/* ============================================
   唐川管樂器 — 和風 Wagaku Stylesheet
   Palette: 生成 washi / 墨 sumi / 緋 hi / 金茶 kincha / 萌黃 moegi
   ============================================ */

:root {
  --kinari: #f5efe2;
  --washi: #faf6ec;
  --washi-deep: #ede4cf;
  --sumi: #1a1612;
  --sumi-soft: #2c2620;
  --hai: #7a716a;
  --hai-light: #b8ada0;
  --hi: #a3262c;
  --hi-deep: #7a1a1f;
  --kincha: #b0853a;
  --kincha-soft: #d4af6a;
  --moegi: #4a5d3f;
  --hairline: rgba(26, 22, 18, 0.14);
  --hairline-strong: rgba(26, 22, 18, 0.28);
  --shadow: 0 1px 0 rgba(26, 22, 18, 0.04), 0 12px 32px -16px rgba(26, 22, 18, 0.18);

  --font-serif: "Noto Serif JP", "Shippori Mincho", "Noto Serif TC", "Songti TC", "PingFang TC", serif;
  --font-sans: "Noto Sans JP", "Noto Sans TC", "PingFang TC", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;

  --max: 1240px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--washi);
  color: var(--sumi);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* subtle washi paper texture */
body {
  background-color: var(--washi);
  background-image:
    radial-gradient(rgba(176, 133, 58, 0.04) 1px, transparent 1px),
    radial-gradient(rgba(26, 22, 18, 0.025) 1px, transparent 1px);
  background-size: 18px 18px, 32px 32px;
  background-position: 0 0, 9px 9px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease, opacity .2s ease; }
a:hover { color: var(--hi); }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ===== Top bar ===== */
.topbar {
  background: var(--sumi);
  color: var(--kinari);
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.18em;
}
.topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 8px var(--gutter);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.topbar a { opacity: 0.8; }
.topbar a:hover { opacity: 1; color: var(--kincha-soft); }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 246, 236, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hairline);
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
}
.brand-mark {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--sumi);
}
.brand-mark .accent {
  color: var(--hi);
}
.brand-sub {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  color: var(--hai);
  text-transform: uppercase;
}

.nav-main {
  display: flex;
  justify-content: center;
  gap: 2.25rem;
}
.nav-main > a,
.nav-main .nav-item > a {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  position: relative;
  padding: 6px 0;
  color: var(--sumi-soft);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.nav-main > a::after,
.nav-main .nav-item > a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--hi);
  transition: width .3s ease, left .3s ease;
}
.nav-main a:hover,
.nav-main a.active { color: var(--hi); }
.nav-main > a:hover::after,
.nav-main .nav-item > a:hover::after,
.nav-main > a.active::after,
.nav-main .nav-item > a.active::after { width: 100%; left: 0; }

/* ===== 下拉選單 ===== */
.nav-main .nav-item {
  position: relative;
}
.nav-main .nav-item .chev {
  font-size: 0.6rem;
  color: var(--hai);
  transition: transform .25s ease;
  margin-left: 4px;
}
.nav-main .nav-item:hover .chev { transform: rotate(180deg); color: var(--hi); }
.nav-main .dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 240px;
  background: var(--washi);
  border: 1px solid var(--hairline);
  box-shadow: 0 20px 40px -10px rgba(26,22,18,0.18);
  padding: 0.7rem 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
  z-index: 100;
}
.nav-main .nav-item:hover .dropdown,
.nav-main .nav-item:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-main .dropdown::before {
  /* 上方三角箭頭 */
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background: var(--washi);
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}
.nav-main .dropdown a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1.2rem;
  font-family: var(--font-serif);
  font-size: 0.88rem;
  color: var(--sumi-soft);
  letter-spacing: 0.08em;
  transition: background .18s ease, color .18s ease, padding-left .18s ease;
  border-left: 3px solid transparent;
}
.nav-main .dropdown a::after { display: none; }
.nav-main .dropdown a:hover {
  background: var(--kinari);
  color: var(--hi);
  border-left-color: var(--hi);
  padding-left: 1.4rem;
}
.nav-main .dropdown a .glyph {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--kincha);
  width: 18px;
  text-align: center;
}
.nav-main .dropdown a .desc {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--hai);
  letter-spacing: 0.06em;
  margin-top: 2px;
}
.nav-main .dropdown a strong {
  font-weight: 500;
  display: block;
}
.nav-main .dropdown .divider {
  height: 1px;
  background: var(--hairline);
  margin: 0.5rem 1rem;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.icon-btn {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--sumi-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 8px 14px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--washi);
}
.icon-btn:hover { border-color: var(--hi); color: var(--hi); }
.cart-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-size: 11px;
  background: var(--hi);
  color: var(--kinari);
  border-radius: 999px;
  font-family: var(--font-sans);
}

