/* roulang page: index */
/* ============================================
   长沙品茶网 | 水帘洞喝茶工作室 - 完整视觉系统
   ============================================ */
:root {
  /* 色彩系统 */
  --primary: #C8924F;
  --primary-light: #E3B061;
  --primary-dark: #A67A3A;
  --secondary: #2F3E34;
  --secondary-light: #3A4A3E;
  --bg-dark: #141110;
  --bg-green: #1D2620;
  --bg-footer: #0D0B09;
  --text-main: #F0E6D6;
  --text-sub: #B8AB9A;
  --text-dim: #87796B;
  --gold: #E3B061;
  --gray-x: #6B6560;
  --line-gold: rgba(200, 146, 79, 0.25);
  --line-gold-hover: rgba(200, 146, 79, 0.7);
  --line-dark: #3A4A3E;
  /* 圆角 */
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  /* 阴影 */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-badge: 0 8px 24px rgba(200, 146, 79, 0.18);
  --shadow-btn: 0 4px 16px rgba(200, 146, 79, 0.25);
  /* 字体 */
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "SimSun", serif;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  /* 间距 */
  --spacing-section: 96px;
  --spacing-section-mobile: 64px;
  --container-pad: 24px;
  --container-pad-mobile: 16px;
  /* 动效 */
  --transition: 0.25s ease;
  --z-header: 100;
  --z-float: 50;
}

/* ===== Reset & 基础 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-dark);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; font-size: 0.95rem; color: var(--text-main); }
h1, h2, h3, h4, h5 { font-family: var(--font-serif); font-weight: 700; line-height: 1.3; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}
.section { padding: var(--spacing-section) 0; }
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-main);
  margin-bottom: 16px;
  position: relative;
  padding-top: 40px;
}
.section-title::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
}
.section-sub {
  color: var(--text-sub);
  font-size: 0.95rem;
  max-width: 720px;
  margin-bottom: 48px;
  line-height: 1.8;
}

/* ===== 按钮体系 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 30px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #1A140E;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(200, 146, 79, 0.4);
  filter: brightness(1.06);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(200, 146, 79, 0.3); }
.btn-outline {
  background: transparent;
  border: 1px solid var(--line-gold-hover);
  color: var(--text-main);
}
.btn-outline:hover {
  background: rgba(200, 146, 79, 0.1);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.btn-outline:active { transform: translateY(0); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: rgba(20, 17, 16, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(200, 146, 79, 0.12);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}
.site-header.scrolled {
  background: rgba(20, 17, 16, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  flex-wrap: nowrap;
}
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}
.logo-main {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.02em;
}
.logo-main span { color: var(--primary); }
.logo-sub {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 2px;
}
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
  justify-content: center;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-block;
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-tab:hover {
  color: var(--text-main);
  background: rgba(200, 146, 79, 0.08);
  border-color: var(--line-gold);
}
.nav-tab.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #1A140E;
  font-weight: 600;
  border-color: transparent;
}
.nav-cta { flex-shrink: 0; padding: 10px 24px; font-size: 0.88rem; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: linear-gradient(rgba(20, 17, 16, 0.65), rgba(20, 17, 16, 0.88)), url('/assets/images/backpic/back-1.jpg');
  background-size: cover;
  background-position: center;
  padding: 140px 0 100px;
  text-align: center;
}
.hero-tape {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
}
.tape-line {
  height: 1px;
  width: 48px;
  background: linear-gradient(90deg, transparent, var(--primary));
}
.tape-line:last-child {
  background: linear-gradient(90deg, var(--primary), transparent);
}
.tape-text {
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--primary-light);
  font-weight: 500;
  text-transform: uppercase;
  white-space: nowrap;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 24px;
  text-shadow: 0 2px 24px rgba(200, 146, 79, 0.2);
}
.hero h1 .gold { color: var(--primary-light); }
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-sub);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.9;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-points {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin-top: 56px;
  flex-wrap: wrap;
}
.hero-point {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.hero-point-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-light);
}
.hero-point-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

/* ===== 指标看板 ===== */
.stats-section {
  background: var(--bg-green);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  background: rgba(20, 17, 16, 0.5);
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
  box-shadow: var(--shadow-badge);
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold-hover);
  box-shadow: var(--shadow-hover);
}
.stat-num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-unit {
  font-size: 1rem;
  color: var(--text-sub);
  margin-left: 2px;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 8px;
  letter-spacing: 0.05em;
}

