/* 亿豪珠宝官网 - 简约大气珠宝风格 */
:root {
  --ivory: #f7f9fc;
  --paper: #ffffff;
  --ink: #1d2430;
  --ink-soft: #5c6675;
  --gold: #1e5cb3;      /* 品牌蓝（主色） */
  --gold-deep: #143f7d; /* 深蓝 */
  --gold-light: #ccdff5;/* 浅蓝 */
  --line: #e2e8f1;
  --shadow: 0 12px 40px rgba(20, 40, 80, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #f7f9fc;
  background: var(--ivory);
  color: #1d2430;
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .serif {
  font-family: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  font-weight: 600;
  letter-spacing: 0.04em;
}

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

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e2e8f1;
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 46px; height: 46px; border-radius: 50%; object-fit: cover;
  border: 1.5px solid #ccdff5; background: #fff;
  border: 1.5px solid var(--gold-light); background: #fff;
}
.brand-text .cn { font-family: "Songti SC", serif; font-size: 20px; font-weight: 700; letter-spacing: 0.12em; }
.brand-text .en { font-size: 10px; color: #5c6675; letter-spacing: 0.28em; }
.brand-text .en { font-size: 10px; color: var(--ink-soft); letter-spacing: 0.28em; }
.nav-links { display: flex; gap: 36px; }
.nav-links a {
  font-size: 15px; color: #5c6675; padding: 6px 0;
  font-size: 15px; color: var(--ink-soft); padding: 6px 0;
  border-bottom: 2px solid transparent; transition: all 0.2s;
}
.nav-links a:hover { color: #143f7d; }
.nav-links a:hover { color: var(--gold-deep); }
.nav-links a.active { color: #1d2430; border-bottom-color: #1e5cb3; font-weight: 600; }
.nav-links a.active { color: var(--ink); border-bottom-color: var(--gold); font-weight: 600; }

/* ===== Hero：门头大图完整展示（不裁切），文案置于图片下方 ===== */
.hero {
  background: #101724;
  overflow: hidden;
}
.hero-banner {
  background: #0b1220;
  padding: 0;
  line-height: 0;
}
.hero-banner img {
  /* 按原图比例（2:1）全宽完整展示，不裁切、不变形，门头招牌完整可见 */
  display: block; width: 100%; height: auto;
  max-height: 760px; object-fit: contain; object-position: center;
  margin: 0 auto;
}
.hero-content {
  position: relative; z-index: 2; color: #fff;
  padding: 64px 0 84px; text-align: center;
}
.hero-content .hero-sub { margin-left: auto; margin-right: auto; }
.hero-kicker {
  display: inline-block; font-size: 13px; letter-spacing: 0.4em;
  color: #cfe1f8; border: 1px solid rgba(160,196,240,0.55);
  padding: 6px 18px; margin-bottom: 28px;
}
.hero-title { font-size: 52px; line-height: 1.25; margin-bottom: 18px; }
.hero-title .en { display: block; font-size: 15px; letter-spacing: 0.5em; color: #cfe1f8; font-family: sans-serif; font-weight: 400; margin-top: 12px; }
.hero-sub { font-size: 17px; color: rgba(255,255,255,0.82); max-width: 560px; margin-bottom: 40px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.hero-tags span {
  font-size: 13px; color: #fff; letter-spacing: 0.06em;
  background: rgba(30, 92, 179, 0.55); border: 1px solid rgba(160,196,240,0.5);
  padding: 6px 16px; border-radius: 20px;
}
.btn {
  display: inline-block; padding: 13px 36px; font-size: 15px;
  letter-spacing: 0.12em; cursor: pointer; transition: all 0.25s;
  border: 1px solid transparent;
}
.btn-gold { background: #1e5cb3; color: #fff; }
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: #143f7d; }
.btn-gold:hover { background: var(--gold-deep); }
.btn-ghost { border-color: rgba(255,255,255,0.6); color: #fff; margin-left: 14px; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.btn-outline { border-color: #1e5cb3; color: #143f7d; background: transparent; }
.btn-outline { border-color: var(--gold); color: var(--gold-deep); background: transparent; }
.btn-outline:hover { background: #1e5cb3; color: #fff; }
.btn-outline:hover { background: var(--gold); color: #fff; }