/* ===== Layout helpers ===== */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section {
  padding: clamp(3rem, 7vw, 6rem) 0;
}
.section-tight {
  padding: clamp(2rem, 4vw, 3.5rem) 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.36em;
  color: var(--hi);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--hi);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin: 0 0 0.5rem;
  line-height: 1.3;
}
.section-title .vertical {
  writing-mode: vertical-rl;
  display: inline-block;
  font-size: 0.7em;
  color: var(--hai);
  margin-left: 0.8rem;
  letter-spacing: 0.3em;
}
.section-lead {
  font-size: 1rem;
  color: var(--sumi-soft);
  max-width: 56ch;
  margin: 0 0 2.5rem;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--washi) 0%, var(--kinari) 100%);
  border-bottom: 1px solid var(--hairline);
}
.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 7rem) var(--gutter) clamp(3rem, 6vw, 5rem);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
.hero-side {
  position: absolute;
  left: clamp(0.5rem, 2vw, 1.5rem);
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.4em;
  color: var(--hai);
}
.hero-side::before {
  content: "";
  display: inline-block;
  width: 1px;
  height: 36px;
  background: var(--hai-light);
  margin-bottom: 12px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: 0.02em;
  margin: 0 0 1.5rem;
}
.hero h1 .hi { color: var(--hi); }
.hero h1 .small {
  display: block;
  font-size: 0.42em;
  letter-spacing: 0.36em;
  color: var(--hai);
  margin-bottom: 1.2rem;
  font-weight: 400;
}
.hero p.lead {
  font-size: 1.05rem;
  color: var(--sumi-soft);
  max-width: 44ch;
  margin: 0 0 2rem;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 14px 28px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  border: 1px solid var(--sumi);
  background: var(--sumi);
  color: var(--kinari);
  transition: all .2s ease;
  border-radius: 0;
}
.btn:hover { background: var(--hi); border-color: var(--hi); color: var(--kinari); }
.btn-ghost {
  background: transparent;
  color: var(--sumi);
}
.btn-ghost:hover { background: var(--sumi); color: var(--kinari); }
.btn-hi {
  background: var(--hi);
  border-color: var(--hi);
}
.btn-hi:hover { background: var(--hi-deep); border-color: var(--hi-deep); }
.btn-block { width: 100%; justify-content: center; }

/* hero visual — abstract instrument composition */
.hero-visual {
  position: relative;
  aspect-ratio: 4/5;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(212, 175, 106, 0.22), transparent 60%),
    linear-gradient(160deg, #2a221b 0%, #1a1612 100%);
  overflow: hidden;
  border-radius: 2px;
  box-shadow: var(--shadow);
}
.hero-visual::before {
  /* seigaiha wave pattern */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 50% 100%, transparent 18px, rgba(212, 175, 106, 0.12) 19px, rgba(212, 175, 106, 0.12) 20px, transparent 21px);
  background-size: 40px 20px;
  background-position: 0 100%;
  opacity: 0.55;
}
.hero-visual .kanji {
  position: absolute;
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--kinari);
  user-select: none;
}
.hero-visual .kanji.big {
  font-size: clamp(7rem, 18vw, 14rem);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  opacity: 0.92;
  letter-spacing: -0.08em;
}
.hero-visual .kanji.stamp {
  bottom: 7%;
  right: 7%;
  width: 64px;
  height: 64px;
  background: var(--hi);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--kinari);
  letter-spacing: 0;
}
.hero-visual .meta {
  position: absolute;
  bottom: 7%;
  left: 7%;
  font-family: var(--font-sans);
  color: var(--kincha-soft);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}
.hero-visual .meta strong {
  display: block;
  color: var(--kinari);
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  margin-top: 6px;
}

/* ===== Marquee strip ===== */
.brand-strip {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: var(--washi);
  font-family: var(--font-sans);
  letter-spacing: 0.32em;
  font-size: 0.78rem;
  color: var(--hai);
}
.brand-strip-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand-strip span { white-space: nowrap; }

