/* White Dagoba — 高端水晶艺术品牌官网 样式 */
/* 设计系统：宣纸白 + 墨黑 + 琥珀金，思源宋体 + Cormorant Garamond */

:root {
  --paper: #F7F6F3;        /* 宣纸白 - 主背景 */
  --ink: #1C1B19;          /* 墨黑 - 主文字 */
  --gold: #B9985B;         /* 琥珀金 - 强调/光 */
  --gold-light: #D8C9A3;   /* 浅金 */
  --mist: #A9A49B;         /* 雾灰 - 次级文字 */
  --line: #E3DFD6;         /* 细线 */
  --white: #FFFFFF;

  --font-display: 'Cormorant Garamond', 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --container: 1280px;
  --space-section: 7.5rem;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 2.5rem; }

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(247, 246, 243, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(28,27,25,.06); }
.nav-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 2.5rem;
  display: flex; align-items: center; justify-content: space-between; height: 76px;
}
.brand { font-family: var(--font-display); font-size: 1.45rem; letter-spacing: .12em; font-weight: 600; }
.brand small { display: block; font-size: .62rem; letter-spacing: .42em; color: var(--mist); font-family: var(--font-body); font-weight: 400; text-transform: uppercase; }
.nav-links { display: flex; gap: 2.6rem; align-items: center; }
.nav-links a { font-size: .86rem; letter-spacing: .14em; color: var(--ink); position: relative; padding: .4rem 0; }
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 1px; background: var(--ink); transition: width .35s;
}
.nav-links a:hover::after { width: 100%; }
.lang-toggle { border: 1px solid var(--line); padding: .3rem .9rem; border-radius: 2rem; font-size: .76rem; letter-spacing: .1em; cursor: pointer; background: transparent; transition: all .3s; }
.lang-toggle:hover { border-color: var(--ink); }
.nav-burger { display: none; background: none; border: none; cursor: pointer; width: 28px; height: 20px; position: relative; }
.nav-burger span { position: absolute; left: 0; width: 100%; height: 1.5px; background: var(--ink); transition: all .3s; }
.nav-burger span:nth-child(1) { top: 0; }
.nav-burger span:nth-child(2) { top: 9px; }
.nav-burger span:nth-child(3) { top: 18px; }
.nav-burger.open span:nth-child(1) { top: 9px; transform: rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { top: 9px; transform: rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  min-height: 92vh; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding-top: 76px;
}
.hero-media {
  position: absolute; inset: 0; z-index: 0;
}
.hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: .5; }
.hero-content { position: relative; z-index: 2; text-align: center; padding: 0 2rem; max-width: 820px; }
.hero-eyebrow { font-size: .78rem; letter-spacing: .5em; text-transform: uppercase; color: var(--gold); margin-bottom: 1.6rem; }
.hero-title {
  font-family: var(--font-display); font-size: clamp(2.8rem, 7vw, 5.6rem);
  line-height: 1.12; font-weight: 500; letter-spacing: .06em; margin-bottom: 1.4rem;
}
.hero-title em { font-style: italic; color: var(--gold); }
.hero-sub { font-size: .98rem; color: var(--ink); opacity: .75; max-width: 480px; margin: 0 auto 2.4rem; letter-spacing: .08em; line-height: 2; }
.hero-cta {
  display: inline-block; border: 1px solid var(--ink); padding: .85rem 2.6rem; font-size: .86rem; letter-spacing: .24em;
  transition: all .4s; background: transparent; cursor: pointer;
}
.hero-cta:hover { background: var(--ink); color: var(--paper); }
.hero-scroll { position: absolute; bottom: 2.4rem; left: 50%; transform: translateX(-50%); font-size: .7rem; letter-spacing: .3em; color: var(--mist); display: flex; flex-direction: column; align-items: center; gap: .5rem; z-index: 2; }
.hero-scroll::after { content: ''; width: 1px; height: 42px; background: var(--mist); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: .3; } 50% { opacity: 1; } }