/* ===== 通用 Section ===== */
.section { padding: 88px 0; }
.section-alt { background: #ffffff; }
.section-alt { background: var(--paper); }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .kicker {
  font-size: 12px; letter-spacing: 0.35em; color: #1e5cb3; margin-bottom: 14px;
  font-size: 12px; letter-spacing: 0.35em; color: var(--gold); margin-bottom: 14px;
}
.section-head h2 { font-size: 34px; margin-bottom: 14px; }
.section-head p { color: #5c6675; max-width: 640px; margin: 0 auto; }
.section-head p { color: var(--ink-soft); max-width: 640px; margin: 0 auto; }

/* ===== 首页数据条 ===== */
.stats-bar {
  background: #143f7d; color: #fff;
  background: var(--gold-deep); color: #fff;
}
.stats-grid {
  display: flex; flex-wrap: wrap; display: grid; grid-template-columns: repeat(4, 1fr);
  text-align: center; padding: 44px 0; gap: 20px;
}
.stat-num { font-family: "Songti SC", serif; font-size: 34px; font-weight: 700; }
.stat-label { font-size: 13px; opacity: 0.85; letter-spacing: 0.1em; margin-top: 4px; }

/* ===== 特性卡片 ===== */
.feature-grid {
  display: flex; flex-wrap: wrap; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.feature-card {
  background: #ffffff; border: 1px solid #e2e8f1;
  background: var(--paper); border: 1px solid var(--line);
  padding: 36px 28px; text-align: center; transition: all 0.25s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(20,40,80,0.08); border-color: #ccdff5; }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--gold-light); }
.feature-icon {
  width: 56px; height: 56px; margin: 0 auto 20px;
  border-radius: 50%; background: linear-gradient(135deg, #dce9f9, #b9d4f2);
  display: flex; align-items: center; justify-content: center; font-size: 24px;
}
.feature-card h3 { font-size: 19px; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: #5c6675; }
.feature-card p { font-size: 14px; color: var(--ink-soft); }

/* ===== 产品卡片 ===== */
.product-grid {
  display: flex; flex-wrap: wrap; display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
}
.product-card {
  background: #ffffff; border: 1px solid #e2e8f1;
  background: var(--paper); border: 1px solid var(--line);
  padding: 44px 40px; position: relative; overflow: hidden; transition: all 0.25s;
}
.product-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #1e5cb3, #ccdff5);
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0); transform-origin: left; transition: transform 0.3s;
}
.product-card:hover { box-shadow: 0 12px 40px rgba(20,40,80,0.08); transform: translateY(-4px); }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.product-card:hover::before { transform: scaleX(1); }
.product-tag {
  display: inline-block; font-size: 12px; letter-spacing: 0.2em;
  color: #143f7d; border: 1px solid #ccdff5;
  color: var(--gold-deep); border: 1px solid var(--gold-light);
  background: #eef4fb; padding: 4px 14px; margin-bottom: 18px;
}
.product-card h3 { font-size: 24px; margin-bottom: 12px; }
.product-card .summary { color: #5c6675; font-size: 15px; margin-bottom: 20px; }
.product-card .summary { color: var(--ink-soft); font-size: 15px; margin-bottom: 20px; }
.spec-list { list-style: none; border-top: 1px dashed #e2e8f1; padding-top: 18px; }
.spec-list { list-style: none; border-top: 1px dashed var(--line); padding-top: 18px; }
.spec-list li {
  font-size: 14px; color: #5c6675; padding: 4px 0 4px 18px; position: relative;
  font-size: 14px; color: var(--ink-soft); padding: 4px 0 4px 18px; position: relative;
}
.spec-list li::before {
  content: "·"; position: absolute; left: 0; color: #1e5cb3; font-weight: 700;
  content: "·"; position: absolute; left: 0; color: var(--gold); font-weight: 700;
}
.loading-tip, .error-tip { text-align: center; color: #5c6675; padding: 48px 0; }
.loading-tip, .error-tip { text-align: center; color: var(--ink-soft); padding: 48px 0; }
.error-tip { color: #b04a3a; }

