:root{
  --bg:#141210;
  --bg2:#1d1a16;
  --gold:#c9a96a;
  --gold-light:#e3c88f;
  --text:#f2ede4;
  --muted:#a89e8d;
  --card:#221e19;
  --line:rgba(201,169,106,.22);
  --serif:'Playfair Display','Noto Serif SC',serif;
  --sans:'Inter','Noto Sans SC',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.7;-webkit-font-smoothing:antialiased}
html[lang="zh"] body{font-family:'Noto Sans SC',var(--sans)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,box-shadow .3s}
.site-header.scrolled{background:rgba(20,18,16,.94);box-shadow:0 2px 20px rgba(0,0,0,.4);backdrop-filter:blur(8px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-family:var(--serif);font-size:1.35rem;letter-spacing:.12em;font-weight:700}
.logo span{color:var(--gold)}
.main-nav{display:flex;gap:34px}
.main-nav a{font-size:.85rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);transition:color .25s}
html[lang="zh"] .main-nav a{letter-spacing:.1em}
.main-nav a:hover{color:var(--gold)}
.header-actions{display:flex;align-items:center;gap:14px}
.lang-toggle{background:transparent;border:1px solid var(--line);color:var(--gold);padding:7px 16px;border-radius:20px;cursor:pointer;font-size:.85rem;letter-spacing:.08em;transition:all .25s}
.lang-toggle:hover{background:var(--gold);color:#141210}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--text);display:block}

/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,16,.55) 0%,rgba(20,18,16,.35) 40%,rgba(20,18,16,.92) 100%)}
.hero-content{position:relative;z-index:2;max-width:1140px;padding-top:72px}
.hero-eyebrow{color:var(--gold);letter-spacing:.35em;text-transform:uppercase;font-size:.8rem;margin-bottom:22px}
html[lang="zh"] .hero-eyebrow{letter-spacing:.5em}
.hero h1{font-family:var(--serif);font-size:clamp(2.4rem,6vw,4.4rem);line-height:1.2;font-weight:600;max-width:800px;margin-bottom:24px}
html[lang="zh"] .hero h1{font-family:'Noto Serif SC',serif;letter-spacing:.06em}
.hero-sub{color:var(--muted);font-size:1.1rem;max-width:620px;margin-bottom:38px}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:15px 38px;border-radius:4px;font-size:.9rem;letter-spacing:.12em;text-transform:uppercase;font-weight:500;transition:all .3s;cursor:pointer;border:none}
html[lang="zh"] .btn{letter-spacing:.2em}
.btn-gold{background:var(--gold);color:#141210}
.btn-gold:hover{background:var(--gold-light);transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(242,237,228,.4);color:var(--text)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}

/* Stats */
.stats{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:44px 24px;gap:20px;text-align:center}
.stat-num{display:block;font-family:var(--serif);font-size:2.4rem;color:var(--gold);margin-bottom:6px}
.stat-label{color:var(--muted);font-size:.85rem;letter-spacing:.1em;text-transform:uppercase}

/* Sections */
.section{padding:110px 0}
.section-dark{background:var(--bg2)}
.section-eyebrow{color:var(--gold);letter-spacing:.3em;text-transform:uppercase;font-size:.78rem;margin-bottom:16px}
html[lang="zh"] .section-eyebrow{letter-spacing:.45em}
.section-title{font-family:var(--serif);font-size:clamp(1.9rem,4vw,2.9rem);font-weight:600;margin-bottom:16px;line-height:1.3}
html[lang="zh"] .section-title{font-family:'Noto Serif SC',serif}
.section-sub{color:var(--muted);max-width:640px;margin-bottom:56px;font-size:1.05rem}

/* Services */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.service-card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:42px 34px;transition:transform .3s,border-color .3s}
.service-card:hover{transform:translateY(-6px);border-color:var(--gold)}
.service-icon{font-size:1.9rem;color:var(--gold);margin-bottom:20px}
.service-card h3{font-family:var(--serif);font-size:1.25rem;margin-bottom:12px;font-weight:600}
html[lang="zh"] .service-card h3{font-family:'Noto Serif SC',serif}
.service-card p{color:var(--muted);font-size:.95rem}

/* Portfolio */
.portfolio-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.portfolio-item{position:relative;border-radius:10px;overflow:hidden;height:340px;cursor:pointer}
.portfolio-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.portfolio-item:hover img{transform:scale(1.06)}
.portfolio-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:28px;background:linear-gradient(0deg,rgba(10,8,6,.88),transparent)}
.portfolio-item h3{font-family:var(--serif);font-size:1.4rem;margin-bottom:4px}
html[lang="zh"] .portfolio-item h3{font-family:'Noto Serif SC',serif}
.portfolio-item p{color:var(--muted);font-size:.9rem}

/* Process */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.process-step{padding:10px 6px;border-top:2px solid var(--line);transition:border-color .3s}
.process-step:hover{border-color:var(--gold)}
.process-num{font-family:var(--serif);font-size:2.6rem;color:var(--gold);opacity:.85;display:block;margin-bottom:14px}
.process-step h3{font-size:1.1rem;margin-bottom:10px;font-family:var(--serif)}
html[lang="zh"] .process-step h3{font-family:'Noto Serif SC',serif}
.process-step p{color:var(--muted);font-size:.92rem}

/* About */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.about-grid p{color:var(--muted);margin-bottom:18px}
.about-list{list-style:none;margin-top:26px}
.about-list li{padding:12px 0 12px 34px;position:relative;border-bottom:1px solid var(--line);color:var(--text);font-size:.95rem}
.about-list li::before{content:'✓';position:absolute;left:4px;color:var(--gold);font-weight:600}
.about-img img{border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.5)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.info-item{margin-bottom:30px}
.info-label{display:block;color:var(--gold);font-size:.78rem;letter-spacing:.25em;text-transform:uppercase;margin-bottom:8px}
html[lang="zh"] .info-label{letter-spacing:.35em}
.info-item a{font-size:1.25rem;font-family:var(--serif)}
.info-item a:hover{color:var(--gold)}
.info-item span{font-size:1.05rem;color:var(--text)}
.quote-form{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:38px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.quote-form input,.quote-form select,.quote-form textarea{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:6px;color:var(--text);padding:14px 16px;font-size:.95rem;font-family:inherit;margin-bottom:16px;outline:none;transition:border-color .25s}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{border-color:var(--gold)}
.quote-form select option{background:var(--bg)}
.quote-form textarea{resize:vertical}
.quote-form .btn{width:100%}
.form-note{color:var(--muted);font-size:.82rem;margin-top:14px;text-align:center}

/* Footer */
.site-footer{background:#0e0c0a;padding:56px 0;border-top:1px solid var(--line);text-align:center}
.site-footer .logo{margin-bottom:14px;display:inline-block}
.site-footer p{color:var(--muted);font-size:.92rem}
.copyright{margin-top:10px;font-size:.82rem!important}

/* Responsive */
@media(max-width:900px){
  .services-grid{grid-template-columns:1fr 1fr}
  .process-grid{grid-template-columns:1fr 1fr;gap:34px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .portfolio-grid{grid-template-columns:1fr}
  .portfolio-item{height:280px}
}
@media(max-width:640px){
  .main-nav{position:fixed;top:72px;left:0;right:0;background:rgba(20,18,16,.97);flex-direction:column;padding:20px 24px 30px;gap:6px;display:none;border-bottom:1px solid var(--line)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex}
  .services-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:80px 0}
  .form-row{grid-template-columns:1fr}
}