/* アイエムインテリア — magazine / showroom aesthetic */

*, *::before, *::after { box-sizing: border-box; }

:root {
  /* Palette: Beige (default). Swapped at runtime by Tweaks. */
  --bg: #f6f2ea;
  --paper: #faf7f1;
  --ink: #1f1b14;
  --ink-soft: #4a4338;
  --ink-mute: #8a8378;
  --line: #d9d1c2;
  --line-soft: #e6dfd1;
  --accent: #b18c5a;
  --accent-deep: #6b4e2e;
  --tag-bg: #efe8d8;

  --max: 1320px;
  --gutter: clamp(20px, 4vw, 56px);

  --f-disp: "Cormorant Garamond", "Shippori Mincho B1", "Noto Serif JP", serif;
  --f-jp:   "Shippori Mincho B1", "Noto Serif JP", serif;
  --f-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; }

button { font-family: inherit; cursor: pointer; }

.app { min-height: 100vh; }

/* ───────── Header / Nav ───────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}
.brand {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--f-disp);
}
.brand-mark {
  font-size: 22px; font-weight: 500; letter-spacing: .14em;
  color: var(--ink);
}
.brand-jp {
  font-family: var(--f-jp);
  font-size: 11px; letter-spacing: .35em; color: var(--ink-mute);
}
.nav-links {
  display: flex; gap: 28px; justify-self: center;
  font-size: 12px; letter-spacing: .12em;
}
.nav-links a {
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color .2s, border-color .2s;
}
.nav-links a:hover { color: var(--ink); border-bottom-color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 16px; }
.lang-toggle {
  display: inline-flex; align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
  font-size: 11px;
  background: var(--paper);
}
.lang-toggle button {
  appearance: none; border: 0; background: transparent;
  padding: 4px 10px; border-radius: 999px;
  color: var(--ink-mute); letter-spacing: .12em;
  font-family: var(--f-body); font-weight: 500;
}
.lang-toggle button.on {
  background: var(--ink); color: var(--paper);
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--ink); color: var(--ink);
  background: transparent;
  padding: 9px 18px; border-radius: 999px;
  font-size: 12px; letter-spacing: .14em;
  transition: background .2s, color .2s;
}
.nav-cta:hover { background: var(--ink); color: var(--paper); }
.nav-burger { display: none; }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-inner { grid-template-columns: auto 1fr auto; gap: 12px; }
  .nav-cta { display: none; }
}

/* ───────── Hero ───────── */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(40px, 8vw, 96px) var(--gutter) clamp(60px, 9vw, 120px);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: end;
}
.hero-eyebrow {
  font-family: var(--f-disp);
  font-size: 13px; letter-spacing: .35em;
  color: var(--accent-deep);
  margin-bottom: 28px;
  display: flex; align-items: center; gap: 14px;
}
.hero-eyebrow::before {
  content: ""; width: 36px; height: 1px; background: var(--accent);
}
.hero-h1 {
  font-family: var(--f-jp);
  font-weight: 500;
  font-size: clamp(34px, 5.4vw, 72px);
  line-height: 1.25;
  letter-spacing: .02em;
  margin: 0 0 28px;
  color: var(--ink);
}
.hero-h1 em {
  font-style: normal;
  font-family: var(--f-disp);
  letter-spacing: .04em;
  font-weight: 500;
  color: var(--accent-deep);
}
.hero-lead {
  font-size: 15px; line-height: 1.95;
  color: var(--ink-soft);
  max-width: 36em;
  text-wrap: pretty;
}
.hero-meta {
  margin-top: 36px;
  display: flex; flex-wrap: wrap; gap: 28px;
  font-size: 11px; letter-spacing: .14em; color: var(--ink-mute);
  text-transform: uppercase;
}
.hero-meta b {
  display: block;
  font-family: var(--f-disp);
  font-size: 22px; font-weight: 500;
  letter-spacing: .04em; color: var(--ink);
  margin-bottom: 4px;
  text-transform: none;
}
.hero-img {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--line-soft);
}
.hero-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.2s ease;
}
.hero-img:hover img { transform: scale(1.03); }
.hero-img .ticker {
  position: absolute; left: 16px; bottom: 16px;
  display: flex; align-items: center; gap: 10px;
  background: var(--paper);
  padding: 8px 14px;
  font-family: var(--f-disp);
  font-size: 12px; letter-spacing: .2em;
  color: var(--ink);
}
.hero-img .ticker::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: #c4452f; box-shadow: 0 0 0 4px color-mix(in srgb, #c4452f 22%, transparent);
}
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; }
  .hero-img { aspect-ratio: 4/5; max-height: 80vh; }
}

/* ───────── Section scaffolding ───────── */
section { scroll-margin-top: 80px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.section-pad { padding: clamp(60px, 9vw, 120px) 0; }

