/* ============================================================
   佛珠独立站 — 主样式表
   禅意 · 温润 · 东方美学
   ============================================================ */

:root {
  /* 配色 */
  --paper:        #f7f1e6;   /* 宣纸米白 */
  --paper-deep:   #efe6d3;   /* 深一档纸色 */
  --card:         #fdfaf4;   /* 卡片底 */
  --ink:          #2b221c;   /* 墨色文字 */
  --ink-soft:     #6b5d4f;   /* 次级文字 */
  --ink-faint:    #9a8d7e;   /* 更淡文字 */
  --cinnabar:     #a53a2b;   /* 朱砂红（主色） */
  --cinnabar-dark:#7e2a1e;   /* 深朱砂 */
  --gold:         #c09a55;   /* 鎏金 */
  --gold-light:   #dcc08a;   /* 浅金 */
  --jade:         #4a7a6a;   /* 青玉，辅助 */
  --line:         #e4d9c4;   /* 分隔线 */
  --shadow:       0 10px 30px rgba(80, 55, 30, 0.10);
  --shadow-soft:  0 4px 14px rgba(80, 55, 30, 0.08);

  /* 字体 */
  --font-display: "STKaiti", "KaiTi", "楷体", "Noto Serif SC", "Songti SC", serif;
  --font-body:    "PingFang SC", "Microsoft YaHei", "微软雅黑", -apple-system, sans-serif;

  /* 尺寸 */
  --max-w: 1160px;
  --radius: 14px;
  --radius-sm: 8px;
  --nav-h: 68px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

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

/* 章节标题 */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-align: center;
  color: var(--ink);
}
.section-sub {
  text-align: center;
  color: var(--ink-soft);
  margin-top: 10px;
  font-size: 15px;
  letter-spacing: 0.05em;
}
.section-head { margin-bottom: 46px; }

/* 金色分隔小纹样 */
.ornament {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; margin: 14px auto 0;
  color: var(--gold);
}
.ornament::before, .ornament::after {
  content: ""; width: 52px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.ornament::after { background: linear-gradient(90deg, var(--gold), transparent); }
.ornament .dot { font-size: 12px; letter-spacing: 6px; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 241, 230, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  height: var(--nav-h);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  background: radial-gradient(circle at 35% 30%, var(--cinnabar), var(--cinnabar-dark));
  color: var(--paper); font-family: var(--font-display); font-size: 20px;
  box-shadow: 0 3px 8px rgba(126, 42, 30, 0.35);
}
.brand-name { font-family: var(--font-display); font-size: 20px; letter-spacing: 0.12em; font-weight: 600; }
.brand-name small { display: block; font-size: 11px; letter-spacing: 0.28em; color: var(--ink-faint); font-family: var(--font-body); font-weight: 400; }

.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
  padding: 8px 16px; border-radius: 999px;
  font-size: 15px; letter-spacing: 0.06em; color: var(--ink-soft);
  transition: all .25s ease;
}
.nav-links a:hover { color: var(--cinnabar); background: rgba(165, 58, 43, 0.07); }
.nav-links a.active { color: var(--cinnabar); font-weight: 600; }
.nav-cta {
  background: var(--cinnabar); color: #fff !important;
  padding: 9px 20px !important; font-weight: 600;
  box-shadow: 0 4px 12px rgba(126, 42, 30, 0.3);
}
.nav-cta:hover { background: var(--cinnabar-dark) !important; color: #fff !important; }

/* 移动端菜单按钮 */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 40px; height: 40px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px auto; transition: .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   首页 Hero
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  min-height: 78vh;
  display: flex; align-items: center;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(192, 154, 85, 0.18), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(165, 58, 43, 0.12), transparent 55%),
    var(--paper);
}
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; padding: 64px 0; }
.hero-kicker {
  display: inline-block; font-size: 13px; letter-spacing: 0.32em;
  color: var(--cinnabar); margin-bottom: 20px; font-weight: 500;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 5.4vw, 60px);
  line-height: 1.22; font-weight: 600; letter-spacing: 0.04em;
}
.hero h1 .accent { color: var(--cinnabar); }
.hero-lead { margin-top: 22px; color: var(--ink-soft); font-size: 17px; max-width: 460px; }
.hero-actions { margin-top: 34px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px;
  font-size: 16px; font-weight: 600; letter-spacing: 0.04em;
  transition: all .28s ease; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--cinnabar); color: #fff; box-shadow: 0 8px 20px rgba(126, 42, 30, 0.32); }
.btn-primary:hover { background: var(--cinnabar-dark); transform: translateY(-2px); }
.btn-ghost { border-color: var(--ink-soft); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