/* ===== 服务矩阵 ===== */
.services-section {
  background: var(--bg-dark);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  position: relative;
  background: rgba(30, 28, 26, 0.9);
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 60%, transparent 100%);
  z-index: 2;
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold-hover);
  box-shadow: var(--shadow-hover);
}
.service-num {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 800;
  color: rgba(200, 146, 79, 0.35);
  z-index: 2;
  line-height: 1;
}
.service-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}
.service-body {
  padding: 24px;
}
.service-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  font-family: var(--font-serif);
}
.service-desc {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 16px;
}
.service-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid rgba(200, 146, 79, 0.15);
  font-size: 0.82rem;
  color: var(--text-dim);
}
.service-meta .stars {
  color: var(--gold);
  font-size: 0.9rem;
}
.service-link {
  color: var(--primary-light);
  font-weight: 600;
  font-size: 0.85rem;
  transition: color var(--transition);
}
.service-link:hover { color: var(--primary); }

/* ===== 结果对比 ===== */
.compare-section {
  background: var(--bg-green);
  position: relative;
}
.compare-wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
}
.compare-card {
  background: rgba(20, 17, 16, 0.55);
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all var(--transition);
}
.compare-card:hover {
  border-color: var(--line-gold-hover);
  box-shadow: var(--shadow-card);
}
.compare-card-left { border-color: rgba(200, 146, 79, 0.45); }
.compare-card-right { border-color: rgba(107, 101, 96, 0.3); }
.compare-label {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.compare-label .tag {
  font-size: 0.7rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(200, 146, 79, 0.15);
  color: var(--primary-light);
  font-weight: 500;
  font-family: var(--font-sans);
}
.compare-label .tag.dim {
  background: rgba(107, 101, 96, 0.2);
  color: var(--text-dim);
}
.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.6;
}
.compare-list .yes {
  color: var(--gold);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.compare-list .no {
  color: var(--gray-x);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.compare-vs {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 800;
  color: #1A140E;
  box-shadow: 0 0 0 6px rgba(20, 17, 16, 0.8), 0 8px 32px rgba(200, 146, 79, 0.35);
  z-index: 5;
}
.compare-footer {
  margin-top: 40px;
  text-align: center;
}
.compare-footer p {
  color: var(--text-sub);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-dark);
}
.faq-layout {
  display: grid;
  grid-template-columns: 0.35fr 0.65fr;
  gap: 48px;
  align-items: start;
}
.faq-intro p {
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 20px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: rgba(30, 28, 26, 0.85);
  border: 1px solid rgba(200, 146, 79, 0.18);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: var(--line-gold); }
.faq-item.active {
  border-color: var(--line-gold-hover);
  box-shadow: var(--shadow-card);
}
.faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  cursor: pointer;
  user-select: none;
}
.faq-num {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
  width: 24px;
}
.faq-q-text {
  flex: 1;
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text-main);
}
.faq-icon {
  width: 24px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
  transition: transform 0.35s ease;
}
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--primary-light);
  border-radius: 2px;
}
.faq-icon::before { width: 14px; height: 2px; }
.faq-icon::after { width: 2px; height: 14px; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  opacity: 0;
}
.faq-item.active .faq-a {
  max-height: 300px;
  opacity: 1;
}
.faq-a-inner {
  padding: 0 22px 20px 60px;
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ===== 转化表单 ===== */
.contact-section {
  background: linear-gradient(160deg, #1D2620 0%, #141110 100%);
}
.contact-layout {
  display: grid;
  grid-template-columns: 0.4fr 0.6fr;
  gap: 56px;
  align-items: start;
}
.contact-info h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 20px;
}
.contact-info p {
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 24px;
}
.contact-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  color: var(--text-sub);
}
.contact-info-item .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}
.contact-form-wrap {
  background: rgba(20, 17, 16, 0.6);
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-sub);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-green);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.92rem;
  transition: all var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(200, 146, 79, 0.15);
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23C8924F' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}
.form-btn {
  width: 100%;
  padding: 14px;
  margin-top: 8px;
}
.form-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
  margin-top: 14px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-footer);
  border-top: 1px solid rgba(200, 146, 79, 0.12);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo-main {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.footer-brand p {
  color: var(--text-dim);
  font-size: 0.86rem;
  line-height: 1.7;
}
.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul a {
  color: var(--text-sub);
  font-size: 0.88rem;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col ul a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}
.footer-contact p {
  color: var(--text-sub);
  font-size: 0.88rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(200, 146, 79, 0.1);
  padding: 24px 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ===== 浮动CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: var(--z-float);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #1A140E;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 8px 32px rgba(200, 146, 79, 0.4);
  transition: all var(--transition);
  border: none;
}
.float-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 40px rgba(200, 146, 79, 0.5);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .compare-wrap { grid-template-columns: 1fr; gap: 24px; }
  .compare-vs {
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    bottom: -32px;
  }
  .faq-layout { grid-template-columns: 1fr; gap: 36px; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --spacing-section: var(--spacing-section-mobile); --container-pad: var(--container-pad-mobile); }
  .nav-container { flex-wrap: wrap; min-height: auto; padding-top: 12px; padding-bottom: 12px; }
  .logo { width: 100%; align-items: center; margin-bottom: 8px; }
  .nav-cta { display: none; }
  .nav-tabs {
    width: 100%;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    gap: 8px;
  }
  .hero { min-height: auto; padding: 140px 0 80px; }
  .hero h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); }
  .hero-sub { font-size: 0.95rem; }
  .hero-points { gap: 20px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .compare-card { padding: 28px 24px; }
  .contact-form-wrap { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .float-cta { right: 16px; bottom: 16px; padding: 12px 22px; font-size: 0.82rem; }
  .faq-a-inner { padding-left: 46px; }
}
@media (max-width: 520px) {
  .hero-tape .tape-line { width: 24px; }
  .hero-points { flex-direction: column; gap: 12px; align-items: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 24px 14px; }
  .stat-num { font-size: 1.7rem; }
  .service-meta { flex-wrap: wrap; gap: 10px; }
  .compare-vs { width: 48px; height: 48px; font-size: 0.9rem; }
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root {
  --primary: #C8924F;
  --primary-light: #E3B061;
  --primary-glow: rgba(200,146,79,0.18);
  --secondary: #2F3E34;
  --bg-dark: #141110;
  --bg-green: #1D2620;
  --bg-footer: #0D0B09;
  --text-main: #F0E6D6;
  --text-sub: #B8AB9A;
  --text-dim: #87796B;
  --border-gold: rgba(200,146,79,0.25);
  --border-gold-hover: rgba(200,146,79,0.7);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.35);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-gold: 0 8px 24px var(--primary-glow);
  --transition: 0.25s ease;
  --container: 1200px;
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "SimSun", serif;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ============ Reset / Base ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-dark);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

