/* ===== Base & Tokens ===== */
:root {
  --bg: #0c0b09;
  --bg-soft: #141210;
  --bg-card: #1a1713;
  --ink: #f4efe6;
  --muted: #b9ac97;
  --gold: #c8a24c;
  --gold-2: #e7c884;
  --gold-3: #9c7c33;
  --line: rgba(200, 162, 76, 0.22);
  --maxw: 1200px;
  --serif-en: "Cormorant Garamond", "Noto Serif SC", serif;
  --serif-cn: "Noto Serif SC", "Cormorant Garamond", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif-cn);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(var(--maxw), 90%); margin: 0 auto; }

.gold-text {
  background: linear-gradient(120deg, var(--gold-2), var(--gold), var(--gold-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 34px;
  font-family: var(--serif-cn);
  font-size: 0.95rem;
  letter-spacing: 2px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.35s ease;
}
.btn-gold {
  background: linear-gradient(120deg, var(--gold-2), var(--gold));
  color: #241c08;
  font-weight: 600;
}
.btn-gold:hover { box-shadow: 0 10px 30px rgba(200, 162, 76, 0.35); transform: translateY(-2px); }
.btn-ghost { border-color: var(--line); color: var(--gold-2); }
.btn-ghost:hover { border-color: var(--gold); background: rgba(200, 162, 76, 0.08); }
.btn-block { width: 100%; text-align: center; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.4s ease, padding 0.4s ease, box-shadow 0.4s ease;
}
.site-header.scrolled {
  background: rgba(12, 11, 9, 0.92);
  padding: 14px 0;
  box-shadow: 0 1px 0 var(--line);
  backdrop-filter: blur(10px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1px solid var(--gold);
  color: var(--gold-2);
  font-family: var(--serif-en);
  font-size: 1.5rem;
  border-radius: 2px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--serif-en); letter-spacing: 4px; font-size: 1.25rem; color: var(--gold-2); }
.brand-sub { font-size: 0.72rem; letter-spacing: 4px; color: var(--muted); }
.main-nav { display: flex; gap: 34px; }
.main-nav a {
  font-size: 0.95rem;
  letter-spacing: 1px;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px; background: var(--gold); transition: width 0.3s ease;
}
.main-nav a:hover { color: var(--gold-2); }
.main-nav a:hover::after { width: 100%; }
.btn-reserve {
  border: 1px solid var(--gold);
  color: var(--gold-2);
  padding: 10px 22px;
  font-size: 0.9rem;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}
.btn-reserve:hover { background: var(--gold); color: #241c08; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--gold-2); transition: 0.3s; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
}
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(7,6,5,0.92) 0%, rgba(7,6,5,0.6) 42%, rgba(7,6,5,0.15) 78%),
    linear-gradient(0deg, rgba(7,6,5,0.6), transparent 40%);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-eyebrow { color: var(--gold-2); letter-spacing: 6px; font-size: 0.85rem; margin-bottom: 22px; }
.hero-title {
  font-family: var(--serif-cn);
  font-weight: 500;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.15;
  margin-bottom: 26px;
}
.hero-desc { color: var(--muted); font-size: 1.1rem; max-width: 520px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }
.hero-scroll {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  z-index: 2; color: var(--muted); letter-spacing: 3px; font-size: 0.72rem;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero-scroll span { width: 1px; height: 46px; background: linear-gradient(var(--gold), transparent); animation: scrollLine 2s infinite; }
@keyframes scrollLine { 0%,100% { opacity: 0.3; transform: scaleY(0.6);} 50% { opacity: 1; transform: scaleY(1);} }

/* ===== Marquee ===== */
.marquee { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-soft); overflow: hidden; }
.marquee-track { display: flex; gap: 60px; white-space: nowrap; padding: 18px 0; animation: marquee 30s linear infinite; width: max-content; }
.marquee-track span { color: var(--gold-2); letter-spacing: 3px; font-family: var(--serif-en); font-size: 1.05rem; }
@keyframes marquee { from { transform: translateX(0);} to { transform: translateX(-50%);} }

/* ===== Section common ===== */
section { padding: 110px 0; }
.section-eyebrow { color: var(--gold); letter-spacing: 5px; font-size: 0.8rem; margin-bottom: 16px; }
.section-eyebrow.light { color: var(--gold-2); }
.section-title { font-weight: 500; font-size: clamp(1.9rem, 3.6vw, 3rem); line-height: 1.25; margin-bottom: 22px; }
.section-title.light { color: #fff; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.section-note, .section-head .section-note { color: var(--muted); }
.lead { color: var(--muted); font-size: 1.08rem; margin-bottom: 28px; }