.sec-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: end;
  margin-bottom: clamp(36px, 5vw, 64px);
}
.sec-num {
  font-family: var(--f-disp);
  font-size: 13px; letter-spacing: .3em;
  color: var(--accent-deep);
}
.sec-title {
  font-family: var(--f-jp);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 500;
  line-height: 1.3;
  margin: 14px 0 0;
}
.sec-en {
  font-family: var(--f-disp);
  font-size: clamp(38px, 5vw, 56px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--ink);
  margin: 0;
}
.sec-en small {
  display: block; font-family: var(--f-body);
  font-size: 11px; letter-spacing: .3em;
  color: var(--ink-mute); margin-top: 18px;
  text-transform: uppercase;
}
.sec-desc {
  color: var(--ink-soft);
  font-size: 15px; line-height: 1.9;
  max-width: 38em;
  margin-top: 14px;
  text-wrap: pretty;
}
@media (max-width: 720px) {
  .sec-head { grid-template-columns: 1fr; }
}

/* ───────── About / Strengths ───────── */
.about {
  background: var(--paper);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.strengths {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.strength {
  background: var(--paper);
  padding: clamp(28px, 3.5vw, 44px);
  display: flex; flex-direction: column; gap: 14px;
  min-height: 280px;
}
.strength-num {
  font-family: var(--f-disp);
  font-size: 13px; letter-spacing: .28em;
  color: var(--accent-deep);
}
.strength-h {
  font-family: var(--f-jp);
  font-size: clamp(20px, 1.8vw, 24px);
  font-weight: 500;
  line-height: 1.4;
  margin: 0;
}
.strength-p {
  font-size: 13.5px; line-height: 1.85;
  color: var(--ink-soft);
  margin: auto 0 0;
  text-wrap: pretty;
}
@media (max-width: 880px) {
  .strengths { grid-template-columns: 1fr; }
  .strength { min-height: 0; }
}

/* ───────── Catalog gallery ───────── */
.cat-filters {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 36px;
}
.cat-filter {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 12px;
  font-family: var(--f-body);
  letter-spacing: .08em;
  transition: all .2s;
}
.cat-filter:hover { color: var(--ink); border-color: var(--ink-soft); }
.cat-filter.on {
  background: var(--ink); color: var(--paper); border-color: var(--ink);
}
.cat-filter .count {
  font-family: var(--f-disp);
  font-size: 10px; opacity: .55;
  margin-left: 6px;
}

/* Layout 1: equal grid */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.4vw, 36px) clamp(18px, 2vw, 28px);
}
/* Layout 2: editorial / asymmetric */
.cat-grid.editorial {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(20px, 2.4vw, 32px) clamp(16px, 2vw, 24px);
}
.cat-grid.editorial .cat-card { grid-column: span 4; }
.cat-grid.editorial .cat-card:nth-child(7n+1) { grid-column: span 6; }
.cat-grid.editorial .cat-card:nth-child(7n+2) { grid-column: span 6; }
.cat-grid.editorial .cat-card:nth-child(7n+1) .cat-photo,
.cat-grid.editorial .cat-card:nth-child(7n+2) .cat-photo { aspect-ratio: 5/4; }

@media (max-width: 880px) {
  .cat-grid, .cat-grid.editorial { grid-template-columns: 1fr 1fr; }
  .cat-grid.editorial .cat-card,
  .cat-grid.editorial .cat-card:nth-child(7n+1),
  .cat-grid.editorial .cat-card:nth-child(7n+2) { grid-column: span 1; }
  .cat-grid.editorial .cat-card .cat-photo { aspect-ratio: 4/5; }
}
@media (max-width: 540px) {
  .cat-grid, .cat-grid.editorial { grid-template-columns: 1fr; }
}

