size: var(--fs-sm); }
.c-link:hover { border-color: currentColor; }
.c-section--dark .c-link { border-color: #3a3a3a; }
.c-section--dark .c-link:hover { border-color: var(--silver); }

/* c-tbc: 要確認マーカー。公開前に必ず解消する */
.c-tbc {
  display: inline-block; vertical-align: .15em; margin-left: .5em;
  padding: 1px 8px; border: 1px dashed #b3261e; color: #b3261e;
  font-size: 11px; line-height: 1.6; letter-spacing: .08em; white-space: nowrap;
}
.c-section--dark .c-tbc { border-color: #e39a94; color: #e39a94; }

/* c-spec: 項目名と内容の一覧（会社概要・仕様など） */
.c-spec { border-top: 1px solid var(--line); }
.c-spec__row {
  display: grid; grid-template-columns: 9em 1fr; gap: 24px;
  padding-block: 18px; border-bottom: 1px solid var(--line);
}
.c-spec dt { color: var(--gray); font-size: var(--fs-sm); }
.c-spec dd { min-width: 0; }
.c-section--dark .c-spec, .c-section--dark .c-spec__row { border-color: #2c2c2c; }

/* c-hairline: シルバーの細線 */
.c-hairline { height: 1px; border: 0; margin: 0; background: linear-gradient(90deg, transparent, var(--silver), transparent); }

/* ---------- 5. Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
  color: var(--white);
  transition: background-color .5s var(--ease), color .5s var(--ease), border-color .5s;
  border-bottom: 1px solid transparent;
}
.site-header.is-solid { background: rgba(255,255,255,.96); color: var(--black); border-color: var(--line); }
.site-header__inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-logo { font-family: var(--font-en); font-weight: 400; font-size: 15px; letter-spacing: .42em; white-space: nowrap; }
.site-nav ul { display: flex; gap: clamp(18px, 2.4vw, 36px); }
.site-nav a {
  font-family: var(--font-en); font-size: 12px; letter-spacing: .22em; white-space: nowrap;
  padding-block: 6px; border-bottom: 1px solid transparent; transition: border-color .3s;
}
.site-nav a:hover { border-color: currentColor; }
.site-nav .is-contact { padding: 8px 16px; border: 1px solid currentColor; }
.site-nav .is-contact:hover { background: currentColor; }
.site-nav .is-contact:hover span { filter: invert(1); }
.nav-toggle {
  display: none; width: 44px; height: 44px; margin-right: -10px; padding: 0; border: 0; background: none; color: inherit; cursor: pointer;
}
.nav-toggle span { display: block; width: 24px; height: 1px; margin: 7px auto; background: currentColor; transition: transform .3s var(--ease); }
.nav-open .nav-toggle span:first-child { transform: translateY(4px) rotate(25deg); }
.nav-open .nav-toggle span:last-child { transform: translateY(-4px) rotate(-25deg); }

/* ---------- 6. Sections (HOME) ---------- */

/* HERO */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: flex-end; color: var(--white); background: #1b1612; overflow: hidden; }
.hero .hero__media { position: absolute; inset: 0; aspect-ratio: auto; }
.hero__media::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(10,8,6,.55) 0%, rgba(10,8,6,.25) 35%, rgba(10,8,6,.7) 100%);
}
.hero__media .c-media__note { bottom: auto; top: calc(var(--header-h) + 16px); left: auto; right: var(--gutter); width: auto; max-width: 18em; text-align: right; }
.hero__body { position: relative; z-index: 2; width: 100%; padding-bottom: clamp(72px, 13vh, 140px); }
.hero__title {
  font-family: var(--font-en); font-weight: 200; font-size: var(--fs-hero);
  line-height: 1; letter-spacing: .12em; margin-left: -.06em;
}
.hero__copy { margin-top: clamp(24px, 3.4vw, 40px); font-size: clamp(1.05rem, .8rem + 1.1vw, 1.6rem); font-weight: 500; letter-spacing: .14em; line-height: 1.7; }
.hero__tag { margin-top: 18px; font-family: var(--font-en); font-size: var(--fs-sm); letter-spacing: .5em; color: var(--silver-hi); }
.hero__foot {
  position: absolute; z-index: 2; left: 0; right: 0; bottom: 28px;
  display: flex; justify-content: space-between; font-family: var(--font-en); font-size: 11px; letter-spacing: .3em; color: rgba(255,255,255,.7);
}
.hero__scroll { display: flex; align-items: center; gap: 14px; }
.hero__scroll::after { content: ""; width: 56px; height: 1px; background: currentColor; transform-origin: left; animation: scrollLine 2.8s var(--ease) infinite; }
@keyframes scrollLine { 0% { transform: scaleX(0); } 50% { transform: scaleX(1); } 100% { transform: scaleX(1); opacity: 0; } }
.hero__title, .hero__copy, .hero__tag { animation: heroIn 1.6s var(--ease) both; }
.hero__copy { animation-delay: .35s; }
.hero__tag { animation-delay: .6s; }
@keyframes heroIn { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* PHILOSOPHY */
.philosophy { padding-block: clamp(120px, 16vw, 220px); }
.philosophy__grid { display: grid; grid-template-columns: 1fr 2.2fr; gap: 48px; align-items: start; }
.philosophy__statement {
  word-break: auto-phrase; font-size: clamp(1.45rem, .9rem + 2.3vw, 2.9rem); font-weight: 500; line-height: 1.9; letter-spacing: .1em; color: var(--black);
}
.philosophy__sub { margin-top: 48px; max-width: 30em; color: var(--gray); }

/* ORIGIN：全面写真の帯＋テキスト */
.origin__band { position: relative; }
.origin__place {
  position: absolute; z-index: 2; right: var(--gutter); top: 20px;
  font-family: var(--font-en); font-size: 11px; letter-spacing: .36em; color: rgba(255,255,255,.85);
}
.origin__body { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 110px); padding-top: clamp(64px, 8vw, 110px); }
.origin__body > * { min-width: 0; }

/* FERMENTATION：時間の大きな数字 */
.fermentation__figure { display: flex; align-items: baseline; gap: 16px; color: var(--black); }
.fermentation__num { font-family: var(--font-en); font-weight: 200; font-size: clamp(5rem, 3rem + 8vw, 9.5rem); line-height: .9; letter-spacing: -.02em; }
.fermentation__unit { font-family: var(--font-en); font-size: var(--fs-sm); letter-spacing: .3em; color: var(--gray); }
.fermentation__note { font-size: var(--fs-sm); color: var(--gray); }

/* TECHNOLOGY：黒背景・巨大な35°C */
.technology { overflow: hidden; }
.technology__temp {
  font-family: var(--font-en); font-weight: 200; line-height: .8; letter-spacing: -.04em;
  font-size: clamp(8rem, 2rem + 30vw, 27rem);
  margin-left: -.06em; margin-block: clamp(36px, 6vw, 72px);
  background: linear-gradient(180deg, #f2f3f3 0%, #b9bcbd 55%, #7b7f81 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  white-space: nowrap;
}
.technology__temp small { font-size: .42em; letter-spacing: 0; vertical-align: .95em; margin-left: .04em; }
.technology__grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: end; }
.technology__grid > * { min-width: 0; }
.patent { border-top: 1px solid #333; padding-top: 24px; display: grid; gap: 10px; }
.patent__label { font-family: var(--font-en); font-size: 11px; letter-spacing: .32em; color: var(--silver); }
.patent__num { font-size: var(--fs-md); color: var(--white); letter-spacing: .12em; }
.patent__desc { font-size: var(--fs-sm); color: #9ea1a2; }

