/* ============================================================
   石しるべ｜天然石Lab.  公開サイト スタイル
   シンプル / ファッショナブル / 図鑑・ラボ感
   ============================================================ */

:root {
  --bg:        #F8F5EF;
  --surface:   #FFFFFF;
  --ink:       #211D18;
  --ink-sub:   #6A6258;
  --accent:    #7E8F6A;   /* セージグリーン（差し色は控えめに）*/
  --accent-dk: #66765191;
  --accent-deep:#586748;
  --charcoal:  #201C17;   /* 反転セクション用チャコール */
  --soft:      #E8E0D4;   /* 淡いアクセント */
  --soft-2:    #F1ECE3;
  --link:      #586748;
  --pr:        #AF8A50;
  --line:      #E7E0D4;
  --line-soft: #EFEAE0;

  --radius:    14px;
  --radius-sm: 8px;
  --shadow:    0 1px 2px rgba(33,29,24,.03), 0 10px 30px rgba(33,29,24,.05);
  --shadow-lg: 0 16px 50px rgba(33,29,24,.09);

  --serif:  "Zen Old Mincho", "Hiragino Mincho ProN", serif;
  --display:"Cormorant Garamond", "Zen Old Mincho", serif;
  --sans:   "Zen Kaku Gothic New", system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", sans-serif;

  --maxw: 1200px;
}

/* ---- reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.95;
  font-size: 15.5px;
  letter-spacing: .015em;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-decoration: none; transition: color .25s, opacity .25s; }
a:hover { opacity: .7; }
h1, h2, h3 { line-height: 1.42; font-weight: 700; letter-spacing: .015em; }
ul { margin: 0; padding: 0; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--accent);
  color: #fff; padding: 10px 16px; z-index: 200; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---- layout ---- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 760px; }
.center { text-align: center; }

.section { padding: 92px 0; }
.section--alt { background: var(--soft-2); }
.section--philosophy { padding: 110px 0; }

.section__kicker {
  font-family: var(--display);
  letter-spacing: .42em; font-size: .82rem; color: var(--accent-deep);
  margin: 0 0 14px; text-transform: uppercase; font-weight: 600;
}
.section__title {
  font-family: var(--serif);
  font-size: clamp(1.65rem, 3.6vw, 2.4rem); margin: 0; letter-spacing: .03em; font-weight: 500; line-height: 1.45;
}
.section__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px; margin-bottom: 48px; flex-wrap: wrap;
}
.link-more {
  font-family: var(--display); font-size: 1.02rem; color: var(--accent-deep); font-weight: 600;
  white-space: nowrap; letter-spacing: .04em; position: relative; padding-bottom: 3px;
}
.link-more::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: var(--accent-deep); transform: scaleX(.4); transform-origin: left; transition: transform .3s; }
.link-more:hover { opacity: 1; }
.link-more:hover::after { transform: scaleX(1); }
.lead-text { color: var(--ink-sub); font-size: 1.05rem; margin: 0 0 1em; }

/* ---- buttons（立体・押せる質感）---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font-family: var(--sans); font-weight: 600; cursor: pointer; position: relative;
  border: 1px solid transparent; border-radius: 999px;
  padding: 12px 26px; font-size: .95rem; text-decoration: none;
  transition: transform .1s ease, box-shadow .18s ease, filter .18s ease, background .2s;
  will-change: transform;
}
.btn:hover { opacity: 1; }
.btn:focus-visible { outline: 3px solid rgba(91,124,153,.5); outline-offset: 2px; }

/* アクセント（塗り）: 下に厚みの影を出して立体に。押すと沈む */
.btn--accent {
  background: linear-gradient(180deg, #91a282 0%, var(--accent) 52%, var(--accent-deep) 100%);
  color: #fff;
  box-shadow: 0 4px 0 var(--accent-deep), 0 9px 18px rgba(92,107,74,.34), inset 0 1px 0 rgba(255,255,255,.4);
  text-shadow: 0 1px 1px rgba(60,72,46,.35);
}
.btn--accent:hover { filter: brightness(1.05); transform: translateY(-1px); box-shadow: 0 5px 0 var(--accent-deep), 0 12px 22px rgba(92,107,74,.4), inset 0 1px 0 rgba(255,255,255,.45); }
.btn--accent:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--accent-deep), 0 3px 8px rgba(92,107,74,.32), inset 0 1px 0 rgba(255,255,255,.3); }