/* ===== Category grid ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.cat-card {
  position: relative;
  display: block;
  aspect-ratio: 4/5;
  overflow: hidden;
  background: var(--sumi);
  color: var(--kinari);
  isolation: isolate;
}
.cat-card .bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: clamp(7rem, 12vw, 11rem);
  color: var(--kincha);
  opacity: 0.6;
  transition: transform .6s ease, opacity .4s ease;
}
.cat-card[data-tone="hi"]      .bg { color: var(--hi); }
.cat-card[data-tone="moegi"]   .bg { color: var(--moegi); }
.cat-card[data-tone="kincha"]  .bg { color: var(--kincha); }
.cat-card[data-tone="washi"]   { background: var(--kinari); color: var(--sumi); }
.cat-card[data-tone="washi"]   .bg { color: var(--sumi); opacity: 0.18; }
.cat-card[data-tone="sumi"]    { background: #1a1612; }

.cat-card .info {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.5rem 1.5rem 1.4rem;
  background: linear-gradient(180deg, transparent, rgba(26, 22, 18, 0.85));
  font-family: var(--font-serif);
}
.cat-card[data-tone="washi"] .info {
  background: linear-gradient(180deg, transparent, rgba(245, 239, 226, 0.95));
  color: var(--sumi);
}
.cat-card .info h3 {
  margin: 0 0 0.2rem;
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  font-weight: 500;
}
.cat-card .info p {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  opacity: 0.75;
  text-transform: uppercase;
}
.cat-card:hover .bg { transform: scale(1.06); opacity: 0.85; }
.cat-card[data-tone="washi"]:hover .bg { opacity: 0.32; }

/* ===== Product cards ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.product-grid.three { grid-template-columns: repeat(3, 1fr); }

.product-card {
  background: var(--washi);
  border: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--hairline-strong);
}
.product-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--kinari);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-thumb .glyph {
  font-family: var(--font-serif);
  font-size: clamp(5rem, 9vw, 8rem);
  color: var(--sumi);
  opacity: 0.78;
  letter-spacing: -0.08em;
  line-height: 1;
}
.product-thumb[data-tone="hi"]     { background: linear-gradient(155deg, #3a1418 0%, #1a1612 100%); }
.product-thumb[data-tone="hi"]     .glyph { color: var(--kincha-soft); opacity: 1; }
.product-thumb[data-tone="moegi"]  { background: linear-gradient(155deg, #283426 0%, #1a1612 100%); }
.product-thumb[data-tone="moegi"]  .glyph { color: var(--kincha-soft); opacity: 1; }
.product-thumb[data-tone="kincha"] { background: linear-gradient(155deg, #4a3818 0%, #1a1612 100%); }
.product-thumb[data-tone="kincha"] .glyph { color: var(--kincha-soft); opacity: 1; }
.product-thumb[data-tone="sumi"]   { background: linear-gradient(155deg, #2a2620 0%, #0e0c0a 100%); }
.product-thumb[data-tone="sumi"]   .glyph { color: var(--kinari); opacity: 0.92; }
.product-thumb[data-tone="washi"]  { background: var(--kinari); }
.product-thumb[data-tone="washi"]  .glyph { color: var(--sumi); opacity: 0.82; }

.product-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 50% 100%, transparent 14px, rgba(255, 255, 255, 0.06) 15px, rgba(255, 255, 255, 0.06) 16px, transparent 17px);
  background-size: 32px 16px;
  background-position: 0 100%;
  pointer-events: none;
  opacity: 0.4;
}
.product-thumb[data-tone="washi"]::after { display: none; }

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--hi);
  color: var(--kinari);
  font-family: var(--font-sans);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  padding: 4px 10px;
  z-index: 2;
}
.product-info {
  padding: 1.1rem 1.2rem 1.3rem;
  border-top: 1px solid var(--hairline);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.product-info .brand {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  color: var(--hai);
  text-transform: uppercase;
}
.product-info h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  margin: 0;
  letter-spacing: 0.04em;
  line-height: 1.4;
}
.product-info .price {
  margin-top: auto;
  padding-top: 0.6rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--hi);
  letter-spacing: 0.05em;
}
.product-info .price .yen {
  font-size: 0.8em;
  margin-right: 2px;
  color: var(--sumi);
}
.tc-card-trust {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--moegi);
  margin-top: 0.6rem;
  padding-top: 0.55rem;
  border-top: 1px dotted var(--hairline);
}
.tc-card-trust::before {
  content: "✓ ";
  color: var(--moegi);
  font-weight: 700;
  margin-right: 2px;
}
.tc-trust-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin: 1.5rem 0;
  padding: 1rem;
  background: var(--kinari);
  border-left: 3px solid var(--moegi);
}
.tc-trust-item {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  line-height: 1.4;
}
.tc-trust-item .tc-trust-icon {
  color: var(--moegi);
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 1px;
}
.tc-trust-item strong {
  display: block;
  font-family: var(--font-serif);
  color: var(--sumi);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}
.tc-trust-item span {
  color: var(--hai);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}
@media (max-width: 640px) {
  .tc-trust-row { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Two-column feature ===== */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }

.feature-visual {
  aspect-ratio: 5/6;
  background: linear-gradient(160deg, #2a221b 0%, #0e0c0a 100%);
  position: relative;
  overflow: hidden;
}
.feature-visual .kanji {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: clamp(8rem, 16vw, 14rem);
  color: var(--kincha);
  opacity: 0.45;
}
.feature-visual .label {
  position: absolute;
  bottom: 8%;
  left: 8%;
  font-family: var(--font-sans);
  color: var(--kincha-soft);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

/* ===== Service cards ===== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: var(--washi);
  border: 1px solid var(--hairline);
  padding: 2rem 1.8rem;
  position: relative;
  transition: border-color .25s ease, transform .25s ease;
}
.service-card:hover {
  border-color: var(--hi);
  transform: translateY(-3px);
}
.service-card .num {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  color: var(--hi);
  margin-bottom: 1rem;
  display: block;
}
.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin: 0 0 0.4rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}
.service-card .kanji-bg {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-serif);
  font-size: 4.5rem;
  color: var(--hairline);
  line-height: 1;
  font-weight: 500;
  pointer-events: none;
}
.service-card p {
  margin: 0;
  color: var(--sumi-soft);
  font-size: 0.95rem;
}
.service-card ul {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-sans);
  font-size: 0.85rem;
}
.service-card ul li {
  padding: 0.4rem 0;
  border-bottom: 1px dotted var(--hairline);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.service-card ul li:last-child { border-bottom: none; }
.service-card ul li span:last-child { color: var(--hi); }

/* ===== About page ===== */
.about-hero {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding: clamp(3rem, 6vw, 5rem) 0;
  align-items: end;
}
.about-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 500;
  margin: 1rem 0 1.5rem;
  line-height: 1.2;
}
.about-hero h1 .accent { color: var(--hi); }
.about-hero p { font-size: 1.05rem; color: var(--sumi-soft); }

.timeline {
  border-left: 1px solid var(--hairline-strong);
  padding-left: 2rem;
  margin: 2rem 0;
}
.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.45rem;
  top: 0.7rem;
  width: 9px;
  height: 9px;
  background: var(--hi);
  border-radius: 50%;
}
.timeline-item .year {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--hi);
  letter-spacing: 0.08em;
}
.timeline-item h4 {
  margin: 0.2rem 0 0.4rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
}
.timeline-item p { margin: 0; color: var(--sumi-soft); }

.philosophy {
  background: var(--sumi);
  color: var(--kinari);
  padding: clamp(3rem, 6vw, 5rem) 0;
  position: relative;
  overflow: hidden;
}
.philosophy::before {
  content: "道";
  position: absolute;
  top: 50%;
  right: -3rem;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: 22rem;
  color: var(--kincha);
  opacity: 0.08;
  font-weight: 500;
}
.philosophy h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 1.5rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}
.philosophy h2 .accent { color: var(--kincha-soft); }
.philosophy p { max-width: 60ch; color: rgba(245, 239, 226, 0.85); font-size: 1.05rem; }
.philosophy .eyebrow { color: var(--kincha-soft); }
.philosophy .eyebrow::before { background: var(--kincha-soft); }

/* ===== Products page ===== */
.products-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2.5rem;
}
.filter-aside {
  font-family: var(--font-sans);
  font-size: 0.88rem;
}
.filter-aside h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  margin: 0 0 0.8rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--hairline-strong);
  font-weight: 500;
}
.filter-aside ul {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
}
.filter-aside li {
  padding: 0.5rem 0;
  border-bottom: 1px dotted var(--hairline);
  display: flex;
  justify-content: space-between;
  cursor: pointer;
  color: var(--sumi-soft);
}
.filter-aside li:hover, .filter-aside li.active {
  color: var(--hi);
}
.filter-aside li .count { color: var(--hai); font-size: 0.78rem; }

.products-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 1px solid var(--hairline-strong);
  padding-bottom: 1.2rem;
  margin-bottom: 2rem;
}
.products-head .count {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--hai);
}
.sort-select {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  padding: 8px 14px;
  border: 1px solid var(--hairline);
  background: var(--washi);
  color: var(--sumi);
}