/* ===== 图文分栏 ===== */
.split { display: flex; flex-wrap: wrap; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-img img { width: 100%; height: 420px; object-fit: cover; box-shadow: 0 12px 40px rgba(20,40,80,0.08); }
.split-img img { width: 100%; height: 420px; object-fit: cover; box-shadow: var(--shadow); }
.split-text h2 { font-size: 30px; margin-bottom: 20px; }
.split-text p { color: #5c6675; margin-bottom: 16px; }
.split-text p { color: var(--ink-soft); margin-bottom: 16px; }
.quote-block {
  border-left: 3px solid #1e5cb3; background: #eef4fb;
  border-left: 3px solid var(--gold); background: #eef4fb;
  padding: 20px 24px; margin: 24px 0; font-size: 15px; color: #143f7d;
  padding: 20px 24px; margin: 24px 0; font-size: 15px; color: var(--gold-deep);
}

/* ===== 优势列表 ===== */
.adv-list { list-style: none; display: grid; gap: 22px; }
.adv-list li { display: flex; gap: 16px; }
.adv-num {
  flex: none; width: 36px; height: 36px; border-radius: 50%;
  background: #1e5cb3; color: #fff; font-family: "Songti SC", serif;
  background: var(--gold); color: #fff; font-family: "Songti SC", serif;
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.adv-list h4 { font-size: 17px; margin-bottom: 4px; }
.adv-list p { font-size: 14px; color: #5c6675; }
.adv-list p { font-size: 14px; color: var(--ink-soft); }

/* ===== 联系我们 ===== */
.contact-grid { display: flex; flex-wrap: wrap; display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.contact-card {
  background: #ffffff; border: 1px solid #e2e8f1; padding: 40px 36px;
  background: var(--paper); border: 1px solid var(--line); padding: 40px 36px;
}
.contact-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed #e2e8f1; }
.contact-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--line); }
.contact-item:last-child { border-bottom: none; }
.contact-icon { font-size: 22px; flex: none; width: 40px; height: 40px; background: #eef4fb; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.contact-item h4 { font-size: 14px; color: #5c6675; font-weight: 400; letter-spacing: 0.08em; }
.contact-item h4 { font-size: 14px; color: var(--ink-soft); font-weight: 400; letter-spacing: 0.08em; }
.contact-item p { font-size: 16px; font-weight: 600; margin-top: 2px; }
.contact-item p small { font-weight: 400; color: #5c6675; }
.contact-item p small { font-weight: 400; color: var(--ink-soft); }