/* ゴースト（白）: 紙のような厚み */
.btn--ghost {
  background: linear-gradient(180deg, #ffffff 0%, #f3efe7 100%);
  color: var(--ink); border-color: var(--line);
  box-shadow: 0 4px 0 #e2dacc, 0 8px 16px rgba(47,42,37,.10), inset 0 1px 0 rgba(255,255,255,.8);
}
.btn--ghost:hover { color: var(--accent-deep); border-color: var(--soft); transform: translateY(-1px); box-shadow: 0 5px 0 #e2dacc, 0 11px 20px rgba(47,42,37,.12), inset 0 1px 0 rgba(255,255,255,.85); }
.btn--ghost:active { transform: translateY(3px); box-shadow: 0 1px 0 #e2dacc, 0 3px 8px rgba(47,42,37,.1); }

@media (prefers-reduced-motion: reduce) { .btn { transition: none; } .btn:hover, .btn:active { transform: none; } }

.btn--lg { padding: 15px 34px; font-size: 1rem; }
.btn--sm { padding: 9px 18px; font-size: .85rem; }
.btn--block { display: flex; width: 100%; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(248,245,239,.78);
  backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand__mark {
  width: 42px; height: 42px; border-radius: 10px; overflow: hidden;
  background: var(--charcoal); display: grid; place-items: center;
  box-shadow: 0 6px 16px rgba(33,29,24,.2);
}
.brand__mark img { width: 100%; height: 100%; object-fit: cover; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-family: var(--serif); font-weight: 500; font-size: 1.22rem; color: var(--ink); letter-spacing: .08em; }
.brand__sub { font-family: var(--display); font-size: .72rem; letter-spacing: .28em; color: var(--accent-deep); text-transform: uppercase; margin-top: 2px; }

.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { color: var(--ink); font-size: .9rem; font-weight: 500; letter-spacing: .05em; position: relative; }
.site-nav a:not(.btn)::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 100%; height: 1px; background: var(--accent-deep); transform: scaleX(0); transform-origin: left; transition: transform .3s; }
.site-nav a:not(.btn):hover { opacity: 1; }
.site-nav a:not(.btn):hover::after { transform: scaleX(1); }
.site-nav a.btn { color: #fff; }
.site-nav a.btn--accent:hover { color: #fff; }

.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; padding: 10px; }
.nav-toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; margin: 5px 0; transition: .25s; }

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; overflow: hidden; padding: clamp(56px, 9vw, 110px) 0; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 70% at 85% 15%, rgba(126,143,106,.16), transparent 60%),
    radial-gradient(50% 60% at 10% 90%, rgba(91,124,153,.12), transparent 60%);
}
.hero__inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 12px; font-size: .8rem; letter-spacing: .14em; color: var(--accent-deep);
  margin: 0 0 26px; font-weight: 500;
}
.hero__eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--accent-deep); display: inline-block; }
.hero__title { font-family: var(--serif); font-weight: 500; font-size: clamp(2rem, 5vw, 3.4rem); margin: 0 0 26px; letter-spacing: .03em; line-height: 1.5; }
.hero__title em { font-style: normal; color: var(--accent-deep); border-bottom: 2px solid var(--soft); }
.hero__lead { color: var(--ink-sub); font-size: 1.06rem; max-width: 30em; margin: 0 0 36px; line-height: 1.95; }
.hero__cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* トップのボタンを球体のような立体感に */
.hero__cta .btn {
  position: relative; overflow: hidden; border-radius: 999px;
  padding: 17px 38px; font-weight: 700; letter-spacing: .02em;
}
.hero__cta .btn::before { /* 上部の光沢ハイライト */
  content: ""; position: absolute; left: 9%; right: 9%; top: 7%; height: 42%;
  border-radius: 999px; pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,.6), rgba(255,255,255,0));
}
.hero__cta .btn--accent {
  background: radial-gradient(120% 150% at 50% 16%, #aebd96 0%, var(--accent) 46%, var(--accent-deep) 100%);
  box-shadow: 0 7px 0 var(--accent-deep), 0 18px 30px rgba(92,107,74,.42),
              inset 0 2px 3px rgba(255,255,255,.55), inset 0 -8px 14px rgba(54,66,40,.4);
}
.hero__cta .btn--accent:hover { transform: translateY(-2px); filter: brightness(1.05);
  box-shadow: 0 9px 0 var(--accent-deep), 0 22px 36px rgba(92,107,74,.48), inset 0 2px 3px rgba(255,255,255,.6), inset 0 -8px 14px rgba(54,66,40,.4); }
.hero__cta .btn--accent:active { transform: translateY(4px); box-shadow: 0 2px 0 var(--accent-deep), 0 6px 12px rgba(92,107,74,.4), inset 0 -4px 8px rgba(54,66,40,.4); }
.hero__cta .btn--ghost {
  background: radial-gradient(120% 150% at 50% 16%, #ffffff 0%, #f4efe6 55%, #e9e2d5 100%);
  box-shadow: 0 7px 0 #d8cfbe, 0 16px 26px rgba(47,42,37,.16),
              inset 0 2px 3px rgba(255,255,255,.9), inset 0 -8px 14px rgba(160,148,128,.28);
}
.hero__cta .btn--ghost:hover { transform: translateY(-2px); color: var(--accent-deep);
  box-shadow: 0 9px 0 #d8cfbe, 0 20px 30px rgba(47,42,37,.2), inset 0 2px 3px rgba(255,255,255,.9), inset 0 -8px 14px rgba(160,148,128,.28); }
.hero__cta .btn--ghost:active { transform: translateY(4px); box-shadow: 0 2px 0 #d8cfbe, 0 6px 12px rgba(47,42,37,.16), inset 0 -4px 8px rgba(160,148,128,.3); }

