:root {
  --color-bg: #faf6ef;
  --color-surface: #ffffff;
  --color-ink: #2a211c;
  --color-muted: #8a7d72;
  --color-primary: #7a1f2b;
  --color-primary-dark: #5e1620;
  --color-gold: #b08d4f;
  --color-line: #e8ddcd;
  --radius: 4px;
  --max: 1180px;
}

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

html { scroll-behavior: smooth; background: var(--color-bg); }

body {
  font-family: "Noto Sans SC", sans-serif;
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.7;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, .brand-text strong {
  font-family: "Noto Serif SC", serif;
  font-weight: 600;
  line-height: 1.35;
}

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

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

/* 按钮 */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 15px;
  letter-spacing: 1px;
  border-radius: var(--radius);
  transition: all .25s ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-ghost {
  border-color: currentColor;
  color: var(--color-primary);
  background: transparent;
}
.btn-ghost:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* 顶部导航 */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(250, 246, 239, .95);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--color-line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary);
  color: #fff;
  font-family: "Noto Serif SC", serif;
  font-size: 22px;
  border-radius: var(--radius);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 18px; color: var(--color-ink); }
.brand-text em { font-size: 12px; color: var(--color-muted); font-style: normal; letter-spacing: 3px; }

.scrolled .brand-text strong { color: var(--color-ink); }

.nav-links { display: flex; gap: 30px; }
.nav-links a {
  font-size: 15px;
  color: var(--color-ink);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--color-primary);
  transition: width .25s ease;
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a:hover::after { width: 100%; }

/* 导航首屏处反白 */
.site-header:not(.scrolled) .nav-links a,
.site-header:not(.scrolled) .brand-text strong { color: #fff; }
.site-header:not(.scrolled) .brand-text em { color: rgba(255,255,255,.8); }

.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(--color-ink);
  transition: .3s;
}
.site-header:not(.scrolled) .nav-toggle span { background: #fff; }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: #fff;
}
.hero-media { position: absolute; inset: 0; }
  .hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }
  .hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(40,20,15,.82) 0%, rgba(40,20,15,.62) 50%, rgba(40,20,15,.42) 100%);
  }
.hero-content { position: relative; padding-top: 90px; padding-bottom: 60px; max-width: 720px; }
.hero-eyebrow {
  letter-spacing: 6px;
  font-size: 13px;
  color: var(--color-gold);
  margin-bottom: 22px;
}
.hero-title { font-size: clamp(32px, 5vw, 56px); margin-bottom: 24px; text-wrap: balance; }
.hero-sub { font-size: clamp(16px, 2vw, 20px); margin-bottom: 18px; font-weight: 400; }
.hero-intro { font-size: 15px; color: rgba(255,255,255,.85); margin-bottom: 36px; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions .btn-ghost { color: #fff; border-color: rgba(255,255,255,.7); }
.hero-actions .btn-ghost:hover { background: #fff; color: var(--color-primary); border-color: #fff; }

/* 通用 section */
.section { padding: 96px 0; }
.section-eyebrow {
  letter-spacing: 4px;
  font-size: 40px;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.section-title { font-size: clamp(26px, 3.6vw, 20px); color: var(--color-ink); text-wrap: balance; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }

/* 关于我们 */
.about { background: var(--color-surface); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.about-media img,
.about-media .about-video {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
  background: var(--color-ink);
}
.about-text > p { color: var(--color-muted); margin-top: 20px; }
.about-text .section-title { margin-bottom: 8px; }
.about-points { list-style: none; margin: 28px 0; display: grid; gap: 18px; }
.about-points li {
  display: flex; flex-direction: column;
  padding-left: 18px;
  border-left: 2px solid var(--color-gold);
}
.about-points strong { font-family: "Noto Serif SC", serif; color: var(--color-primary); font-size: 16px; }
.about-points span { color: var(--color-muted); font-size: 14px; }
.about-quote {
  font-family: "Noto Serif SC", serif;
  font-size: 18px;
  color: var(--color-ink);
  border-top: 1px solid var(--color-line);
  margin-top: 28px;
  padding-top: 24px;
}

/* 产品中心 */

.products { background: var(--color-surface); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(42,33,28,.12); }
.product-img { overflow: hidden; }
.product-img img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform .5s ease;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-body { padding: 22px; }
.product-body h3 { font-size: 19px; margin-bottom: 10px; color: var(--color-ink); }
.product-body p { font-size: 14px; color: var(--color-muted); margin-bottom: 16px; }
.product-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-primary);
  background: rgba(122,31,43,.07);
  padding: 6px 12px;
  border-radius: var(--radius);
}