/* ===== Product detail ===== */
.detail-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding: 2rem 0 4rem;
}
.detail-gallery {
  display: grid;
  gap: 0.75rem;
}
.detail-main-img {
  aspect-ratio: 1 / 1;
  background: linear-gradient(155deg, #2a221b 0%, #1a1612 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.detail-main-img .glyph {
  font-family: var(--font-serif);
  font-size: 18rem;
  color: var(--kincha-soft);
  line-height: 1;
}
.detail-main-img .stamp {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 64px;
  height: 64px;
  background: var(--hi);
  color: var(--kinari);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  letter-spacing: 0;
}
.thumb-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
}
.thumb-row > div {
  aspect-ratio: 1 / 1;
  background: linear-gradient(155deg, #2a221b 0%, #1a1612 100%);
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--kincha-soft);
  cursor: pointer;
  opacity: 0.7;
  transition: opacity .2s ease;
}
.thumb-row > div:hover, .thumb-row > div.active { opacity: 1; }

.detail-info .breadcrumb {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--hai);
  margin-bottom: 1.2rem;
  text-transform: uppercase;
}
.detail-info .breadcrumb a:hover { color: var(--hi); }
.detail-info .brand-tag {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  color: var(--hi);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  display: block;
}
.detail-info h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  font-weight: 500;
  margin: 0 0 0.4rem;
  line-height: 1.3;
}
.detail-info .model {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--hai);
  margin-bottom: 1.5rem;
}
.detail-info .price-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.2rem 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 1.5rem;
}
.detail-info .price-row .price {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--hi);
  letter-spacing: 0.04em;
}
.detail-info .price-row .price .yen {
  font-size: 0.6em;
  color: var(--sumi);
  margin-right: 4px;
}
.detail-info .price-row .stock {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--moegi);
}

.detail-info .desc { color: var(--sumi-soft); margin-bottom: 1.5rem; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-bottom: 2rem;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 0.7rem 0;
  border-bottom: 1px dotted var(--hairline);
}
.spec-table th {
  width: 30%;
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--hai);
  font-size: 0.78rem;
}

.qty-row {
  display: flex;
  gap: 1rem;
  align-items: stretch;
  margin-bottom: 1rem;
}
.qty-stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--sumi);
}
.qty-stepper button {
  width: 44px;
  height: 100%;
  font-size: 1.2rem;
  color: var(--sumi);
}
.qty-stepper button:hover { background: var(--sumi); color: var(--kinari); }
.qty-stepper input {
  width: 56px;
  height: 100%;
  border: none;
  border-left: 1px solid var(--sumi);
  border-right: 1px solid var(--sumi);
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1rem;
  background: var(--washi);
}
.qty-stepper input::-webkit-outer-spin-button,
.qty-stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.action-row {
  display: flex;
  gap: 0.8rem;
}
.action-row .btn { flex: 1; padding: 16px 24px; justify-content: center; }

/* ===== Cart page ===== */
.cart-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  padding: 2rem 0 4rem;
}
.cart-items {
  border-top: 1px solid var(--hairline-strong);
}
.cart-row {
  display: grid;
  grid-template-columns: 110px 1fr auto auto auto;
  gap: 1.2rem;
  align-items: center;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--hairline);
}
.cart-row .thumb {
  aspect-ratio: 1 / 1;
  background: linear-gradient(155deg, #2a221b 0%, #1a1612 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--kincha-soft);
}
.cart-row .name { font-family: var(--font-serif); }
.cart-row .name .brand-tag {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--hai);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}
.cart-row .name h4 {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
}
.cart-row .name a:hover h4 { color: var(--hi); }
.cart-row .qty-stepper { height: 38px; }
.cart-row .qty-stepper button { width: 32px; font-size: 0.95rem; }
.cart-row .qty-stepper input { width: 40px; font-size: 0.9rem; }
.cart-row .line-price {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--hi);
  min-width: 100px;
  text-align: right;
}
.cart-row .remove {
  color: var(--hai);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  font-family: var(--font-sans);
  padding: 4px 8px;
}
.cart-row .remove:hover { color: var(--hi); }

.cart-empty {
  text-align: center;
  padding: 4rem 0;
  color: var(--hai);
  font-family: var(--font-serif);
}
.cart-empty .kanji {
  font-size: 6rem;
  color: var(--hairline-strong);
  margin-bottom: 1rem;
}

.cart-summary {
  background: var(--kinari);
  padding: 2rem;
  align-self: start;
  position: sticky;
  top: 110px;
}
.cart-summary h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin: 0 0 1.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--hairline-strong);
  font-weight: 500;
  letter-spacing: 0.12em;
}
.summary-line {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  font-size: 0.95rem;
  color: var(--sumi-soft);
}
.summary-total {
  display: flex;
  justify-content: space-between;
  padding: 1rem 0 1.5rem;
  margin-top: 0.5rem;
  border-top: 1px solid var(--hairline-strong);
  font-family: var(--font-serif);
}
.summary-total .label { font-size: 1rem; letter-spacing: 0.1em; }
.summary-total .value { font-size: 1.6rem; color: var(--hi); }
.summary-note {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--hai);
  line-height: 1.6;
  margin-top: 1rem;
}