.hero__visual { position: relative; height: 320px; }
.hero__gem {
  position: absolute; border-radius: 50% 50% 48% 52% / 52% 50% 50% 48%;
  filter: blur(.2px);
  background: linear-gradient(140deg, #fff6, #fff0), var(--g, var(--accent));
  box-shadow: inset 0 6px 18px rgba(255,255,255,.5), var(--shadow-lg);
  animation: float 7s ease-in-out infinite;
}
.hero__gem--1 { width: 190px; height: 190px; right: 30px; top: 20px; --g: linear-gradient(140deg,#cdd9e4,#9fb3c4); }
.hero__gem--2 { width: 120px; height: 120px; right: 150px; top: 150px; --g: linear-gradient(140deg,#f0dadf,#d6a9bf); animation-delay: -2s; }
.hero__gem--3 { width: 90px;  height: 90px;  right: 10px;  top: 190px; --g: linear-gradient(140deg,#d8e0c9,#aebd91); animation-delay: -4s; }
@keyframes float { 0%,100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-14px) rotate(4deg); } }

/* ============================================================
   PHILOSOPHY
   ============================================================ */
.section--philosophy .section__title { margin-bottom: 24px; }

/* ============================================================
   WISH GRID
   ============================================================ */
.wish-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; list-style: none; }
.wish-chip {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 22px 22px; height: 100%; transition: transform .25s, box-shadow .25s, border-color .25s;
}
.wish-chip:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--soft); opacity: 1; }
.wish-chip__name { font-family: var(--serif); font-weight: 500; font-size: 1.1rem; color: var(--ink); letter-spacing: .05em; }
.wish-chip__desc { font-size: .79rem; color: var(--ink-sub); line-height: 1.7; }

/* ============================================================
   STONE GRID & CARD
   ============================================================ */
.stone-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px 26px; }
.stone-card { display: flex; flex-direction: column; background: transparent; }
.stone-card:hover { opacity: 1; }
.stone-card__thumb {
  position: relative; aspect-ratio: 1 / 1; display: grid; place-items: center;
  border-radius: var(--radius); overflow: hidden;
  background:
    radial-gradient(120% 120% at 30% 20%, #ffffffcc, transparent 55%),
    var(--tint, var(--soft));
}
.stone-card__thumb img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0;
  transition: opacity .4s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.stone-card:hover .stone-card__img { transform: scale(1.07); }
.stone-card__img--raw { opacity: 0; }
.stone-card__thumb.has-raw:hover .stone-card__img--raw { opacity: 1; }
.stone-card__hint {
  position: absolute; right: 10px; bottom: 10px; z-index: 2;
  background: rgba(33,29,24,.7); color: #fff; font-size: .64rem; letter-spacing: .1em;
  padding: 3px 10px; border-radius: 999px; opacity: 0; transition: opacity .3s; pointer-events: none; backdrop-filter: blur(2px);
}
.stone-card__thumb.has-raw:hover .stone-card__hint { opacity: 1; }
.stone-card__gem {
  width: 64px; height: 64px; border-radius: 50% 50% 48% 52% / 52% 50% 50% 48%;
  background: linear-gradient(145deg, #ffffffbb, #ffffff22);
  display: grid; place-items: center; font-family: var(--serif); font-size: 1.5rem; color: #ffffffee;
  box-shadow: inset 0 4px 10px rgba(255,255,255,.6), 0 6px 16px rgba(33,29,24,.12);
  text-shadow: 0 1px 2px rgba(33,29,24,.25);
}
.stone-card__body { padding: 15px 2px 4px; display: flex; flex-direction: column; gap: 3px; }
.stone-card__name { font-family: var(--serif); font-weight: 500; font-size: 1.12rem; color: var(--ink); letter-spacing: .05em; }
.stone-card__en { font-family: var(--display); font-size: .76rem; letter-spacing: .2em; color: var(--accent-deep); text-transform: uppercase; }
.stone-card__summary { font-size: .82rem; color: var(--ink-sub); line-height: 1.7; margin-top: 6px; }