/* PROCESS：工程の順番（01〜06は実際の工程順） */
.process__list { display: grid; grid-template-columns: repeat(6, 1fr); margin-top: clamp(48px, 6vw, 80px); position: relative; }
.process__list::before { content: ""; position: absolute; top: 5px; left: 0; right: 0; height: 1px; background: var(--silver); }
.process__step { position: relative; padding-top: 36px; padding-right: 18px; min-width: 0; }
.process__step::before { content: ""; position: absolute; top: 0; left: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--white); border: 1px solid var(--earth); }
.process__step:last-child::before { background: var(--earth); }
.process__no { font-family: var(--font-en); font-size: 12px; letter-spacing: .2em; color: var(--earth); }
.process__en { display: block; margin-top: 12px; font-family: var(--font-en); font-size: 10.5px; letter-spacing: .24em; color: var(--gray); }
.process__ja { margin-top: 4px; font-size: var(--fs-md); font-weight: 500; color: var(--black); letter-spacing: .08em; }
.process__desc { margin-top: 10px; font-size: var(--fs-sm); line-height: 1.8; color: var(--ink); }

/* PRODUCT：作品のように一点で見せる */
.product__stage { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: center; }
.product__stage > * { min-width: 0; }
.product__name-en { font-family: var(--font-en); font-weight: 300; font-size: clamp(1.8rem, 1rem + 2.6vw, 3rem); letter-spacing: .12em; line-height: 1.2; color: var(--black); }
.product__name-ja { margin-top: 10px; color: var(--gray); letter-spacing: .12em; }

/* QUALITY */
.quality__head { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: end; }
.quality__head > * { min-width: 0; }
.quality__list { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: clamp(48px, 6vw, 80px); border-top: 1px solid var(--line); }
.quality__item { padding: 32px 28px 8px 0; min-width: 0; }
.quality__item + .quality__item { padding-left: 28px; border-left: 1px solid var(--line); }
.quality__en { font-family: var(--font-en); font-size: 11px; letter-spacing: .3em; color: var(--gray); }
.quality__ja { margin-top: 8px; font-size: var(--fs-md); font-weight: 500; color: var(--black); }
.quality__desc { margin-top: 12px; font-size: var(--fs-sm); line-height: 1.85; }

/* B2B / OEM */
.oem__services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: clamp(48px, 6vw, 80px); }
.oem__service { background: var(--white); padding: clamp(28px, 3.4vw, 44px); min-width: 0; display: grid; gap: 12px; align-content: start; }
.oem__en { font-family: var(--font-en); font-size: 11px; letter-spacing: .3em; color: var(--gray); }
.oem__ja { font-size: var(--fs-md); font-weight: 500; color: var(--black); }
.oem__flow { display: flex; flex-wrap: wrap; gap: 10px 0; margin-top: 40px; font-size: var(--fs-sm); color: var(--ink); }
.oem__flow li { display: flex; align-items: center; }
.oem__flow li + li::before { content: ""; width: 28px; height: 1px; background: var(--silver); margin-inline: 14px; }
.oem__note { margin-top: 20px; font-size: var(--fs-sm); color: var(--gray); }

/* NEWS */
.news__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 24px; }
.news__list { margin-top: 48px; border-top: 1px solid var(--line); }
.news__item a {
  display: grid; grid-template-columns: 7.5em 7em 1fr auto; gap: 24px; align-items: baseline;
  padding-block: 26px; border-bottom: 1px solid var(--line); transition: background-color .3s;
}
.news__item a:hover { background: var(--paper); }
.news__date { font-family: var(--font-en); font-size: var(--fs-sm); letter-spacing: .12em; color: var(--gray); font-variant-numeric: tabular-nums; }
.news__cat { font-family: var(--font-en); font-size: 10.5px; letter-spacing: .26em; color: var(--earth); }
.news__title { min-width: 0; color: var(--black); }
.news__arrow { width: 22px; height: 1px; background: var(--ink); align-self: center; }

/* CONTACT */
.contact { padding-block: clamp(120px, 15vw, 200px); }
.contact__grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: end; }
.contact__grid > * { min-width: 0; }
.contact__heading { word-break: auto-phrase; font-size: clamp(1.7rem, 1rem + 2.6vw, 3rem); font-weight: 500; line-height: 1.6; letter-spacing: .08em; color: var(--white); text-wrap: balance; }
.contact__topics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.contact__topics li { padding: 6px 14px; border: 1px solid #3a3a3a; font-size: 12.5px; color: var(--silver-hi); letter-spacing: .06em; }

/* ---------- 7. Footer ---------- */
.site-footer { background: var(--black); color: #8d9091; border-top: 1px solid #262626; padding-block: 56px 40px; font-size: 12.5px; }
.site-footer__top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; }
.site-footer .site-logo { color: var(--white); }
.site-footer__nav { display: grid; grid-template-columns: repeat(3, auto); gap: 10px 40px; }
.site-footer__nav a:hover, .site-footer__shop:hover { color: var(--white); }
.site-footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; margin-top: 56px; font-family: var(--font-en); letter-spacing: .18em; font-size: 11px; }

/* ---------- 8. Reveal（スクロール連動のフェード。対応ブラウザのみ・静止状態は常に表示） ---------- */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .reveal { animation: reveal linear both; animation-timeline: view(); animation-range: entry 0% entry 55%; }
    @keyframes reveal { from { transform: translateY(32px); } to { transform: none; } }
  }
}

/* ---------- 9. Responsive ---------- */
@media (max-width: 1080px) {
  .process__list { grid-template-columns: repeat(3, 1fr); row-gap: 48px; }
  .process__list::before { display: none; }
  .process__step { border-top: 1px solid var(--silver); padding-top: 28px; }
  .process__step::before { top: -6px; }
}
@media (max-width: 900px) {
  :root { --header-h: 60px; }
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: calc(var(--header-h) + env(safe-area-inset-top, 0px)) 0 0 0;
    background: var(--black); color: var(--white);
    padding: 40px var(--gutter);
    opacity: 0; visibility: hidden; transition: opacity .4s var(--ease), visibility .4s;
  }
  .nav-open .site-nav { opacity: 1; visibility: visible; }
  .nav-open .site-header { background: var(--black); color: var(--white); border-color: #262626; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav li { border-bottom: 1px solid #262626; }
  .site-nav a { display: block; padding-block: 18px; font-size: 14px; border: 0; }
  .site-nav .is-contact { margin-top: 28px; text-align: center; }

  .c-split, .origin__body, .technology__grid, .product__stage, .quality__head, .contact__grid, .philosophy__grid { grid-template-columns: 1fr; }
  .c-split--reverse > :first-child { order: 0; }
  .c-media { aspect-ratio: 4 / 3; }
  .c-media--band { aspect-ratio: 4 / 3; }
  .philosophy__grid { gap: 32px; }
  .oem__services { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { font-size: 14.5px; line-height: 1.9; }
  .hero__title { letter-spacing: .08em; }
  .hero__tag { letter-spacing: .32em; font-size: 12px; }
  .process__list { grid-template-columns: 1fr 1fr; }
  .quality__list { grid-template-columns: 1fr; }
  .quality__item, .quality__item + .quality__item { padding-left: 0; border-left: 0; }
  .quality__item + .quality__item { border-top: 1px solid var(--line); }
  .news__item a { grid-template-columns: auto 1fr; gap: 6px 16px; }
  .news__title { grid-column: 1 / -1; }
  .news__arrow { display: none; }
  .c-spec__row { grid-template-columns: 1fr; gap: 4px; }
  .site-footer__nav { grid-template-columns: repeat(2, auto); }
  .c-btn { width: 100%; }
  .technology__temp small { vertical-align: .9em; }
}