/* ===== 通用区块 ===== */
.section { padding: var(--section-pad, 6.5rem) 0; }
.section-head { text-align: center; margin-bottom: 4rem; }
.section-eyebrow { font-size: .72rem; letter-spacing: .5em; text-transform: uppercase; color: var(--gold); margin-bottom: 1rem; }
.section-title { font-family: var(--font-display); font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 500; letter-spacing: .1em; }
.section-title-cn { display: block; font-size: .9rem; color: var(--mist); letter-spacing: .34em; margin-top: .9rem; font-weight: 400; }
.section-link { display: inline-block; margin-top: 2rem; font-size: .8rem; letter-spacing: .22em; border-bottom: 1px solid var(--ink); padding-bottom: .4rem; transition: all .3s; }
.section-link:hover { color: var(--gold); border-color: var(--gold); }

/* ===== 分类导航 ===== */
.cat-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.cat-strip-inner { display: flex; justify-content: center; gap: 3.2rem; padding: 1.6rem 0; flex-wrap: wrap; }
.cat-strip-inner a { font-family: var(--font-display); font-size: 1.06rem; letter-spacing: .14em; position: relative; color: var(--ink); }
.cat-strip-inner a span { display: block; font-family: var(--font-body); font-size: .66rem; letter-spacing: .3em; color: var(--mist); margin-top: .2rem; }
.cat-strip-inner a:hover { color: var(--gold); }
.cat-strip-inner .filter-btn { display: inline-block; text-align: center; }
.cat-strip-inner .filter-btn.active { color: var(--gold); }
.cat-strip-inner .filter-btn.active span { color: var(--gold); }

/* ===== 产品网格 ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.6rem; }
.product-card { cursor: pointer; }
.product-media { position: relative; overflow: hidden; background: var(--white); aspect-ratio: 1; }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s cubic-bezier(.19,1,.22,1); }
.product-card:hover .product-media img { transform: scale(1.05); }
.product-media::after {
  content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,.12) 0%, transparent 50%);
  opacity: 0; transition: opacity .6s;
}
.product-card:hover .product-media::after { opacity: 1; }
.product-info { text-align: center; padding-top: 1.2rem; }
.product-name { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: .08em; margin-bottom: .3rem; }
.product-series { font-size: .68rem; letter-spacing: .3em; text-transform: uppercase; color: var(--mist); margin-bottom: .5rem; }
.product-price { font-size: .86rem; letter-spacing: .06em; color: var(--gold); }

/* ===== 品牌故事 ===== */
.story { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.story-media { position: relative; }
.story-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/5; }
.story-media::before { content: ''; position: absolute; inset: 1.4rem -1.4rem -1.4rem 1.4rem; border: 1px solid var(--line); z-index: -1; }
.story-text .section-eyebrow { text-align: left; }
.story-text h3 { font-family: var(--font-display); font-size: 2rem; font-weight: 500; letter-spacing: .06em; margin-bottom: 1.4rem; }
.story-text p { color: var(--ink); opacity: .82; margin-bottom: 1.2rem; font-size: .95rem; letter-spacing: .04em; }
.story-values { display: flex; gap: 2.2rem; margin-top: 2.2rem; border-top: 1px solid var(--line); padding-top: 1.6rem; }
.story-value b { font-family: var(--font-display); font-size: 1.5rem; font-weight: 500; color: var(--gold); display: block; }
.story-value span { font-size: .74rem; letter-spacing: .14em; color: var(--mist); }

/* ===== 匠心工艺 ===== */
.craft-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.craft-item { text-align: center; padding: 2rem 1.2rem; border: 1px solid var(--line); transition: all .4s; background: var(--white); }
.craft-item:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(28,27,25,.06); border-color: var(--gold-light); }
.craft-num { font-family: var(--font-display); font-size: 2.4rem; color: var(--gold); opacity: .85; line-height: 1; }
.craft-item h4 { font-size: .92rem; letter-spacing: .16em; margin: 1.2rem 0 .8rem; }
.craft-item p { font-size: .8rem; color: var(--mist); line-height: 1.8; }

/* ===== 系列精选 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }
.feature-item { position: relative; overflow: hidden; aspect-ratio: 3/4; }
.feature-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s cubic-bezier(.19,1,.22,1); }
.feature-item:hover img { transform: scale(1.05); }
.feature-item .feature-label { position: absolute; left: 1.4rem; bottom: 1.2rem; color: var(--white); z-index: 2; }
.feature-item .feature-label b { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: .1em; font-weight: 500; display: block; text-shadow: 0 1px 12px rgba(0,0,0,.4); }
.feature-item .feature-label span { font-size: .66rem; letter-spacing: .3em; opacity: .9; }
.feature-item::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.32) 0%, transparent 40%); }