/* ============================================================
   PAGE HEAD / BREADCRUMBS
   ============================================================ */
.breadcrumbs { border-bottom: 1px solid var(--line); background: var(--bg); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 12px 24px; font-size: .8rem; color: var(--ink-sub); }
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li:not(:last-child)::after { content: "›"; color: var(--line); }
.breadcrumbs a { color: var(--ink-sub); }
.breadcrumbs [aria-current] { color: var(--ink); }

.page-head { padding: 76px 0 8px; }
.page-head__title { font-family: var(--serif); font-weight: 500; font-size: clamp(1.85rem, 4vw, 2.7rem); margin: 8px 0 18px; letter-spacing: .03em; line-height: 1.45; }
.page-head__lead { color: var(--ink-sub); font-size: 1.02rem; line-height: 1.95; }

/* ---- filter bar ---- */
.filter-bar { display: flex; align-items: flex-end; gap: 18px; flex-wrap: wrap; padding: 20px 22px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 24px; }
.filter-bar__group { display: flex; flex-direction: column; gap: 6px; }
.filter-bar__group label { font-size: .76rem; color: var(--ink-sub); letter-spacing: .04em; }
.filter-bar select {
  font-family: var(--sans); font-size: .92rem; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 999px; padding: 9px 18px; min-width: 170px; cursor: pointer;
}
.filter-bar__reset { font-size: .82rem; color: var(--link); margin-left: auto; align-self: center; }
.result-count { font-size: .85rem; color: var(--ink-sub); margin: 0 0 18px; }
.empty-state { text-align: center; color: var(--ink-sub); padding: 48px 0; }

/* ============================================================
   STONE DETAIL
   ============================================================ */
.stone-hero { padding: 52px 0; background: linear-gradient(180deg, var(--tint, var(--soft)) 0%, transparent 100%); }
.stone-hero__inner { display: grid; grid-template-columns: 280px 1fr; gap: 44px; align-items: center; }
.stone-hero__visual {
  aspect-ratio: 1; border-radius: 24px; display: grid; place-items: center; overflow: hidden;
  background: radial-gradient(120% 120% at 30% 20%, #fff, transparent 60%), var(--tint, var(--soft));
  box-shadow: var(--shadow-lg);
}
.stone-hero__visual img { width: 100%; height: 100%; object-fit: cover; }
.stone-hero__gem {
  width: 120px; height: 120px; border-radius: 50% 50% 48% 52% / 52% 50% 50% 48%;
  background: linear-gradient(145deg, #fff, #ffffff44);
  display: grid; place-items: center; font-family: var(--serif); font-size: 2.6rem; color: #fff;
  box-shadow: inset 0 6px 16px rgba(255,255,255,.7), 0 10px 24px rgba(47,42,37,.16);
  text-shadow: 0 2px 4px rgba(47,42,37,.25);
}
.stone-hero__kana { font-size: .82rem; letter-spacing: .1em; color: var(--ink-sub); margin: 0 0 4px; }
.stone-hero__name { font-family: var(--serif); font-size: clamp(2rem, 5vw, 2.9rem); margin: 0; }
.stone-hero__en { font-size: .82rem; letter-spacing: .16em; color: var(--accent); text-transform: uppercase; margin: 6px 0 18px; }
.stone-hero__meta { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; margin: 0 0 18px; }
.stone-hero__meta li { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 6px 16px; font-size: .85rem; }
.stone-hero__meta span { color: var(--ink-sub); margin-right: 8px; font-size: .78rem; }
.stone-hero__summary { color: var(--ink); font-size: 1.05rem; max-width: 40em; }