ul, ol {
  list-style: none;
}

/* ============ 容器 ============ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(20,17,16,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(200,146,79,0.15);
  transition: var(--transition);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.04em;
}

.logo-main span {
  color: var(--primary);
}

.logo-sub {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.18em;
  margin-top: 2px;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: rgba(47,62,52,0.5);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-gold);
}

.nav-tab {
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  color: var(--text-sub);
  white-space: nowrap;
  transition: var(--transition);
}

.nav-tab:hover {
  color: var(--text-main);
  background: rgba(200,146,79,0.12);
}

.nav-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #141110;
  font-weight: 600;
}

.nav-cta {
  flex-shrink: 0;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #141110;
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(200,146,79,0.32);
  filter: brightness(1.08);
}

.btn-primary:focus-visible,
.btn-outline:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 3px;
}

.btn-outline {
  background: transparent;
  border-color: var(--border-gold);
  color: var(--text-main);
}

.btn-outline:hover {
  background: rgba(200,146,79,0.1);
  border-color: var(--border-gold-hover);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* ============ Hero 分类页 ============ */
.category-hero {
  position: relative;
  padding: 160px 0 80px;
  background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  min-height: 480px;
  display: flex;
  align-items: center;
}

.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(20,17,16,0.92) 0%, rgba(20,17,16,0.72) 50%, rgba(20,17,16,0.55) 100%);
}

.category-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(180deg, transparent 0%, var(--bg-dark) 100%);
}

.category-hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.hero-eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), transparent);
}

.hero-eyebrow span {
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--primary-light);
  text-transform: uppercase;
}

.category-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--text-main);
  text-shadow: 0 0 40px rgba(200,146,79,0.25);
  margin-bottom: 16px;
}

.category-hero h1 em {
  font-style: normal;
  color: var(--primary-light);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 480px;
}

.hero-desc p + p {
  margin-top: 12px;
}

.hero-stats {
  display: flex;
  gap: 20px;
  margin-top: 32px;
}

.hero-stat-mini {
  padding: 10px 16px;
  background: rgba(47,62,52,0.7);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  text-align: center;
}

.hero-stat-mini strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--primary-light);
  line-height: 1.2;
}

.hero-stat-mini span {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ============ 筛选标签 ============ */
.filter-bar {
  padding: 48px 0 16px;
  background: var(--bg-dark);
}

.filter-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.9rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

.filter-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-tag {
  display: inline-block;
  padding: 8px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-gold);
  color: var(--text-sub);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
}

.filter-tag:hover {
  border-color: var(--border-gold-hover);
  color: var(--text-main);
  background: rgba(200,146,79,0.06);
}

.filter-tag.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-color: transparent;
  color: #141110;
  font-weight: 600;
  box-shadow: var(--shadow-gold);
}

/* ============ 列表卡片区 ============ */
.list-section {
  padding: 32px 0 96px;
  background: var(--bg-dark);
}

