:root{
  --ink:#1c1a17;
  --char:#2b2722;
  --paper:#f7f3ec;
  --paper-2:#efe8dc;
  --amber:#c8742a;
  --amber-soft:#e0974f;
  --seal:#b5341f;
  --line:#ddd2c2;
  --muted:#7a7065;
  --shadow:0 18px 40px rgba(28,26,23,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.65;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* language switch */
.zh{display:none}
body.lang-zh .en{display:none}
body.lang-zh .zh{display:inline}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(247,243,236,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1180px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}
.brand-seal{display:inline-grid;place-items:center;width:34px;height:34px;background:var(--seal);color:#fff;border-radius:6px;font-weight:800;font-size:18px;box-shadow:0 4px 10px rgba(181,52,31,.35)}
.brand-name{font-size:18px;letter-spacing:.5px}
.brand-name small{font-size:12px;color:var(--muted);font-weight:600}
.nav-links{margin-left:auto;display:flex;gap:22px;font-weight:600;font-size:15px}
.nav-links a{padding:6px 2px;position:relative}
.nav-links a.active{color:var(--seal)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--seal);transition:.25s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.lang-toggle{border:1px solid var(--ink);background:transparent;color:var(--ink);padding:6px 12px;border-radius:20px;cursor:pointer;font-weight:600;font-size:13px}
.lang-toggle:hover{background:var(--ink);color:#fff}

/* hero */
.hero{position:relative;min-height:78vh;display:grid;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:saturate(.9)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,18,15,.82),rgba(20,18,15,.35))}
.hero-content{position:relative;max-width:1180px;margin:0 auto;padding:0 22px;width:100%}
.eyebrow{letter-spacing:2px;text-transform:uppercase;font-size:13px;color:var(--amber-soft);margin-bottom:14px;font-weight:700}
.hero h1{font-size:clamp(30px,5vw,56px);line-height:1.1;font-weight:800;margin-bottom:18px}
.hero-sub{max-width:560px;font-size:17px;color:#f0e9dd;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* buttons */
.btn{display:inline-block;padding:13px 26px;border-radius:30px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer}
.btn-primary{background:var(--seal);color:#fff;box-shadow:0 10px 24px rgba(181,52,31,.35)}
.btn-primary:hover{transform:translateY(-2px);background:#9c2c19}
.btn-ghost{border:1.5px solid #fff;color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink)}

/* sections */
section{padding:72px 22px}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.section-head h2{font-size:clamp(24px,3.4vw,38px);font-weight:800;margin-bottom:10px}
.section-head p{color:var(--muted);font-size:17px}
.center{text-align:center;margin-top:38px}

/* features */
.features{background:var(--paper)}
.feature-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feature{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 22px;text-align:center;box-shadow:var(--shadow)}
.feature-icon{font-size:34px;margin-bottom:12px}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14.5px}

/* products */
.products-teaser{background:var(--paper-2)}
.product-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--shadow);transition:.25s;border:1px solid var(--line)}
.product-card:hover{transform:translateY(-6px)}
.product-img{height:230px;background-size:cover;background-position:center;background-color:var(--paper-2)}
.product-card h3{padding:18px 18px 4px;font-size:19px}
.product-card p{padding:0 18px 20px;color:var(--muted);font-size:14px}

/* story */
.story-teaser{background:var(--char);color:#f3ece0}
.story-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.story-img{height:380px;border-radius:16px;background-size:cover;background-position:center;background-color:#3a352e}
.story-text h2{font-size:clamp(26px,3.6vw,40px);margin-bottom:16px;color:#fff}
.story-text p{font-size:16.5px;color:#d8cdbb;margin-bottom:22px}

/* cta */
.cta{background:var(--seal);color:#fff;text-align:center}
.cta h2{font-size:clamp(24px,3.4vw,36px);margin-bottom:12px}
.cta p{font-size:17px;margin-bottom:24px;color:#f6e3da}

/* footer */
.footer{background:var(--ink);color:#e9e1d4;padding:54px 22px 26px}
.footer-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:26px}
.footer-brand p{color:var(--amber-soft);margin-top:8px;font-size:14px}
.footer-col h4{font-size:15px;margin-bottom:12px;color:#fff}
.footer-col a{display:block;color:#cfc5b6;font-size:14px;padding:4px 0}
.footer-col a:hover{color:#fff}
.copyright{max-width:1100px;margin:30px auto 0;padding-top:18px;border-top:1px solid #3a352e;color:#9c9384;font-size:13px;text-align:center}

/* ===== PRODUCTS PAGE ===== */
.page-hero{background:var(--char);color:#fff;text-align:center;padding:64px 22px}
.page-hero h1{font-size:clamp(28px,4vw,44px);margin-bottom:10px}
.page-hero p{color:#d8cdbb;font-size:17px}
.product-detail{max-width:1100px;margin:0 auto;padding:64px 22px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;border-bottom:1px solid var(--line)}
.product-detail:nth-child(even) .pd-img{order:2}
.pd-img{height:340px;border-radius:16px;background-size:cover;background-position:center;background-color:var(--paper-2);box-shadow:var(--shadow)}
.pd-text h2{font-size:26px;margin-bottom:10px}
.pd-text .price{color:var(--seal);font-weight:800;font-size:20px;margin-bottom:12px}
.pd-text p{color:var(--muted);margin-bottom:14px}
.pd-text ul{list-style:none;margin-bottom:18px}
.pd-text li{padding:6px 0 6px 24px;position:relative;color:var(--char)}
.pd-text li::before{content:"✓";position:absolute;left:0;color:var(--seal);font-weight:800}

/* ===== ABOUT ===== */
.about-wrap{max-width:900px;margin:0 auto;padding:64px 22px}
.about-wrap h2{font-size:28px;margin:34px 0 12px}
.about-wrap p{color:var(--muted);margin-bottom:16px;font-size:16.5px}
.about-img{height:360px;border-radius:16px;background-size:cover;background-position:center;background-color:var(--paper-2);margin:24px 0;box-shadow:var(--shadow)}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center;box-shadow:var(--shadow)}
.stat b{display:block;font-size:30px;color:var(--seal)}
.stat span{color:var(--muted);font-size:14px}

/* ===== CONTACT ===== */
.contact-wrap{max-width:760px;margin:0 auto;padding:64px 22px}
.contact-wrap h2{font-size:30px;margin-bottom:10px;text-align:center}
.contact-wrap .lead{text-align:center;color:var(--muted);margin-bottom:30px}
.form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:var(--shadow)}
.form label{display:block;font-weight:600;margin:14px 0 6px;font-size:14px}
.form input,.form textarea,.form select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:var(--paper)}
.form textarea{resize:vertical;min-height:120px}
.form .btn{width:100%;margin-top:20px;border:none}
.contact-channels{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
.channel{background:var(--paper-2);border-radius:14px;padding:20px;text-align:center}
.channel b{display:block;color:var(--seal);margin-bottom:6px}
.channel a{font-weight:600}
.note{background:#fff7ee;border:1px solid var(--amber-soft);border-radius:12px;padding:14px 16px;margin-top:22px;font-size:14px;color:#8a5a1e}

/* responsive */
@media(max-width:900px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid{grid-template-columns:1fr}
  .story-inner{grid-template-columns:1fr}
  .product-detail{grid-template-columns:1fr}
  .product-detail:nth-child(even) .pd-img{order:0}
  .footer-inner{grid-template-columns:1fr 1fr}
  .stat-row{grid-template-columns:1fr}
  .contact-channels{grid-template-columns:1fr}
  .nav-links{display:none}
}
@media(max-width:560px){
  .feature-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
}