/* ===== Intro ===== */
.intro { background: var(--bg-soft); }
.intro-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: center; }
.stat-row { display: flex; gap: 44px; margin-top: 30px; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-family: var(--serif-en); font-size: 2.4rem; color: var(--gold-2); }
.stat-label { color: var(--muted); font-size: 0.9rem; letter-spacing: 1px; }
.intro-figure { display: grid; place-items: center; }
.gem-card {
  position: relative; width: 100%; max-width: 380px; aspect-ratio: 4/5;
  border: 1px solid var(--line); overflow: hidden;
}
.gem-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
.gem-card:hover img { transform: scale(1.06); }
.gem-badge {
  position: absolute; left: 0; bottom: 20px;
  background: linear-gradient(120deg, var(--gold-2), var(--gold));
  color: #241c08; font-size: 0.72rem; letter-spacing: 2px; font-weight: 600;
  padding: 8px 18px;
}

/* ===== Collections ===== */
.collection-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.col-card { background: var(--bg-card); border: 1px solid var(--line); overflow: hidden; transition: transform 0.4s ease, box-shadow 0.4s ease; }
.col-card:hover { transform: translateY(-8px); box-shadow: 0 24px 50px rgba(0,0,0,0.5); }
.col-media { height: 260px; position: relative; overflow: hidden; }
.col-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease; }
.col-card:hover .col-media img { transform: scale(1.08); }
.col-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 45%, rgba(12,11,9,0.55)); pointer-events: none; }
.col-body { padding: 26px 26px 30px; }
.col-tag { color: var(--gold); letter-spacing: 3px; font-size: 0.72rem; }
.col-body h3 { font-weight: 500; font-size: 1.5rem; margin: 10px 0 10px; }
.col-body p { color: var(--muted); font-size: 0.96rem; margin-bottom: 16px; }
.col-link { color: var(--gold-2); letter-spacing: 1px; font-size: 0.9rem; transition: gap 0.3s; }
.col-link:hover { color: var(--gold); }

/* ===== Craft ===== */
.craft { background: var(--bg-soft); }
.craft-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.craft-list { margin-top: 26px; display: grid; gap: 22px; }
.craft-list li { display: flex; gap: 20px; align-items: flex-start; }
.craft-no { font-family: var(--serif-en); color: var(--gold); font-size: 1.6rem; min-width: 42px; }
.craft-list h4 { font-weight: 500; font-size: 1.15rem; margin-bottom: 4px; color: var(--gold-2); }
.craft-list p { color: var(--muted); font-size: 0.95rem; }
.craft-figure { display: grid; place-items: center; }
.craft-visual {
  width: 100%; aspect-ratio: 1/1; max-width: 480px; border: 1px solid var(--line); position: relative; overflow: hidden;
}
.craft-visual img { width: 100%; height: 100%; object-fit: cover; }
.craft-visual::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(160deg, transparent 55%, rgba(200,162,76,0.12));
  box-shadow: inset 0 0 60px rgba(0,0,0,0.4);
}

/* ===== Story ===== */
.story { position: relative; overflow: hidden; }
.story-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.story-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7,6,5,0.9) 0%, rgba(7,6,5,0.7) 45%, rgba(7,6,5,0.45) 100%); }
.story-content { position: relative; z-index: 2; text-align: left; max-width: 620px; }
.story-desc { color: #d8cdb8; font-size: 1.12rem; margin-bottom: 34px; }

/* ===== Service ===== */
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.svc-card { background: var(--bg-card); border: 1px solid var(--line); padding: 40px 26px; text-align: center; transition: transform 0.4s, border-color 0.4s; }
.svc-card:hover { transform: translateY(-6px); border-color: var(--gold); }
.svc-ic { font-size: 2.4rem; color: var(--gold-2); margin-bottom: 16px; }
.svc-card h3 { font-weight: 500; font-size: 1.25rem; margin-bottom: 10px; }
.svc-card p { color: var(--muted); font-size: 0.94rem; }

/* ===== Contact ===== */
.contact { background: var(--bg-soft); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.contact-list { margin-top: 20px; display: grid; gap: 16px; }
.contact-list li { display: flex; gap: 18px; color: var(--ink); border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.contact-list span { color: var(--gold); min-width: 84px; letter-spacing: 1px; }
.contact-form { background: var(--bg-card); border: 1px solid var(--line); padding: 40px; }
.field { margin-bottom: 20px; }
.field label { display: block; color: var(--muted); font-size: 0.88rem; letter-spacing: 1px; margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 16px; background: #0e0c0a; border: 1px solid var(--line);
  color: var(--ink); font-family: var(--serif-cn); font-size: 0.98rem; transition: border-color 0.3s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--gold); }
.field textarea { resize: vertical; }
.form-hint { margin-top: 14px; text-align: center; color: var(--gold-2); font-size: 0.9rem; min-height: 1.2em; }