/* ===== Services page extras ===== */
.service-row {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  border-bottom: 1px solid var(--hairline);
  align-items: center;
}
.service-row:last-child { border-bottom: none; }
.service-visual {
  aspect-ratio: 4/5;
  background: linear-gradient(160deg, #2a221b 0%, #0e0c0a 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-visual .kanji {
  font-family: var(--font-serif);
  font-size: 14rem;
  color: var(--kincha);
  opacity: 0.55;
  line-height: 1;
}
.service-visual .num {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  color: var(--kincha-soft);
}
.service-content h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  margin: 0.4rem 0 1rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.service-content h3 .accent { color: var(--hi); }
.service-content > .eyebrow { margin-bottom: 0.4rem; }
.service-content p { color: var(--sumi-soft); margin: 0 0 1.2rem; }
.service-content .features {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  display: grid;
  gap: 0.6rem;
}
.service-content .features li {
  padding-left: 1.4rem;
  position: relative;
  font-size: 0.95rem;
}
.service-content .features li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--hi);
}
.service-content .pricelist {
  margin-top: 1.5rem;
  border-top: 1px solid var(--hairline);
}
.service-content .pricelist li {
  display: flex;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px dotted var(--hairline);
  font-family: var(--font-sans);
  font-size: 0.88rem;
}
.service-content .pricelist li span:last-child { color: var(--hi); font-family: var(--font-serif); }

/* ===== Footer ===== */
.footer {
  background: var(--sumi);
  color: var(--kinari);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: "唐川";
  position: absolute;
  font-family: var(--font-serif);
  font-size: 28rem;
  color: var(--kincha);
  opacity: 0.04;
  top: 50%;
  right: -4rem;
  transform: translateY(-50%);
  letter-spacing: -0.05em;
  line-height: 1;
  font-weight: 500;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr 1fr;
  gap: 2rem;
  position: relative;
  z-index: 1;
}
.footer h5 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  margin: 0 0 1rem;
  font-weight: 500;
  color: var(--kincha-soft);
}
.footer ul { list-style: none; margin: 0; padding: 0; font-family: var(--font-sans); font-size: 0.85rem; }
.footer ul li { padding: 0.3rem 0; opacity: 0.78; }
.footer ul li a:hover { color: var(--kincha-soft); opacity: 1; }
.footer-brand .brand-mark { color: var(--kinari); font-size: 1.6rem; }
.footer-brand p { font-family: var(--font-sans); font-size: 0.85rem; opacity: 0.7; margin: 1rem 0; max-width: 32ch; }
.footer-bottom {
  max-width: var(--max);
  margin: 3rem auto 0;
  padding: 1.5rem var(--gutter) 0;
  border-top: 1px solid rgba(245, 239, 226, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: rgba(245, 239, 226, 0.5);
  position: relative;
  z-index: 1;
}
.footer-bottom .footer-legal a {
  color: rgba(245, 239, 226, 0.7);
  transition: color .2s ease;
}
.footer-bottom .footer-legal a:hover { color: var(--kincha-soft); }

/* ===== Divider / Sumi line ===== */
.sumi-divider {
  text-align: center;
  margin: 3rem 0;
  font-family: var(--font-serif);
  color: var(--hi);
  letter-spacing: 1rem;
}
.sumi-divider::before, .sumi-divider::after {
  content: "—";
  color: var(--hairline-strong);
  margin: 0 1rem;
}

/* ===== Real image integration ===== */
.bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  display: block;
}

/* Hero / large visual blocks: darken image so overlaid text is legible */
.hero-visual .bg-img,
.feature-visual .bg-img,
.detail-main-img .bg-img,
.service-visual .bg-img {
  filter: brightness(0.55) contrast(1.05) saturate(0.9);
}
.hero-visual .kanji.big { opacity: 0.18; z-index: 1; }
.hero-visual .meta,
.hero-visual .kanji.stamp,
.feature-visual .label,
.feature-visual .kanji,
.detail-main-img .stamp,
.detail-main-img .glyph,
.service-visual .num,
.service-visual .kanji {
  z-index: 2;
}
.feature-visual .kanji { opacity: 0.25; }
.detail-main-img .glyph { display: none; }
.service-visual .kanji { opacity: 0.22; }

