/* ============================================================
   Azhu Store — refined jadeite jewellery
   ============================================================ */

:root {
  --bg: #faf7f1;
  --bg-soft: #f2eee6;
  --surface: #ffffff;
  --ink: #22231f;
  --ink-soft: #6d6b60;
  --jade-900: #123427;
  --jade-700: #1d523c;
  --jade-600: #2e7453;
  --jade-100: #e3ede6;
  --gold: #b3893f;
  --gold-soft: #d8c290;
  --line: #e6e0d3;
  --shadow: 0 20px 50px -30px rgba(20, 40, 30, 0.45);
  --serif: Georgia, "Times New Roman", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.no-scroll { overflow: hidden; }

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

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

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- typography ---------- */
.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
}

h1, h2, h3, .serif { font-family: var(--serif); font-weight: 500; }

.page-title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin: 14px 0 16px;
}

.lead { color: var(--ink-soft); font-size: 1.06rem; max-width: 60ch; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 30px;
  border: 1px solid var(--jade-700);
  border-radius: 999px;
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-solid { background: var(--jade-700); color: #fff; }
.btn-solid:hover { background: var(--jade-900); border-color: var(--jade-900); }

.btn-ghost { background: transparent; color: var(--jade-700); }
.btn-ghost:hover { background: var(--jade-700); color: #fff; }

.btn-light { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.6); color: #fff; }
.btn-light:hover { background: #fff; color: var(--jade-900); border-color: #fff; }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(250, 247, 241, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  padding: 12px 0;
  box-shadow: 0 1px 0 var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #6fbf95, var(--jade-700) 70%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.25);
}
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font-family: var(--serif); font-size: 1.28rem; letter-spacing: 0.16em; color: var(--ink); }
.brand-sub { font-size: 0.58rem; letter-spacing: 0.42em; text-transform: uppercase; color: var(--gold); margin-top: 3px; }

.site-nav ul { display: flex; gap: 34px; list-style: none; align-items: center; }
.site-nav a {
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  position: relative;
  padding: 6px 0;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.25s ease;
}
.site-nav a:hover::after, .site-nav a.active::after { width: 100%; }
.site-nav a.active { color: var(--jade-700); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: 0; cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); transition: 0.25s; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  color: #fff;
  background: linear-gradient(180deg, rgba(10,26,19,0.35), rgba(10,26,19,0.65)),
              url("../img/223980/223980_2.jpg") center 38% / cover no-repeat;
}
.hero-inner { padding: 120px 0 80px; max-width: 720px; }
.hero .eyebrow { color: var(--gold-soft); }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 5rem);
  line-height: 1.05;
  margin: 18px 0 22px;
  letter-spacing: 0.01em;
}
.hero p { font-size: 1.12rem; color: rgba(255,255,255,0.88); max-width: 52ch; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.hero-scroll {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  font-size: 0.68rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: rgba(255,255,255,0.75);
}

/* ---------- sections ---------- */
.section { padding: 90px 0; }
.section-tight { padding: 60px 0; }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- value strip ---------- */
.values { background: var(--jade-900); color: #fff; }
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.value-item { text-align: center; padding: 10px 6px; }
.value-item .glyph {
  font-size: 1.7rem;
  display: block;
  margin-bottom: 12px;
}
.value-item h3 { font-size: 1.02rem; font-weight: 500; margin-bottom: 6px; }
.value-item p { font-size: 0.86rem; color: rgba(255,255,255,0.66); }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-media { position: relative; }
.about-media img { border-radius: 12px; box-shadow: var(--shadow); }
.about-media::after {
  content: "";
  position: absolute; inset: 18px -18px -18px 18px;
  border: 1px solid var(--gold-soft);
  border-radius: 12px; z-index: -1;
}
.about-body h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); line-height: 1.2; margin: 14px 0 20px; }
.about-body p { color: var(--ink-soft); margin-bottom: 16px; }
.about-sign { margin-top: 26px; font-family: var(--serif); font-style: italic; color: var(--gold); font-size: 1.15rem; }

/* ---------- product grid ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px 28px;
}

.product-card {
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--surface);
  border: 0;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 1px 0 var(--line);
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }

.product-card-media { position: relative; display: block; overflow: hidden; background: var(--bg-soft); }
.product-card-media img { width: 100%; aspect-ratio: 3/4; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-card-media img { transform: scale(1.05); }
.product-card-zoom {
  position: absolute; left: 14px; bottom: 14px;
  font-size: 0.66rem; letter-spacing: 0.22em; text-transform: uppercase;
  background: rgba(255,255,255,0.9); color: var(--jade-700);
  padding: 6px 12px; border-radius: 999px;
  opacity: 0; transform: translateY(6px); transition: 0.3s ease;
}
.product-card:hover .product-card-zoom { opacity: 1; transform: translateY(0); }

.product-card-body { display: flex; flex-direction: column; padding: 16px 18px 18px; gap: 3px; }
.product-card-cat { font-size: 0.66rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); }
.product-card-name { font-family: var(--serif); font-size: 1.12rem; line-height: 1.3; }
.product-card-zh { font-size: 0.82rem; color: var(--ink-soft); }