/* ===== Footer ===== */
.site-footer { background: #070605; border-top: 1px solid var(--line); padding-top: 56px; }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; padding-bottom: 34px; border-bottom: 1px solid var(--line); }
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-name { font-family: var(--serif-en); letter-spacing: 3px; color: var(--gold-2); font-size: 1.15rem; }
.footer-slogan { color: var(--muted); font-size: 0.9rem; }
.footer-nav { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-nav a { color: var(--muted); font-size: 0.92rem; transition: color 0.3s; }
.footer-nav a:hover { color: var(--gold-2); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; padding: 24px 0 30px; }
.footer-bottom p { color: var(--muted); font-size: 0.85rem; }
.footer-bottom .record a { color: var(--muted); transition: color 0.3s; }
.footer-bottom .record a:hover { color: var(--gold-2); }
.footer-bottom .sep { margin: 0 10px; color: var(--line); }

/* ===== To top ===== */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border: 1px solid var(--gold);
  background: rgba(12,11,9,0.8); color: var(--gold-2); cursor: pointer;
  font-size: 1.1rem; opacity: 0; pointer-events: none; transition: opacity 0.4s, background 0.3s;
  backdrop-filter: blur(6px);
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { background: var(--gold); color: #241c08; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity 0.9s ease, transform 0.9s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .intro-grid, .craft-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .collection-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-figure { order: -1; }
}
@media (max-width: 768px) {
  .main-nav, .btn-reserve { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(12,11,9,0.98); padding: 12px 5%; border-top: 1px solid var(--line);
  }
  .main-nav.open a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  section { padding: 80px 0; }
  .footer-top { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 540px) {
  .collection-grid, .service-grid { grid-template-columns: 1fr; }
  .stat-row { gap: 24px; }
  .hero-actions { flex-direction: column; }
  .btn { text-align: center; }
  .contact-form { padding: 28px 22px; }
}

/* ===== Product detail page ===== */
.page-hero {
  position: relative; min-height: 62vh; display: flex; align-items: flex-end; overflow: hidden;
}
.page-hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.page-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(7,6,5,0.95) 0%, rgba(7,6,5,0.55) 45%, rgba(7,6,5,0.35) 100%);
}
.page-hero-content { position: relative; z-index: 2; padding-bottom: 60px; max-width: 720px; }
.crumbs { color: var(--muted); font-size: 0.85rem; letter-spacing: 1px; margin-bottom: 18px; }
.crumbs a { color: var(--gold-2); }
.crumbs a:hover { color: var(--gold); }
.crumbs .sep { margin: 0 8px; color: var(--line); }
.page-hero-content h1 { font-weight: 500; font-size: clamp(2.2rem, 5vw, 3.6rem); line-height: 1.2; margin-bottom: 8px; }
.page-hero-content .en-title { color: var(--gold-2); font-family: var(--serif-en); letter-spacing: 3px; font-size: 1.2rem; margin-bottom: 16px; }
.page-hero-content p { color: #d8cdb8; font-size: 1.05rem; max-width: 560px; }

.products { padding: 100px 0; }
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 34px; }
.product-card {
  display: grid; grid-template-columns: 300px 1fr; gap: 0;
  background: var(--bg-card); border: 1px solid var(--line); overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(0,0,0,0.5); border-color: var(--gold); }
.product-media { position: relative; overflow: hidden; aspect-ratio: 4/5; }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease; }
.product-card:hover .product-media img { transform: scale(1.07); }
.product-info { padding: 30px 28px; display: flex; flex-direction: column; }
.product-info .p-en { color: var(--gold); letter-spacing: 2px; font-size: 0.74rem; }
.product-info h3 { font-weight: 500; font-size: 1.5rem; margin: 8px 0 12px; }
.product-info .p-desc { color: var(--muted); font-size: 0.96rem; flex: 1; }
.product-info .p-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 20px; gap: 12px; flex-wrap: wrap; }
.product-info .p-price { color: var(--gold-2); font-family: var(--serif-en); font-size: 1.2rem; }
.product-info .p-btn {
  border: 1px solid var(--gold); color: var(--gold-2); padding: 9px 20px; font-size: 0.85rem;
  letter-spacing: 1px; transition: all 0.3s ease;
}
.product-info .p-btn:hover { background: var(--gold); color: #241c08; }

.detail-cta { background: var(--bg-soft); padding: 90px 0; text-align: center; }
.detail-cta h2 { font-weight: 500; font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin-bottom: 18px; }
.detail-cta p { color: var(--muted); max-width: 560px; margin: 0 auto 30px; }
.other-series { padding: 20px 0 10px; }
.other-series .os-links { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.other-series .os-links a {
  border: 1px solid var(--line); color: var(--muted); padding: 10px 22px; font-size: 0.9rem;
  letter-spacing: 1px; transition: all 0.3s ease;
}
.other-series .os-links a:hover { border-color: var(--gold); color: var(--gold-2); }
.other-series .os-links a.active { background: rgba(200,162,76,0.12); border-color: var(--gold); color: var(--gold-2); }

@media (max-width: 960px) {
  .product-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .product-card { grid-template-columns: 1fr; }
  .product-media { aspect-ratio: 4/3; }
}