/* Category cards: lighter darken; let info gradient still work */
.cat-card .bg-img {
  filter: brightness(0.75) saturate(0.95);
  transition: transform .55s ease, filter .35s ease;
}
.cat-card:hover .bg-img {
  transform: scale(1.06);
  filter: brightness(0.65) saturate(1.0);
}
.cat-card .bg { display: none; }
.cat-card .info { z-index: 2; }

/* Product card thumbnails: image fills, badge stays on top */
.product-thumb .bg-img {
  filter: brightness(0.88) saturate(0.95);
  transition: transform .4s ease;
}
.product-card:hover .product-thumb .bg-img {
  transform: scale(1.06);
}
.product-thumb .glyph { display: none; }
.product-thumb .product-badge { z-index: 2; }
.product-thumb::after {
  /* keep the seigaiha hint but very subtle over image */
  opacity: 0.18;
  z-index: 1;
}

/* Cart row & product detail thumbs */
.cart-row .thumb {
  position: relative;
  overflow: hidden;
  font-size: 0;
}
.cart-row .thumb .bg-img { filter: brightness(0.9); }
.thumb-row > div {
  position: relative;
  overflow: hidden;
  font-size: 0;
}
.thumb-row > div .bg-img { filter: brightness(0.75); }
.thumb-row > div.active .bg-img { filter: brightness(1); }

/* Service-visual num badge */
.service-visual { z-index: 0; }

/* ===== 漢堡選單 ===== */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--hairline);
  background: var(--washi);
  cursor: pointer;
  position: relative;
  font-size: 0;
  border-radius: 0;
  flex-shrink: 0;
  padding: 0;
}
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  height: 1.5px;
  background: var(--sumi);
  transition: transform 0.25s ease, top 0.25s ease, opacity 0.2s ease;
}
.nav-toggle::before { top: 15px; }
.nav-toggle::after  { top: 25px; }
body.nav-open .nav-toggle::before { top: 20px; transform: rotate(45deg); }
body.nav-open .nav-toggle::after  { top: 20px; transform: rotate(-45deg); }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-side { display: none; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .product-grid.three { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .about-hero, .service-row, .detail-layout, .cart-layout, .products-layout { grid-template-columns: 1fr; }
  .cart-summary { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem 1rem; }
  .footer-inner > div:first-child { grid-column: 1 / -1; }
  /* About 沿革段落改為單欄 */
  .section .wrap[style*="grid-template-columns:1fr 1.6fr"] {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
}

/* 平板以下：啟用漢堡選單 */
@media (max-width: 760px) {
  .header-inner {
    grid-template-columns: 1fr auto auto;
    gap: 0.6rem;
    padding: 14px var(--gutter);
  }
  .brand-mark { font-size: 1.4rem; }
  .brand-sub { display: none; }
  .nav-toggle { display: block; }
  .icon-btn { padding: 8px 12px; }
  .icon-btn .lbl { display: none; }

  .nav-main {
    position: fixed;
    left: 0;
    right: 0;
    top: 70px;
    background: var(--washi);
    flex-direction: column;
    gap: 0;
    padding: 0.6rem var(--gutter) 1.2rem;
    border-bottom: 1px solid var(--hairline);
    box-shadow: 0 14px 28px -12px rgba(26, 22, 18, 0.18);
    transform: translateY(-115%);
    transition: transform 0.28s ease;
    z-index: 49;
    display: flex;
  }
  body.nav-open .nav-main { transform: translateY(0); }
  .nav-main a {
    padding: 1rem 0;
    border-bottom: 1px solid var(--hairline);
    text-align: center;
    font-size: 1.05rem;
    letter-spacing: 0.18em;
  }
  .nav-main a:last-child { border-bottom: none; }
  .nav-main a::after { display: none; }

  /* 手機版下拉：直接攤平顯示 */
  .nav-main .nav-item { width: 100%; }
  .nav-main .nav-item > a { display: block; }
  .nav-main .nav-item .chev { display: none; }
  .nav-main .dropdown {
    position: static;
    transform: none !important;
    opacity: 1;
    visibility: visible;
    background: rgba(26,22,18,0.03);
    border: none;
    box-shadow: none;
    padding: 0.3rem 0 0.6rem;
    min-width: 0;
    border-bottom: 1px solid var(--hairline);
    margin-bottom: 0;
  }
  .nav-main .dropdown::before { display: none; }
  .nav-main .dropdown a {
    padding: 0.6rem 0;
    font-size: 0.9rem;
    letter-spacing: 0.16em;
    justify-content: center;
    color: var(--hai);
    border: none;
  }
  .nav-main .dropdown a:hover {
    background: transparent;
    color: var(--hi);
    padding-left: 0;
    border: none;
  }
  .nav-main .dropdown a .desc { display: none; }
  .nav-main .dropdown a .glyph { display: none; }
}