.stone-body { display: grid; grid-template-columns: 1fr 300px; gap: 48px; padding: 56px 24px 24px; }
.stone-section { margin-bottom: 40px; }
.stone-section__title {
  font-family: var(--serif); font-size: 1.3rem; margin: 0 0 14px;
  display: flex; align-items: center; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line);
}
.stone-section__icon {
  width: 30px; height: 30px; flex: none; border-radius: 8px; background: var(--soft);
  color: var(--accent-deep); display: grid; place-items: center; font-size: .9rem;
}
.prose p { margin: 0 0 1.1em; color: var(--ink); }
.prose p:last-child { margin-bottom: 0; }
.prose--article h2 { font-family: var(--serif); font-size: 1.35rem; margin: 1.8em 0 .7em; }
.prose--article ul { padding-left: 1.3em; margin: 0 0 1.2em; }
.prose--article li { margin-bottom: .5em; }
.prose__links { margin-top: 2em; color: var(--ink-sub); }

.image-credit { font-size: .74rem; color: var(--ink-sub); margin: 8px 0 0; text-align: right; }
.image-credit a { color: var(--ink-sub); text-decoration: underline; }

/* ---- 管理画面で登録した送客商品 ---- */
.managed-products { margin: 24px auto 8px; }
.managed-products__head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.managed-products__title { font-family: var(--serif); font-size: 1.3rem; margin: 0; }
.managed-products__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.prod-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .18s, box-shadow .2s; }
.prod-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.prod-card__media { position: relative; aspect-ratio: 1; display: grid; place-items: center; background: var(--soft-2); }
.prod-card__media img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.prod-card__noimg { font-family: var(--serif); font-size: 2rem; color: var(--soft); }
.prod-card__label { position: absolute; left: 8px; top: 8px; z-index: 2; background: rgba(255,255,255,.92); color: var(--accent-deep); font-size: .68rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.prod-card__label--pr { background: var(--pr); color: #fff; }
.prod-card__body { padding: 14px 14px 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.prod-card__name { font-size: .95rem; font-weight: 700; margin: 0; line-height: 1.4; color: var(--ink); }
.prod-card__seller { font-size: .76rem; color: var(--ink-sub); margin: 0; }
.prod-card__price { font-size: 1rem; font-weight: 700; color: var(--pr); margin: 2px 0 8px; }
.prod-card__body .btn { margin-top: auto; }
.managed-products__note { font-size: .72rem; color: var(--ink-sub); line-height: 1.7; margin: 16px 0 0; }
@media (max-width: 720px) { .managed-products__grid { grid-template-columns: 1fr 1fr; gap: 12px; } }

/* ---- この石を使った人気の商品 ---- */
.product-links { margin: 24px auto 8px; background: var(--soft-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; }
.product-links__head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.product-links__title { font-family: var(--serif); font-size: 1.25rem; margin: 0; }
.product-links__lead { color: var(--ink-sub); font-size: .92rem; margin: 0 0 20px; }
.product-links__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.product-type { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 16px 18px; }
.product-type__name { font-family: var(--serif); font-size: 1rem; margin: 0 0 12px; color: var(--ink); }
.product-type__shops { display: flex; flex-direction: column; gap: 8px; }
.shop-btn {
  display: flex; align-items: center; justify-content: center; gap: .4em;
  font-size: .82rem; font-weight: 600; text-decoration: none; cursor: pointer;
  padding: 9px 12px; border-radius: 10px; border: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff, #f3efe7); color: var(--ink);
  box-shadow: 0 3px 0 #e2dacc, 0 5px 10px rgba(47,42,37,.08), inset 0 1px 0 rgba(255,255,255,.8);
  transition: transform .1s ease, box-shadow .18s ease, filter .18s ease;
  border-left-width: 4px;
}
.shop-btn:hover { transform: translateY(-1px); filter: brightness(1.02); box-shadow: 0 4px 0 #e2dacc, 0 8px 14px rgba(47,42,37,.12), inset 0 1px 0 rgba(255,255,255,.85); opacity: 1; }
.shop-btn:active { transform: translateY(2px); box-shadow: 0 1px 0 #e2dacc, 0 2px 6px rgba(47,42,37,.1); }
.shop-btn--leaninstore { border-left-color: var(--accent); color: var(--accent-deep); }
.shop-btn--amazon { border-left-color: #ff9900; }
.shop-btn--rakuten { border-left-color: #bf0000; }
.shop-btn--yahoo { border-left-color: #ff0033; }
.product-links__note { font-size: .72rem; color: var(--ink-sub); line-height: 1.7; margin: 18px 0 0; }
@media (max-width: 720px) { .product-links__grid { grid-template-columns: 1fr; } }