/* ---------- filter chips ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.chip {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: 0.2s ease;
}
.chip:hover { border-color: var(--jade-600); color: var(--jade-700); }
.chip.active { background: var(--jade-700); border-color: var(--jade-700); color: #fff; }

/* ---------- services ---------- */
.services { background: var(--bg-soft); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.service-card {
  background: var(--surface);
  padding: 30px 26px;
  border-radius: 12px;
  border: 1px solid var(--line);
}
.service-card .glyph { font-size: 1.5rem; color: var(--jade-600); }
.service-card h3 { font-size: 1.05rem; margin: 14px 0 8px; }
.service-card p { font-size: 0.88rem; color: var(--ink-soft); }

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(12, 20, 16, 0.94);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.lightbox.open { display: flex; }
.lb-close {
  position: absolute; top: 18px; right: 22px;
  background: none; border: 0; color: #fff;
  font-size: 2.4rem; line-height: 1; cursor: pointer;
  opacity: 0.8;
}
.lb-close:hover { opacity: 1; }
.lb-stage { flex: 1; display: flex; align-items: center; justify-content: center; width: 100%; max-width: 1080px; }
.lb-figure { display: flex; align-items: center; gap: 40px; }
.lb-img { max-height: 72vh; max-width: min(60vw, 760px); object-fit: contain; border-radius: 8px; cursor: zoom-in; }
.lb-caption { color: #fff; max-width: 360px; }
.lb-cat { font-size: 0.7rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--gold-soft); }
.lb-name { font-size: 1.6rem; margin: 8px 0 6px; line-height: 1.25; }
.lb-zh { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-bottom: 12px; }
.lb-desc { color: rgba(255,255,255,0.82); font-size: 0.94rem; margin-bottom: 22px; }
.lb-cta { display: inline-block; padding: 11px 22px; border: 1px solid var(--gold-soft); border-radius: 999px; color: var(--gold-soft); font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; transition: 0.2s; }
.lb-cta:hover { background: var(--gold-soft); color: var(--jade-900); }

.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,0.08); border: 0; color: #fff;
  width: 52px; height: 52px; border-radius: 50%;
  font-size: 1.8rem; line-height: 1; cursor: pointer;
  transition: 0.2s;
}
.lb-nav:hover { background: rgba(255,255,255,0.2); }
.lb-prev { left: 22px; }
.lb-next { right: 22px; }

.lb-bar { width: 100%; max-width: 820px; margin-top: 18px; text-align: center; }
.lb-counter { display: block; font-size: 0.74rem; letter-spacing: 0.18em; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.lb-thumbs { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.lb-thumb { width: 58px; height: 58px; border: 2px solid transparent; border-radius: 6px; overflow: hidden; padding: 0; cursor: pointer; background: none; }
.lb-thumb img { width: 100%; height: 100%; object-fit: cover; }
.lb-thumb.active { border-color: var(--gold-soft); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 34px 30px;
  text-align: center;
  transition: 0.25s;
}
.contact-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.contact-card .glyph { font-size: 1.7rem; }
.contact-card h3 { font-size: 0.82rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); margin: 16px 0 10px; }
.contact-card p { font-size: 1.05rem; word-break: break-word; }
.contact-card .sub { font-size: 0.84rem; color: var(--ink-soft); margin-top: 6px; }

.note-card {
  background: var(--jade-900); color: #fff;
  border-radius: 12px; padding: 44px 40px;
  margin-top: 30px;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 30px; align-items: center;
}
.note-card h2 { font-size: 1.7rem; margin-bottom: 12px; }
.note-card p { color: rgba(255,255,255,0.8); }
.note-card .btn-light { justify-self: start; }

/* ---------- footer ---------- */
.site-footer { background: #141a15; color: rgba(255,255,255,0.7); padding: 60px 0 30px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { font-size: 0.88rem; margin-top: 14px; max-width: 34ch; }
.site-footer h4 { color: #fff; font-size: 0.82rem; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 16px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: rgba(255,255,255,0.7); }
.site-footer a:hover { color: var(--gold-soft); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 24px; font-size: 0.82rem; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(180deg, rgba(10,26,19,0.4), rgba(10,26,19,0.7)),
              url("../img/223979/223979_2.jpg") center 40% / cover no-repeat;
  color: #fff; padding: 150px 0 70px; text-align: center;
}
.page-hero .lead { color: rgba(255,255,255,0.85); margin: 0 auto; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .values-grid, .services-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .note-card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .lb-figure { flex-direction: column; gap: 20px; text-align: center; }
  .lb-img { max-width: 90vw; max-height: 55vh; }
  .lb-caption { max-width: 90vw; }
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(78vw, 320px);
    background: var(--bg);
    padding: 90px 32px 32px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -20px 0 60px rgba(0,0,0,0.15);
  }
  .site-nav.open { transform: translateX(0); }
  .site-nav ul { flex-direction: column; gap: 24px; align-items: flex-start; }
  .site-nav a { font-size: 1rem; }
  .hero { min-height: 82vh; }
  .values-grid, .services-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; gap: 22px; }
  .section { padding: 64px 0; }
  .lb-prev { left: 8px; }
  .lb-next { right: 8px; }
}