/* 手機 */
@media (max-width: 640px) {
  :root { --gutter: 1rem; }

  .topbar-inner { font-size: 10.5px; letter-spacing: 0.12em; }
  .topbar-inner > span:nth-child(1),
  .topbar-inner > span:nth-child(2) { display: none; }
  .topbar-inner { justify-content: center; }

  .product-grid, .product-grid.three { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 1.8rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0.6rem; }

  /* Hero：更緊湊 */
  .hero-inner { padding-top: 2.5rem; padding-bottom: 2.5rem; gap: 2rem; }
  .hero h1 { font-size: clamp(2rem, 8.5vw, 3rem); }
  .hero h1 .small { font-size: 0.5em; letter-spacing: 0.2em; }
  .hero p.lead { font-size: 1rem; }
  .hero-cta { gap: 0.6rem; }
  .hero-cta .btn { flex: 1; justify-content: center; padding: 12px 16px; font-size: 0.88rem; letter-spacing: 0.12em; }

  /* 品牌條 → 橫向捲動避免換行散亂 */
  .brand-strip-inner {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    gap: 1.8rem;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
    scrollbar-width: none;
  }
  .brand-strip-inner::-webkit-scrollbar { display: none; }
  .brand-strip-inner span { flex-shrink: 0; }

  /* Section 區塊更緊湊 */
  .section { padding: 3rem 0; }
  .section-title { font-size: clamp(1.6rem, 6.5vw, 2rem); }
  .section-title .vertical { font-size: 0.5em; }

  /* About hero 視覺方塊變小，避免太佔螢幕 */
  .about-hero { padding: 2rem 0 1rem; }
  .about-hero .hero-visual { aspect-ratio: 4/3 !important; max-width: 100%; }

  /* 服務卡片更小的 padding */
  .service-card { padding: 1.4rem 1.2rem; }
  .service-card .kanji-bg { font-size: 3.5rem; top: 0.6rem; right: 0.8rem; }
  .service-grid { grid-template-columns: 1fr; gap: 1rem; }

  /* 商品一覽 filter 區塊放在 grid 上方而非旁邊 */
  .filter-aside h4 { font-size: 0.85rem; margin-top: 1rem; }
  .filter-aside ul { margin-bottom: 1rem; }
  .filter-aside ul#priceFilter,
  .filter-aside ul#brandFilter,
  .filter-aside ul#catFilter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.8rem;
  }
  .filter-aside li {
    border-bottom: none;
    padding: 0.3rem 0.7rem;
    background: var(--washi);
    border: 1px solid var(--hairline);
    font-size: 0.82rem;
  }
  .filter-aside li.active {
    background: var(--sumi);
    color: var(--kinari);
    border-color: var(--sumi);
  }
  .filter-aside li .count { display: none; }

  /* 商品詳情頁更緊湊 */
  .detail-info h1 { font-size: 1.4rem; }
  .detail-info .price-row .price { font-size: 1.6rem; }
  .detail-info .price-row { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
  .action-row { flex-direction: column; }
  .qty-row { flex-direction: column; align-items: stretch; gap: 0.6rem; }
  .qty-stepper { width: fit-content; }

  /* 購物車列：3 欄佈局 */
  .cart-row {
    grid-template-columns: 80px 1fr auto;
    gap: 0.8rem;
    padding: 1rem 0;
  }
  .cart-row .qty-stepper,
  .cart-row .line-price,
  .cart-row .remove { grid-column: 2 / 4; justify-self: end; }
  .cart-row .name h4 { font-size: 0.95rem; }

  /* 哲學頁四欄改兩欄 */
  .philosophy [style*="repeat(4, 1fr)"] {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1.5rem !important;
  }

  /* 法務頁面縮小 padding */
  .legal-wrap { padding: 2rem 0; }
  .legal-wrap h1 { font-size: 1.7rem; }
  .legal-wrap h2 { font-size: 1.1rem; margin: 2rem 0 0.8rem; }

  /* CTA 區塊按鈕全寬 */
  .hero-cta .btn,
  .feature-row .btn { width: 100%; }
}

/* 超小手機（iPhone SE 等） */
@media (max-width: 380px) {
  .hero h1 { font-size: 1.9rem; }
  .section-title { font-size: 1.5rem; }
  .brand-mark { font-size: 1.25rem; }
}


/* 錨點跳轉時避開 sticky header */
[id]{ scroll-margin-top: 100px; }