:root {
  --bg: #f7f5ee;
  --surface: #ffffff;
  --ink: #26281f;
  --muted: #71705f;
  --line: #e2dfd1;
  --accent: #4f6b3a;
  --accent-ink: #ffffff;
  --green: #2f3d28;
  --soft: #eeebdf;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Zen Kaku Gothic New", "Hiragino Sans", sans-serif;
  line-height: 1.75; letter-spacing: .02em;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.4; margin: 0 0 .5em; }
h1, h2 { font-family: "Shippori Mincho", serif; font-weight: 600; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

.demo-bar { background: var(--ink); color: #f6efe3; font-size: .78rem; text-align: center; padding: 6px 16px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(250,247,241,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-family: "Shippori Mincho", serif; font-size: 1.05rem; }
.logo-text { font-family: "Shippori Mincho", serif; font-size: 1.15rem; font-weight: 600; }
.nav { display: flex; align-items: center; gap: 22px; font-size: .9rem; }
.nav a:hover { color: var(--accent); }
.cart-link { position: relative; display: flex; }
.cart-count { position: absolute; top: -6px; right: -10px; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: var(--accent); color: #fff; font-size: .7rem; display: none; place-items: center; line-height: 18px; text-align: center; }
.cart-count.show { display: block; }

/* buttons */
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 999px; padding: 13px 28px; font: inherit; font-weight: 700; cursor: pointer; transition: transform .15s, opacity .15s; margin: 4px 6px 4px 0; }
.btn:hover { opacity: .9; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
.btn-wide { display: block; width: 100%; text-align: center; margin: 12px 0 0; }
.link { color: var(--accent); font-weight: 500; }
.link.center { display: block; text-align: center; margin-top: 14px; font-size: .9rem; }

/* product art (写真の代わり) */
.art { position: relative; aspect-ratio: 1; background: var(--bg); overflow: hidden; border-radius: var(--radius); }
.art svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.art-char { position: absolute; inset: 0; display: grid; place-items: center; font-family: "Shippori Mincho", serif; font-size: 4.2rem; color: var(--ink); opacity: .85; }
.art-big .art-char { font-size: 7rem; }
.art-note { position: absolute; left: 12px; bottom: 10px; font-size: .62rem; letter-spacing: .2em; color: var(--ink); opacity: .45; }

/* hero */
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; padding: 56px 0 40px; }
.eyebrow { color: var(--accent); font-size: .78rem; letter-spacing: .18em; font-weight: 700; margin: 0 0 8px; }
.hero h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); }
.lead { color: var(--muted); font-size: 1.02rem; }
.hero-art .art { border-radius: 24px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.features div { padding: 18px 22px; display: flex; flex-direction: column; }
.features div + div { border-left: 1px solid var(--line); }
.features strong { font-size: .95rem; }
.features span { color: var(--muted); font-size: .82rem; }

/* list */
.section { padding: 56px 0 8px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.section-head h2, .section > h2 { font-size: 1.6rem; margin: 0; }
.section > h2 { margin-bottom: 20px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chips[hidden] { display: none; }
.chip { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); font-size: .85rem; background: var(--surface); }
.chip.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card { position: relative; display: block; transition: transform .2s; }
.card:hover { transform: translateY(-3px); }
.card:hover .art { box-shadow: 0 10px 24px rgba(60,40,10,.12); }
.card-body { padding: 12px 2px 0; }
.card h3 { font-size: .98rem; font-weight: 700; margin: 0 0 2px; }
.card .small { margin: 0; }
.price { font-weight: 700; font-size: 1.05rem; margin: 6px 0 0; }
.price.big { font-size: 1.9rem; margin: 10px 0 0; }
.tax { font-size: .72rem; color: var(--muted); font-weight: 400; margin-left: 4px; }
.badge { position: absolute; top: 10px; left: 10px; background: var(--surface); color: var(--accent); font-size: .72rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.badge.static { position: static; display: inline-block; background: var(--soft); }

.story { margin: 72px 0 24px; padding: 56px 48px; border-radius: 24px; background: var(--green); color: #f3f1e8; }
.story > div { max-width: 560px; }
.story .eyebrow { color: #d9e3b8; }
.story h2 { font-size: 1.8rem; }
.story .link { color: #fff; }

/* product detail */
.crumbs { font-size: .8rem; color: var(--muted); padding: 22px 0 0; }
.crumbs a:hover { color: var(--accent); }
.pdp { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding: 20px 0; }
.thumbs { display: flex; gap: 10px; margin-top: 12px; }
.thumb { width: 72px; aspect-ratio: 1; border-radius: 10px; opacity: .6; }
.thumb.on { opacity: 1; outline: 2px solid var(--ink); outline-offset: 2px; }
.pdp-info h1 { font-size: 1.9rem; margin-top: 8px; }
.buy { display: flex; gap: 12px; align-items: stretch; margin: 22px 0; }
.buy .btn-wide { margin: 0; flex: 1; }
.qty { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); overflow: hidden; }
.qty button { width: 42px; height: 48px; border: 0; background: none; font-size: 1.1rem; cursor: pointer; color: var(--ink); }
.qty input { width: 40px; border: 0; text-align: center; font: inherit; background: none; -moz-appearance: textfield; }
.qty input::-webkit-inner-spin-button { -webkit-appearance: none; }
.qty.sm button { width: 32px; height: 34px; }
.qty.sm span { min-width: 22px; text-align: center; }
.desc { margin: 20px 0; }
.specs { width: 100%; border-collapse: collapse; font-size: .9rem; }
.specs th, .specs td { text-align: left; padding: 10px 4px; border-top: 1px solid var(--line); }
.specs th { width: 32%; color: var(--muted); font-weight: 500; }