/* 代表の署名 */
.message-sign { font-size: var(--fs-sm); color: var(--gray); letter-spacing: .12em; }
.message-sign span { margin-left: 1em; font-size: var(--fs-md); color: var(--black); letter-spacing: .2em; }

/* 代表メッセージ全文（会社情報ページ用） */
.message { max-width: 40em; }
.message__title { font-size: var(--fs-lg); font-weight: 500; line-height: 1.7; letter-spacing: .08em; color: var(--black); }
.message__body { display: grid; gap: 1.4em; margin-top: 2.4em; }
.message__body strong { font-weight: 500; color: var(--black); }
.message__close { margin-top: 2.4em; color: var(--black); font-weight: 500; }
.message .message-sign { margin-top: 2.4em; text-align: right; }

/* ロゴマーク */
.site-logo { display: inline-flex; align-items: center; gap: 12px; }
.site-logo__mark { width: 26px; height: 26px; flex: none; }

.patent__title { font-size: var(--fs-sm); color: var(--silver-hi); letter-spacing: .1em; }

/* オンラインショップへの導線 */
.site-nav .is-shop::after { content: " ↗"; font-family: var(--font-ja); }
.shop-cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 40px; margin-top: clamp(64px, 8vw, 110px); padding-top: 40px; border-top: 1px solid #2c2c2c; }
.shop-cta__text { display: grid; gap: 6px; min-width: 0; }
.shop-cta__en { font-family: var(--font-en); font-size: 11px; letter-spacing: .32em; color: var(--silver); }
.shop-cta__ja { color: var(--white); font-size: var(--fs-md); letter-spacing: .08em; }

/* ==========================================================================
   下層ページ用コンポーネント
   ========================================================================== */

/* page-hero：下層ページの見出し帯（写真＋暗いオーバーレイ） */
.page-hero { position: relative; min-height: clamp(440px, 64vh, 660px); display: flex; align-items: flex-end; color: var(--white); background: #1b1612; overflow: hidden; }
.page-hero .hero__media { position: absolute; inset: 0; aspect-ratio: auto; }
.page-hero .hero__media::after { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, rgba(10,8,6,.55) 0%, rgba(10,8,6,.3) 40%, rgba(10,8,6,.75) 100%); }
.page-hero .hero__media .c-media__note { bottom: auto; top: calc(var(--header-h) + 16px); left: auto; right: var(--gutter); max-width: 18em; text-align: right; }
.page-hero__body { position: relative; z-index: 2; width: 100%; padding-bottom: clamp(48px, 8vh, 88px); }
.page-hero__en { font-family: var(--font-en); font-weight: 200; font-size: clamp(2.6rem, 1rem + 6vw, 6rem); line-height: 1; letter-spacing: .1em; margin-left: -.05em; }
.page-hero__title { margin-top: 22px; font-size: var(--fs-md); font-weight: 500; letter-spacing: .2em; }
.page-hero__lead { margin-top: 6px; color: var(--silver-hi); letter-spacing: .12em; }
.page-hero__en, .page-hero__title, .page-hero__lead { animation: heroIn 1.4s var(--ease) both; }
.page-hero__title { animation-delay: .25s; } .page-hero__lead { animation-delay: .45s; }

/* c-breadcrumb */
.c-breadcrumb { display: flex; flex-wrap: wrap; gap: 12px; padding-block: 20px; font-family: var(--font-en); font-size: 11px; letter-spacing: .2em; color: var(--gray); border-bottom: 1px solid var(--line); }
.c-breadcrumb span[aria-current] { font-family: var(--font-ja); letter-spacing: .08em; color: var(--ink); }
.c-breadcrumb a:hover { color: var(--black); }

/* c-split--text：見出しと本文だけの2カラム（上揃え） */
.c-split--text { grid-template-columns: 1fr 1.3fr; align-items: start; }

/* temp-scale：温度の目盛り（黒背景用） */
.temp-scale { margin-top: clamp(64px, 8vw, 110px); padding-top: 72px; }
.temp-scale__bar { position: relative; height: 2px; background: #333; }
.temp-scale__fill { position: absolute; left: 0; top: -1px; height: 4px; background: linear-gradient(90deg, #7b7f81, #e6e7e8); }
.temp-scale__mark { position: absolute; bottom: 14px; transform: translateX(-50%); display: grid; justify-items: center; gap: 2px; font-size: 12px; color: #9ea1a2; white-space: nowrap; }
.temp-scale__mark b { font-family: var(--font-en); font-weight: 300; font-size: 22px; letter-spacing: .04em; color: var(--silver-hi); }
.temp-scale__mark::after { content: ""; width: 1px; height: 10px; background: currentColor; margin-top: 4px; }
.temp-scale__mark--main { color: var(--white); }
.temp-scale__mark--main b { font-size: 40px; font-weight: 200; color: var(--white); }
.temp-scale__mark:last-child { transform: translateX(-100%); justify-items: end; }
.temp-scale__mark:last-child::after { margin-right: -1px; }
.temp-scale__ticks { display: flex; justify-content: space-between; margin-top: 14px; font-family: var(--font-en); font-size: 11px; letter-spacing: .08em; color: #6f7274; font-variant-numeric: tabular-nums; }

/* patent-diagram：除湿乾燥装置のしくみ図 */
.patent-diagram { margin-top: clamp(56px, 7vw, 96px); }
.patent-diagram__scroll { overflow-x: auto; }
.patent-diagram svg { display: block; width: 100%; min-width: 640px; height: auto; font-family: var(--font-ja); }
.pd-node rect { fill: var(--white); stroke: var(--black); stroke-width: 1; }
.pd-water rect { fill: #edf0f1; }
.pd-frost rect { fill: #dde3e6; }
.pd-t1 { font-size: 17px; font-weight: 500; fill: var(--black); text-anchor: middle; letter-spacing: .08em; }
.pd-t2 { font-size: 12.5px; fill: var(--ink); text-anchor: middle; }
.pd-t3 { font-family: var(--font-en); font-size: 13px; fill: var(--earth); text-anchor: middle; letter-spacing: .06em; }
.pd-en { font-family: var(--font-en); font-size: 10px; fill: var(--gray); text-anchor: middle; letter-spacing: .24em; }
.pd-label { font-size: 12px; fill: var(--gray); text-anchor: middle; letter-spacing: .08em; }
.pd-flow { fill: none; stroke: var(--gray); stroke-width: 1.2; }
.pd-bracket { fill: none; stroke: var(--silver); stroke-width: 1; }
.pd-arrowhead { fill: var(--gray); }
.patent-diagram__cap { margin-top: 16px; font-size: 12px; color: var(--gray); }
.patent-spec { margin-top: clamp(40px, 5vw, 64px); max-width: 640px; }

/* process__list--5：5工程版 */
.process__list--5 { grid-template-columns: repeat(5, 1fr); }

/* next-links：ページ下部の次への導線 */
.next-links { padding-block: clamp(72px, 9vw, 120px); }
.next-links__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 32px; background: #2c2c2c; border: 1px solid #2c2c2c; }
.next-link { display: grid; gap: 8px; padding: clamp(28px, 4vw, 48px); background: var(--black); transition: background-color .4s var(--ease); }
.next-link:hover { background: #1b1b1b; }
.next-link__en { font-family: var(--font-en); font-weight: 200; font-size: clamp(1.6rem, 1rem + 2vw, 2.6rem); letter-spacing: .1em; color: var(--white); }
.next-link__ja { font-size: var(--fs-sm); color: var(--silver); letter-spacing: .1em; }

/* faq：開閉式のQ&A */
.faq { border-top: 1px solid var(--line); min-width: 0; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 24px; padding-block: 22px; color: var(--black); font-weight: 500; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; font-family: var(--font-en); font-weight: 300; font-size: 20px; line-height: 1.2; color: var(--gray); transition: transform .3s var(--ease); }
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item p { padding-bottom: 24px; max-width: 36em; }

