/* ============================================================
   Shanghai Yuyou Arts Co., Ltd. — yuyouarts.com
   European bronze sculpture manufacturer
   ============================================================ */

:root {
  --gold: #c9a96a;
  --gold-deep: #a8873f;
  --bronze: #6b5a45;
  --ink: #2a2320;
  --ink-soft: #57493a;
  --cream: #f7f2e9;
  --paper: #fcfaf5;
  --line: #e3d9c6;
  --serif: "Playfair Display", "Times New Roman", serif;
  --sans: "Jost", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-weight: 300;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

.container { width: min(1180px, 92%); margin: 0 auto; }

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

/* ---------- Top bar ---------- */
.topbar {
  background: var(--ink);
  color: #cfc4b2;
  font-size: .78rem;
  letter-spacing: .08em;
}
.topbar .container {
  display: flex; justify-content: space-between; align-items: center;
  padding: .45rem 0;
}
.topbar a { color: #e8ddc8; transition: color .2s; }
.topbar a:hover { color: var(--gold); }
.topbar .sep { margin: 0 .7em; color: #5a4d3e; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(252, 250, 245, .96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex; justify-content: space-between; align-items: center;
  padding: .9rem 0;
}
.brand { display: flex; align-items: center; gap: .8rem; }
.brand-mark {
  width: 44px; height: 44px; border: 1px solid var(--gold);
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 1.15rem; color: var(--gold-deep);
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 3px; border: 1px solid var(--line);
}
.brand-text .name {
  font-family: var(--serif); font-size: 1.12rem; letter-spacing: .02em; color: var(--ink);
  line-height: 1.2;
}
.brand-text .tag {
  font-size: .66rem; letter-spacing: .28em; text-transform: uppercase; color: var(--bronze);
}
.main-nav { display: flex; gap: 2.2rem; }
.main-nav a {
  font-size: .82rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-soft); padding: .3rem 0; position: relative;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 0;
  background: var(--gold); transition: width .3s;
}
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--gold-deep); }

/* ---------- Hero (home, split) ---------- */
.hero { background: var(--cream); overflow: hidden; }
.hero .container {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem;
  align-items: center; min-height: calc(100vh - 110px); padding: 3.5rem 0;
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: .9rem;
  font-size: .74rem; letter-spacing: .32em; text-transform: uppercase; color: var(--gold-deep);
  margin-bottom: 1.6rem;
}
.hero-kicker::before, .hero-kicker::after { content: ""; width: 42px; height: 1px; background: var(--gold); }
.hero h1 { font-size: clamp(2.4rem, 4.6vw, 3.9rem); line-height: 1.12; color: var(--ink); }
.hero h1 em { font-style: italic; color: var(--gold-deep); }
.hero p.lead { margin: 1.6rem 0 2.4rem; font-size: 1.06rem; color: var(--ink-soft); max-width: 34rem; }
.btn {
  display: inline-block; padding: .85rem 2.1rem;
  font-size: .8rem; letter-spacing: .22em; text-transform: uppercase;
  border: 1px solid var(--ink); color: var(--ink);
  transition: all .3s; cursor: pointer; background: transparent;
}
.btn:hover { background: var(--ink); color: var(--cream); }
.btn.gold { border-color: var(--gold-deep); color: var(--gold-deep); }
.btn.gold:hover { background: var(--gold-deep); color: #fff; }
.btn + .btn { margin-left: .9rem; }
.hero-figure { position: relative; }
.hero-figure .frame {
  position: relative; border: 1px solid var(--line);
  padding: 14px; background: #fff;
}
.hero-figure .frame::before, .hero-figure .frame::after {
  content: ""; position: absolute; width: 46px; height: 46px;
}
.hero-figure .frame::before { top: -1px; left: -1px; border-top: 2px solid var(--gold); border-left: 2px solid var(--gold); }
.hero-figure .frame::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--gold); border-right: 2px solid var(--gold); }
.hero-figure img { width: 100%; height: 560px; object-fit: contain; }
.hero-figure figcaption {
  position: absolute; right: -12px; bottom: 22px;
  background: var(--ink); color: #d9cdb8;
  font-size: .68rem; letter-spacing: .2em; text-transform: uppercase;
  padding: .55rem 1.1rem;
}

/* ---------- Section basics ---------- */
section.block { padding: 5.5rem 0; }
section.block.alt { background: var(--cream); }
.sec-head { text-align: center; max-width: 680px; margin: 0 auto 3.6rem; }
.sec-head .kicker {
  font-size: .72rem; letter-spacing: .32em; text-transform: uppercase; color: var(--gold-deep);
  display: block; margin-bottom: .9rem;
}
.sec-head h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); line-height: 1.2; }
.sec-head .rule {
  width: 64px; height: 1px; background: var(--gold); margin: 1.3rem auto 0; position: relative;
}
.sec-head .rule::after {
  content: ""; position: absolute; left: 50%; top: -3px; width: 7px; height: 7px;
  background: var(--gold); transform: translateX(-50%) rotate(45deg);
}
.sec-head p { margin-top: 1.2rem; color: var(--ink-soft); font-size: .98rem; }