.list-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 12px;
}

.list-section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text-main);
  position: relative;
  padding-left: 20px;
}

.list-section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 28px;
  background: linear-gradient(180deg, var(--primary), var(--primary-light));
  border-radius: 2px;
}

.list-count {
  font-size: 0.875rem;
  color: var(--text-dim);
}

.list-count strong {
  color: var(--primary-light);
  font-size: 1rem;
}

.list-cards {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.list-card {
  display: grid;
  grid-template-columns: 260px 1fr;
  background: linear-gradient(135deg, rgba(47,62,52,0.5) 0%, rgba(20,17,16,0.6) 100%);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.list-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-gold-hover);
}

.card-media {
  position: relative;
  min-height: 220px;
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.4s ease;
}

.list-card:hover .card-media img {
  transform: scale(1.04);
}

.card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(20,17,16,0.6) 100%);
}

.card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #141110;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.04em;
}

.card-content {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-content h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.card-content h3 span {
  color: var(--primary-light);
}

.card-desc {
  font-size: 0.925rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 560px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.83rem;
  color: var(--text-dim);
  background: rgba(47,62,52,0.6);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.meta-item::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
}

.meta-rating {
  color: var(--primary-light);
  font-weight: 600;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.mini-tag {
  font-size: 0.75rem;
  color: var(--text-dim);
  border: 1px solid rgba(200,146,79,0.12);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
}

/* ============ 分页器 ============ */
.pagination-wrap {
  padding: 16px 0 96px;
  background: var(--bg-dark);
  text-align: center;
}

.pagination {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-gold);
  color: var(--text-sub);
  font-size: 0.9rem;
  transition: var(--transition);
  background: transparent;
}

.page-btn:hover {
  border-color: var(--border-gold-hover);
  color: var(--text-main);
  background: rgba(200,146,79,0.06);
  transform: translateY(-2px);
}

.page-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #141110;
  border-color: transparent;
  font-weight: 700;
  box-shadow: var(--shadow-gold);
}

.page-arrow {
  font-size: 0.85rem;
}

/* ============ CTA 条 ============ */
.cta-strip {
  padding: 72px 0;
  background: linear-gradient(135deg, var(--bg-green) 0%, var(--bg-dark) 100%);
  border-top: 1px solid var(--border-gold);
  border-bottom: 1px solid var(--border-gold);
}

.cta-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-strip h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  color: var(--text-main);
  font-weight: 700;
  margin-bottom: 6px;
}

.cta-strip p {
  color: var(--text-sub);
  font-size: 0.95rem;
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-footer);
  padding: 72px 0 0;
  border-top: 1px solid rgba(200,146,79,0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer-brand .logo-main {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 0.95rem;
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.06em;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--text-sub);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-contact p {
  color: var(--text-sub);
  font-size: 0.9rem;
  margin-bottom: 8px;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 22px 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .category-hero .container {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .list-card {
    grid-template-columns: 220px 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-container {
    height: auto;
    flex-wrap: wrap;
    padding-top: 12px;
    padding-bottom: 12px;
    gap: 8px;
  }

  .nav-tabs {
    order: 3;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    justify-content: flex-start;
  }

  .nav-tabs::-webkit-scrollbar {
    display: none;
  }

  .nav-tab {
    padding: 6px 14px;
    font-size: 0.8rem;
  }

  .nav-cta {
    margin-left: auto;
    padding: 8px 18px;
    font-size: 0.85rem;
  }

  .category-hero {
    padding: 140px 0 64px;
    min-height: 420px;
  }

  .category-hero h1 {
    font-size: clamp(1.8rem, 5vw, 2.4rem);
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .hero-stats {
    flex-wrap: wrap;
  }

  .list-card {
    grid-template-columns: 1fr;
  }

  .card-media {
    min-height: 200px;
    position: relative;
  }

  .card-media img {
    position: relative;
    height: 220px;
  }

  .card-content {
    padding: 24px;
  }

  .card-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cta-strip-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .nav-container {
    flex-direction: column;
    align-items: stretch;
  }

  .logo {
    margin-bottom: 4px;
  }

  .nav-cta {
    position: absolute;
    top: 14px;
    right: 16px;
    padding: 6px 16px;
    font-size: 0.8rem;
  }

  .nav-tabs {
    margin-top: 4px;
  }

  .filter-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .filter-tags {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .filter-tag {
    flex-shrink: 0;
  }

  .list-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .meta-item {
    font-size: 0.78rem;
  }

  .pagination {
    gap: 4px;
  }

  .page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    font-size: 0.8rem;
  }
}

/* ============ 焦点 / 状态 ============ */
:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 3px;
}

::selection {
  background: var(--primary);
  color: #141110;
}