@media (max-width: 1080px) {
  .process__list--5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .c-split--text { grid-template-columns: 1fr; gap: 28px; }
  .next-links__grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .process__list--5 { grid-template-columns: 1fr 1fr; }
  .temp-scale__mark--main b { font-size: 30px; }
  .temp-scale__ticks span:nth-child(even) { visibility: hidden; }
}

/* 図の強調ノード（フルボ酸） */
.pd-key rect { fill: var(--black); stroke: var(--black); }
.pd-key .pd-t1 { fill: var(--white); }
.pd-key .pd-en { fill: var(--silver); }
.pd-muted rect { fill: var(--paper); stroke: var(--silver); }

/* c-table：比較表（横にはみ出す場合はスクロール） */
.c-table-wrap { overflow-x: auto; margin-top: clamp(40px, 5vw, 64px); }
.c-table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: var(--fs-sm); }
.c-table th, .c-table td { padding: 18px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.c-table thead th { font-weight: 400; color: var(--gray); font-size: 12px; letter-spacing: .08em; border-bottom-color: var(--silver); }
.c-table tbody th { font-weight: 500; color: var(--black); white-space: nowrap; }
.c-table tr.is-key th, .c-table tr.is-key td { background: var(--white); }
.c-table tr.is-key th { box-shadow: inset 2px 0 0 var(--black); }

/* where-list：自然の中の存在場所 */
.where-list { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: clamp(48px, 6vw, 80px); border-top: 1px solid var(--line); }
.where-list li { display: grid; gap: 8px; padding: 28px 24px 8px 0; min-width: 0; }
.where-list li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.where-list__en { font-family: var(--font-en); font-size: 11px; letter-spacing: .3em; color: var(--earth); }
.where-list__ja { font-size: var(--fs-md); font-weight: 500; color: var(--black); }
@media (max-width: 900px) {
  .where-list { grid-template-columns: 1fr 1fr; }
  .where-list li:nth-child(3) { padding-left: 0; border-left: 0; }
  .where-list li:nth-child(n+3) { border-top: 1px solid var(--line); }
}

/* ---------- タナカ技研について ---------- */
.philosophy__lead-en { font-family: var(--font-en); font-size: 12px; letter-spacing: .5em; color: var(--earth); margin-bottom: 24px; }

/* message-layout：写真（左・追従）＋代表メッセージ（右） */
.message-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: clamp(40px, 7vw, 110px); align-items: start; }
.message-layout__side { position: sticky; top: calc(var(--header-h) + 32px); display: grid; gap: 24px; }
.message-layout__side .c-eyebrow { order: -1; }

/* biz-card：リンクになった事業カード */
.biz-card { transition: background-color .4s var(--ease); }
.biz-card:hover { background: var(--paper); }
.biz-card__more { margin-top: 12px; font-size: 12.5px; color: var(--gray); letter-spacing: .08em; }

/* c-inline-link：本文中のリンク */
.c-inline-link { border-bottom: 1px solid var(--silver); transition: border-color .3s; }
.c-inline-link:hover { border-color: var(--black); }

.history dt { font-variant-numeric: tabular-nums; }

@media (max-width: 900px) {
  .message-layout { grid-template-columns: 1fr; }
  .message-layout__side { position: static; }
  .message .message-sign { text-align: left; }
}

/* ---------- FAQ / NEWS / CONTACT ---------- */
/* 写真なしの見出し帯（黒） */
.page-hero--plain { min-height: clamp(300px, 44vh, 440px); background: var(--black); }

/* FAQ：分類ナビ（左・追従）＋質問（右） */
.faq-page { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.faq-page__nav { position: sticky; top: calc(var(--header-h) + 32px); display: grid; gap: 4px; border-left: 1px solid var(--line); }
.faq-page__nav a { padding: 8px 0 8px 20px; font-size: var(--fs-sm); color: var(--gray); margin-left: -1px; border-left: 1px solid transparent; transition: color .3s, border-color .3s; }
.faq-page__nav a:hover { color: var(--black); border-color: var(--black); }
.faq-page__body { display: grid; gap: clamp(56px, 7vw, 96px); min-width: 0; }
.faq-group { scroll-margin-top: calc(var(--header-h) + 24px); }
.faq-group__title { display: grid; gap: 6px; margin-bottom: 20px; font-size: var(--fs-md); font-weight: 500; color: var(--black); letter-spacing: .08em; }
.faq-group__title span { font-family: var(--font-en); font-size: 11px; font-weight: 400; letter-spacing: .3em; color: var(--earth); }

/* NEWS：絞り込み */
.news-filter { display: flex; flex-wrap: wrap; gap: 8px; }
.news-filter__btn { min-height: 40px; padding: 0 20px; border: 1px solid var(--line); background: var(--white); color: var(--gray); font-family: var(--font-en); font-size: 11px; letter-spacing: .24em; cursor: pointer; transition: all .3s var(--ease); }
.news-filter__btn:hover { border-color: var(--black); color: var(--black); }
.news-filter__btn.is-active { background: var(--black); border-color: var(--black); color: var(--white); }
.news__list--page { margin-top: 40px; }
.news__row { display: grid; grid-template-columns: 7.5em 7em 1fr; gap: 24px; align-items: baseline; padding-block: 26px; border-bottom: 1px solid var(--line); }
.news__empty { padding-block: 40px; color: var(--gray); }

/* CONTACT：案内（左）＋フォーム（右） */
.contact-page { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(40px, 7vw, 110px); align-items: start; }
.contact-page__intro { position: sticky; top: calc(var(--header-h) + 32px); }
.contact-page__note { font-size: var(--fs-sm); color: var(--gray); }

.c-form { display: grid; gap: 28px; min-width: 0; }
.c-form__group { border: 0; margin: 0; padding: 0; min-width: 0; }
.c-form__row { display: grid; gap: 10px; }
.c-form__label { font-size: var(--fs-sm); font-weight: 500; color: var(--black); letter-spacing: .06em; padding: 0; }
.c-form__req { margin-left: 10px; font-size: 11px; font-weight: 400; color: var(--earth); letter-spacing: .1em; }
.c-input {
  width: 100%; min-height: 52px; padding: 12px 16px;
  border: 1px solid #cfd0ce; border-radius: 0; background: var(--white); color: var(--black);
  font: inherit; font-size: 16px; letter-spacing: .03em; transition: border-color .3s;
}
textarea.c-input { resize: vertical; line-height: 1.8; }
.c-input:focus { outline: none; border-color: var(--black); }
.c-input:user-invalid { border-color: #b3261e; }
.c-choice { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.c-choice label { position: relative; cursor: pointer; }
.c-choice input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.c-choice span { display: flex; align-items: center; min-height: 52px; padding: 10px 16px; border: 1px solid #cfd0ce; font-size: var(--fs-sm); line-height: 1.6; color: var(--ink); transition: all .3s var(--ease); }
.c-choice label:hover span { border-color: var(--black); }
.c-choice input:checked + span { background: var(--black); border-color: var(--black); color: var(--white); }
.c-choice input:focus-visible + span { outline: 1px solid var(--black); outline-offset: 3px; }
.c-form__agree label { display: flex; align-items: center; gap: 12px; font-size: var(--fs-sm); cursor: pointer; }
.c-form__agree input { width: 18px; height: 18px; accent-color: var(--black); }
.c-form__submit { justify-self: start; min-width: 240px; cursor: pointer; background: var(--white); font: inherit; font-size: var(--fs-sm); }
.form-error { color: #b3261e; font-size: var(--fs-sm); }
.form-status { padding: 16px 20px; border: 1px solid var(--line); background: var(--paper); font-size: var(--fs-sm); }