/* hero 右侧：佛珠图 */
.hero-art { position: relative; display: grid; place-items: center; }
.bead-ring { position: relative; width: min(420px, 82vw); }
.bead-ring .bead {
  position: absolute; border-radius: 50%;
  box-shadow: inset -3px -4px 8px rgba(0,0,0,.28), inset 3px 3px 6px rgba(255,255,255,.35);
}
.hero-art .glow {
  position: absolute; inset: 10%;
  background: radial-gradient(circle, rgba(192,154,85,.35), transparent 65%);
  filter: blur(24px); z-index: -1;
}

/* 统计/信任条 */
.trust-bar { background: var(--ink); color: var(--paper); }
.trust-inner { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 24px; padding: 30px 0; text-align: center; }
.trust-item .num { font-family: var(--font-display); font-size: 30px; color: var(--gold-light); }
.trust-item .label { font-size: 13px; letter-spacing: 0.12em; color: #cfc3b2; margin-top: 4px; }

/* ============================================================
   通用区块
   ============================================================ */
.section { padding: 88px 0; }
.section-alt { background: var(--paper-deep); }

/* 寓意特色（三列） */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 38px 30px; text-align: center;
  box-shadow: var(--shadow-soft); transition: transform .3s ease, box-shadow .3s ease;
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature-icon {
  width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 50%;
  display: grid; place-items: center; font-size: 28px;
  background: linear-gradient(135deg, var(--cinnabar), var(--cinnabar-dark));
  color: #fff; box-shadow: 0 6px 16px rgba(126,42,30,.3);
}
.feature h3 { font-family: var(--font-display); font-size: 21px; margin-bottom: 10px; letter-spacing: 0.04em; }
.feature p { color: var(--ink-soft); font-size: 14.5px; }

/* 品牌故事 */
.story-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.story-text h2 { font-family: var(--font-display); font-size: clamp(26px,3vw,34px); margin-bottom: 20px; letter-spacing: 0.04em; }
.story-text p { color: var(--ink-soft); margin-bottom: 16px; }
.story-text p.lead { font-size: 17px; color: var(--ink); }
.story-visual {
  aspect-ratio: 4/3; border-radius: var(--radius); overflow: hidden;
  background:
    radial-gradient(circle at 30% 30%, rgba(192,154,85,.25), transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(165,58,43,.2), transparent 50%),
    linear-gradient(135deg, var(--ink), #3a2f26);
  display: grid; place-items: center;
}
.story-visual .big-char { font-family: var(--font-display); font-size: 110px; color: var(--gold-light); text-shadow: 0 6px 30px rgba(0,0,0,.4); }

/* ============================================================
   产品卡片（首页精选 + 产品页共用）
   ============================================================ */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-soft);
  transition: transform .32s ease, box-shadow .32s ease;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.product-media {
  height: 210px; display: grid; place-items: center; position: relative;
  overflow: hidden;
}
.product-media .bead-circle {
  width: 120px; height: 120px; border-radius: 50%; position: relative;
  box-shadow: inset -6px -8px 16px rgba(0,0,0,.3), inset 5px 5px 12px rgba(255,255,255,.4), 0 12px 28px rgba(60,40,20,.25);
}
.product-media .bead-circle::after {
  content: ""; position: absolute; top: 16%; left: 22%;
  width: 26%; height: 16%; border-radius: 50%;
  background: rgba(255,255,255,.55); filter: blur(1px);
}
.product-media .bead-svg {
  width: 82%; max-width: 196px; height: auto;
  filter: drop-shadow(0 14px 22px rgba(60,40,20,.22));
  transition: transform .32s ease;
}
.product-card:hover .bead-svg { transform: translateY(-3px) scale(1.03); }
.product-cat {
  position: absolute; top: 14px; left: 14px;
  font-size: 11px; letter-spacing: .08em; padding: 4px 11px; border-radius: 999px;
  background: rgba(255,255,255,.82); color: var(--ink-soft);
}
.product-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { font-family: var(--font-display); font-size: 20px; letter-spacing: .04em; }
.product-body .meaning {
  margin: 10px 0 14px; color: var(--cinnabar);
  font-size: 14px; letter-spacing: .03em;
  padding: 8px 14px; background: rgba(165,58,43,.06);
  border-radius: var(--radius-sm); border-left: 3px solid var(--cinnabar);
}
.product-body .desc { color: var(--ink-soft); font-size: 14px; flex: 1; }
.product-foot { margin-top: 16px; display: flex; align-items: center; justify-content: space-between; }
.product-foot .enquire { font-size: 13.5px; color: var(--ink-faint); letter-spacing: .05em; }
.product-foot .arrow {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--cinnabar); color: #fff; font-size: 16px;
  transition: transform .3s ease, background .3s ease;
}
.product-card:hover .arrow { transform: translateX(3px); background: var(--cinnabar-dark); }