/* ===== 邮件订阅 ===== */
.newsletter { background: var(--ink); color: var(--paper); text-align: center; padding: 5rem 2rem; }
.newsletter h3 { font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 400; letter-spacing: .12em; margin-bottom: 1.2rem; }
.newsletter p { font-size: .84rem; letter-spacing: .1em; color: var(--gold-light); margin-bottom: 2.4rem; }
.newsletter form { display: flex; max-width: 420px; margin: 0 auto; border-bottom: 1px solid var(--paper); }
.newsletter input { flex: 1; background: transparent; border: none; outline: none; color: var(--paper); font-size: .9rem; padding: .9rem 0; letter-spacing: .06em; }
.newsletter input::placeholder { color: rgba(247,246,243,.4); }
.newsletter button { background: none; border: none; color: var(--paper); font-size: .8rem; letter-spacing: .2em; cursor: pointer; padding: .9rem 0 .9rem 1rem; }
.newsletter button:hover { color: var(--gold-light); }

/* ===== 页脚 ===== */
.site-footer { background: var(--ink); color: rgba(247,246,243,.75); }
.footer-inner { max-width: var(--container); margin: 0 auto; padding: 4rem 2.5rem 2.5rem; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid rgba(247,246,243,.12); }
.footer-brand { font-family: var(--font-display); font-size: 1.4rem; letter-spacing: .12em; color: var(--paper); }
.footer-brand small { display: block; font-size: .62rem; letter-spacing: .4em; color: var(--gold-light); margin-top: .4rem; font-family: var(--font-body); font-weight: 400; }
.footer-col h5 { font-size: .76rem; letter-spacing: .24em; text-transform: uppercase; color: var(--gold-light); margin-bottom: 1.2rem; }
.footer-col a { display: block; font-size: .84rem; padding: .3rem 0; color: rgba(247,246,243,.65); transition: color .3s; }
.footer-col a:hover { color: var(--paper); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; font-size: .74rem; color: rgba(247,246,243,.4); letter-spacing: .08em; }
.footer-beian { text-align: center; padding-top: 1.2rem; font-size: .72rem; letter-spacing: .06em; }
.footer-beian a { color: rgba(247,246,243,.4); transition: color .3s; }
.footer-beian a:hover { color: var(--gold-light); }

/* ===== 页面横幅 ===== */
.page-hero { padding: 11rem 0 4.5rem; text-align: center; background: var(--paper); }
.page-hero .section-eyebrow { margin-bottom: 1.2rem; }
.page-hero h1 { font-family: var(--font-display); font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 500; letter-spacing: .12em; }
.page-hero p { color: var(--mist); font-size: .9rem; letter-spacing: .1em; margin-top: 1rem; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .craft-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .story { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  :root { --section-pad: 4.5rem; }
  .container { padding: 0 1.4rem; }
  .nav-links { display: none; position: absolute; top: 76px; left: 0; right: 0; background: var(--paper); flex-direction: column; padding: 2rem; gap: 1.6rem; border-bottom: 1px solid var(--line); }
  .nav-links.open { display: flex; }
  .nav-burger { display: block; }
  .product-grid { grid-template-columns: 1fr 1fr; gap: 1.4rem; }
  .craft-grid, .feature-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: 80vh; }
  .cat-strip-inner { gap: 1.6rem; }
  .footer-top { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ===== 通用按钮 ===== */
.btn-solid { background: var(--ink); color: var(--paper); border: 1px solid var(--ink); padding: .85rem 2.4rem; font-size: .82rem; letter-spacing: .2em; transition: all .4s; cursor: pointer; font-family: var(--font-body); }
.btn-solid:hover { background: transparent; color: var(--ink); }
.btn-outline { border: 1px solid var(--ink); padding: .85rem 2.4rem; font-size: .82rem; letter-spacing: .2em; transition: all .4s; cursor: pointer; background: transparent; font-family: var(--font-body); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }

/* 淡入动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: none; }