/* ---------- Advantages ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; }
.adv {
  border: 1px solid var(--line); background: #fff; padding: 2.3rem 1.7rem;
  text-align: center; transition: transform .3s, box-shadow .3s;
}
.adv:hover { transform: translateY(-5px); box-shadow: 0 18px 40px -22px rgba(90, 70, 40, .45); }
.adv .num { font-family: var(--serif); font-size: 1rem; color: var(--gold); letter-spacing: .1em; }
.adv h3 { font-size: 1.18rem; margin: .7rem 0 .8rem; }
.adv p { font-size: .88rem; color: var(--ink-soft); }

/* ---------- Process ---------- */
.proc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.proc {
  background: #fff; border: 1px solid var(--line); overflow: hidden;
  display: flex; flex-direction: column;
}
.proc figure { position: relative; overflow: hidden; aspect-ratio: 16 / 7; }
.proc figure img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.proc:hover figure img { transform: scale(1.05); }
.proc .step {
  position: absolute; top: 12px; left: 12px;
  background: rgba(42, 35, 32, .88); color: var(--gold);
  font-family: var(--serif); font-size: .82rem; letter-spacing: .12em;
  padding: .3rem .8rem;
}
.proc-body { padding: 1.5rem 1.6rem 1.8rem; }
.proc-body h3 { font-size: 1.15rem; margin-bottom: .6rem; }
.proc-body p { font-size: .88rem; color: var(--ink-soft); }
.proc-note {
  margin-top: 2.6rem; text-align: center; font-size: .9rem; color: var(--ink-soft);
  font-style: italic; font-family: var(--serif);
}

/* ---------- Featured grid (home) ---------- */
.feat-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem;
}
.pcard {
  background: #fff; border: 1px solid var(--line);
  cursor: pointer; overflow: hidden; position: relative;
  transition: transform .3s, box-shadow .3s;
}
.pcard:hover { transform: translateY(-5px); box-shadow: 0 20px 44px -24px rgba(90, 70, 40, .5); }
.pcard .ph { overflow: hidden; aspect-ratio: 3/4; background: var(--cream); }
.pcard .ph img { width: 100%; height: 100%; object-fit: contain; transition: transform .6s; }
.pcard:hover .ph img { transform: scale(1.06); }
.pcard .meta { padding: .9rem 1rem 1.05rem; text-align: center; }
.pcard .code { font-family: var(--serif); font-size: 1.02rem; letter-spacing: .06em; }
.pcard .cat { font-size: .7rem; letter-spacing: .24em; text-transform: uppercase; color: var(--bronze); margin-top: .2rem; }
.center-cta { text-align: center; margin-top: 3rem; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: var(--cream); text-align: center; padding: 4.5rem 0 4rem;
  border-bottom: 1px solid var(--line);
}
.page-hero .kicker {
  font-size: .72rem; letter-spacing: .32em; text-transform: uppercase; color: var(--gold-deep);
  display: block; margin-bottom: 1rem;
}
.page-hero h1 { font-size: clamp(2rem, 3.6vw, 3rem); }
.page-hero p { margin: 1.1rem auto 0; max-width: 40rem; color: var(--ink-soft); }

/* ---------- Products toolbar ---------- */
.toolbar {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
  margin-bottom: 2rem;
}
.toolbar .count { font-size: .85rem; color: var(--ink-soft); letter-spacing: .06em; }
.toolbar .count b { font-family: var(--serif); color: var(--gold-deep); font-size: 1.05rem; }
.search-wrap { position: relative; }
.search-wrap input {
  font-family: var(--sans); font-weight: 300; font-size: .9rem;
  padding: .65rem 2.4rem .65rem 1.1rem; width: 250px;
  border: 1px solid var(--line); background: #fff; color: var(--ink); outline: none;
}
.search-wrap input:focus { border-color: var(--gold); }
.search-wrap .icon {
  position: absolute; right: .9rem; top: 50%; transform: translateY(-50%);
  color: var(--bronze); pointer-events: none; font-size: .9rem;
}
.empty-note { text-align: center; padding: 3rem 0; color: var(--ink-soft); font-style: italic; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(26, 21, 18, .93);
  display: none; align-items: center; justify-content: center;
  padding: 3rem 1rem;
}
.lightbox.open { display: flex; }
.lightbox img { max-height: 82vh; max-width: min(760px, 90vw); box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.lb-close {
  position: absolute; top: 1.4rem; right: 1.8rem; font-size: 2rem; color: #d9cdb8;
  background: none; border: none; cursor: pointer; line-height: 1; font-family: var(--serif);
}
.lb-close:hover { color: var(--gold); }
.lb-code {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  color: #d9cdb8; font-family: var(--serif); letter-spacing: .18em; font-size: 1.05rem;
}
.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: none; border: 1px solid #6a5c48; color: #d9cdb8; font-size: 1.4rem;
  width: 46px; height: 46px; cursor: pointer; transition: all .25s;
}
.lb-nav:hover { border-color: var(--gold); color: var(--gold); }
.lb-prev { left: 1.4rem; }
.lb-next { right: 1.4rem; }