@media (max-width: 900px) {
  .faq-page, .contact-page { grid-template-columns: 1fr; }
  .faq-page__nav { position: static; display: flex; flex-wrap: wrap; gap: 8px; border: 0; }
  .faq-page__nav a { padding: 8px 14px; border: 1px solid var(--line); margin: 0; }
  .contact-page__intro { position: static; }
}
@media (max-width: 600px) {
  .c-choice { grid-template-columns: 1fr; }
  .news__row { grid-template-columns: auto 1fr; gap: 6px 16px; }
  .c-form__submit { justify-self: stretch; }
}

.c-form__trap { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* HERO写真の位置（夕日と山並みが入るように右寄せ） */
.hero .hero__media img { object-position: 72% 58%; }
.hero__place { display: grid; justify-items: end; gap: 6px; text-align: right; }
.hero__place small { font-family: var(--font-ja); font-size: 10.5px; letter-spacing: .1em; color: rgba(255,255,255,.6); }
@media (max-width: 600px) { .hero .hero__media img { object-position: 80% 60%; } }
.origin__band img { object-position: 50% 62%; }
.origin__place { display: grid; justify-items: end; gap: 6px; text-shadow: 0 1px 8px rgba(0,0,0,.35); }
.origin__place small { font-family: var(--font-ja); font-size: 10.5px; letter-spacing: .1em; }
/* 横位置の写真用（元画像が横長・小さめのもの） */
.c-media--landscape { aspect-ratio: 4 / 3; align-self: center; max-width: 620px; width: 100%; }
@media (max-width: 900px) { .c-media--landscape { max-width: none; } }
@media (max-width: 900px) { .c-media--square { aspect-ratio: 1 / 1; } }

/* photo-row：小さめの写真を3枚並べる（黒背景でも使用可） */
.photo-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(12px, 2vw, 24px); margin-top: clamp(56px, 7vw, 96px); }
.photo-row figure { display: grid; gap: 12px; min-width: 0; }
.photo-row figcaption { font-size: 12.5px; letter-spacing: .1em; color: var(--gray); }
.c-section--dark .photo-row figcaption { color: #9ea1a2; }
.c-media--photo { aspect-ratio: 1 / 1; max-width: 100%; }
.photo-row .c-media__note { font-size: 10.5px; }

/* FAQ内の商品写真 */
.faq__photos { display: grid; grid-template-columns: repeat(2, minmax(0, 200px)); gap: 16px; padding-bottom: 24px; }
.faq__photos figure { display: grid; gap: 8px; }
.faq__photos .c-media { background: var(--white); }
.faq__photos figcaption { font-size: 12px; color: var(--gray); }
@media (max-width: 600px) { .photo-row { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) { .c-media--photo { aspect-ratio: 1 / 1; } }
.photo-row .c-media__note, .faq__photos .c-media__note { background: rgba(0,0,0,.6); padding: 4px 8px; left: 8px; bottom: 8px; right: auto; }
/* 土壌写真：黒〜シルバーのトーンになじませる薄いオーバーレイ */
.c-media--soil { align-self: center; }
.c-media--soil::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(17,17,17,0) 55%, rgba(17,17,17,.28) 100%); pointer-events: none; }
@media (max-width: 900px) { .c-media--soil { aspect-ratio: 16 / 9; } }
.hero__media--soil img { object-position: 50% 38%; }

/* ==========================================================================
   飲み方・使い方（how-to-use.html）：同じ世界観のまま、少しやわらかく
   ========================================================================== */
.page-hero--use .hero__media img { object-position: 50% 45%; }
.page-hero--use .page-hero__title { font-size: clamp(1.05rem, .9rem + .8vw, 1.4rem); }

/* ページ内目次 */
.use-toc { display: flex; flex-wrap: wrap; gap: 8px; padding-block: 20px 0; }
.use-toc a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px; border: 1px solid var(--line); font-size: var(--fs-sm); color: var(--ink); letter-spacing: .06em; transition: border-color .3s, color .3s; }
.use-toc a:hover { border-color: var(--black); color: var(--black); }
.use-intro { padding-block: clamp(64px, 8vw, 110px); }

/* 3ステップ */
.use-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(12px, 2vw, 24px); margin-top: clamp(40px, 5vw, 64px); }
.use-step { background: var(--white); padding: clamp(24px, 3vw, 36px); display: grid; gap: 10px; align-content: start; min-width: 0; border-radius: 4px; }
.use-step__art { background: var(--paper); border-radius: 4px; padding: 16px; margin-bottom: 14px; }
.use-step__art svg { display: block; width: 100%; max-width: 220px; height: auto; margin-inline: auto; }
.use-step__no { font-family: var(--font-en); font-size: 12px; letter-spacing: .28em; color: var(--earth); }
.use-step__title { font-size: var(--fs-md); font-weight: 500; color: var(--black); letter-spacing: .06em; }
.use-step__text { font-size: var(--fs-sm); line-height: 1.9; }
.ill-line { fill: none; stroke: var(--black); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.ill-fill { fill: var(--white); }
.ill-powder { fill: #2a2522; }
.ill-dot { fill: #2a2522; }
.ill-water { fill: #dfe5e8; }
.ill-water--mixed { fill: #b8aea5; }
.ill-stream { stroke: #9fb0b8; stroke-width: 3; }
.ill-swirl { stroke: var(--white); stroke-width: 1.6; }
.ill-label { font-family: var(--font-en); font-size: 12px; fill: var(--gray); letter-spacing: .04em; }
.use-note { margin-top: 28px; padding: 20px 24px; border-left: 2px solid var(--earth); background: var(--white); display: grid; gap: 4px; font-size: var(--fs-sm); }
.use-note p:first-child { color: var(--black); font-weight: 500; }

/* 取り入れ方 */
.use-scenes { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: clamp(40px, 5vw, 64px); border-top: 1px solid var(--line); }
.use-scenes li { display: grid; gap: 8px; align-content: start; padding: 28px 24px 8px 0; min-width: 0; }
.use-scenes li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.use-scenes__en { font-family: var(--font-en); font-size: 11px; letter-spacing: .3em; color: var(--earth); }
.use-scenes__ja { font-size: var(--fs-md); font-weight: 500; color: var(--black); }
.use-scenes__text { font-size: var(--fs-sm); line-height: 1.85; }

/* 公式LINE */
.use-line__inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: clamp(32px, 6vw, 96px); align-items: end; }
.c-btn--line { gap: 14px; justify-content: center; min-width: 260px; }
.c-btn--line::after { display: none; }
.c-btn__icon { width: 20px; height: 20px; flex: none; }
.c-btn--line.is-pending { opacity: .55; cursor: default; pointer-events: none; }
.use-line__pending { flex-basis: 100%; font-size: 12px; color: #9ea1a2; }

/* 購入への導線（控えめ） */
.use-shop { padding-block: clamp(56px, 7vw, 88px); }
.use-shop__inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 24px 48px; }
.use-shop__inner > .c-stack { gap: 10px; max-width: 34em; }
.use-shop__title { font-size: var(--fs-md); font-weight: 500; color: var(--black); letter-spacing: .06em; }

/* ナビが9項目になったため、中くらいの幅で間隔を詰める */
@media (max-width: 1240px) and (min-width: 901px) {
  .site-nav ul { gap: 16px; }
  .site-nav a { letter-spacing: .14em; font-size: 11px; }
}