/* 四大核心优势 */
.advantages { background: var(--color-bg); }
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-gold);
  border-radius: var(--radius);
  padding: 40px 26px 32px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(42, 33, 28, 0.12);
}
.advantage-num {
  font-family: "Noto Serif SC", serif;
  font-size: 40px;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.22;
  display: block;
  margin-bottom: 16px;
}
.advantage-card h3 {
  font-family: "Noto Serif SC", serif;
  font-size: 20px;
  color: var(--color-primary);
  margin-bottom: 14px;
}
.advantage-card p { font-size: 14px; color: var(--color-muted); line-height: 1.7; }

/* 服务承诺 */
.promise { background: var(--color-bg); }
.promise-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}
.promise-item {
  text-align: center;
  padding: 32px 18px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: background .3s ease, color .3s ease;
}
.promise-item:hover { background: var(--color-primary); }
.promise-item:hover .promise-num { color: var(--color-gold); }
.promise-item:hover h3, .promise-item:hover p { color: #fff; }
.promise-num {
  font-family: "Noto Serif SC", serif;
  font-size: 30px;
  color: var(--color-gold);
  display: block;
  margin-bottom: 12px;
}
.promise-item h3 { font-size: 17px; margin-bottom: 8px; color: var(--color-ink); }
.promise-item p { font-size: 13px; color: var(--color-muted); }

/* 手工工序图集 */
.craft-block { margin-top: 56px; }
.craft-caption {
  text-align: center;
  font-family: "Noto Serif SC", serif;
  font-size: 16px;
  color: var(--color-primary);
  margin-bottom: 24px;
}
.craft-caption::before,
.craft-caption::after {
  content: "";
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--color-gold);
  vertical-align: middle;
  margin: 0 14px;
}
.craft-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.craft-photo {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
}
.craft-photo img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.craft-photo:hover img { transform: scale(1.06); }

/* 为什么选我们 */
.why { position: relative; padding: 0; color: #fff; }
.why-media { position: absolute; inset: 0; }
.why-media img { width: 100%; height: 100%; object-fit: cover; }
.why::after { content: ""; position: absolute; inset: 0; background: rgba(40,20,15,.55); }
.why-inner { position: relative; z-index: 2; padding: 110px 24px; display: flex; justify-content: flex-end; }
.why-card {
  background: rgba(94,22,32,.9);
  padding: 48px;
  border-radius: var(--radius);
  max-width: 520px;
}
.why-card .section-eyebrow { color: var(--color-gold); }
.why-card .section-title { color: #fff; margin-bottom: 24px; }
.why-list { list-style: none; margin-bottom: 32px; display: grid; gap: 14px; }
.why-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  color: rgba(255,255,255,.92);
}
.why-list li::before {
  content: "❖";
  position: absolute; left: 0;
  color: var(--color-gold);
}

/* 联系我们 */
.contact { background: var(--color-surface); }
.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: stretch;
}
.contact-info { margin-top: 28px; display: grid; gap: 16px; }
.contact-info > div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-line);
}
.contact-info dt { color: var(--color-primary); font-weight: 500; }
.contact-info dd { color: var(--color-ink); }
.contact-cta {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.contact-cta h3 { font-size: 26px; margin-bottom: 14px; color: #fff; }
.contact-cta p { color: rgba(255,255,255,.85); margin-bottom: 28px; }
.contact-cta .btn-ghost { color: #fff; border-color: rgba(255,255,255,.7); align-self: flex-start; }
.contact-cta .btn-ghost:hover { background: #fff; color: var(--color-primary); border-color: #fff; }

/* 页脚 */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,.8);
  text-align: center;
  padding: 36px 0;
}
.site-footer .footer-sub { font-size: 13px; color: rgba(255,255,255,.5); margin-top: 8px; }

/* 入场动画 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* 响应式 */
@media (max-width: 960px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .promise-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .craft-gallery { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .why-inner { justify-content: center; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .nav-links {
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: rgba(250,246,239,.98);
    backdrop-filter: blur(8px);
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 24px;
    transform: translateY(-120%);
    transition: transform .3s ease;
    box-shadow: 0 12px 24px rgba(0,0,0,.08);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 0; border-bottom: 1px solid var(--color-line); color: var(--color-ink) !important; }
  .site-header:not(.scrolled) .nav-links a { color: var(--color-ink) !important; }
  .nav-toggle { display: flex; }
  .product-grid { grid-template-columns: 1fr; }
  .promise-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .why-card, .contact-cta, .contact-info > div { padding-left: 0; }
  .why-card { padding: 32px 24px; }
  .contact-cta { padding: 32px 24px; }
}