/* cart & checkout */
.page-title { font-size: 1.8rem; padding: 32px 0 8px; }
.cart { display: grid; grid-template-columns: 1fr 340px; gap: 32px; align-items: start; padding-bottom: 40px; }
.cart-items { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.cart-row { display: grid; grid-template-columns: 72px 1fr auto auto 28px; gap: 16px; align-items: center; padding: 16px; }
.cart-row + .cart-row { border-top: 1px solid var(--line); }
.cart-thumb .art { border-radius: 10px; }
.cart-thumb .art-char { font-size: 1.6rem; }
.cart-thumb .art-note { display: none; }
.cart-name { display: flex; flex-direction: column; font-weight: 500; }
.cart-line { font-weight: 700; min-width: 72px; text-align: right; }
.remove { border: 0; background: none; color: var(--muted); font-size: 1.2rem; cursor: pointer; }
.summary { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; position: sticky; top: 84px; }
.summary h2 { font-size: 1.15rem; }
.summary dl { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin: 16px 0 0; }
.summary dd { margin: 0; text-align: right; }
.summary .total { font-weight: 700; font-size: 1.15rem; border-top: 1px solid var(--line); padding-top: 10px; }
.notice { margin: 0 0 8px; font-size: .88rem; }
.notice strong { color: var(--accent); }
.notice.ok { color: var(--green); font-weight: 700; }
.meter { height: 6px; background: var(--soft); border-radius: 3px; overflow: hidden; }
.meter span { display: block; height: 100%; background: var(--accent); }
.mini { display: flex; justify-content: space-between; gap: 12px; font-size: .88rem; padding: 6px 0; }

.steps { display: flex; gap: 8px; list-style: none; padding: 32px 0 20px; margin: 0; font-size: .82rem; color: var(--muted); counter-reset: s; }
.steps li { counter-increment: s; display: flex; align-items: center; gap: 6px; }
.steps li::before { content: counter(s); width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--line); display: grid; place-items: center; font-size: .72rem; background: var(--surface); }
.steps li + li::after { content: none; }
.steps li:not(:last-child)::after { content: "—"; margin-left: 4px; color: var(--line); }
.steps .on { color: var(--ink); font-weight: 700; }
.steps .on::before { background: var(--accent); color: #fff; border-color: var(--accent); }
.steps .done::before { background: var(--ink); color: #fff; border-color: var(--ink); }
.empty .steps { justify-content: center; }

.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.form h2 { font-size: 1.15rem; margin-top: 8px; }
.form h2 + label, .form h2 + .pay { margin-top: 0; }
.form label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 14px; }
.form input:not([type=radio]) { display: block; width: 100%; margin-top: 4px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font: inherit; font-size: 16px; color: var(--ink); background: var(--bg); }
.form input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pay { display: grid; gap: 8px; margin-bottom: 14px; }
.radio { display: flex !important; align-items: center; gap: 10px; color: var(--ink) !important; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 0 !important; cursor: pointer; }
.radio:has(input:checked) { border-color: var(--accent); background: #f0f4ea; }
.radio input { accent-color: var(--accent); }

.empty, .prose { text-align: center; padding: 72px 0; }
.prose { text-align: left; max-width: 680px; margin: 0 auto; }
.prose h2 { font-size: 1.2rem; margin-top: 28px; }

/* footer */
.site-footer { margin-top: 64px; border-top: 1px solid var(--line); background: var(--soft); padding: 40px 0 20px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { list-style: none; padding: 0; margin: 0; font-size: .88rem; display: grid; gap: 6px; }
.copy { font-size: .75rem; color: var(--muted); margin-top: 24px; }

.toast { position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); background: var(--ink); color: #fff; padding: 12px 22px; border-radius: 999px; font-size: .9rem; opacity: 0; pointer-events: none; transition: .25s; z-index: 50; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* responsive */
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .cart { grid-template-columns: 1fr; }
  .summary { position: static; }
}
@media (max-width: 680px) {
  .wrap { padding: 0 16px; }
  .nav { gap: 14px; font-size: .82rem; }
  .nav a:nth-child(2) { display: none; }
  .hero { grid-template-columns: 1fr; gap: 24px; padding: 32px 0 24px; }
  .hero-art { order: -1; }
  .features { grid-template-columns: 1fr; }
  .features div + div { border-left: 0; border-top: 1px solid var(--line); }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .art-char { font-size: 3rem; }
  .pdp { grid-template-columns: 1fr; gap: 20px; }
  .buy { flex-direction: column; }
  .qty { align-self: flex-start; }
  .story { padding: 36px 24px; }
  .cart-row { grid-template-columns: 56px 1fr auto; }
  .cart-row .qty { grid-column: 2; justify-self: start; }
  .cart-line { grid-column: 3; grid-row: 2; }
  .remove { grid-column: 3; grid-row: 1; justify-self: end; }
  .row { grid-template-columns: 1fr; }
  .steps { flex-wrap: wrap; }
}