@media (max-width: 900px) {
  .use-steps { grid-template-columns: 1fr; }
  .use-step { grid-template-columns: 112px 1fr; column-gap: 20px; align-items: center; }
  .use-step__art { grid-row: span 3; margin: 0; padding: 8px; }
  .use-scenes { grid-template-columns: 1fr; }
  .use-scenes li, .use-scenes li + li { padding-left: 0; border-left: 0; }
  .use-scenes li + li { border-top: 1px solid var(--line); }
  .use-line__inner { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .c-btn--line { width: 100%; min-width: 0; }
  .use-toc { overflow-x: auto; flex-wrap: nowrap; }
  .use-toc a { white-space: nowrap; }
}

/* 飲み方ページ：商品ラベルの文字と見出しが重ならないよう、左側を暗くして写真を右へ */
.page-hero--use .hero__media img { object-position: 85% 40%; }
.page-hero--use .hero__media::after { background: linear-gradient(90deg, rgba(10,8,6,.88) 0%, rgba(10,8,6,.62) 50%, rgba(10,8,6,.25) 100%); }
@media (max-width: 900px) {
  .page-hero--use .hero__media::after { background: linear-gradient(180deg, rgba(10,8,6,.35) 0%, rgba(10,8,6,.55) 45%, rgba(10,8,6,.9) 100%); }
  .use-step { grid-template-columns: 96px 1fr; }
}
/* ナビ9項目：PC幅でもロゴと重ならない間隔に */
@media (min-width: 901px) { .site-nav ul { gap: clamp(14px, 1.5vw, 26px); } .site-nav a { letter-spacing: .16em; } }
.use-line__id { flex-basis: 100%; font-size: 12.5px; color: #9ea1a2; letter-spacing: .06em; }
.use-line__id span { font-family: var(--font-en); color: var(--silver-hi); letter-spacing: .08em; user-select: all; }

/* ---------- 飲み方ページの仕上げ（このページ内だけに適用） ---------- */
/* 見出しは「語のまとまり」単位で改行し、1〜2文字だけが次の行に落ちないようにする */
.use-page .nb { display: inline-block; }
.use-page .c-heading, .use-page .page-hero__title, .use-page .use-shop__title { word-break: keep-all; }
.use-page .c-body, .use-page .use-step__text, .use-page .use-scenes__text, .use-page .faq__item p, .use-page .use-note p { text-wrap: pretty; line-break: strict; }
.use-page .use-step__title, .use-page .use-scenes__ja, .use-page .faq__item summary { word-break: auto-phrase; text-wrap: pretty; }
/* ステップの写真（差し替え後） */
.use-step__art.has-photo { padding: 0; overflow: hidden; aspect-ratio: 4 / 3; }
.use-step__art.has-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 600px) {
  .use-page .c-heading--md { font-size: clamp(1.3rem, 5.6vw, 1.6rem); }
  .use-step { grid-template-columns: 88px 1fr; column-gap: 16px; }
}

/* 技術・製造ページのメインビジュアル（このページだけに適用） */
.hero__media--tech img { object-position: 46% 42%; }
.page-hero .hero__media--tech::after { background: linear-gradient(180deg, rgba(8,8,8,.55) 0%, rgba(8,8,8,.25) 38%, rgba(8,8,8,.78) 100%), linear-gradient(90deg, rgba(8,8,8,.45) 0%, rgba(8,8,8,0) 60%); }
@media (max-width: 600px) { .hero__media--tech img { object-position: 40% 50%; } }

/* 製造の現場（技術・製造ページの3枚）：同じ横長4:3にそろえ、スマホでは1列に */
.c-media--photo { aspect-ratio: 4 / 3; }
.c-media--photo img { object-fit: cover; object-position: 50% 50%; }
@media (max-width: 900px) { .c-media--photo { aspect-ratio: 4 / 3; } }
@media (max-width: 600px) {
  .photo-row { grid-template-columns: 1fr; gap: 28px; }
  .photo-row figcaption { font-size: 13px; }
}

/* 飲み方ページのメインビジュアル（容器とグラスが主役。文字側だけ控えめに暗く） */
.page-hero--use .hero__media--use img { object-position: 62% 55%; }
.page-hero--use .hero__media--use::after {
  background:
    linear-gradient(90deg, rgba(12,10,8,.72) 0%, rgba(12,10,8,.45) 32%, rgba(12,10,8,0) 62%),
    linear-gradient(180deg, rgba(12,10,8,.35) 0%, rgba(12,10,8,0) 22%, rgba(12,10,8,0) 60%, rgba(12,10,8,.4) 100%);
}
@media (max-width: 900px) {
  .page-hero--use .hero__media--use img { object-position: 66% 50%; }
  .page-hero--use .hero__media--use::after {
    background: linear-gradient(180deg, rgba(12,10,8,.35) 0%, rgba(12,10,8,0) 25%, rgba(12,10,8,.15) 50%, rgba(12,10,8,.72) 100%);
  }
}

/* メニュー9項目が横に収まらない幅（901〜1150px）は、スマホと同じ開閉式メニューにする */
@media (min-width: 901px) and (max-width: 1150px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: calc(var(--header-h) + env(safe-area-inset-top, 0px)) 0 0 0;
    background: var(--black); color: var(--white);
    padding: 40px var(--gutter);
    opacity: 0; visibility: hidden; transition: opacity .4s var(--ease), visibility .4s;
  }
  .nav-open .site-nav { opacity: 1; visibility: visible; }
  .nav-open .site-header { background: var(--black); color: var(--white); border-color: #262626; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav li { border-bottom: 1px solid #262626; }
  .site-nav a { display: block; padding-block: 18px; font-size: 14px; letter-spacing: .22em; border: 0; }
  .site-nav .is-contact { margin-top: 28px; text-align: center; }
}
@media (max-width: 900px) { .page-hero--use .hero__media--use img { object-position: 58% 50%; } }

/* 品質・安全性ページのメインビジュアル（このページだけに適用） */
.hero__media--quality img { object-position: 58% 50%; }
.page-hero .hero__media--quality::after {
  background:
    linear-gradient(90deg, rgba(10,10,10,.7) 0%, rgba(10,10,10,.42) 35%, rgba(10,10,10,.08) 65%, rgba(10,10,10,0) 100%),
    linear-gradient(180deg, rgba(10,10,10,.45) 0%, rgba(10,10,10,0) 25%, rgba(10,10,10,0) 55%, rgba(10,10,10,.55) 100%);
}
/* 「写真はイメージです」の小さな注記（画像の右下） */
.hero__image-note { position: absolute; z-index: 2; right: var(--gutter); bottom: 16px; margin: 0; font-size: 10.5px; letter-spacing: .1em; color: rgba(255,255,255,.65); }
@media (max-width: 900px) {
  .hero__media--quality img { object-position: 64% 50%; }
  .page-hero .hero__media--quality::after { background: linear-gradient(180deg, rgba(10,10,10,.45) 0%, rgba(10,10,10,.1) 30%, rgba(10,10,10,.25) 55%, rgba(10,10,10,.78) 100%); }
  .hero__image-note { bottom: auto; top: calc(var(--header-h) + 10px); }
}

/* 基本の飲み方：写真版（正方形1:1でそろえる。スマホでは写真を上に大きく） */
.use-step__art.has-photo { aspect-ratio: 1 / 1; border-radius: 4px; background: var(--paper); }
@media (max-width: 900px) {
  .use-step:has(.has-photo) { grid-template-columns: 1fr; }
  .use-step:has(.has-photo) .use-step__art { grid-row: auto; margin: 0 0 14px; width: 100%; max-width: 420px; }
}