.stone-photos { margin: 16px auto 8px; }
.stone-photos__title { font-family: var(--serif); font-size: 1.2rem; margin: 0 0 18px; }
.stone-photos__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.stone-photo { margin: 0; }
.stone-photo__frame {
  position: relative; display: block; aspect-ratio: 4 / 3; border-radius: var(--radius); overflow: hidden;
  background: radial-gradient(120% 120% at 30% 20%, #fff, transparent 60%), var(--tint, var(--soft));
  box-shadow: var(--shadow);
}
.stone-photo__frame img { width: 100%; height: 100%; object-fit: cover; }
.stone-photo__tag {
  position: absolute; left: 10px; top: 10px; background: rgba(255,255,255,.92); color: var(--accent-deep);
  font-size: .72rem; font-weight: 700; padding: 4px 11px; border-radius: 999px;
}
.stone-photo figcaption { font-size: .72rem; color: var(--ink-sub); margin-top: 8px; line-height: 1.6; }
.stone-photo figcaption a { color: var(--ink-sub); text-decoration: underline; }
@media (max-width: 560px) {
  .stone-photos__grid { grid-template-columns: 1fr; }
}

.callout { border-radius: var(--radius); padding: 22px 24px; margin-top: 8px; }
.callout--skeptic { background: var(--soft-2); border: 1px dashed var(--accent); color: var(--ink-sub); font-size: .92rem; }
.callout p { margin: 0; }

/* ---- side cards ---- */
.stone-body__side { display: flex; flex-direction: column; gap: 18px; align-self: start; position: sticky; top: 90px; }
.side-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.side-card__title { font-family: var(--serif); font-size: 1.05rem; margin: 0 0 14px; }
.side-card p { font-size: .88rem; color: var(--ink-sub); margin: 0 0 16px; }
.side-card--cta { background: linear-gradient(160deg, var(--soft), var(--soft-2)); border-color: var(--soft); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.tag { display: inline-block; background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: .82rem; color: var(--ink); }
.tag:hover { border-color: var(--accent); color: var(--accent-deep); opacity: 1; }

/* ============================================================
   WISH LIST （願いから探す 一覧）
   ============================================================ */
.wish-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.wish-list__card {
  display: flex; flex-direction: column; gap: 10px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
  transition: transform .18s, box-shadow .2s, border-color .2s;
}
.wish-list__card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--accent); opacity: 1; }
.wish-list__head { display: flex; align-items: center; justify-content: space-between; }
.wish-list__name { font-family: var(--serif); font-size: 1.3rem; margin: 0; color: var(--ink); }
.wish-list__arrow { color: var(--accent); font-size: 1.1rem; }
.wish-list__desc { font-size: .86rem; color: var(--ink-sub); line-height: 1.7; margin: 0; }
.wish-list__stones { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin-top: auto; padding-top: 6px; }
.wish-list__stones li { font-size: .74rem; color: var(--accent-deep); background: var(--soft-2); border-radius: 999px; padding: 4px 11px; }
.wish-list__birth {
  display: flex; align-items: center; justify-content: center; gap: 18px; flex-wrap: wrap;
  margin-top: 40px; padding: 26px; background: var(--soft-2); border-radius: var(--radius); text-align: center;
}
.wish-list__birth p { margin: 0; color: var(--ink-sub); }