.cat-card {
  display: flex; flex-direction: column; gap: 14px;
  cursor: zoom-in;
}
.cat-photo {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  background: var(--line-soft);
}
.cat-photo img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .9s ease;
}
.cat-card:hover .cat-photo img { transform: scale(1.04); }
.cat-photo .new {
  position: absolute; left: 12px; top: 12px;
  background: var(--ink); color: var(--paper);
  font-family: var(--f-disp);
  font-size: 10px; letter-spacing: .25em;
  padding: 4px 10px;
}
.cat-num {
  font-family: var(--f-disp);
  font-size: 11px; letter-spacing: .22em;
  color: var(--ink-mute);
  display: flex; justify-content: space-between;
}
.cat-name {
  font-family: var(--f-jp);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.45;
  margin: 0;
  color: var(--ink);
}
.cat-name em {
  font-style: normal;
  font-family: var(--f-disp);
  letter-spacing: .04em;
  margin-right: 6px;
  color: var(--ink-soft);
}
.cat-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 2px;
}
.cat-tag {
  font-size: 10.5px; letter-spacing: .1em;
  color: var(--ink-mute);
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* ───────── Lightbox ───────── */
.lb {
  position: fixed; inset: 0;
  background: rgba(20, 16, 10, .82);
  display: grid; place-items: center;
  z-index: 100;
  padding: 4vw;
  backdrop-filter: blur(6px);
}
.lb-card {
  background: var(--paper);
  max-width: 1100px; width: 100%;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 0;
  max-height: 90vh;
  overflow: hidden;
}
.lb-img { background: var(--bg); }
.lb-img img { width: 100%; height: 100%; object-fit: cover; max-height: 90vh; }
.lb-body {
  padding: clamp(24px, 3vw, 44px);
  display: flex; flex-direction: column; gap: 18px;
  overflow-y: auto;
}
.lb-num { font-family: var(--f-disp); font-size: 12px; letter-spacing: .25em; color: var(--ink-mute); }
.lb-h { font-family: var(--f-jp); font-size: 28px; font-weight: 500; line-height: 1.35; margin: 0; }
.lb-meta { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; font-size: 13px; }
.lb-meta dt { color: var(--ink-mute); font-size: 11px; letter-spacing: .15em; text-transform: uppercase; padding-top: 4px; }
.lb-meta dd { margin: 0; color: var(--ink-soft); }
.lb-close {
  position: absolute; top: 18px; right: 18px;
  appearance: none; border: 0; background: var(--paper);
  width: 38px; height: 38px; border-radius: 50%;
  font-size: 16px;
  display: grid; place-items: center;
}
@media (max-width: 720px) {
  .lb-card { grid-template-columns: 1fr; max-height: none; }
  .lb-img img { max-height: 50vh; }
}

/* ───────── Flow (取引の流れ) ───────── */
.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.flow-step {
  background: var(--paper);
  padding: clamp(24px, 2.6vw, 36px);
  position: relative;
}
.flow-step .step-num {
  font-family: var(--f-disp);
  font-size: 56px; font-weight: 400;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 14px;
}
.flow-step h4 {
  font-family: var(--f-jp);
  font-size: 17px; font-weight: 500;
  margin: 0 0 10px;
}
.flow-step p {
  font-size: 13px; line-height: 1.85; color: var(--ink-soft); margin: 0;
}
@media (max-width: 880px) { .flow { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .flow { grid-template-columns: 1fr; } }

/* ───────── News ───────── */
.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}
.news-item {
  display: grid;
  grid-template-columns: 110px 110px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line-soft);
  cursor: default;
  transition: background .2s;
}
.news-item:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); }
.news-date { font-family: var(--f-disp); font-size: 14px; letter-spacing: .1em; color: var(--ink-soft); }
.news-tag {
  font-size: 10.5px; letter-spacing: .14em; color: var(--ink);
  background: var(--tag-bg);
  padding: 4px 12px;
  justify-self: start;
  text-transform: uppercase;
}
.news-title { font-family: var(--f-jp); font-size: 15px; font-weight: 500; }
.news-arrow { color: var(--ink-mute); font-family: var(--f-disp); }
@media (max-width: 720px) {
  .news-item { grid-template-columns: auto 1fr; }
  .news-tag { grid-column: 2; justify-self: start; }
  .news-title { grid-column: 1 / -1; }
  .news-arrow { display: none; }
}

/* ───────── FAQ ───────── */
.faq-list { border-top: 1px solid var(--line-soft); }
.faq {
  border-bottom: 1px solid var(--line-soft);
  padding: 6px 0;
}
.faq-q {
  width: 100%; appearance: none; background: transparent; border: 0;
  display: grid;
  grid-template-columns: 32px 1fr 32px;
  gap: 18px;
  align-items: center;
  padding: 22px 4px;
  text-align: left;
  font-family: var(--f-body);
  color: var(--ink);
}
.faq-q .q-mark { font-family: var(--f-disp); font-size: 22px; color: var(--accent-deep); }
.faq-q .q-text { font-size: 15px; font-weight: 500; line-height: 1.5; }
.faq-q .q-plus {
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border: 1px solid var(--ink-soft);
  border-radius: 50%;
  position: relative;
  transition: transform .3s;
}
.faq-q .q-plus::before, .faq-q .q-plus::after {
  content: ""; position: absolute; background: var(--ink);
}
.faq-q .q-plus::before { width: 10px; height: 1px; }
.faq-q .q-plus::after { width: 1px; height: 10px; transition: transform .3s; }
.faq.open .q-plus::after { transform: scaleY(0); }
.faq-a {
  display: grid; grid-template-columns: 32px 1fr 32px; gap: 18px;
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq.open .faq-a { max-height: 500px; padding: 0 4px 22px; }
.faq-a .a-mark { font-family: var(--f-disp); font-size: 22px; color: var(--accent); }
.faq-a .a-text { font-size: 14px; line-height: 1.9; color: var(--ink-soft); text-wrap: pretty; }

