/* ===== 通用样式 ===== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@700&family=Montserrat:wght@400;600&display=swap');

body {
  font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, 'Microsoft YaHei', sans-serif;
  font-size: 17px;
  margin: 0;
  padding: 0;
  line-height: 1.8;
  color: #f3f1ef;
  background: url('/bj.jpg') center center / cover no-repeat fixed;
  background-color: #0a0a0a;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
}

/* 容器 */
.container {
  width: 90%;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 头部导航 ===== */
header {
  background: rgba(20, 18, 15, 0.75);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  padding: 28px 0;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.9);
  position: sticky;
  top: 0;
  z-index: 9999;
  border-bottom: 2px solid #bfa060;
}

header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 3.6rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #e6d8b8;
  text-shadow: 0 0 12px rgba(191, 160, 96, 0.9);
  margin: 0;
  user-select: text;
}

header h1 a {
  color: inherit;
  text-decoration: none;
  transition: color 0.4s ease;
}

header h1 a:hover {
  color: #fff6d1;
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  gap: 36px;
  font-weight: 600;
  font-family: 'Montserrat', sans-serif;
}

nav ul li a {
  color: #bfa060;
  text-decoration: none;
  font-size: 1.1rem;
  padding: 10px 20px;
  border-radius: 12px;
  transition: background-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
  user-select: none;
  box-shadow: inset 0 0 10px transparent;
}

nav ul li a:hover,
nav ul li a.active {
  background-color: #bfa060;
  color: #1a150b;
  box-shadow:
    0 0 12px #bfa060,
    inset 0 0 12px #f7e9ae;
  font-weight: 700;
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.95rem;
  color: #d6c89e;
  letter-spacing: 0.08em;
  font-weight: 600;
  user-select: none;
  text-shadow: 0 0 5px rgba(191, 160, 96, 0.75);
}

.breadcrumb a {
  color: #f7e9ae;
  text-decoration: none;
  transition: color 0.3s ease;
  font-weight: 700;
}

.breadcrumb a:hover {
  color: #fff6d1;
  text-decoration: underline;
}

/* ===== 按钮样式 ===== */
.btn {
  display: inline-block;
  padding: 16px 36px;
  margin: 10px 16px;
  background: linear-gradient(135deg, #bfa060, #d9c48a);
  color: #1a150b;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  text-shadow: 0 1px 1px rgba(255,255,255,0.6);
  box-shadow:
    0 6px 18px rgba(191, 160, 96, 0.7),
    inset 0 -2px 10px rgba(255, 255, 255, 0.3);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
}

.btn:hover,
.btn:focus {
  background: linear-gradient(135deg, #d9c48a, #f2e6b4);
  box-shadow:
    0 12px 36px rgba(223, 200, 128, 0.85),
    inset 0 2px 12px rgba(255, 255, 255, 0.5);
  transform: translateY(-3px) scale(1.03);
  color: #1a150b;
  outline: none;
}

/* ===== 主模块卡片样式 ===== */
.intro, .features, .gallery, .seo-content, .faq-snippet,
.feature-list, .pricing, .tutorial-steps, .faq-list {
  background: rgba(31, 25, 12, 0.75);
  backdrop-filter: saturate(150%) blur(20px);
  -webkit-backdrop-filter: saturate(150%) blur(20px);
  border-radius: 22px;
  padding: 48px 56px;
  margin: 48px 0;
  box-shadow:
    0 18px 48px rgba(191, 160, 96, 0.55),
    inset 0 0 20px rgba(223, 200, 128, 0.2);
  color: #e6d8b8;
  user-select: text;
  transition: box-shadow 0.3s ease;
  font-family: 'Montserrat', sans-serif;
}

.intro {
  text-align: center;
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  line-height: 1.9;
  font-weight: 600;
  color: #f2e9b9;
  text-shadow: 0 0 4px rgba(223, 200, 128, 0.7);
}

.features ul, .faq-snippet dl {
  padding: 0;
  list-style: none;
  margin: 0;
}

.features li {
  padding: 14px 0;
  font-size: 1.15rem;
  color: #cfc09e;
  font-weight: 600;
  border-bottom: 1px solid rgba(223, 200, 128, 0.25);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.features li:last-child {
  border-bottom: none;
}

.features li:hover {
  background-color: rgba(223, 200, 128, 0.15);
  cursor: default;
  color: #f7e9ae;
  text-shadow: 0 0 8px rgba(223, 200, 128, 0.9);
}

/* ===== 图片画廊 ===== */
.gallery {
  text-align: center;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  margin-top: 36px;
}

.gallery-grid img {
  width: 100%;
  border-radius: 20px;
  box-shadow:
    0 18px 40px rgba(191, 160, 96, 0.6),
    0 8px 16px rgba(0, 0, 0, 0.25);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.45s ease;
  cursor: pointer;
  filter: drop-shadow(0 0 3px rgba(223, 200, 128, 0.8));
}

.gallery-grid img:hover {
  transform: scale(1.1);
  box-shadow:
    0 28px 56px rgba(223, 200, 128, 0.95),
    0 12px 30px rgba(0, 0, 0, 0.35);
  filter: drop-shadow(0 0 8px rgba(255, 244, 168, 1));
}

/* ===== FAQ 样式 ===== */
.faq-snippet dt {
  font-weight: 700;
  margin-top: 20px;
  font-size: 1.25rem;
  color: #f2e9b9;
  letter-spacing: 0.04em;
  text-shadow: 0 0 6px rgba(223, 200, 128, 0.9);
}

.faq-snippet dd {
  margin: 10px 0 20px 0;
  padding-left: 1.4em;
  color: #cfc09e;
  font-size: 1.1rem;
  line-height: 1.9;
  text-shadow: 0 0 3px rgba(191, 160, 96, 0.6);
}

/* ===== 页脚 ===== */
footer {
  background: rgba(20, 18, 15, 0.9);
  color: #bfa960;
  padding: 48px 0;
  text-align: center;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
  user-select: none;
  text-shadow: 0 0 6px rgba(191, 160, 96, 0.7);
}

footer a {
  color: #f7e9ae;
  text-decoration: none;
  font-weight: 700;
  transition: color 0.3s ease;
}

footer a:hover {
  color: #fff6d1;
}

footer .copyright {
  margin-top: 28px;
  border-top: 1px solid rgba(223, 200, 128, 0.35);
  padding-top: 16px;
  color: #bfa960;
  font-weight: 600;
}