/* ============================================================
   BIRTHSTONES （誕生石 月別）
   ============================================================ */
.birth-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.birth-month {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px;
  display: flex; flex-direction: column; gap: 14px;
}
.birth-month__head { display: flex; align-items: baseline; gap: 8px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.birth-month__num { font-family: var(--serif); font-size: 1.9rem; font-weight: 700; color: var(--accent); line-height: 1; }
.birth-month__label { font-size: .85rem; color: var(--ink-sub); }
.birth-month__empty { font-size: .8rem; color: var(--ink-sub); margin: 0; }
.birth-month__stones { display: flex; flex-direction: column; gap: 10px; list-style: none; }
.birth-stone { display: flex; align-items: center; gap: 12px; }
.birth-stone__thumb {
  width: 48px; height: 48px; flex: none; border-radius: 12px; overflow: hidden; position: relative;
  display: grid; place-items: center;
  background: radial-gradient(120% 120% at 30% 20%, #fff, transparent 60%), var(--tint, var(--soft));
}
.birth-stone__thumb img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.birth-stone__gem { font-family: var(--serif); color: #fff; font-size: 1.1rem; text-shadow: 0 1px 2px rgba(47,42,37,.25); }
.birth-stone__name { font-family: var(--serif); font-weight: 700; font-size: .98rem; color: var(--ink); }
.birth-stone:hover .birth-stone__name { color: var(--accent-deep); }

/* ============================================================
   ARTICLES
   ============================================================ */
.type-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.type-filter__item {
  padding: 8px 18px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); font-size: .88rem;
}
.type-filter__item.is-active, .type-filter__item:hover {
  background: var(--accent); color: #fff; border-color: var(--accent); opacity: 1;
}

.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px 28px; }
.article-card { display: flex; flex-direction: column; background: transparent; }
.article-card:hover { opacity: 1; }
.article-card__thumb { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--soft-2); border-radius: var(--radius); }
.article-card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.article-card:hover .article-card__thumb img { transform: scale(1.06); }
.article-card__pattern {
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 80% at 80% 20%, rgba(126,143,106,.22), transparent 60%),
    radial-gradient(60% 80% at 10% 90%, rgba(91,124,153,.18), transparent 60%),
    var(--soft-2);
}
.article-card__badge {
  position: absolute; left: 12px; top: 12px; background: rgba(255,255,255,.92);
  color: var(--accent-deep); font-size: .72rem; font-weight: 700; padding: 4px 11px; border-radius: 999px;
}
.article-card__body { padding: 15px 2px 4px; display: flex; flex-direction: column; gap: 7px; }
.article-card__date { font-family: var(--display); font-size: .82rem; color: var(--accent-deep); letter-spacing: .14em; }
.article-card__title { font-family: var(--serif); font-weight: 500; font-size: 1.12rem; color: var(--ink); line-height: 1.55; letter-spacing: .03em; }
.article-card__excerpt { font-size: .82rem; color: var(--ink-sub); line-height: 1.7; }

.tag-pr { display: inline-block; background: var(--pr); color: #fff; font-size: .68rem; font-weight: 700;
  letter-spacing: .06em; padding: 2px 9px; border-radius: 6px; align-self: flex-start; }

.article-head { padding: 48px 0 8px; }
.article-head__meta { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; font-size: .8rem; color: var(--ink-sub); }
.article-head__type { background: var(--soft); color: var(--accent-deep); font-weight: 700; padding: 4px 12px; border-radius: 999px; }
.article-head__title { font-family: var(--serif); font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 0 0 16px; line-height: 1.45; }
.article-head__excerpt { color: var(--ink-sub); font-size: 1.05rem; }
.article-hero-img { width: 100%; border-radius: var(--radius); margin: 24px 0; aspect-ratio: 16/9; object-fit: cover; }
.article-body { font-size: 1.04rem; margin: 32px 0; }
.article-body h2 { padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.article-body h3 { font-family: var(--serif); font-size: 1.15rem; margin: 1.6em 0 .6em; }
.article-links { margin: 36px 0; padding-top: 24px; border-top: 1px solid var(--line); }
.article-links h2 { font-family: var(--serif); font-size: 1.1rem; margin: 0 0 14px; }
.article-cta {
  background: linear-gradient(160deg, var(--soft), var(--soft-2)); border: 1px solid var(--soft);
  border-radius: var(--radius); padding: 32px; text-align: center; margin: 40px 0;
}
.article-cta h2 { font-family: var(--serif); font-size: 1.3rem; margin: 0 0 8px; }
.article-cta p { color: var(--ink-sub); margin: 0 0 20px; }