.view-all { text-align: center; margin-top: 46px; }

/* ============================================================
   产品页：筛选栏 + 详情
   ============================================================ */
.page-hero {
  background:
    radial-gradient(900px 400px at 75% -20%, rgba(192,154,85,.2), transparent 60%),
    linear-gradient(180deg, var(--paper-deep), var(--paper));
  padding: 72px 0 48px; text-align: center; border-bottom: 1px solid var(--line);
}
.page-hero h1 { font-family: var(--font-display); font-size: clamp(30px,4vw,42px); letter-spacing: .06em; }
.page-hero p { color: var(--ink-soft); margin-top: 12px; }

.filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 30px 0 44px; }
.filter-btn {
  padding: 9px 20px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink-soft); font-size: 14px; cursor: pointer;
  letter-spacing: .04em; transition: all .25s;
}
.filter-btn:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.filter-btn.active { background: var(--cinnabar); color: #fff; border-color: var(--cinnabar); }

.no-result { text-align: center; color: var(--ink-faint); padding: 40px; display: none; }

/* ============================================================
   联系 / 询单页
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 44px; }
.contact-info h2 { font-family: var(--font-display); font-size: 28px; margin-bottom: 18px; }
.contact-info p { color: var(--ink-soft); margin-bottom: 26px; }
.contact-row { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 22px; }
.contact-row .ico {
  width: 44px; height: 44px; flex: 0 0 44px; border-radius: 50%;
  display: grid; place-items: center; background: rgba(165,58,43,.1);
  color: var(--cinnabar); font-size: 18px;
}
.contact-row .t { font-size: 13px; color: var(--ink-faint); letter-spacing: .08em; }
.contact-row .v { font-size: 16px; color: var(--ink); margin-top: 2px; }

.form-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 38px 36px; box-shadow: var(--shadow);
}
.form-card h3 { font-family: var(--font-display); font-size: 22px; margin-bottom: 6px; }
.form-card .hint { font-size: 13.5px; color: var(--ink-faint); margin-bottom: 24px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; margin-bottom: 7px; color: var(--ink-soft); letter-spacing: .03em; }
.field label em { color: var(--cinnabar); font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 15px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: #fff; font-size: 15px;
  font-family: var(--font-body); color: var(--ink); transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--cinnabar);
  box-shadow: 0 0 0 3px rgba(165,58,43,.12);
}
.field textarea { resize: vertical; min-height: 120px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-submit { width: 100%; justify-content: center; margin-top: 6px; }

/* 表单提交成功提示 */
.form-success {
  display: none; text-align: center; padding: 40px 10px;
}
.form-success .check {
  width: 74px; height: 74px; margin: 0 auto 20px; border-radius: 50%;
  background: var(--jade); color: #fff; display: grid; place-items: center; font-size: 34px;
}
.form-success h4 { font-family: var(--font-display); font-size: 22px; margin-bottom: 8px; }
.form-success p { color: var(--ink-soft); font-size: 14.5px; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: var(--ink); color: #cbbfa9; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 44px; }
.footer-brand .brand-name { color: var(--paper); }
.footer-brand p { margin-top: 14px; font-size: 14px; color: #a99b86; max-width: 280px; }
.footer-col h4 { color: var(--paper); font-size: 15px; letter-spacing: .1em; margin-bottom: 16px; }
.footer-col a { display: block; color: #a99b86; font-size: 14px; padding: 5px 0; transition: color .2s; }
.footer-col a:hover { color: var(--gold-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0;
  font-size: 13px; color: #8f8169; text-align: center;
}

/* 回到顶部 */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 60;
  width: 46px; height: 46px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--cinnabar); color: #fff; font-size: 20px;
  box-shadow: 0 8px 20px rgba(126,42,30,.35);
  opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s;
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { transform: translateY(-3px); }

/* 滚动显现动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-lead { margin: 22px auto 0; }
  .hero-actions { justify-content: center; }
  .hero-art { order: -1; }
  .features-grid, .products-grid { grid-template-columns: repeat(2, 1fr); }
  .story-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: var(--paper); flex-direction: column; padding: 18px 24px;
    border-bottom: 1px solid var(--line); gap: 4px;
    transform: translateY(-120%); transition: transform .32s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; text-align: center; padding: 12px; }
  .nav-toggle { display: block; }
  .features-grid, .products-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .trust-inner { gap: 18px; }
  .section { padding: 60px 0; }
}