/* ---------- About page ---------- */
.about-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 3.4rem; align-items: center; }
.about-cols + .about-cols { margin-top: 4.5rem; }
.about-cols .fig { border: 1px solid var(--line); padding: 12px; background: #fff; }
.about-cols .fig img { width: 100%; height: 430px; object-fit: cover; }
.about-cols .fig.fig-contain img { height: 430px; object-fit: contain; background: #fff; }
.about-cols h3 { font-size: 1.6rem; margin-bottom: 1rem; }
.about-cols p { color: var(--ink-soft); margin-bottom: 1rem; font-size: .95rem; }
.stats-band { background: var(--ink); color: var(--cream); padding: 3.6rem 0; }
.stats-band .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; text-align: center; }
.stats-band .stat .n { font-family: var(--serif); font-size: 2.3rem; color: var(--gold); }
.stats-band .stat .l { font-size: .74rem; letter-spacing: .22em; text-transform: uppercase; color: #b7a98e; margin-top: .4rem; }

/* ---------- Services ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.svc { border: 1px solid var(--line); background: #fff; padding: 2.2rem 1.9rem; }
.svc .mark {
  font-family: var(--serif); color: var(--gold); font-size: 1.5rem; margin-bottom: .8rem;
}
.svc h3 { font-size: 1.2rem; margin-bottom: .7rem; }
.svc p { font-size: .89rem; color: var(--ink-soft); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-bottom: 4rem; }
.ccard {
  border: 1px solid var(--line); background: #fff; text-align: center; padding: 2.6rem 1.8rem;
  transition: transform .3s, box-shadow .3s;
}
.ccard:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(90,70,40,.45); }
.ccard .mark { font-family: var(--serif); font-size: 1.35rem; color: var(--gold); margin-bottom: .9rem; }
.ccard h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.ccard a { color: var(--ink-soft); font-size: .95rem; display: inline-block; margin: .2rem 0; transition: color .2s; }
.ccard a:hover { color: var(--gold-deep); }
.ccard small { display: block; color: var(--bronze); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; margin-top: .4rem; }
.contact-note {
  max-width: 640px; margin: 0 auto; text-align: center;
  border: 1px solid var(--line); background: var(--cream); padding: 2.6rem 2.4rem;
}
.contact-note h3 { font-size: 1.4rem; margin-bottom: .8rem; }
.contact-note p { color: var(--ink-soft); font-size: .93rem; margin-bottom: 1.6rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--ink); color: var(--cream); text-align: center; padding: 4.6rem 0; }
.cta-band h2 { font-size: clamp(1.6rem, 2.8vw, 2.3rem); color: #f0e7d4; }
.cta-band p { color: #b7a98e; margin: .9rem 0 2rem; font-size: .95rem; }

/* ---------- Footer ---------- */
.site-footer { background: #221c19; color: #a3947d; padding: 3.6rem 0 2.2rem; font-size: .85rem; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.6rem; }
.site-footer h4 {
  font-family: var(--serif); color: #e8ddc8; font-weight: 500; font-size: 1rem; margin-bottom: 1rem;
}
.site-footer .brand-text .name { color: #e8ddc8; }
.foot-links a { display: block; padding: .18rem 0; color: #a3947d; transition: color .2s; }
.foot-links a:hover { color: var(--gold); }
.foot-bottom {
  border-top: 1px solid #3a3129; padding-top: 1.6rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .8rem;
  font-size: .76rem; color: #7a6c58;
}

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: repeat(3, 1fr); }
  .proc-grid, .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-band .container { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
}
@media (max-width: 760px) {
  .topbar { display: none; }
  .site-header .container { flex-wrap: wrap; }
  .main-nav { gap: 1.2rem; width: 100%; justify-content: center; padding-top: .6rem; }
  .main-nav a { font-size: .72rem; letter-spacing: .12em; }
  .hero .container { grid-template-columns: 1fr; min-height: 0; padding: 2.6rem 0; }
  .hero-figure img { height: 420px; }
  section.block { padding: 4rem 0; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .proc-grid, .svc-grid, .about-cols, .contact-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .btn + .btn { margin-left: .5rem; margin-top: .6rem; }
  .search-wrap input { width: 100%; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .lightbox { padding: 2.4rem .4rem; }
  .lb-nav { width: 38px; height: 38px; }
}
@media (max-width: 480px) {
  .feat-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
}