/* 原料供給・OEMページのメインビジュアル（右側の粉末・容器を見せ、左側は文字のために暗く） */
.hero__media--oem img { object-position: 85% 50%; }
.page-hero .hero__media--oem::after {
  background:
    linear-gradient(90deg, rgba(8,8,8,.55) 0%, rgba(8,8,8,.25) 40%, rgba(8,8,8,0) 65%),
    linear-gradient(180deg, rgba(8,8,8,.35) 0%, rgba(8,8,8,0) 25%, rgba(8,8,8,0) 60%, rgba(8,8,8,.35) 100%);
}
@media (max-width: 900px) {
  .hero__media--oem img { object-position: 80% 50%; }
  .page-hero .hero__media--oem::after { background: linear-gradient(180deg, rgba(8,8,8,.35) 0%, rgba(8,8,8,0) 30%, rgba(8,8,8,.2) 55%, rgba(8,8,8,.75) 100%); }
}
/* 原料袋の写真：パレットと袋の積み上がりが見えるよう中央寄り */
#material .c-media img { object-position: 45% 55%; }
#material .hero__image-note { bottom: 10px; right: 12px; }
#material .hero__image-note { top: auto; bottom: 10px; right: 10px; padding: 3px 8px; background: rgba(0,0,0,.45); color: rgba(255,255,255,.85); }

/* タナカ技研についてページのメインビジュアル（右側の手元を見せ、左側の暗がりに文字。暗さは最小限） */
.hero__media--about img { object-position: 70% 50%; }
.page-hero .hero__media--about::after {
  background:
    linear-gradient(90deg, rgba(8,8,8,.62) 0%, rgba(8,8,8,.42) 30%, rgba(8,8,8,.12) 48%, rgba(8,8,8,0) 58%),
    linear-gradient(180deg, rgba(8,8,8,.3) 0%, rgba(8,8,8,0) 22%, rgba(8,8,8,0) 60%, rgba(8,8,8,.3) 100%);
}
@media (max-width: 900px) {
  .hero__media--about img { object-position: 66% 50%; }
  .page-hero .hero__media--about::after { background: linear-gradient(180deg, rgba(8,8,8,.3) 0%, rgba(8,8,8,0) 25%, rgba(8,8,8,.2) 45%, rgba(8,8,8,.68) 68%, rgba(8,8,8,.82) 100%); }
}

/* ==========================================================================
   タナカ技研について：温かみを足すブラッシュアップ（company.html だけに適用）
   ========================================================================== */
:root { --earth-soft: #f1ebe3; --earth-line: #d8cbbb; }

/* PHILOSOPHY：理念（左）＋自然素材の写真（右） */
.about-philosophy { padding-block: clamp(96px, 12vw, 170px); }
.about-philosophy__grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(40px, 7vw, 110px); align-items: center; }
.about-philosophy__text .c-eyebrow { margin-bottom: clamp(32px, 4vw, 52px); }
.about-philosophy__photo { aspect-ratio: 4 / 5; border-radius: 2px; }
.about-philosophy__photo img { object-position: 50% 50%; }

/* MESSAGE：代表写真（左・追従）＋本文（右） */
.about-message__layout { grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.4fr); align-items: start; }
.about-message__side { gap: 28px; }
.about-portrait { margin: 0; display: grid; gap: 18px; }
.about-portrait__frame { position: relative; aspect-ratio: 4 / 5; overflow: hidden; border-radius: 2px; background: linear-gradient(160deg, var(--earth-soft) 0%, #e4d9cb 100%); }
.about-portrait__frame > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

.about-message .message { max-width: 34em; }
.about-message .message__title { line-height: 1.75; }
.about-message .message__body { font-size: 15.5px; line-height: 2.15; gap: 1.6em; margin-top: 2.6em; color: var(--ink); }
.about-message .message__close { margin-top: 3em; padding: 4px 0 4px 1.4em; border-left: 2px solid var(--earth); font-size: var(--fs-md); letter-spacing: .1em; }
.about-message .message__close + .c-body { margin-top: 1em; padding-left: calc(1.4em + 2px); }
.about-message .message .message-sign { margin-top: 3em; }

/* BUSINESS：番号つきカード */
.about-biz { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 2vw, 28px); margin-top: clamp(48px, 6vw, 80px); }
.about-biz__card {
  position: relative; display: flex; flex-direction: column; gap: 12px; min-width: 0;
  padding: clamp(30px, 3.2vw, 44px) clamp(26px, 2.8vw, 40px) clamp(28px, 3vw, 38px);
  background: #faf8f5; border: 1px solid #ece6de; border-radius: 2px;
  transition: background-color .4s var(--ease), border-color .4s var(--ease);
}
.about-biz__card::before { content: ""; position: absolute; left: 0; top: 0; width: 48px; height: 2px; background: var(--earth); transition: width .5s var(--ease); }
.about-biz__card:hover { background: var(--earth-soft); border-color: var(--earth-line); }
.about-biz__card:hover::before { width: 96px; }
.about-biz__num { font-family: var(--font-en); font-size: clamp(2.2rem, 1.6rem + 1.6vw, 3rem); font-weight: 300; line-height: 1; letter-spacing: .04em; color: var(--earth); opacity: .85; margin-bottom: 18px; }
.about-biz__card .oem__ja { margin-bottom: 4px; }
.about-biz__card .biz-card__more { margin-top: auto; padding-top: 18px; border-top: 1px solid #ece6de; color: var(--earth); }

@media (max-width: 900px) {
  .about-philosophy__grid { grid-template-columns: 1fr; gap: 44px; }
  .about-philosophy__photo { aspect-ratio: 3 / 2; }
  .about-message__layout { grid-template-columns: 1fr; gap: 40px; }
  .about-portrait { max-width: 260px; }
  .about-message .message { max-width: none; }
  .about-message .message__body { font-size: 15px; line-height: 2.05; }
  .about-biz { grid-template-columns: 1fr; }
  .about-biz__card { display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: 20px; row-gap: 10px; }
  .about-biz__num { grid-row: 1 / span 2; margin: 0; font-size: 2.2rem; align-self: start; }
  .about-biz__card > :not(.about-biz__num) { grid-column: 2; }
}
.about-message .message__close { word-break: auto-phrase; }
@media (max-width: 900px) { .about-message .message__close { font-size: 1rem; } }

/* ---------- お知らせ・コラム（一覧の見出し帯を低めに／詳細ページ） ---------- */
.page-hero--news { min-height: clamp(250px, 36vh, 360px); }
.news__list--page .news__item a:hover .news__title { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.news-article { max-width: 760px; }
.news-article__meta { display: flex; align-items: baseline; gap: 24px; }
.news-article__title { margin-top: 18px; padding-bottom: 32px; border-bottom: 1px solid var(--line); font-size: var(--fs-lg); font-weight: 500; line-height: 1.6; letter-spacing: .06em; color: var(--black); }
.news-article__body { display: grid; gap: 1.4em; margin-top: 36px; max-width: none; line-height: 2.1; }
.news-article__back { margin-top: clamp(56px, 7vw, 88px); padding-top: 32px; border-top: 1px solid var(--line); }
@media (max-width: 600px) {
  .news-article__meta { gap: 16px; }
  .news-article__title { padding-bottom: 24px; }
  .news-article__body { margin-top: 28px; }
}
.news-article__title { word-break: auto-phrase; text-wrap: balance; }