.form-card { background: #ffffff; border: 1px solid #e2e8f1; padding: 40px 36px; }
.form-card { background: var(--paper); border: 1px solid var(--line); padding: 40px 36px; }
.form-row { display: flex; flex-wrap: wrap; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; color: #5c6675; margin-bottom: 8px; }
.form-group label { display: block; font-size: 14px; color: var(--ink-soft); margin-bottom: 8px; }
.form-group label em { color: #b04a3a; font-style: normal; }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 14px; font-size: 15px; font-family: inherit;
  border: 1px solid #e2e8f1; background: #f7f9fc; color: #1d2430;
  border: 1px solid var(--line); background: var(--ivory); color: var(--ink);
  transition: border-color 0.2s; border-radius: 2px;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: #1e5cb3; background: #fff;
  outline: none; border-color: var(--gold); background: #fff;
}
.form-group textarea { min-height: 120px; resize: vertical; }
/* ===== 快速咨询行动按钮（纯静态，无后端） ===== */
.action-list { display: grid; gap: 14px; }
.action-btn {
  display: flex; align-items: center; gap: 14px; width: 100%;
  background: #ffffff; border: 1px solid #e2e8f1;
  background: var(--paper); border: 1px solid var(--line);
  padding: 16px 20px; cursor: pointer; text-align: left;
  font-family: inherit; color: #1d2430; transition: all 0.22s;
  font-family: inherit; color: var(--ink); transition: all 0.22s;
  border-radius: 4px;
}
.action-btn:hover { border-color: #1e5cb3; box-shadow: 0 12px 40px rgba(20,40,80,0.08); transform: translateY(-2px); }
.action-btn:hover { border-color: var(--gold); box-shadow: var(--shadow); transform: translateY(-2px); }
.action-btn.primary { background: #1e5cb3; border-color: #1e5cb3; color: #fff; }
.action-btn.primary { background: var(--gold); border-color: var(--gold); color: #fff; }
.action-btn.primary:hover { background: #143f7d; border-color: #143f7d; }
.action-btn.primary:hover { background: var(--gold-deep); border-color: var(--gold-deep); }
.action-ico {
  flex: none; width: 44px; height: 44px; border-radius: 50%;
  background: #eef4fb; display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.action-btn.primary .action-ico { background: rgba(255,255,255,0.2); }
.action-txt { flex: 1; display: block; }
.action-txt strong { display: block; font-size: 16px; font-weight: 500; margin-bottom: 2px; }
.action-txt small { font-size: 13px; color: #5c6675; }
.action-txt small { font-size: 13px; color: var(--ink-soft); }
.action-btn.primary .action-txt small { color: rgba(255,255,255,0.85); }
.action-tag {
  flex: none; font-size: 12px; padding: 4px 12px; border-radius: 14px;
  border: 1px solid #ccdff5; color: #143f7d; background: #eef4fb;
  border: 1px solid var(--gold-light); color: var(--gold-deep); background: #eef4fb;
}
.action-btn.primary .action-tag { border-color: rgba(255,255,255,0.6); color: #fff; background: rgba(255,255,255,0.18); }
.action-note { font-size: 13px; color: #5c6675; margin-top: 18px; line-height: 1.7; }
.action-note { font-size: 13px; color: var(--ink-soft); margin-top: 18px; line-height: 1.7; }

.form-msg { margin-top: 16px; font-size: 14px; display: none; padding: 12px 16px; }
.form-msg.ok { display: block; background: #f0f7ee; color: #3d7a34; border: 1px solid #cfe6c9; }
.form-msg.err { display: block; background: #fbf0ee; color: #b04a3a; border: 1px solid #ecd2cc; }

/* ===== 一键复制 ===== */
.copy-row { cursor: pointer; transition: background 0.2s; border-radius: 4px; margin: 0 -8px; padding: 4px 8px; }
.copy-row:hover { background: #eef4fb; }
.copy-row .copy-hint {
  display: inline-block; font-size: 12px; color: #1e5cb3;
  display: inline-block; font-size: 12px; color: var(--gold);
  border: 1px solid #ccdff5; border-radius: 3px;
  border: 1px solid var(--gold-light); border-radius: 3px;
  padding: 1px 8px; margin-left: 8px; vertical-align: 1px; user-select: none;
}
.copy-row.copied .copy-hint { background: #1e5cb3; color: #fff; border-color: #1e5cb3; }
.copy-row.copied .copy-hint { background: var(--gold); color: #fff; border-color: var(--gold); }
.form-msg.copy-ok { display: block; background: #eef6ee; color: #2f6f2a; border: 1px solid #cde5cb; padding: 8px 14px; }