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band { background: var(--charcoal); color: #f3efe7; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 80% at 80% 10%, rgba(126,143,106,.22), transparent 60%); pointer-events: none; }
.cta-band__title { font-family: var(--serif); font-weight: 500; font-size: clamp(1.55rem, 3.4vw, 2.3rem); margin: 0 0 14px; color: #fff; letter-spacing: .04em; line-height: 1.5; position: relative; }
.cta-band__lead { color: #d8d2c8; margin: 0 0 30px; position: relative; }
.cta-band .btn { position: relative; }
.cta-band .btn--accent { background: linear-gradient(180deg, #ffffff, #efeadf); color: var(--accent-deep); text-shadow: none;
  box-shadow: 0 4px 0 #c7bda9, 0 10px 22px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.9); }
.cta-band .btn--accent:hover { color: var(--accent-deep); transform: translateY(-1px); box-shadow: 0 5px 0 #c7bda9, 0 13px 26px rgba(0,0,0,.26), inset 0 1px 0 rgba(255,255,255,.9); }
.cta-band .btn--accent:active { transform: translateY(3px); box-shadow: 0 1px 0 #c7bda9, 0 3px 8px rgba(0,0,0,.2); }

/* ============================================================
   AD UNIT（通常広告枠）
   ============================================================ */
.ad-unit { margin: 28px 0; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); padding: 10px 12px 12px; overflow: hidden; }
.ad-unit__label { display: block; font-size: .66rem; letter-spacing: .12em; color: var(--ink-sub); margin-bottom: 6px; }
.ad-unit__body { min-height: 1px; }
.ad-unit__body img, .ad-unit__body iframe { max-width: 100%; }
.ad-unit--sidebar { margin: 0; }

/* ============================================================
   AD DISCLOSURE
   ============================================================ */
.ad-disclosure { display: flex; gap: 14px; align-items: flex-start; background: var(--soft-2);
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; margin: 40px 0; }
.ad-disclosure__label { flex: none; background: var(--pr); color: #fff; font-size: .68rem; font-weight: 700;
  letter-spacing: .08em; padding: 4px 10px; border-radius: 6px; margin-top: 2px; }
.ad-disclosure p { margin: 0; font-size: .8rem; color: var(--ink-sub); line-height: 1.7; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: #2C2823; color: #d8d2c8; margin-top: 40px; }
.site-footer__inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; padding: 56px 24px 40px; }
.site-footer__brand .brand__name { font-family: var(--serif); color: #fff; font-size: 1.2rem; display: block; margin-bottom: 12px; }
.site-footer__tagline { color: #cfc8bc; margin: 0 0 14px; }
.site-footer__note { font-size: .82rem; color: #a39c90; line-height: 1.8; max-width: 36em; }
.site-footer__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.site-footer__nav h3 { font-size: .78rem; letter-spacing: .14em; color: #8d8579; margin: 0 0 14px; text-transform: uppercase; }
.site-footer__nav a { display: block; color: #d8d2c8; font-size: .9rem; margin-bottom: 10px; }
.site-footer__nav a:hover { color: #fff; }
.site-footer__bottom { border-top: 1px solid #423c34; }
.site-footer__bottom .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 18px; padding-bottom: 18px; }
.disclosure-mini { font-size: .76rem; color: #a39c90; margin: 0; }
.copyright { font-size: .76rem; color: #8d8579; margin: 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 920px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .stone-hero__inner { grid-template-columns: 1fr; text-align: center; }
  .stone-hero__visual { width: 200px; margin: 0 auto; }
  .stone-hero__meta { justify-content: center; }
  .stone-body { grid-template-columns: 1fr; }
  .stone-body__side { position: static; }
  .wish-grid { grid-template-columns: repeat(2, 1fr); }
  .stone-grid { grid-template-columns: repeat(3, 1fr); }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .wish-list { grid-template-columns: repeat(2, 1fr); }
  .birth-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; z-index: 120; }
  .site-nav {
    position: fixed; inset: 70px 0 auto 0; background: var(--bg);
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 24px 24px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .25s;
  }
  .site-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .site-nav a.btn { margin-top: 12px; border-bottom: 0; }
  .stone-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .article-grid { grid-template-columns: 1fr; }
  .wish-list { grid-template-columns: 1fr; }
  .birth-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .section { padding: 52px 0; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 440px) {
  .stone-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .wish-grid { grid-template-columns: 1fr; }
  .birth-grid { grid-template-columns: 1fr; }
  .hero__cta .btn { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}