/* ---------- お問い合わせフォーム：必須・任意の表示、入力エラー、送信設定、完了表示 ---------- */
.c-form-wrap { display: grid; gap: 28px; min-width: 0; }
.c-form__legend { font-size: 12.5px; color: var(--gray); }
.c-form__legend .c-form__req { margin: 0 4px 0 0; }
.c-form__req { display: inline-block; margin-left: 10px; padding: 1px 8px; border: 1px solid var(--earth); font-size: 10.5px; line-height: 1.6; font-weight: 400; color: var(--earth); letter-spacing: .1em; vertical-align: 1px; }
.c-form__opt { display: inline-block; margin-left: 10px; padding: 1px 8px; border: 1px solid #cfd0ce; font-size: 10.5px; line-height: 1.6; font-weight: 400; color: var(--gray); letter-spacing: .1em; vertical-align: 1px; }
.c-form__hint { font-size: 12.5px; line-height: 1.8; color: var(--gray); }
.c-form__err { font-size: 12.5px; color: #b3261e; }
.c-input::placeholder { color: #a9aaa8; }
.c-input.is-invalid, .c-input[aria-invalid="true"] { border-color: #b3261e; }
.c-form__group.is-invalid .c-choice span { border-color: #d9a29d; }
.c-form__agree label > span .c-form__req { margin-left: 8px; }
.c-form__agree .c-form__err { margin-top: 2px; }
.form-error { padding: 12px 16px; border-left: 2px solid #b3261e; background: #fbf3f2; }
.form-status.is-warn { border-color: #e2c9a6; background: #fbf7f0; color: #6b4e2e; }
.form-setup { padding: 16px 20px; border: 1px dashed #c9b49c; background: #fbf8f3; font-size: 13px; line-height: 1.8; color: #6b4e2e; display: grid; gap: 8px; }
.form-setup.is-ok { border-color: #9fb59a; background: #f4f8f3; color: #3e5a39; }
.form-setup__title { font-weight: 500; letter-spacing: .06em; }
.form-setup__state { word-break: break-all; }
.form-setup__fill { justify-self: start; padding: 6px 14px; border: 1px solid currentColor; background: transparent; color: inherit; font: inherit; font-size: 12.5px; cursor: pointer; }
.form-done { padding: clamp(36px, 5vw, 56px) clamp(24px, 4vw, 48px); background: var(--paper); display: grid; gap: 14px; }
.form-done:focus { outline: none; }
.form-done__en { font-family: var(--font-en); font-size: 11px; letter-spacing: .4em; color: var(--earth); }
.form-done__title { font-size: var(--fs-md); font-weight: 500; color: var(--black); letter-spacing: .06em; }
@media (max-width: 600px) {
  .c-form { gap: 24px; }
  .c-choice span { min-height: 50px; }
  .c-form__agree label { align-items: flex-start; }
  .c-form__agree input { margin-top: 3px; flex: none; }
}
.form-setup[hidden], .form-done[hidden], .c-form[hidden] { display: none; }

/* MESSAGE の写真（手元のイメージ画像）。手元と原料が切れないよう中央やや上 */
.about-portrait__frame > img { object-position: 50% 62%; }
.about-portrait__note { font-size: 10.5px; letter-spacing: .1em; color: var(--gray); text-align: right; margin-top: -8px; }
@media (max-width: 900px) { .about-message .about-portrait { max-width: 420px; } }

/* PHILOSOPHY の芽の写真：芽が中心に来るよう右寄り */
.about-philosophy__photo img { object-position: 68% 48%; }
@media (max-width: 900px) { .about-philosophy__photo img { object-position: 72% 50%; } }

/* お問い合わせ：送信完了画面の控え */
.form-receipt { margin-top: 18px; padding-top: 24px; border-top: 1px solid var(--line); display: grid; gap: 14px; min-width: 0; }
.form-receipt__head { font-size: var(--fs-sm); font-weight: 500; color: var(--black); letter-spacing: .06em; }
.form-receipt__list { margin: 0; display: grid; border-top: 1px solid var(--line); background: var(--white); }
.form-receipt__list > div { display: grid; grid-template-columns: 9em minmax(0, 1fr); gap: 4px 16px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.form-receipt__list dt { font-size: 12.5px; color: var(--gray); letter-spacing: .04em; }
.form-receipt__list dd { margin: 0; font-size: var(--fs-sm); color: var(--black); white-space: pre-wrap; overflow-wrap: anywhere; min-width: 0; }
.form-receipt__note { font-size: 12.5px; line-height: 1.8; color: var(--gray); }
.form-receipt__actions { display: grid; gap: 8px; justify-items: start; }
.form-receipt__copy { cursor: pointer; background: var(--white); font: inherit; font-size: var(--fs-sm); }
.form-receipt__copied { font-size: 12.5px; color: var(--earth); min-height: 1.6em; }
.form-receipt__fallback[hidden] { display: none; }
.form-receipt__fallback.is-visible { position: static; width: 100%; height: 10em; opacity: 1; padding: 12px; border: 1px solid #cfd0ce; font: inherit; font-size: 14px; }
@media (max-width: 600px) {
  .form-receipt__list > div { grid-template-columns: 1fr; }
  .form-receipt__copy { width: 100%; justify-content: center; }
  .form-receipt__actions { justify-items: stretch; }
}
@media (max-width: 600px) { .form-receipt__copy { padding-inline: 18px; gap: 14px; font-size: 13px; letter-spacing: .04em; } }

/* ---------- タナカ技研が選んだ食品（selection.html） ---------- */
.page-hero--short { min-height: clamp(250px, 36vh, 360px); }
.selection-item__stage { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(40px, 7vw, 110px); align-items: center; }
.selection-item__photo { aspect-ratio: 4 / 5; background: #efe9e1; }
.selection-item__name { font-size: var(--fs-xl); font-weight: 500; letter-spacing: .1em; line-height: 1.3; color: var(--black); }
.selection-item__name span { display: block; margin-top: 6px; font-family: var(--font-en); font-weight: 300; font-size: .42em; letter-spacing: .3em; color: var(--earth); }
.selection-item__kind { margin-top: 10px; color: var(--gray); letter-spacing: .06em; }
.selection-item__price { font-family: var(--font-en); font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.1rem); font-weight: 300; letter-spacing: .06em; color: var(--black); font-variant-numeric: tabular-nums; }
.selection-item__price span { font-family: var(--font-ja); font-size: .5em; letter-spacing: .04em; margin-left: 4px; }
.selection-item__price small { font-family: var(--font-ja); font-size: .44em; color: var(--gray); margin-left: 14px; letter-spacing: .08em; }
.selection-item__note { font-size: 12.5px; line-height: 1.9; color: var(--gray); max-width: 36em; }
.selection-points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: clamp(40px, 5vw, 64px); }
.selection-points li { background: var(--white); padding: clamp(24px, 2.6vw, 34px); display: grid; gap: 8px; align-content: start; min-width: 0; }
.selection-points__en { font-family: var(--font-en); font-size: 10.5px; letter-spacing: .3em; color: var(--earth); }
.selection-points__ja { font-size: var(--fs-md); font-weight: 500; color: var(--black); }
.selection-points__desc { font-size: var(--fs-sm); line-height: 1.9; color: var(--ink); }
.selection-detail__spec { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(40px, 6vw, 96px); align-items: center; margin-top: clamp(56px, 7vw, 96px); }
.selection-detail__photo { aspect-ratio: 3 / 4; }
.home-selection__inner { display: grid; grid-template-columns: minmax(0, 280px) minmax(0, 1fr); gap: clamp(32px, 6vw, 88px); align-items: center; }
.home-selection__photo { aspect-ratio: 4 / 5; background: #efe9e1; display: block; }
.home-selection .c-body { max-width: 34em; }
@media (max-width: 900px) {
  .selection-item__stage, .selection-detail__spec { grid-template-columns: 1fr; }
  .selection-item__photo, .selection-detail__photo { max-width: 460px; }
  .selection-points { grid-template-columns: 1fr 1fr; }
  .home-selection__inner { grid-template-columns: minmax(0, 140px) minmax(0, 1fr); gap: 24px; align-items: start; }
}
@media (max-width: 600px) {
  .selection-points { grid-template-columns: 1fr; }
  .home-selection__inner { grid-template-columns: 1fr; }
  .home-selection__photo { max-width: 220px; }
}