/* ===== 微信二维码 ===== */
.qr-card {
  background: #ffffff; border: 1px solid #e2e8f1;
  background: var(--paper); border: 1px solid var(--line);
  padding: 28px; text-align: center; margin-top: 24px;
}
.qr-card img { width: 200px; height: 200px; object-fit: cover; margin: 0 auto 16px; }
.qr-card h4 { font-size: 17px; margin-bottom: 6px; }
.qr-card p { font-size: 13px; color: #5c6675; }
.qr-card p { font-size: 13px; color: var(--ink-soft); }

/* ===== 抖音入口 ===== */
.douyin-link {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid #e2e8f1; background: #16181d; color: #fff;
  border: 1px solid var(--line); background: #16181d; color: #fff;
  padding: 10px 22px; border-radius: 24px; font-size: 14px;
  transition: all 0.2s; letter-spacing: 0.06em;
}
.douyin-link:hover { background: #1e5cb3; border-color: #1e5cb3; }
.douyin-link:hover { background: var(--gold); border-color: var(--gold); }
.douyin-badge {
  width: 20px; height: 20px; border-radius: 50%;
  background: conic-gradient(#25f4ee 0 33%, #fff 33% 34%, #fe2c55 34% 66%, #fff 66% 67%, #25f4ee 67% 100%);
  display: inline-flex; align-items: center; justify-content: center;
  color: #16181d; font-size: 12px; font-weight: 700;
}

/* ===== 页脚 ===== */
.site-footer { background: #101724; color: rgba(255,255,255,0.72); margin-top: 0; }
.footer-grid {
  display: flex; flex-wrap: wrap; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 64px 0 44px;
}
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; letter-spacing: 0.1em; }
.site-footer p, .site-footer a { font-size: 14px; line-height: 2; }
.site-footer a:hover { color: #cfe1f8; }
.footer-brand .cn { font-family: "Songti SC", serif; font-size: 24px; color: #fff; letter-spacing: 0.14em; }
.footer-brand .en { font-size: 11px; letter-spacing: 0.3em; color: #cfe1f8; margin: 6px 0 16px; }
.footer-logo { width: 52px; height: 52px; border-radius: 50%; object-fit: cover; margin-bottom: 14px; border: 1px solid rgba(255,255,255,0.25); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* ===== CTA 条 ===== */
.cta-band { background: linear-gradient(120deg, #101724, #1a3a6b); color: #fff; text-align: center; padding: 72px 24px; }
.cta-band h2 { font-size: 30px; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.75); margin-bottom: 32px; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .split, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 36px; }
  .hero-banner img { height: 320px; max-height: 320px; }
  .hero-content { padding: 52px 0 68px; }
  .nav-links { gap: 18px; }
  .brand-text .en { display: none; }
  .split-img img { height: 300px; }
}
@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .nav { flex-direction: column; height: auto; padding: 12px 0; gap: 8px; }
  .hero-banner { padding: 16px 0; }
  .hero-banner img { height: 200px; max-height: 200px; }
  .hero-content { padding: 40px 0 56px; }
}


/* ===== 老机型兼容：flex 兜底尺寸 ===== */
.stats-grid > div { flex: 1 1 140px; }
.feature-card { flex: 1 1 240px; }
.product-card { flex: 1 1 320px; }
.footer-grid > div { flex: 1 1 260px; }
.contact-grid > div { flex: 1 1 320px; }
.split > div { flex: 1 1 320px; }
.form-row > div { flex: 1 1 200px; }
.action-list { display: flex; flex-direction: column; display: grid; }
.hero-banner img { max-width: 100%; }
img { height: auto; }
/* ===== 页脚备案信息（公安 + ICP） ===== */
.footer-beian {
  padding: 0 0 20px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-beian a {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.45);
  text-decoration: none;
}
.footer-beian a:hover { color: #cfe1f8; }
.footer-beian .sep { margin: 0 8px; opacity: 0.5; }
.footer-beian img { display: inline-block; height: 18px; width: auto; vertical-align: -4px; margin-right: 4px; }