/* ───────── Contact ───────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info {
  display: flex; flex-direction: column; gap: 28px;
}
.contact-block .label {
  font-family: var(--f-disp);
  font-size: 12px; letter-spacing: .26em;
  color: var(--ink-mute);
  margin-bottom: 8px;
}
.contact-block .val {
  font-family: var(--f-disp);
  font-size: 28px; letter-spacing: .04em;
  color: var(--ink);
  word-break: break-all;
}
.contact-block .val.jp {
  font-family: var(--f-jp);
  font-size: 18px;
  line-height: 1.65;
}
.contact-block .sub {
  font-size: 12px; color: var(--ink-mute);
  margin-top: 6px;
}

form.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 16px;
}
form.contact-form .field { display: flex; flex-direction: column; gap: 6px; }
form.contact-form .field.wide { grid-column: 1 / -1; }
form.contact-form label {
  font-size: 11px; letter-spacing: .14em; color: var(--ink-mute);
  text-transform: uppercase;
  display: flex; gap: 6px; align-items: baseline;
}
form.contact-form label .req {
  color: #c4452f; font-size: 9px;
}
form.contact-form input,
form.contact-form select,
form.contact-form textarea {
  width: 100%; appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
  font-family: inherit; font-size: 14px;
  color: var(--ink);
  outline: none;
  transition: border-color .2s;
}
form.contact-form input:focus,
form.contact-form select:focus,
form.contact-form textarea:focus { border-bottom-color: var(--ink); }
form.contact-form textarea { resize: vertical; min-height: 140px; }
form.contact-form .submit {
  grid-column: 1 / -1;
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 16px;
}
form.contact-form .submit small { font-size: 11px; color: var(--ink-mute); }
form.contact-form button[type="submit"] {
  appearance: none; border: 0;
  background: var(--ink); color: var(--paper);
  padding: 14px 40px;
  border-radius: 999px;
  font-size: 12px; letter-spacing: .22em;
  display: inline-flex; align-items: center; gap: 10px;
  transition: background .2s;
}
form.contact-form button[type="submit"]:hover { background: var(--accent-deep); }
form.contact-form .submitted {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 20px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
}
form.contact-form .submitted .ok {
  font-family: var(--f-disp);
  font-size: 18px; letter-spacing: .2em;
  color: var(--accent-deep);
}
@media (max-width: 540px) {
  form.contact-form { grid-template-columns: 1fr; }
}

/* ───────── Footer ───────── */
.foot {
  background: var(--ink);
  color: color-mix(in srgb, var(--paper) 90%, transparent);
  padding: clamp(56px, 8vw, 100px) 0 30px;
}
.foot a:hover { color: var(--paper); }
.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
@media (max-width: 720px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot-brand .b-mark {
  font-family: var(--f-disp);
  font-size: 24px; letter-spacing: .14em;
}
.foot-brand p {
  font-size: 13px; line-height: 1.85;
  color: color-mix(in srgb, var(--paper) 60%, transparent);
  margin: 18px 0 0; max-width: 28em;
}
.foot h5 {
  font-family: var(--f-disp);
  font-size: 11px; letter-spacing: .26em;
  margin: 0 0 18px;
  color: color-mix(in srgb, var(--paper) 80%, transparent);
}
.foot ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 13px; }
.foot ul a { color: color-mix(in srgb, var(--paper) 75%, transparent); }
.foot-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px;
  font-family: var(--f-disp);
  font-size: 11px; letter-spacing: .2em;
  color: color-mix(in srgb, var(--paper) 50%, transparent);
}
@media (max-width: 540px) { .foot-bottom { flex-direction: column; gap: 10px; align-items: flex-start; } }

/* ───────── Marquee (manufacturer names) ───────── */
.marquee {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
  padding: 22px 0;
  background: var(--paper);
}
.marquee-track {
  display: flex; gap: 64px;
  animation: scroll 50s linear infinite;
  font-family: var(--f-disp);
  font-size: 22px; letter-spacing: .12em;
  color: var(--ink-soft);
  white-space: nowrap;
  width: max-content;
}
.marquee-track span {
  display: inline-flex; align-items: center; gap: 64px;
}
.marquee-track span::after {
  content: "✦"; color: var(--accent); font-size: 14px;
}
@keyframes scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ───────── Misc ───────── */
.divider-en {
  text-align: center;
  font-family: var(--f-disp);
  font-size: 11px; letter-spacing: .4em;
  color: var(--ink-mute);
  padding: 14px 0;
  text-transform: uppercase;
}